Company lists · Data refreshed September 2026
Top 20 Fintech api startups based in San Francisco, United States
RevenueBase identified 42 company matches for fintech api startups associated with San Francisco, United States as of September 2026 and tracks 3,512 professional contacts across them, including 2,084 with verified work emails. Across the United States, New York is the largest hub for this category (68 companies); San Francisco follows with 42.
This list covers company matches for fintech api startups associated with San Francisco, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 20 largest fintech api startups based in San Francisco, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,410 contacts → | ||||
Exact match “Plaid is a data network that powers the tools millions of people rely on to live a healthier financial life.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 1,149 contacts → | ||||
Exact match “Mercury is the fintech ambitious companies use for banking* and all their financial workflows.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 169 contacts → | ||||
Exact match “Finix is a payment processor that makes it easy for software platforms, marketplaces, and individual businesses of all sizes to accept payments and send money while maximizing…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 134 contacts → | ||||
Exact match “Parafin’s infrastructure powers financial services for marketplaces, vertical SaaS, payment platforms, and more.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 124 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 65 contacts → | ||||
Exact match “Backed by Y Combinator, NEA, Stanford University, Menlo Ventures, and the founders of Tinder and Plaid, Slash is the banking platform of choice for over of America's most…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 43 contacts → | ||||
Exact match “Klasha is a global technology company, building a platform and APIs to move money to and from emerging markets frictionlessly.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 40 contacts → | ||||
Exact match “We’re Plastiq, Powered by Priority.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 40 contacts → | ||||
Exact match “The new-age back-office of fintech & retail, to increase the speed of innovation and improve the health of the financial services ecosystem.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 29 contacts → | ||||
Exact match “Stronghold is a fintech infrastructure company enabling fast, secure pay-by-bank and embedded payments through developer-first APIs.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 18 contacts → | ||||
Exact match “Founded in 2020, Mesh aims to build an open, connected, and secure financial ecosystem.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 18 contacts → | ||||
Exact match “In order to port over the next billion people into a secure and open financial system, you’re going to need a network of applications that connect to the fiat world… Wyre’s APIs…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 18 contacts → | ||||
Exact match “Woodcore is a modern infrastructure that enables organizations to build financial products and services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 13 contacts → | ||||
Exact match “Dapi is a an open-source real-time banking API powered by AI agents.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 6 contacts → | ||||
Exact match “Access to financial services is a basic human right.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 5 contacts → | ||||
Exact match “Levro is an all-in-one financial platform for global businesses.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 4 contacts → | ||||
Exact match “Cheqly is revolutionizing the way startups and small to medium-sized enterprises (SMEs) manage their finances.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 4 contacts → | ||||
Exact match “Carneros Bay is your partner in the creation, development and launch of new financial services technologies and companies.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 3 contacts → | ||||
Exact match “Invoiss is a processor-agnostic payment and financial operations platform built for modern businesses.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 3 contacts → | ||||
Exact match “Our first APIs equip developers to connect money movement systems in new ways and put everyone at the forefront of accessing financial innovation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “fintech api startups”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 20 of 42 fintech api startups based in San Francisco, United States
See the full list, filter by size, metro and specialty, and access 2,084 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Fintech api startups based in San Francisco, United States at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 42 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with San Francisco, United States whose business descriptions match “fintech api startups” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 2,084 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Fintech api startups by metro in the United States
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “fintech api startups”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many fintech api startups are there based in San Francisco, United States?
RevenueBase identified 42 company matches for fintech api startups associated with San Francisco, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
PLAID tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United States has the most fintech api startups?
New York leads the United States with 68 company records, followed by San Francisco (42) and Miami (25).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,084 professional contacts with verified work emails tracked across these 42 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 42 fintech api startups based in San Francisco, United States. Start with a free account, no credit card.
Download this list →Related lists
Fintech api startups by geography
- Fintech api startups based in Sydney, Australia
- Fintech api startups based in Sao Paulo, Brazil
- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India
- Fintech api startups based in Singapore, Singapore
- Fintech api startups based in Dubai, United Arab Emirates
- Fintech api startups based in London, United Kingdom
- Fintech api startups based in Miami, United States
- Fintech api startups based in New York, United States
- Fintech api startups based in Argentina
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Fintech api startups based in Sydney, Australia
- Fintech api startups based in Sao Paulo, Brazil
- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India
Company intelligence · public preview
Top 20 fintech api startups based in San Francisco, United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 42 matching company records for fintech api startups based in San Francisco, United States, with 3,512 tracked contacts and 2,084 verified work emails.
This public preview shows 20 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 20 fintech api startups based in San Francisco, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  PLAIDplaid.comHQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 1,410 contacts → |
“Plaid is a data network that powers the tools millions of people rely on to live a healthier financial life.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Mercurymercury.comHQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 1,149 contacts → |
“Mercury is the fintech ambitious companies use for banking* and all their financial workflows.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  FINIXfinix.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 169 contacts → |
“Finix is a payment processor that makes it easy for software platforms, marketplaces, and individual businesses of all sizes to accept payments and send money while maximizing…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Parafinparafin.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 134 contacts → |
“Parafin’s infrastructure powers financial services for marketplaces, vertical SaaS, payment platforms, and more.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Cloudcard INCcloudcardinc.comHQ: San Francisco, United StatesReported employees: 51-200 | San Francisco, United States | 51-200 | Exact match | 124 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 6 |  SLASHslash.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 65 contacts → |
“Backed by Y Combinator, NEA, Stanford University, Menlo Ventures, and the founders of Tinder and Plaid, Slash is the banking platform of choice for over of America's most…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Klashaklasha.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 43 contacts → |
“Klasha is a global technology company, building a platform and APIs to move money to and from emerging markets frictionlessly.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Plastiqplastiq.comHQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 40 contacts → |
“We’re Plastiq, Powered by Priority.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Optimus Fintechoptimus.techHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 40 contacts → |
“The new-age back-office of fintech & retail, to increase the speed of innovation and improve the health of the financial services ecosystem.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Strongholdstronghold.coHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 29 contacts → |
“Stronghold is a fintech infrastructure company enabling fast, secure pay-by-bank and embedded payments through developer-first APIs.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | MESHmeshconnect.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 18 contacts → |
“Founded in 2020, Mesh aims to build an open, connected, and secure financial ecosystem.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  WYREsendwyre.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 18 contacts → |
“In order to port over the next billion people into a secure and open financial system, you’re going to need a network of applications that connect to the fiat world… Wyre’s APIs…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Woodcore INC Cloud Banking OSwoodcore.coHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 18 contacts → |
“Woodcore is a modern infrastructure that enables organizations to build financial products and services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  DAPIdapi.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 13 contacts → |
“Dapi is a an open-source real-time banking API powered by AI agents.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  VESTOvesto.ioHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 6 contacts → |
“Access to financial services is a basic human right.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  LEVROlevro.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 5 contacts → |
“Levro is an all-in-one financial platform for global businesses.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Cheqlycheqly.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“Cheqly is revolutionizing the way startups and small to medium-sized enterprises (SMEs) manage their finances.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Carneros BAYcarnerosbay.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“Carneros Bay is your partner in the creation, development and launch of new financial services technologies and companies.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Invoissinvoiss.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“Invoiss is a processor-agnostic payment and financial operations platform built for modern businesses.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Stitchwithstitch.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“Our first APIs equip developers to connect money movement systems in new ways and put everyone at the forefront of accessing financial innovation.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 20 of 42 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Fintech api startups: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
42 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 42 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Fintech api startups by metro in the United States
Questions about this company list
What does Exact match mean for fintech api startups?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many fintech api startups did RevenueBase find based in San Francisco, United States?
The saved snapshot records 42 matching company records, 3,512 tracked contacts and 2,084 verified emails. The public preview displays 20 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Fintech api startups by geography
- Fintech api startups based in Sydney, Australia
- Fintech api startups based in Sao Paulo, Brazil
- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India
- Fintech api startups based in Singapore, Singapore
- Fintech api startups based in Dubai, United Arab Emirates
- Fintech api startups based in London, United Kingdom
- Fintech api startups based in Miami, United States
- Fintech api startups based in New York, United States
- Fintech api startups based in Argentina
Cite this list
RevenueBase Data Team. Top 20 fintech api startups based in San Francisco, United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/fintech-api-startups/united-states/san-francisco.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Fintech api startups based in Sydney, Australia
- Fintech api startups based in Sao Paulo, Brazil
- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India
Company intelligence · public preview
Top 20 fintech api startups based in San Francisco, United States
RevenueBase records 42 matching company records for fintech api startups based in San Francisco, United States, with 3,512 tracked contacts and 2,084 verified work emails.
This public preview shows 20 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 20 fintech api startups based in San Francisco, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | PLAIDplaid.com HQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 1,410 contacts → |
“Plaid is a data network that powers the tools millions of people rely on to live a healthier financial life.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Mercurymercury.com HQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 1,149 contacts → |
“Mercury is the fintech ambitious companies use for banking* and all their financial workflows.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | FINIXfinix.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 169 contacts → |
“Finix is a payment processor that makes it easy for software platforms, marketplaces, and individual businesses of all sizes to accept payments and send money while maximizing…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Parafinparafin.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 134 contacts → |
“Parafin’s infrastructure powers financial services for marketplaces, vertical SaaS, payment platforms, and more.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Cloudcard INCcloudcardinc.com HQ: San Francisco, United StatesReported employees: 51-200 | San Francisco, United States | 51-200 | Exact match | 124 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 6 | SLASHslash.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 65 contacts → |
“Backed by Y Combinator, NEA, Stanford University, Menlo Ventures, and the founders of Tinder and Plaid, Slash is the banking platform of choice for over of America's most…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Klashaklasha.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 43 contacts → |
“Klasha is a global technology company, building a platform and APIs to move money to and from emerging markets frictionlessly.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Plastiqplastiq.com HQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 40 contacts → |
“We’re Plastiq, Powered by Priority.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Optimus Fintechoptimus.tech HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 40 contacts → |
“The new-age back-office of fintech & retail, to increase the speed of innovation and improve the health of the financial services ecosystem.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Strongholdstronghold.co HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 29 contacts → |
“Stronghold is a fintech infrastructure company enabling fast, secure pay-by-bank and embedded payments through developer-first APIs.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | MESHmeshconnect.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 18 contacts → |
“Founded in 2020, Mesh aims to build an open, connected, and secure financial ecosystem.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | WYREsendwyre.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 18 contacts → |
“In order to port over the next billion people into a secure and open financial system, you’re going to need a network of applications that connect to the fiat world… Wyre’s APIs…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Woodcore INC Cloud Banking OSwoodcore.co HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 18 contacts → |
“Woodcore is a modern infrastructure that enables organizations to build financial products and services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | DAPIdapi.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 13 contacts → |
“Dapi is a an open-source real-time banking API powered by AI agents.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | VESTOvesto.io HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 6 contacts → |
“Access to financial services is a basic human right.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | LEVROlevro.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 5 contacts → |
“Levro is an all-in-one financial platform for global businesses.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Cheqlycheqly.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“Cheqly is revolutionizing the way startups and small to medium-sized enterprises (SMEs) manage their finances.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Carneros BAYcarnerosbay.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“Carneros Bay is your partner in the creation, development and launch of new financial services technologies and companies.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Invoissinvoiss.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“Invoiss is a processor-agnostic payment and financial operations platform built for modern businesses.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Stitchwithstitch.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“Our first APIs equip developers to connect money movement systems in new ways and put everyone at the forefront of accessing financial innovation.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 20 of 42 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Fintech api startups: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
42 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 42 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Fintech api startups by metro in the United States
Questions about this company list
What does Exact match mean for fintech api startups?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many fintech api startups did RevenueBase find based in San Francisco, United States?
The saved snapshot records 42 matching company records, 3,512 tracked contacts and 2,084 verified emails. The public preview displays 20 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Fintech api startups by geography
- Fintech api startups based in Sydney, Australia
- Fintech api startups based in Sao Paulo, Brazil
- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India
- Fintech api startups based in Singapore, Singapore
- Fintech api startups based in Dubai, United Arab Emirates
- Fintech api startups based in London, United Kingdom
- Fintech api startups based in Miami, United States
- Fintech api startups based in New York, United States
- Fintech api startups based in Argentina
Cite this list
RevenueBase Data Team. Top 20 fintech api startups based in San Francisco, United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/fintech-api-startups/united-states/san-francisco.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Fintech api startups based in Sydney, Australia
- Fintech api startups based in Sao Paulo, Brazil
- Fintech api startups based in Toronto, Canada
- Fintech api startups based in Bangalore, India
- Fintech api startups based in Mumbai, India
- Fintech api startups based in Noida, India