Prime Meridian

Prime Meridian (Prime Meridian Labs) is an AI-powered consumer tax preparation and e-filing service that files federal and state income tax returns for free. Users upload their tax documents, answer a few clarifying questions, and the platform's AI generates a plain-language return covering W-2 employment, self-employment (Schedule C), K-1 partnership income, and multi-state situations, then e-files it with the IRS and state authorities in roughly fifteen minutes. The company is backed by General Catalyst and counts former IRS Commissioner Daniel Werfel among its strategic advisors. It is a consumer web application with no public developer API surface at this time.

Prime Meridian is profiled on the APIs.io network. Tagged areas include Company, Tax, Tax Filing, Fintech, and Consumer Finance.

Prime Meridian’s developer surface includes signup flow, support, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

14.5/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyTaxTax FilingFintechConsumer FinanceArtificial IntelligenceAccounting

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 14.5/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.9 / 20

Commercial Clarity 6.8 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/prime-meridian: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: prime-meridian
name: Prime Meridian
description: Prime Meridian (Prime Meridian Labs) is an AI-powered consumer tax preparation and e-filing service that files
  federal and state income tax returns for free. Users upload their tax documents, answer a few clarifying questions, and
  the platform's AI generates a plain-language return covering W-2 employment, self-employment (Schedule C), K-1 partnership
  income, and multi-state situations, then e-files it with the IRS and state authorities in roughly fifteen minutes. The company
  is backed by General Catalyst and counts former IRS Commissioner Daniel Werfel among its strategic advisors. It is a consumer
  web application with no public developer API surface at this time.
url: https://raw.githubusercontent.com/api-evangelist/prime-meridian/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://getprimemeridian.com/favicon.ico
x-type: company
x-source: vc-portfolio
x-backed-by:
- general-catalyst
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Tax
- Tax Filing
- Fintech
- Consumer Finance
- Artificial Intelligence
- Accounting
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/prime-meridian-domain-security.yml
- type: Website
  url: https://getprimemeridian.com
- type: SignUp
  url: https://app.getprimemeridian.com/login
- type: Login
  url: https://app.getprimemeridian.com/login
- type: Support
  url: mailto:help@getprimemeridian.com
- type: PrivacyPolicy
  url: https://getprimemeridian.com/privacy
- type: TermsOfService
  url: https://getprimemeridian.com/terms
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 1
  pass: local-v1