FastAPI Labs

FastAPI Labs, operating as FastAPI Cloud, provides a developer‑focused platform that lets you deploy FastAPI applications with a single command. Backed by Sequoia Capital, the service offers zero‑config global infrastructure, automatic scaling, and built‑in metrics, targeting both human developers and AI agents. It integrates with popular tools, supports custom domains, and emphasizes security with HTTPS by default.

FastAPI Labs is profiled on the APIs.io network. Tagged areas include Company, API Platform, Cloud, Python, and Open Source.

FastAPI Labs’ developer surface includes authentication, documentation, engineering blog, support, pricing, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

23.8/100 emerging Agent 6/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

0 APIs

Company API Platform Cloud Python Open Source

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 23.8/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.9 / 17

Access Clarity 8.9 / 17

Operational Transparency 1.7 / 11

Contract Governance 0.0 / 10

Discoverability 4.1 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 6/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 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

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

11 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 28.6 — up to +14.3 composite points
Contract Governance scores 0.0 — up to +12.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/fastapi-labs/apis.yml: open an issue on github.com/api-evangelist/fastapi-labs to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Pricing Plans 1

Published pricing tiers and plan structures.

Fastapi Labs Plans Pricing

2 plans

PLANS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Fastapi Labs Authentication

2 schemes

SECURITY

Fastapi Labs Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

SecurityTxt

SecurityTxt

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: fastapi-labs
name: FastAPI Labs
image: https://fastapicloud.com/social-preview.png
description: FastAPI Labs, operating as FastAPI Cloud, provides a developer‑focused platform that lets you deploy FastAPI
  applications with a single command. Backed by Sequoia Capital, the service offers zero‑config global infrastructure, automatic
  scaling, and built‑in metrics, targeting both human developers and AI agents. It integrates with popular tools, supports
  custom domains, and emphasizes security with HTTPS by default.
url: https://raw.githubusercontent.com/api-evangelist/fastapi-labs/refs/heads/main/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-23 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-23'
modified: '2026-10-23'
tags:
- Company
- API Platform
- Cloud
- Python
- Open Source
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/fastapi-labs-plans-pricing.yml
- type: Authentication
  url: authentication/fastapi-labs-authentication.yml
- type: SecurityTxt
  url: well-known/fastapi-labs-security.txt
- type: WellKnown
  url: well-known/fastapi-labs-well-known.yml
- type: Hosts
  url: hosts/fastapi-labs-hosts.yml
- type: Vendors
  url: vendors/fastapi-labs-vendors.yml
- type: TermsOfService
  url: https://fastapicloud.com/legal/terms
- type: PrivacyPolicy
  url: https://fastapicloud.com/legal/privacy-policy
- type: DomainSecurity
  url: security/fastapi-labs-domain-security.yml
- type: Website
  url: https://fastapicloud.com/
- type: Documentation
  url: https://fastapicloud.com/docs/
- type: Blog
  url: https://fastapicloud.com/blog
- type: GitHubOrganization
  url: https://github.com/fastapicloud
- type: Support
  url: https://fastapicloud.com/docs/getting-started
- type: Pricing
  url: https://fastapicloud.com/pricing
apis: []
x-backed-by:
- sequoia-capital
x-enrichment:
  date: '2026-10-23'
  status: enriched
  artifacts_added: 10
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

FastAPI Labs — frequently asked questions

How do I authenticate with the FastAPI Labs?

FastAPI Labs uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Fastapi Labs Authentication.

How much does the FastAPI Labs cost?

APIs.io lists 2 pricing plans for FastAPI Labs, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the FastAPI Labs ready for AI agents?

FastAPI Labs has a Kin Score of 23.8 out of 100 (emerging) and an Agent Readiness score of 5.6 (agent-aware), scored by API Evangelist on 2026-10-31.

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find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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