Centaur Labs

Centaur Public API

Public REST API for importing data and managing labeling projects, tasks, cases, assets, gold standards, prelabels, tags and for downloading aggregated labeling results. Split across several versioned apps (auth, imports, tasks, labelClasses, cases, reads, results, tags, projects, manifests, masks) served under a single host.

GitHub

Documentation

📖
Documentation
https://docs.centaurlabs.com/
📖
APIReference
https://docs.centaurlabs.com/reference
📖
GettingStarted
https://docs.centaurlabs.com/docs/getting-started-1
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/authentication/centaur-labs-authentication.yml

Other Resources

🔗
LLMsTxt
https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/llms/centaur-labs-llms.txt
🔗
Conventions
https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/conventions/centaur-labs-conventions.yml
🔗
Lifecycle
https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/lifecycle/centaur-labs-lifecycle.yml
🔗
Deprecation
https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/lifecycle/centaur-labs-lifecycle.yml
🔗
Conformance
https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/conformance/centaur-labs-conformance.yml
🔗
DataModel
https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/data-model/centaur-labs-data-model.yml
🔗
X-MCPServerCandidate
https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/mcp/centaur-labs-mcp.yml
🔗
AgentSkill
https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/skills/_index.yml
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/apis.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • 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.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/centaur-public-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
name: Centaur Public API
description: Public REST API for importing data and managing labeling projects, tasks, cases, assets,
  gold standards, prelabels, tags and for downloading aggregated labeling results. Split across several
  versioned apps (auth, imports, tasks, labelClasses, cases, reads, results, tags, projects, manifests,
  masks) served under a single host.
humanURL: https://docs.centaurlabs.com/reference
baseURL: https://api.centaurlabs.com
properties:
- type: Documentation
  url: https://docs.centaurlabs.com/
- type: APIReference
  url: https://docs.centaurlabs.com/reference
- type: GettingStarted
  url: https://docs.centaurlabs.com/docs/getting-started-1
- type: LLMsTxt
  url: llms/centaur-labs-llms.txt
- type: Authentication
  url: authentication/centaur-labs-authentication.yml
- type: Conventions
  url: conventions/centaur-labs-conventions.yml
- type: Lifecycle
  url: lifecycle/centaur-labs-lifecycle.yml
- type: Deprecation
  url: lifecycle/centaur-labs-lifecycle.yml
- type: Conformance
  url: conformance/centaur-labs-conformance.yml
- type: DataModel
  url: data-model/centaur-labs-data-model.yml
- type: X-MCPServerCandidate
  url: mcp/centaur-labs-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate
    — a tool list derived from the published API contracts, not an existing server. The scorer already
    read the manifest and reported mcp_server correctly; the MCPServer type was crediting the artifact-type
    surfaces with a server that does not exist.'
- type: AgentSkill
  url: skills/_index.yml