Centaur Labs website screenshot

Centaur Labs

Centaur Labs (centaur.ai) provides expert data annotation and labeling for healthcare and scientific AI. Its platform combines large crowds of vetted human experts with AI models in a competitive "collective intelligence" model to produce high-quality, aggregated training labels across images, text, audio, video, waveform and DICOM medical imaging. Centaur exposes a public REST API (api.centaurlabs.com) for importing data, creating and managing labeling projects, tasks, cases, gold standards, tags and prelabels, and for downloading aggregated results. The company is SOC 2 Type II audited and HIPAA compliant, was founded by Erik Duhaime out of the MIT Center for Collective Intelligence, and is backed by Accel and Matrix Partners.

Centaur Labs publishes 1 API on the APIs.io network. Tagged areas include Company, Ai, Data Annotation, Data Labeling, and Machine Learning.

Centaur Labs’ developer surface includes documentation, API reference, getting-started guide, engineering blog, support, signup flow, changelog, and 8 more developer resources.

28.2/100 emerging ▬ flat Agent 4/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
1 APIs 1 MCP Servers
CompanyAiData AnnotationData LabelingMachine LearningHealthcareMedical ImagingTraining Data

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 28.2/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 8.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 2.1 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 4/100 · 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 4 / 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/centaur-labs: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

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 a...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Security Posture 3

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

Centaur Labs Authentication

2 schemes

SECURITY

Centaur Labs Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Centaur Labs Trust Center

SOC 2 Type II, HIPAA

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Access & Security 3

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 1

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: centaur-labs
name: Centaur Labs
description: Centaur Labs (centaur.ai) provides expert data annotation and labeling for healthcare and scientific AI. Its
  platform combines large crowds of vetted human experts with AI models in a competitive "collective intelligence" model to
  produce high-quality, aggregated training labels across images, text, audio, video, waveform and DICOM medical imaging.
  Centaur exposes a public REST API (api.centaurlabs.com) for importing data, creating and managing labeling projects, tasks,
  cases, gold standards, tags and prelabels, and for downloading aggregated results. The company is SOC 2 Type II audited
  and HIPAA compliant, was founded by Erik Duhaime out of the MIT Center for Collective Intelligence, and is backed by Accel
  and Matrix Partners.
url: https://raw.githubusercontent.com/api-evangelist/centaur-labs/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
- matrix-partners
x-tier: enriched
x-tier-reason: public-api-found
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
image: https://files.readme.io/90ad1dc-small-Centaur_Labs_black3x.png
tags:
- Company
- Ai
- Data Annotation
- Data Labeling
- Machine Learning
- Healthcare
- Medical Imaging
- Training Data
apis:
- 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: MCPServer
    url: mcp/centaur-labs-mcp.yml
  - type: AgentSkill
    url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.centaurlabs.com/
- type: DeveloperPortal
  url: https://go.centaurlabs.com/
- 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: Blog
  url: https://centaur.ai/blog
- type: Support
  url: https://docs.centaurlabs.com/docs/get-support
- type: SignUp
  url: https://go.centaurlabs.com/signup
- type: Login
  url: https://go.centaurlabs.com/login
- type: PrivacyPolicy
  url: https://centaur.ai/privacy-policy
- type: ChangeLog
  url: https://docs.centaurlabs.com/changelog/welcome-to-centaur
- type: Compliance
  url: conformance/centaur-labs-conformance.yml
- type: TrustCenter
  url: security/centaur-labs-trust-center.yml
- type: DomainSecurity
  url: security/centaur-labs-domain-security.yml
- type: WellKnown
  url: well-known/centaur-labs-well-known.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence