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 17 API contracts indexed on the APIs.io network, including Add and Manage Labels API, Add and Manage Projects API, Add and Manage Tasks API, and 14 more. Tagged areas include Company, Artificial Intelligence, Data Annotation, Data Labeling, and Machine Learning.
The Centaur Labs catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
Centaur Labs’ developer surface includes sandbox, documentation, API reference, getting-started guide, engineering blog, support, signup flow, and 17 more developer resources.
Kin Score
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| Medical Imaging & IHE Interoperability Profiles | undeclared | - | - | - |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards implemented 1
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 17
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...
Centaur Labs Add and Manage Labels API
Set and remove gold standard answers and prelabels on the cases in a task.
Centaur Labs Add and Manage Projects API
Create, update, list, and delete projects.
Centaur Labs Add and Manage Tasks API
Create and configure labeling tasks, including their answer classes, label class groups, and instructions.
Centaur Labs Create and Manage Cases API
Create, duplicate, update, and delete the individual cases that labelers work on.
Centaur Labs Get API Version API
The Get API Version API from Centaur Labs — 4 operation(s) for get api version.
Centaur Labs Get Case Results API
The Get Case Results API from Centaur Labs — 2 operation(s) for get case results.
Centaur Labs Get Task Results API
The Get Task Results API from Centaur Labs — 3 operation(s) for get task results.
Centaur Labs Import and Manage Data API
Import assets from cloud storage or URLs, and manage the resulting assets and file manifests.
Centaur Labs Login API
The Login API from Centaur Labs — 1 operation(s) for login.
Centaur Labs Logout API
The Logout API from Centaur Labs — 1 operation(s) for logout.
Centaur Labs Masks Public API
The masks-public API from Centaur Labs — 2 operation(s) for masks-public.
Centaur Labs Reads (Opinions) Lookup API
The Reads (Opinions) Lookup API from Centaur Labs — 1 operation(s) for reads (opinions) lookup.
Centaur Labs Refresh Token API
The Refresh Token API from Centaur Labs — 1 operation(s) for refresh token.
Centaur Labs Tags API
Organize cases and assets by applying, removing, and listing tags.
Centaur Labs Test Token API
The Test Token API from Centaur Labs — 1 operation(s) for test token.
Centaur Labs Version API
Report the running version of the Ingest API.
Scroll for all 17
Agent Skills 2
Packaged agent skills for driving this provider's APIs from an AI assistant.
download-labeling-results
AGENT SKILLimport-data-for-labeling
AGENT SKILLSemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Centaur Labs Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Centaur Labs API Rules
SPECTRALJSON Schema 21
Standalone JSON Schema definitions for this provider's data models.
CaseResultList
JSON SCHEMACaseResult
JSON SCHEMACommitMasksRequestPublicApi
JSON SCHEMACommitMasksResponse
JSON SCHEMAExistingTaskClassification
JSON SCHEMAExistingTaskClassification_V2
JSON SCHEMAExistingTaskRange
JSON SCHEMAExistingTaskSegmentation
JSON SCHEMAGeneratePresignedURLsRequest
JSON SCHEMAGeneratePresignedURLsResponse
JSON SCHEMAMessageResponse
JSON SCHEMAPublicLoginRequest
JSON SCHEMAPublicLoginResponse
JSON SCHEMAReadsLookupRequest
JSON SCHEMAReadsLookup
JSON SCHEMARefreshTokenResponse
JSON SCHEMAResultListV1
JSON SCHEMAResultV1
JSON SCHEMATaskClassification_V2
JSON SCHEMATaskRange_V2
JSON SCHEMAVersionResponse
JSON SCHEMAScroll for all 21
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 5
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 4
Pagination, idempotency, versioning, errors, and events
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 3
The organization behind the API
Other 2
Properties that don't map to a standard resource type
Source (apis.yml)
Centaur Labs API — frequently asked questions
Does Centaur Labs have an API?
Yes. APIs.io lists 17 APIs from Centaur Labs, including Centaur Public API, Centaur Labs Add and Manage Labels API and Centaur Labs Add and Manage Projects API, and 14 more.
Is there an OpenAPI specification for the Centaur Labs API?
Yes. APIs.io indexes 16 OpenAPI specifications for Centaur Labs, each linked for download from this page.
How do I authenticate with the Centaur Labs API?
Centaur Labs uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Centaur Labs Authentication.
Is the Centaur Labs API ready for AI agents?
Centaur Labs has a Kin Score of 50.1 out of 100 (developing) and an Agent Readiness score of 27.7 (agent-aware), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.