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.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Centaur Labs the way a machine reads it — 44 machine-readable artifacts across 5 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Centaur Labs scores 46.8/100 (developing), with a separate agent-readiness read of 26/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-10-17 · rubric v0.24.0
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How we profile Centaur Labs
Each block below is one kind of artifact we hold for Centaur Labs. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 17
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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 within the panel for all 17 ·
Semantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Centaur Labs Context
JSON-LDSpectral Rules 1
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Centaur Labs API Rules
SPECTRALJSON Schema 21
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
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 within the panel for all 21 ·
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Centaur Labs — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
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
← All providers · Data indexed from github.com/api-evangelist/centaur-labs · machine-readable index on apis.io
This is an independent, third-party profile of Centaur Labs, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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