Gentrace website screenshot

Gentrace

Gentrace was a developer platform for evaluating and testing LLM and AI applications ("evals as infrastructure"). It provided pipelines, datasets, experiments, and test cases so teams could run offline and online evaluations, grade model outputs, track regressions, and observe AI features in production via OpenTelemetry-based instrumentation. The platform shipped a REST API (v4) secured with bearer API keys, first-party Python and TypeScript/Node SDKs, and a documented object model of pipelines, datasets, experiments, and test cases. Gentrace was based in San Francisco and backed by Matrix Partners. The company has since shut down its hosted product, but its OpenAPI specification, SDK packages, and documentation mirror remain publicly available.

Gentrace publishes 4 APIs on the APIs.io network, including Datasets API, Experiments API, Pipelines API, and 1 more. Tagged areas include Company, Artificial Intelligence, LLM, Evaluation, and Testing.

Gentrace’s developer surface includes authentication, documentation, API reference, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub
25.0/100 emerging ▬ flat Agent 24/100 agent aware Full breakdown ↓
scored 2026-09-19 · rubric v0.22.0
1 APIs
CompanyArtificial IntelligenceLLMEvaluationTestingObservabilityMachine-LearningDeveloper Tools

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-19 · rubric v0.22.0
Composite quality — 25.0/100 · emerging
Contract Quality 11.8 / 23
Developer Ergonomics 3.7 / 18
Access Clarity 0.0 / 18
Operational Transparency 0.3 / 12
Contract Governance 0.5 / 11
Discoverability 6.8 / 9
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 24/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 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
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
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 github.com/api-evangelist/gentrace: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

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

Gentrace Datasets API

The Datasets API from Gentrace — 2 operation(s) for datasets.

Gentrace Experiments API

The Experiments API from Gentrace — 2 operation(s) for experiments.

Gentrace Pipelines API

The Pipelines API from Gentrace — 2 operation(s) for pipelines.

Gentrace Test Cases API

The Test Cases API from Gentrace — 2 operation(s) for test cases.

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Gentrace Datasets API

OPEN COLLECTION

Gentrace Datasets Experiments API

OPEN COLLECTION

Gentrace Datasets Pipelines API

OPEN COLLECTION

Gentrace Datasets TestCases API

OPEN COLLECTION

Security Posture 2

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

Gentrace Authentication

http · 1 scheme

SECURITY

Gentrace Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Gentrace Agentic Access

16 operations · 8 acting

16 operations · 8 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 X-MCPServerCandidate
X-MCPServerCandidate
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog
ErrorCatalog
 Conventions
Conventions
 DataModel
DataModel
 Conformance
Conformance
 Lifecycle
Lifecycle

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Company 1

The organization behind the API

Website
Website

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: gentrace
name: Gentrace
description: Gentrace was a developer platform for evaluating and testing LLM and AI applications ("evals as infrastructure").
  It provided pipelines, datasets, experiments, and test cases so teams could run offline and online evaluations, grade model
  outputs, track regressions, and observe AI features in production via OpenTelemetry-based instrumentation. The platform
  shipped a REST API (v4) secured with bearer API keys, first-party Python and TypeScript/Node SDKs, and a documented object
  model of pipelines, datasets, experiments, and test cases. Gentrace was based in San Francisco and backed by Matrix Partners.
  The company has since shut down its hosted product, but its OpenAPI specification, SDK packages, and documentation mirror
  remain publicly available.
url: https://raw.githubusercontent.com/api-evangelist/gentrace/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- matrix-partners
x-tier: stub
x-tier-reason: portfolio-lead
x-status: shutdown
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
image: https://mintcdn.com/gentrace/9dIPysEl4JbHm2X9/logo/dark.svg
tags:
- Company
- Artificial Intelligence
- LLM
- Evaluation
- Testing
- Observability
- Machine-Learning
- Developer Tools
tags_raw:
- Company
- Ai
- LLM
- Evaluation
- Testing
- Observability
- Machine Learning
- Developer Tools
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: gentrace:gentrace-datasets-api
  name: Gentrace Datasets API
  description: The Datasets API from Gentrace — 2 operation(s) for datasets.
  humanURL: https://gentrace.ai
  baseURL: https://gentrace.ai/api
  tags:
  - Datasets
  properties:
  - type: OpenAPI
    url: openapi/gentrace-datasets-api-openapi.yml
  - type: Documentation
    url: https://docs.gentrace.ai
  - type: APIReference
    url: https://docs.gentrace.ai/reference
- aid: gentrace:gentrace-experiments-api
  name: Gentrace Experiments API
  description: The Experiments API from Gentrace — 2 operation(s) for experiments.
  humanURL: https://gentrace.ai
  baseURL: https://gentrace.ai/api
  tags:
  - Experiments
  properties:
  - type: OpenAPI
    url: openapi/gentrace-experiments-api-openapi.yml
  - type: Documentation
    url: https://docs.gentrace.ai
  - type: APIReference
    url: https://docs.gentrace.ai/reference
- aid: gentrace:gentrace-pipelines-api
  name: Gentrace Pipelines API
  description: The Pipelines API from Gentrace — 2 operation(s) for pipelines.
  humanURL: https://gentrace.ai
  baseURL: https://gentrace.ai/api
  tags:
  - Pipelines
  properties:
  - type: OpenAPI
    url: openapi/gentrace-pipelines-api-openapi.yml
  - type: Documentation
    url: https://docs.gentrace.ai
  - type: APIReference
    url: https://docs.gentrace.ai/reference
- aid: gentrace:gentrace-test-cases-api
  name: Gentrace Test Cases API
  description: The Test Cases API from Gentrace — 2 operation(s) for test cases.
  humanURL: https://gentrace.ai
  baseURL: https://gentrace.ai/api
  tags:
  - Test Cases
  properties:
  - type: OpenAPI
    url: openapi/gentrace-test-cases-api-openapi.yml
  - type: Documentation
    url: https://docs.gentrace.ai
  - type: APIReference
    url: https://docs.gentrace.ai/reference
common:
- type: DomainSecurity
  url: security/gentrace-domain-security.yml
- type: AgenticAccess
  url: agentic-access/gentrace-agentic-access.yml
- type: Authentication
  url: authentication/gentrace-authentication.yml
- type: Website
  url: https://gentrace.ai
- type: Documentation
  url: https://docs.gentrace.ai
- type: APIReference
  url: https://docs.gentrace.ai/reference
- type: GitHubOrganization
  url: https://github.com/gentrace
- type: Packages
  url: packages/gentrace-packages.yml
- type: SDKs
  url: packages/gentrace-packages.yml
- type: ErrorCatalog
  url: errors/gentrace-problem-types.yml
- type: Conventions
  url: conventions/gentrace-conventions.yml
- type: DataModel
  url: data-model/gentrace-data-model.yml
- type: Overlay
  url: overlays/gentrace-openapi-overlay.yaml
- type: Conformance
  url: conformance/gentrace-conformance.yml
- type: X-MCPServerCandidate
  url: mcp/gentrace-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: LLMsTxt
  url: llms/gentrace-llms.txt
- type: Lifecycle
  url: lifecycle/gentrace-lifecycle.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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