Braintrust website screenshot

Braintrust

Braintrust (braintrust.dev) is an end-to-end platform for building, evaluating, and observing AI applications. Its REST API at api.braintrust.dev exposes projects, experiments, datasets, logs/spans, prompts, functions and scorers, evals, and full organization/ACL management, plus an OpenAI-compatible AI proxy, all authenticated with a Bearer API key.

Braintrust publishes 12 APIs on the APIs.io network, including ACL API, AI Proxy API, Credentials API, and 9 more. Tagged areas include AI, LLM, Evaluation, Observability, and LLMOps.

The Braintrust catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Braintrust’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
43.6/100 developing ▬ flat Agent 36/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessPaidSelf serve
12 APIs
AILLMEvaluationObservabilityLLMOps

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 43.6/100 · developing
Contract Quality 16.6 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 2.5 / 12
Discoverability 7.4 / 10
Agent readiness — 36/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
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/braintrust-data: 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 12

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

Braintrust ACL API

The ACL API from Braintrust — 4 operation(s) for acl.

Braintrust AI Proxy API

The AI Proxy API from Braintrust — 3 operation(s) for ai proxy.

Braintrust Credentials API

The Credentials API from Braintrust — 3 operation(s) for credentials.

Braintrust Datasets API

The Datasets API from Braintrust — 6 operation(s) for datasets.

Braintrust Evals API

The Evals API from Braintrust — 1 operation(s) for evals.

Braintrust Experiments API

The Experiments API from Braintrust — 6 operation(s) for experiments.

Braintrust Functions API

The Functions API from Braintrust — 3 operation(s) for functions.

Braintrust Logs API

The Logs API from Braintrust — 3 operation(s) for logs.

Braintrust Organization API

The Organization API from Braintrust — 3 operation(s) for organization.

Braintrust Project Configuration API

The Project Configuration API from Braintrust — 4 operation(s) for project configuration.

Braintrust Projects API

The Projects API from Braintrust — 2 operation(s) for projects.

Braintrust Prompts API

The Prompts API from Braintrust — 2 operation(s) for prompts.

Scroll for all 12

Open Collections 1

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

Braintrust REST API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Braintrust Data Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Braintrust Data Rate Limits

7 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Braintrust Data Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Braintrust Streaming (SSE) API

AsyncAPI description of Braintrust's documented HTTP Server-Sent Events (SSE) streams. Braintrust does NOT expose a WebSocket API. Streaming is delivered as one-way HTTP SSE ove...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Braintrust API Rules

4 rules · 1 errors 3 warnings

SPECTRAL

Security Posture 2

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

Braintrust Data Authentication

http · 1 scheme

SECURITY

Braintrust Data Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Braintrust Data Agentic Access

69 operations · 42 acting

69 operations · 42 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: braintrust-data
url: https://raw.githubusercontent.com/api-evangelist/braintrust-data/refs/heads/main/apis.yml
name: Braintrust
kind: company
description: Braintrust (braintrust.dev) is an end-to-end platform for building, evaluating, and observing AI applications.
  Its REST API at api.braintrust.dev exposes projects, experiments, datasets, logs/spans, prompts, functions and scorers,
  evals, and full organization/ACL management, plus an OpenAI-compatible AI proxy, all authenticated with a Bearer API key.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/braintrust-data.png
tags:
- AI
- LLM
- Evaluation
- Observability
- LLMOps
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.19'
apis:
- aid: braintrust-data:braintrust-data-acl-api
  name: Braintrust ACL API
  description: The ACL API from Braintrust — 4 operation(s) for acl.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - ACL
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-acl-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-ai-proxy-api
  name: Braintrust AI Proxy API
  description: The AI Proxy API from Braintrust — 3 operation(s) for ai proxy.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - AI Proxy
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-ai-proxy-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-credentials-api
  name: Braintrust Credentials API
  description: The Credentials API from Braintrust — 3 operation(s) for credentials.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - Credentials
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-credentials-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-datasets-api
  name: Braintrust Datasets API
  description: The Datasets API from Braintrust — 6 operation(s) for datasets.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - Datasets
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-datasets-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-evals-api
  name: Braintrust Evals API
  description: The Evals API from Braintrust — 1 operation(s) for evals.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - Evals
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-evals-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-experiments-api
  name: Braintrust Experiments API
  description: The Experiments API from Braintrust — 6 operation(s) for experiments.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - Experiments
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-experiments-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-functions-api
  name: Braintrust Functions API
  description: The Functions API from Braintrust — 3 operation(s) for functions.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - Functions
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-functions-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-logs-api
  name: Braintrust Logs API
  description: The Logs API from Braintrust — 3 operation(s) for logs.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - Logs
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-logs-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-organization-api
  name: Braintrust Organization API
  description: The Organization API from Braintrust — 3 operation(s) for organization.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - Organization
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-organization-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-project-configuration-api
  name: Braintrust Project Configuration API
  description: The Project Configuration API from Braintrust — 4 operation(s) for project configuration.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - Project Configuration
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-project-configuration-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-projects-api
  name: Braintrust Projects API
  description: The Projects API from Braintrust — 2 operation(s) for projects.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-projects-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
- aid: braintrust-data:braintrust-data-prompts-api
  name: Braintrust Prompts API
  description: The Prompts API from Braintrust — 2 operation(s) for prompts.
  humanURL: https://www.braintrust.dev/docs/api-reference
  baseURL: https://api.braintrust.dev/v1
  tags:
  - Prompts
  properties:
  - type: OpenAPI
    url: openapi/braintrust-data-prompts-api-openapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/reference/api
  - type: APIReference
    url: https://www.braintrust.dev/docs/api-reference
  - type: PostmanCollection
    url: collections/braintrust-data.postman_collection.json
  - type: OpenCollection
    url: collections/braintrust-data.opencollection.json
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/evals
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/datasets
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/logging
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/prompts
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/functions
  - type: AsyncAPI
    url: asyncapi/braintrust-data-asyncapi.yml
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/access-control
  - type: Documentation
    url: https://www.braintrust.dev/docs/guides/proxy
common:
- type: AgenticAccess
  url: agentic-access/braintrust-data-agentic-access.yml
- type: DomainSecurity
  url: security/braintrust-data-domain-security.yml
- type: Authentication
  url: authentication/braintrust-data-authentication.yml
- type: GitHubOrganization
  url: https://github.com/braintrustdata
- type: LinkedIn
  url: https://www.linkedin.com/company/braintrustdata
- type: Website
  url: https://www.braintrust.dev/
- type: Documentation
  url: https://www.braintrust.dev/docs
- type: Plans
  url: plans/braintrust-data-plans-pricing.yml
- type: RateLimits
  url: rate-limits/braintrust-data-rate-limits.yml
- type: FinOps
  url: finops/braintrust-data-finops.yml
- url: https://www.braintrust.dev/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com