Braintrust
Braintrust is an enterprise-grade AI observability and evaluation platform for teams building LLM applications. It provides experiment tracking, dataset management, production tracing, prompt versioning, online and offline scoring, and human review workflows. Customers include AI-native startups and large enterprises that need to compare models, iterate on prompts, catch regressions, and leverage real user data to continuously improve their AI features. Braintrust offers a SaaS platform, plus self-hosted deployments in AWS, GCP, and Azure, and monetizes through usage-based pricing tied to spans and seats.
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 Braintrust the way a machine reads it — 36 machine-readable artifacts across 29 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 — Braintrust scores 45.8/100 (developing), with a separate agent-readiness read of 48/100 (agent ready). 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.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Braintrust
Each block below is one kind of artifact we hold for Braintrust. 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 29
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.
Braintrust API
The Braintrust REST API provides programmatic access to projects, experiments, datasets, prompts, functions, logs, and organization resources. It supports both US (api.braintrus...
Braintrust Acls API
The Acls API from Braintrust — 4 operation(s) for acls.
Braintrust AiSecrets API
The AiSecrets API from Braintrust — 2 operation(s) for aisecrets.
Braintrust ApiKeys API
The ApiKeys API from Braintrust — 2 operation(s) for apikeys.
Braintrust CORS API
The CORS API from Braintrust — 65 operation(s) for cors.
Braintrust CrossObject API
The CrossObject API from Braintrust — 1 operation(s) for crossobject.
Braintrust Datasets API
The Datasets API from Braintrust — 6 operation(s) for datasets.
Braintrust DatasetSnapshots API
The DatasetSnapshots API from Braintrust — 2 operation(s) for datasetsnapshots.
Braintrust Environments API
The Environments API from Braintrust — 2 operation(s) for environments.
Braintrust EnvVars API
The EnvVars API from Braintrust — 2 operation(s) for envvars.
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 Groups API
The Groups API from Braintrust — 2 operation(s) for groups.
Braintrust Logs API
The Logs API from Braintrust — 3 operation(s) for logs.
Braintrust McpServers API
The McpServers API from Braintrust — 2 operation(s) for mcpservers.
Braintrust Organizations API
The Organizations API from Braintrust — 3 operation(s) for organizations.
Braintrust Other API
The Other API from Braintrust — 1 operation(s) for other.
Braintrust ProjectAutomations API
The ProjectAutomations API from Braintrust — 2 operation(s) for projectautomations.
Braintrust Projects API
The Projects API from Braintrust — 2 operation(s) for projects.
Braintrust ProjectScores API
The ProjectScores API from Braintrust — 2 operation(s) for projectscores.
Braintrust ProjectTags API
The ProjectTags API from Braintrust — 2 operation(s) for projecttags.
Braintrust Prompts API
The Prompts API from Braintrust — 2 operation(s) for prompts.
Braintrust Proxy API
The Proxy API from Braintrust — 6 operation(s) for proxy.
Braintrust Roles API
The Roles API from Braintrust — 2 operation(s) for roles.
Braintrust ServiceTokens API
The ServiceTokens API from Braintrust — 2 operation(s) for servicetokens.
Braintrust SpanIframes API
The SpanIframes API from Braintrust — 2 operation(s) for spaniframes.
Braintrust Users API
The Users API from Braintrust — 2 operation(s) for users.
Braintrust Views API
The Views API from Braintrust — 2 operation(s) for views.
Scroll within the panel for all 29 ·
Open Collections 1
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Braintrust API
OPEN COLLECTIONPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Braintrust Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Braintrust Finops
FINOPSSecurity Posture 2
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 Braintrust — 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.
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 1
Properties that don't map to a standard resource type
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