Braintrust MCP for AI Agents

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Braintrust MCP or direct API to manage prompts, inspect experiments, query evaluations, and review production traces through natural language.

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Api Key

Braintrust is an AI engineering platform for prompts, datasets, experiments, evaluations, observability, and production AI apps. Use it to ship better AI systems with faster debugging, clearer evals, and tighter feedback loops.

17 Tools

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TOOL ROUTER PLAYGROUND
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TOOLS

Supported Tools

Every Braintrust action and event your agent gets out of the box.

Create Dataset

Create a named dataset under a Braintrust project, or return the existing dataset unchanged when its name already exists in that project.

Create Experiment

Create an experiment under a Braintrust project.

Create Project

Create a Braintrust project, or return the existing project unchanged when its name already exists.

Create Prompt

Upsert a versioned prompt configuration under a Braintrust project without invoking it.

Delete Project

Soft-delete a Braintrust project and return its deletion state.

Delete Experiment, Dataset, or Prompt

Delete one Braintrust experiment, dataset, or prompt by UUID for explicit lifecycle cleanup.

Fetch Events

Fetch one newest-to-oldest page of project log, experiment, or dataset events.

Get Braintrust Resource

Get one project, experiment, dataset, prompt, or function by UUID.

Insert Dataset Events

Upsert a batch of examples into an existing Braintrust dataset.

Insert Experiment Events

Upsert a batch of result events into an existing Braintrust experiment.

List Braintrust Resources

List and filter one page of projects, experiments, datasets, prompts, or functions visible to the connected Braintrust API key.

Query Braintrust Data

Run one bounded synchronous read-only BTQL query over Braintrust project logs, an experiment, or a dataset.

Summarize Experiment or Dataset

Return metadata and optional aggregate summaries for one Braintrust experiment or dataset.

Update Dataset

Update the name, description, tags, or metadata of a Braintrust dataset.

Update Experiment

Update selected metadata and linkage fields on a Braintrust experiment.

Update Project

Update selected fields of a Braintrust project.

Update Prompt

Update a Braintrust prompt's metadata or configuration without invoking it.

SETUP GUIDE

Connect Braintrust MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["braintrust"],
  mcp: true,
});
Create a session scoped to Braintrust and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "List recent Braintrust experiments and summarize failed evaluations",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a Braintrust request
SETUP GUIDE

Connect Braintrust API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["braintrust"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Braintrust
3

Run Braintrust tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "List recent Braintrust experiments and summarize failed evaluations" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the Braintrust tool calls through the session, and print the final answer

Why Use Composio?

AI Native Braintrust Integration

  • Supports both Braintrust MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable prompt, dataset, and experiment workflows
  • Rich coverage for reading, writing, and querying your Braintrust AI engineering data

Managed Auth

  • Secure API key handling without hard-coding Braintrust credentials in your agent code
  • Central place to manage, scope, and revoke Braintrust access
  • Per user and per environment credentials, so staging and production stay cleanly separated

Agent Optimized Design

  • Tools are tuned for language models, so agents can inspect experiments and evaluations with fewer broken calls
  • Clear tool schemas help agents understand Braintrust resources like prompts, datasets, logs, and traces
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Braintrust
  • Scoped, least privilege access to Braintrust projects, experiments, and observability data
  • Full audit trail of agent actions to support review, debugging, and compliance
FAQ

Frequently asked questions

Yes, Braintrust requires you to configure your own API key. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. Learn more.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

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