Braintrust (EU) MCP connector
The Braintrust (EU) connector brings experiments, traces, patterns and monitoring views from Braintrust's EU region into Claude, ChatGPT, Cursor and the Elaichi Agent, so each person asks questions and runs work inside their own Braintrust access.
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How it connects. Connects over OAuth. The credential goes into a vault nobody reads back.
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One address. https://api.elaichi.ai/mcp, the same for every user.
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Their own access. An agent never gets more than the person it acts for.
How to connect
How to connect Braintrust (EU) to Claude, ChatGPT or Cursor
Two steps, about a minute.
In Elaichi
Connect Braintrust (EU) once
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Open Connections, choose Add connection, and pick Braintrust (EU).
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Optionally set Share with to give a team access, then press Connect.
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Approve it in Braintrust (EU). Braintrust (EU)'s own window opens. Whoever approves it decides what this connection can reach.
The credential is vaulted. Nobody reads it back, not even the AI.
Add connection
Choose a connector.
In your AI client
Point it at one endpoint
Everyone in the organization uses the same address, and each person only ever reaches what their own account allows.
Braintrust (EU) MCP connector for Claude
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1
Open Customize, then Connectors.
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2
Press Add.
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3
Name it, paste the MCP server URL, then Continue.
https://api.elaichi.ai/mcp -
4
Sign in and approve.
On Team and Enterprise, an Owner adds it once. Everyone else turns it on for themselves.
Braintrust (EU) MCP connector for ChatGPT
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1
Open Plugins, then press the + button.
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2
Name it and paste the endpoint into Server URL.
https://api.elaichi.ai/mcp -
3
Leave Authentication on OAuth, then tick the risk acknowledgement.
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4
Press Create, then sign in and approve.
Works on the web today. The plugin directory lives at chatgpt.com/plugins.
Braintrust (EU) MCP connector for Cursor
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1
Open
~/.cursor/mcp.json. -
2
Add the endpoint under
mcpServers.https://api.elaichi.ai/mcp -
3
Reload Cursor, then sign in and approve.
~/.cursor/mcp.json
{
"mcpServers": {
"elaichi": {
"url": "https://api.elaichi.ai/mcp"
}
}
}
Set up per machine, so repeat it on each computer you work from.
Connect Braintrust (EU) to any MCP client
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1
Add the endpoint as a remote MCP server.
https://api.elaichi.ai/mcp -
2
Sign in and approve.
{
"mcpServers": {
"elaichi": {
"url": "https://api.elaichi.ai/mcp"
}
}
}
The Elaichi Agent already has these tools, with nothing to set up.
Use cases
What teams do with Braintrust (EU) through Elaichi
Every one of these runs inside the access the person already has, and lands in the same audit log.
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AI engineering
Summarize an experiment before standup
Ask for a plain-language summary of last night's experiment in Braintrust (EU), with the scores that moved and the cases that regressed, without opening the dashboard.
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Data
Query traces and logs with SQL
Run a SQL query across traces and logs in the EU region, or ask the agent to infer the schema of a project first so the query is right the first time.
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Product
Turn a recurring failure into a pattern
Search existing patterns, draft a new one for the failure you keep seeing, and refine it as the examples change.
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Support
Work through flagged traces as a queue
Pull the trace work items assigned to you, review each one, and update the work report so the team can see what has been handled.
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Quality
Test a facet or preprocessor on one trace
Create a facet or a preprocessor and try it on a single trace to check it does what you meant before it touches everything.
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Operations
Stand up a monitoring view for a release
Generate a monitor chart for latency or cost, list the monitoring views that already exist, and create a new one for the release going out this week.
Try asking
- “Summarize the latest experiment in the checkout assistant project.”
- “Which traces from this week match the hallucination pattern?”
- “Create a monitoring view for latency on the support bot.”
Compare
Elaichi vs Zapier MCP vs Composio for Braintrust (EU)
All three can connect Braintrust (EU) to an AI assistant, and all three have admin controls. They differ in where access lives and how you pay.
| What to check | Elaichi | Zapier MCP | Composio |
|---|---|---|---|
| Where the AI connects |
One address for the whole organization.
https://api.elaichi.ai/mcp
|
A server per member, created at sign-in. | An MCP endpoint per team, or an SDK. |
| Control over Braintrust (EU) tools | Allow or restrict single Braintrust (EU) tools, per role or user. | App and action restrictions on the account. | Role permissions, down to the action. |
| Record of calls | One audit entry per Braintrust (EU) call. | A History tab of tool calls. | A log of every tool call. |
| Single sign-on | SAML or OIDC, plus SCIM, on Gold. | SAML on Enterprise. | SAML and OIDC on Enterprise. |
| Price | $15 per user per month. | 2 tasks per successful call. | Billed per tool call. |
Sources: Zapier MCP docs, security, usage; Composio docs, gateway, enterprise, pricing. Checked September 2026.
Longer take: Zapier MCP alternative and when you don't need an MCP gateway.
AI tools
Braintrust (EU) tools for your AI agents
43 tools are ready to call through Elaichi's MCP endpoint the moment you connect Braintrust (EU), governed by the same roles, restrictions, and audit log as everything else in Elaichi. Braintrust (EU) builds and runs these tools.
No tools match your search.
See it in Elaichi
What connecting Braintrust (EU) gets you
6 screens from the product, each doing one job for your Braintrust (EU) account.
The agent
Ask about experiments and traces in plain language.
Three starter prompts pull answers from live Braintrust (EU) records, no query to write.
- experiments
- traces
- patterns
- monitoring views
Ask Elaichi to work across your apps.
Summarize the latest experiment in the checkout assistant project.
Which traces from this week match the hallucination pattern?
Create a monitoring view for latency on the support bot.
Also runs in Claude, ChatGPT or Cursor
MCP clients
One endpoint reaches Braintrust (EU) from any client.
Claude, ChatGPT and Cursor sign in over OAuth, no SDK and no shared API key.
Copy the endpoint
Tool catalog
43 tools cover experiments, traces, patterns and monitoring.
Every resource and method in Braintrust (EU) is listed, with no custom code to write.
- SQL query
- Infer schema
- Summarize experiment
- List recent objects
Toolboxes
Each team gets its own Braintrust (EU) toolbox.
AI engineering, product and support each see the tools their work in Braintrust needs.
- AI engineering
- Data
- Product
- Support
Shared connections
Teammates work through one connection, never a credential.
One person connects Braintrust (EU) and shares it with teams who never see the token.
- Evals
- Support review
- Product
- Data
Audit log
Every call to Braintrust (EU) is on record.
Who ran which query, created which pattern, and when, in one append-only log.
- When
- Who
- What happened
- Type
Launching soon
From answering questions to doing the work
A person no longer has to ask. A trigger starts the work, inside the same permissions and the same audit log as everything else. Automations and live dashboards are launching soon, on the Black plan.
Automations
A schedule starts the work, a person approves.
Recent Braintrust (EU) traces are fetched, grouped, drafted into a digest, approved and posted back.
Braintrust (EU) digest
Run 418 · started 2 minutes ago · on behalf of Emily Carter
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✓
Schedule
Every weekday at 8:00 AM
0.2s -
✓
Fetch experiments
Braintrust (EU)
1.4s -
✓
Group by owner
Transform
0.1s -
✓
Draft the digest
Agent step
Ran with 4 tools, returned a structured summary
6.2s -
Approve the digest
Needs approval
Assigned to Michael Brennan
Approve Deny -
Post the digest
Braintrust (EU)
Queued
Collections and dashboards
Braintrust (EU) health, computed without a model.
Four metrics, 14 days of experiments created and a team breakdown, refreshed on schedule.
Braintrust (EU) health
Refreshed 4 minutes ago · every 15 minutes · from the experiments collection
Experiments
1,284 ↓ 12%
Traces
96 ↓ 8%
Needs attention
3 ↑ 2
Updated this week
412 ↑ 9%
Experiments created
Last 14 days
By team
Share of activity
Evals 34%
Support review 27%
Product 21%
Data 18%
FAQ
Frequently asked questions
How do I connect Braintrust (EU) to Claude?
Two steps. In Elaichi, choose Braintrust (EU), and sign in to Braintrust's EU region over OAuth in your browser, approving the request the way you would any normal sign-in. Then in Claude open Customize, then Connectors, then Add, and paste https://api.elaichi.ai/mcp. There is no client ID or secret to generate.
Does Braintrust (EU) work with ChatGPT and Cursor as well as Claude?
Yes. Braintrust in EU is connected once in Elaichi, and the same endpoint, https://api.elaichi.ai/mcp, is added to Claude, ChatGPT, Cursor, any other MCP client and the Elaichi Agent. Nothing is set up per client.
What can an AI agent actually do with my Braintrust (EU) data?
Once Braintrust in EU is connected, an agent can summarize an experiment, run a SQL query over traces and logs, work out the schema of a project, pull up recent objects and link straight to them, search and create patterns, draft a facet or preprocessor and test it on a trace, manage topics automation, and generate monitoring charts and views. Short, concrete asks work better than long sentences, so "summarize yesterday's experiment" beats a paragraph.
Does connecting Braintrust (EU) give the AI access to every project in my organization?
No. Access follows the person who signed in to Braintrust's EU region, so the agent sees the projects, experiments and traces that person already has permission to see, and nothing more. Elaichi can narrow that access further for a team, and it can never widen it beyond what Braintrust itself allows.
Can I stop an agent from changing or updating things in Braintrust (EU)?
Yes. Restrictions on Braintrust in EU work per action, so you can allow summarizing experiments and querying traces while blocking the creation of patterns, changes to monitoring views or switching on topics automation. A restricted action is never advertised to the AI client, so no prompt, however worded, can reach it.
What happens to a Braintrust (EU) connection when someone leaves?
Offboarding that person in Elaichi ends their access to Braintrust in EU at once, across every client they used. A connection they shared with the team keeps working for everyone else. Disconnecting Braintrust (EU) once in Elaichi removes it from Claude, ChatGPT, Cursor and every other client at the same time.
Does the Braintrust (EU) MCP connector work with Gemini, Codex, Claude Code or other MCP clients?
Yes. Braintrust (EU) is reached over the same MCP endpoint every client uses, so anything that speaks MCP can call it — Gemini, Codex, Claude Code, Windsurf, Cline, Zed and OpenCode among them — alongside Claude, ChatGPT, Cursor, and the Elaichi Agent. The tools on offer and the access behind them are identical whichever client asks. Only the setup screen differs.
Is Elaichi an alternative to Zapier MCP for Braintrust (EU)?
Yes. Both let Claude, ChatGPT or Cursor use Braintrust (EU). Zapier MCP fits a team that already automates in Zapier, since each person signs in and acts as themselves in that account. Elaichi fits when IT wants one address for the whole company, per-tool rules by role, and a record of every Braintrust (EU) call.
How is Elaichi different from Composio for Braintrust (EU)?
Composio gives AI agents tools and sign-in handling across 1,000+ apps, for developers building agents or people using an assistant, billed per tool call. Elaichi gives a company's own people governed access to Braintrust (EU): one address, restrictions per role or user, and $15 per user per month. Both have role permissions and a log of every call.
Put Braintrust (EU) in front of your team
14 days on Gold, no credit card. Connect it once and pick what each team can call.
- Works with
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and any other MCP client, or the Elaichi Agent.
- When the trial ends
- Nothing is deleted. Connections, roles and the audit log stay where they are, so subscribing picks up exactly where you left off.