Opik

{
  "mcpServers": {
    "opik": {
      "command": "uvx",
      "args": [
        "opik-mcp"
      ],
      "env": {
        "OPIK_API_KEY": "your-value"
      }
    }
  }
}

claude mcp add --env OPIK_API_KEY=your-value --transport stdio opik -- uvx opik-mcp

{
  "mcpServers": {
    "opik": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "opik-mcp"
      ],
      "env": {
        "OPIK_API_KEY": "your-value"
      }
    }
  }
}

{
  "inputs": [
    {
      "type": "promptString",
      "id": "opik_api_key",
      "description": "OPIK_API_KEY",
      "password": true
    }
  ],
  "servers": {
    "opik": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "opik-mcp"
      ],
      "env": {
        "OPIK_API_KEY": "${input:opik_api_key}"
      }
    }
  }
}

claude mcp add --transport http opik "https://www.comet.com/opik/api/v1/mcp"

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

• read_skill

  Read one of the Opik agent skills bundled with this server

• read

  One tool for any "show me X" question. Takes an entitytype plus an id

• list

  Browse or search a collection with pagination. Project-scoped types (trace,

• write

  Universal write dispatcher. Pass operation + data and the dispatcher

• trace.create

  Log a single trace (or a batch). Parent for spans / scores / comments.

• trace.update

  Finalize or amend an existing trace.

• span.create

  Log a span on an existing trace (or a batch).

• score.create

  Attach a numeric feedback score to a trace, span, or thread.

• comment.create

  Attach a free-text comment to a trace, span, or thread.

• prompt_version.save

  Save a new prompt version (creates the prompt by name if missing).

• dataset.create

  Create a dataset — type: "testsuite" makes it an evaluation test suite.

• dataset_item.upsert

  Upsert items into a dataset (always the envelope shape).

• experiment.create

  Create an experiment scoped to a dataset.

• experiment_item.create

  Attach trace + dataset_item rows to an experiment.

• thread.close

  Close a thread (mark it inactive). Pass threadid and the project.

• thread.open

  Reopen a closed thread. Pass threadid and the project.

• agent_insights_job.enable

  Turn Diagnostics on for a project (daily scans, safe to repeat).

• agent_insights_job.trigger

  Run a Diagnostics scan now, over the last 24 hours.

• agent_insights_issue.resolve

  Mark a Diagnostics issue dealt with (ask the user first).

• agent_insights_issue.close

  Mark a Diagnostics issue not worth acting on (ask the user first).

• agent_insights_issue.reopen

  Put a resolved or closed Diagnostics issue back on the open list.

• schema

  Inspect the exact JSON shape and required fields of any write operation before

The official Model Context Protocol (MCP) server for Opik, the open-source LLM observability and evaluation platform, built by Comet. Plug your AI host (Claude Code, Cursor, VS Code Copilot, Codex, opencode, or any MCP client) directly into your Opik workspace: read traces, log scores, and save prompt versions, all from the chat.

• mcp-server
• claude-code
• llm-observability
• mcp
• model-context-protocol
• opik
• python
• generative-ai