Opik MCP

Unclaimed

by comet-ml

Model Context Protocol (MCP) server for Opik, the open-source LLM observability and evaluation platform, built by Comet. Read traces, log scores, and manage prompts from Claude Code, Cursor, or VS Code.

Install

$npx @modelcontextprotocol/inspector uvx opik-mcp

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Tools (16)

ask_ollie

For investigative questions, cross-entity synthesis, or anything that needs

comment.create

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

experiment_item.create

Attach trace + datasetitem rows to an experiment.

experiment.create

Create an experiment scoped to a test suite.

list

Browse a collection with optional name filter and pagination. Project-scoped

prompt_version.save

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

read

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

run_experiment

Run an evaluation experiment end-to-end via Ollie. Takes a single

schema

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

score.create

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

span.create

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

test_suite_item.upsert

Upsert items into a test suite (always the envelope shape).

test_suite.create

Create an evaluation test suite.

trace.create

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

trace.update

Finalize or amend an existing trace.

write

Universal write dispatcher. Pass operation + data and the dispatcher