Blacksmith

Name: Blacksmith
Author: grahamnotgrant

by grahamnotgrantcommunityv0.1.1

Blacksmith MCP is an MCP server that connects Claude to Blacksmith CI data, allowing users to query workflow runs, analyze test failures, detect flaky tests, and monitor usage through natural conversation.

From the registry: MCP server for Blacksmith CI - query runs, analyze test failures, detect flaky tests.

GitHub Repository

Install & configure

Prerequisites

required
Blacksmith account + Chrome session
Log in at app.blacksmith.sh in Chrome so the MCP server can auto-extract your session cookie (or set BLACKSMITH_SESSION_COOKIE manually).
https://app.blacksmith.sh

Install in your client

Paste into the AI you're chatting with — it will figure out the rest

Please install the `blacksmith` MCP server into my current AI client (that's you).

Required prerequisites (do these first if not already done):
- **Blacksmith account + Chrome session** — Log in at app.blacksmith.sh in Chrome so the MCP server can auto-extract your session cookie (or set BLACKSMITH_SESSION_COOKIE manually). (https://app.blacksmith.sh)

Canonical MCP server config (stdio transport):
- command: `npx`
- args: ["blacksmith-mcp"]
- required environment variables:
  - `BLACKSMITH_ORG`: Blacksmith organization name (example: `<your-blacksmith-org>`)
- optional environment variables:
  - `BLACKSMITH_SESSION_COOKIE`: Blacksmith session cookie (auto-extracted from Chrome when possible) (example: `<your-blacksmith-session-cookie>`)

Add this MCP server to my current client's config in the correct format for you. If you need secrets or credentials I haven't provided, ASK me — do not invent values or leave raw placeholders. After adding it, tell me how to verify the server is connected.

Tools (21)

list_runs

List workflow runs with filters (status, branch, workflow, actor, PR)

get_run

Get run details including all jobs

list_jobs

List jobs for a workflow run

get_job

Get job details (steps, timing, runner info)

get_job_logs

Get raw log output for a job

get_job_tests

Get all test results for a job

get_failed_tests

Get failed tests with full error messages

get_failures_by_pattern

Group failures by error pattern (e.g., 'Cannot read properties')

compare_test_runs

Compare failures between two runs (find regressions)

get_flaky_tests

Detect tests that fail intermittently

get_slow_tests

Find tests exceeding duration threshold

get_test_history

Track a specific test's pass/fail history

get_trends

Analyze trends: duration, failure rate, test count

get_current_usage

Environment variables

BLACKSMITH_ORGrequiredYour Blacksmith organization name

BLACKSMITH_SESSION_COOKIESession cookie (auto-extracted from Chrome if not set)

Packages

blacksmith-mcp

npmv0.1.1transport: stdio

Details

Language: TypeScript
License: MIT
Released: Jan 20, 2026
Last commit: Apr 30, 2026
Registry name: io.github.grahamnotgrant/blacksmith

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