Harness MCP Server

{
  "mcpServers": {
    "harness-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "harness-mcp-v2"
      ],
      "env": {
        "HARNESS_API_KEY": "your-value"
      }
    }
  }
}

claude mcp add --env HARNESS_API_KEY=your-value --transport stdio harness-mcp-server -- npx -y harness-mcp-v2

{
  "mcpServers": {
    "harness-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "harness-mcp-v2"
      ],
      "env": {
        "HARNESS_API_KEY": "your-value"
      }
    }
  }
}

{
  "inputs": [
    {
      "type": "promptString",
      "id": "harness_api_key",
      "description": "HARNESS_API_KEY",
      "password": true
    }
  ],
  "servers": {
    "harness-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "harness-mcp-v2"
      ],
      "env": {
        "HARNESS_API_KEY": "${input:harness_api_key}"
      }
    }
  }
}

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).

• harness_describe

  Discover available resource types, operations, and fields. No API call — returns local registry metadata.

• harness_schema

  Fetch exact YAML/JSON Schema definitions and examples for creating/updating resources.

• harness_list

  List resources of a given type with filtering, search, and pagination.

• harness_get

  Get a single resource by its identifier.

• harness_create

  Create a new resource. Supports inline and remote (Git-backed) pipelines. Prompts for user confirmation via elicitation.

• harness_update

  Update an existing resource. Supports inline and remote (Git-backed) pipelines.

• harness_delete

  Delete a resource. Prompts for user confirmation via elicitation. Destructive.

• harness_execute

  Execute an action on a resource (run/retry pipeline, import pipeline from Git, toggle flag, sync app).

• harness_search

  Search across Harness resource types with a single query. Uses semantic routing (local all-MiniLM-L6-v2 ONNX…

• harness_diagnose

  Diagnose pipeline, connector, delegate, and gitopsapplication resources (aliases: execution -> pipeline, gitopsapp ->…

• harness_status

  Get a real-time project health dashboard — recent executions, failure rates, and deep links.

• branch

  build.type=branch, build.spec.branch=

• pr_number

  build.type=PR, build.spec.number=

• commit_sha

  build.type=commitSha, build.spec.commitSha=

• body

  must be an object with a yaml field. Raw string bodies are rejected by the public harnessexecute schema.

• body.yaml

  may be a YAML string or a JSON pipeline object; JSON is serialized to YAML before the request.

An MCP (Model Context Protocol) server that gives AI agents full access to the Harness.io platform through 11 consolidated tools and 262 resource types.

• harness
• mcp-server
• mcp