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Harness MCP server
Local MCP server for Harness. It starts, waits for, reads, and closes Harness sessions running Claude Code or Codex agents. The npm package is @autonomous-ai/harness-mcp.
★ 1,291 GitHub stars · 2026-10-19
| Transport | stdio (local, npm), stdio (local, mcpb) |
|---|---|
| Auth | No secrets declared in registry entry |
| Registry name | ai.autonomous.harness/harness · 0.4.20 |
| Source | https://github.com/autonomous-ai/openharness |
| Remote endpoints | None declared |
| Data source | Official MCP Registry |
| Kind | Vendor |
| GitHub stars | 1,291 GitHub stars, fetched 2026-10-19 |
| Date checked | 2026-10-20 |
| License | MIT |
| Last commit | 2026-10-17 |
Install
Configs are generated only from packages and remotes on the registry entry. Empty optional flags are listed instead of inserted. Nothing is added that the entry does not declare.
Local package (npm)
{
"mcpServers": {
"harness-3": {
"command": "npx",
"args": [
"-y",
"@autonomous-ai/[email protected]"
]
}
}
}{
"mcpServers": {
"harness-3": {
"command": "npx",
"args": [
"-y",
"@autonomous-ai/[email protected]"
]
}
}
}{
"servers": {
"harness-3": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@autonomous-ai/[email protected]"
]
}
}
}{
"mcpServers": {
"harness-3": {
"command": "npx",
"args": [
"-y",
"@autonomous-ai/[email protected]"
]
}
}
}claude mcp add harness-3 -- npx -y @autonomous-ai/[email protected]
MCPB bundle
The entry publishes a bundle URL. No shell command is invented for it.
https://github.com/autonomous-ai/openharness/releases/download/v0.4.20_cli/harness-mcp.mcpb
FAQ
What transport does Harness use?
stdio (local, npm), stdio (local, mcpb).
What credentials are declared for Harness?
No secrets declared in registry entry.
When was this checked, and what is the source?
These facts were checked on 2026-10-20. Registry name: ai.autonomous.harness/harness. Source: https://github.com/autonomous-ai/openharness.
Category hub: Developer Tools. Client indexes: Claude, Cursor, VS Code.
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