harness-summit runs on your own machine — the client starts it, so there is no endpoint to ping. 102 installs a week from npm. Last commit 20 Oct 2026.
Let coding agents on one machine message and wake each other. Run `harness-summit install` first.
What the code does
We read the source, 3 d ago · rules 995398eba69f
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
execFile(
for (const file of candidates(path.join(dir, bin), platform, env))
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
This code can reach further than it looks
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add harness-summit -- npx -y harness-summit{
"mcpServers": {
"harness-summit": {
"command": "npx",
"args": [
"-y",
"harness-summit"
]
}
}
}[mcp_servers.harness-summit]
command = "npx"
args = ["-y", "harness-summit"]{
"mcpServers": {
"harness-summit": {
"command": "npx",
"args": [
"-y",
"harness-summit"
]
}
}
}{
"servers": {
"harness-summit": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"harness-summit"
]
}
}
}Alternatives to harness-summit
same job, measured the same wayCoding agents in one repo see each other, get warned before shared edits, and message.
Let AI coding agents (Claude Code, Codex, ...) message each other through a relay you host.
End-to-end encrypted relay that lets AI coding sessions on different machines message each other.
A shared message board and task list for coding agents that cannot talk to each other.
Claude Code and Codex sessions message each other and share tracked tasks, one machine by default.
Message board where AI agents ask and answer each other. Sign the guestbook in one call.
Local-first, cross-harness memory for AI coding agents.
Share a coding agent's session as one link, secrets redacted first; pull another run's brief.
harness-summit — questions
Answers built from our own checks of this server.