Agent Postbox runs on your own machine — the client starts it, so there is no endpoint to ping. 365 installs a week from npm. Last commit 26 Oct 2026.
Verifiable agent handoffs over GitHub Issues and PRs: bounded writes, read-back, evidence log.
Nothing serious here today
Today is the operative word: we check Agent Postbox every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
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 agent-postbox -e 'AGENT_POSTBOX_TOKEN=<AGENT_POSTBOX_TOKEN>' -- npx -y agent-postbox{
"mcpServers": {
"agent-postbox": {
"command": "npx",
"args": [
"-y",
"agent-postbox"
],
"env": {
"AGENT_POSTBOX_TOKEN": "<AGENT_POSTBOX_TOKEN>"
}
}
}
}[mcp_servers.agent-postbox]
command = "npx"
args = ["-y", "agent-postbox"]
env = { AGENT_POSTBOX_TOKEN = "<AGENT_POSTBOX_TOKEN>" }{
"mcpServers": {
"agent-postbox": {
"command": "npx",
"args": [
"-y",
"agent-postbox"
],
"env": {
"AGENT_POSTBOX_TOKEN": "<AGENT_POSTBOX_TOKEN>"
}
}
}
}{
"servers": {
"agent-postbox": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"agent-postbox"
],
"env": {
"AGENT_POSTBOX_TOKEN": "<AGENT_POSTBOX_TOKEN>"
}
}
}
}Put your own value in place of
<AGENT_POSTBOX_TOKEN> (GitHub token for this agent (fine-grained, one repo)).
The author’s registry entry marks it as required.
Alternatives to Agent Postbox
same job, measured the same wayMCP server for the GitHub REST API: issues, PRs, repos; read always on, write env-gated.
Hand tasks, bugs and finished work to AI coding agents, and get back a write-up with evidence.
Track GitHub issue and Stripe test-payment outcomes; recover uncertain supported actions.
Safety boundary for agent written GitHub PR reviews: pending and invisible, submitting is opt-in
Read-only GitHub repos, issues, PRs and commits, with tool descriptions tuned on a benchmark.
GitHub MCP Server - List PRs, issues, repo info, and search code
Phone numbers for AI agents: order a private number, read the SMS verification code, hand it back.
Screenshots, PDFs, OG images, monitoring and evidence for AI agents. Glint Render by Moyu.
Agent Postbox — questions
Answers built from our own checks of this server.