One CLI for every app your agent needs.
No more installing a new MCP server or CLI for each app your agent uses. Postagent connects your AI agent to any API — Notion, Linear, GitHub, Slack, and more.
- 🔌 No per-site setup — one
npm install -g postagentcovers every supported API - 🔍 Discover by intent —
postagent search "create a doc on Notion"instead of reading docs - 🔐 Credentials stay local — API keys are injected at send time, never leaked into the LLM context
Install
Quickstart
Postagent is meant to be driven by an agent, not by you. After installing, just tell your agent it has postagent available, then send it a task — for example:
"Use CLI postagent to list my documents on notion"
The agent will discover, read, auth, and call the API on its own:
send mirrors curl, so agents already know how to drive it. The $POSTAGENT.NOTION.API_KEY placeholder is resolved from local storage at send time — your credentials never enter the model context. Add --dry-run to any send to let the agent preview the resolved request (with sensitive headers redacted) before firing.
Configuration
You can try and test Postagent without setting an API key. However, the no API key mode is rate limited to 10 requests per minute.
If you need more requests, you can get a free API key from Actionbook and set it using the following command:
postagent config set apiKey ak_xxxxxxxxxxxxOr via environment variables:
export POSTAGENT_API_KEY=ak_xxxxxxxxxxxxCommands
postagent search <query> # Search for related actions by natural language postagent auth <site> # Complete an auth flow for a site postagent manual <site> [group] [action] # Get detailed manual for an action postagent send [options] # Send a request to a site, the options is same as curl
Supported sites
Visit https://api.postagent.dev/supported-sites.md to get the full list of supported sites. We are continually expanding it.
Stay tuned
We move fast. Star Postagent on Github to support and get latest information.
Development
pnpm install pnpm dev:watch
License
Apache-2.0