postal: An open-source, terminal-based AI coding agent that reads your code, calls tools, and helps you build

by andrefetch · MCP Server · ★ 191

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install postal

pip install postalcli

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 65/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

agentic-aiaiclicoding-agentdeveloper-toolsllmmcpopen-sourceopenrouterpython

Quick Facts

Stars191
Forks33
LanguagePython
CategoryMCP Server
LicenseGPL-3.0
Quality Score65/100
Last Updated2026-11-06
Created2026-06-26
Platformscli, mcp, python
Est. Tokens~16k

About postal

Postal An open-source AI coding agent that lives in your terminal. Plans, edits, runs, and reviews code with any model on OpenRouter. Postal connects to LLMs through OpenRouter, reads and edits your code with a built-in tool set, runs shell commands, delegates to specialized sub-agents, and streams everything through a full-screen TUI.

Compatible Skills

These tools work well together with postal for enhanced workflows:

  • AgentForge — semantic(0.25)+complementary+same_lang+similar_pop+shared_platform (59%)
  • cafleet — semantic(0.19)+complementary+same_lang+similar_pop+shared_platform (57%)

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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