I built a tool that turns any API into a CLI for agents

Details

External ID

47208636

Source

HN

Company

—

Product

I built a tool that turns any API into a CLI for agents

Website domain

instantcli.com

Launched

March 1, 2026

Cohort

—

Upvotes

6

Upvotes percentile

0.2853628536285363

Tags

—

Fetched at

Sept. 7, 2026, 9:26 p.m.

Updated at

Sept. 7, 2026, 9:26 p.m.

Description

TLDR; I built a tool that turns any API into a CLI designed for ai agents---Got tired of dealing with bloated context windows from MCP servers and skills that stuff entire API docs into the agent's contextCLIs fix this, agents run a single command to self-discover everything an API has to offerSo, built a tool to generate them for any api. All CLIs are written in Go, fast and lightweight, no dependenciesHelp text (via the --help flag) is the killer feature: all context for each command/endpoint/parameter is extracted directly from the user-facing API docs and enhanced with llms. It's bundled directly with the CLI and agents fetch only what they need at runtime. No context overhead, no fumbled API calls.Most APIs don't have a CLI yet. Can have Opus one-shot simple ones, but building a great one with cross-platform binaries, install scripts, detailed help text, and auto-updates takes time and is frustrating to repeat for every API. Maintaining it the API grows is a headacheGive InstantCLI any API docs url and it generates a production-ready CLI in minutes. It includes binaries + install scripts for all platforms, auto-updates as your API changes, docs-enhanced help text designed for agents, and hosting

• Source listing
• Website