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Bun FFI: calling C libraries from JavaScript v1.0.0

Use this resource to call native C or C++ libraries from a Bun project

New

  • 360 downloads
  • 227 likes
  • 100 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install bun-native-library-ffi

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent loads a library with dlopen, declares its functions and their types, then handles strings, pointers, structs and callbacks. It accounts for the platform-specific library paths. You get code that calls your native library from TypeScript.

Mostly picked by

Updated November 2, 2026

Card for the “Bun FFI: calling C libraries from JavaScript” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

Similar resources

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What you get

  • SKILL.md: loading, FFI types, function definitions and SQLite example

Good fit for

  • You want to call an existing C library from a Bun application
  • You need a native function without going through a service

Not for

    Tags

    • bun
    • ffi
    • native libraries
    • c

    About

    You say

    “Load my C maths library with bun:ffi and expose its hashing function to my Bun server.”

    Card for the “Bun FFI: calling C libraries from JavaScript” skill

    Skill published by secondsky under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to call native C or C++ libraries from a Bun project
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md7.5 KB

    Origin and licence

    Listed unmodified

    Author
    secondsky
    Source
    github.com/secondsky/claude-skills/tree/88378361314f558fb719aec0af9fd898ab36f0b2/plugins/bun/skills/bun-ffi
    Licence
    MIT

    Notice

    « bun-ffi » (secondsky, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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