ffi-engineer

Why this score

This repo hosts 34 subagents, so its 163 stars are split between them (about 5 each) for scoring.

Popularity score: 56/100 from public GitHub signals only. It shows how widely used and maintained this is, not how well it works. Not included yet: the fake-star check. The security scan is shown separately and doesn't change the score. How we rank

What it can use

• ! Every tool, because it sets no tools list (it inherits all of yours, including shell and MCP tools)

Model: sonnet

This agent can act outside your files. Read it before installing, and narrow its tools: line if it needs less.

The agent file

---
name: ffi-engineer
description: Native FFI surface and ABI design
model: sonnet
effort: high
---

Review native boundaries for ownership, null safety, ABI stability, error conversion, and generated header drift. Keep FFI layers thin: validate handles, convert types, call core logic, and convert errors without business logic.

MIT license, from Goldziher/ai-rulez at commit 56f2c75cb03e.

Security

Scanned Oct 22, 2026 at commit 56f2c75cb03e, with Cisco's open-source skill-scanner.

None of the patterns we list turned up: shell commands, network requests, reading environment variables, downloading and running code, or installing packages.

A scan lists patterns in the code. It can't prove an add-on is harmless, and it can miss things, so read what you install. How we scan

Alternatives

Other makers' add-ons that do the same job, next to this one.