// TUTORIAL Mar 21, 2026 18 min read ● plugins / rust / wasm

Writing your first WASM detector plugin in 200 lines of Rust.

A walk-through: from `cargo new` to a signed plugin running against your repos. Includes the trickiest bits — extism host functions, AST cursor management, and emitting confidence-scored edges.

SL
Sara Lin
Developer relations

Tutorial coming soon. Subscribe below to get notified when it lands.

Try this on your repos.

Beta is open. Five-minute setup. Source never leaves your network.

SL

Sara Lin

Developer relations

Sara writes docs and tutorials at ArchMellon. Background in developer relations and embedded Rust.

Keep reading

← Back to all posts
api-gw auth order pay inv ledger notify audit
// ENGINEERING Apr 22 · 12 min

Tracing AMQP across 47 repositories without touching production.

How we built cross-repo edge resolution with sandboxed WASM plugins, why we abandoned static type-flow analysis halfway through, and the trick that finally made routing-key resolution deterministic.

EM
Elena Markov
Indexer team · Lead Engineer
// THINKING Apr 14 · 9 min

The third path: why YAML catalogues rot and runtime tracing misses the point.

Two well-trodden roads. Both fail at scale, for opposite reasons. The way out isn't picking one — it's noticing the architecture is already in your code.

AT
Anna Torres
Co-founder
.go tree- sitter
// ENGINEERING Apr 8 · 14 min

Why we ripped out our recursive AST walker (twice).

Stack overflows in production are humbling. Here's the iterative tree-sitter walker we landed on, what we got wrong, and why the fix was less code, not more.

DK
Dmitri Kovacs
Indexer team