Observability Use when writing Rust code with `axllm` for agent tracing, usage accounting, action logs, runtime diagnostics, replay, and production debugging. rust skills skill-agent-observability packages/rust/skills/ax-rust-agent-observability/SKILL.md skill Observability

AxAgent Observability For Rust

Use when writing Rust code with axllm for agent tracing, usage accounting, action logs, runtime diagnostics, replay, and production debugging.

Install

Install only this skill for Rust:

Shell
npx skills add https://ax-llm.github.io/ax/rust/ --skill 'ax-rust-agent-observability'

Published skill file: ax-rust-agent-observability/SKILL.md.

Source

Skill Instructions

This skill helps an agent write Rust code with the generated Ax package axllm. Use the generated package API, examples, and manifests; do not import TypeScript-only APIs unless you are editing the TypeScript package.

When To Use

  • Inspect agent traces, runtime envelopes, usage, or action logs.
  • Attach callbacks for model/tool activity and runtime progress.
  • Debug agent loops through generated package state and examples.

Package Facts

  • Language: Rust.
  • Package: axllm.
  • Package API docs: API.md and axir-api.json.
  • Capability manifest: axir-capabilities.json.
  • Runnable examples: examples/.
  • Real network support: yes.
  • Scripted no-key transport support: yes.
  • Runtime profiles: javascript-quickjs.

Core Pattern

Rust
let helper = axllm::agent("question:string -> answer:string")?;
let out = helper.forward(&llm, inputs, None)?;

Relevant API Surface

  • Agents And RLM: agent, AxAgent
  • Runtime Profiles: ProcessCodeRuntime, RuntimeCapabilities, RuntimeEnvelope, javascript-quickjs

Guardrails

  • Start from package examples for exact native syntax before inventing a new call shape.
  • Use provider-api examples only when the user explicitly has provider credentials available.
  • Use no-key examples for deterministic local checks and provider request mapping.
  • Treat AxIR as the source of generated package truth: if package docs disagree with source code, update the compiler and regenerate packages.
  • Do not copy repo-maintainer skills from tools/*/skills/ into user packages.
Docs