compile-api

A compiler for an Autodesk Fusion 360 Python API reference database. The database is a searchable collection of the classes, functions, and other definitions available in Fusion 360’s Python interface.

In plain words
What is it for?
Use it to compile the database from Autodesk’s GitHub reference repository, a chosen repository version, or a local directory of API stub files.
Why use it?
It rebuilds or refreshes the local reference data when it is missing or outdated, so API lookups can use a current source.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/lestrrat-ai/claude-code-plugins/compile-api
Any agent
npx skills add lestrrat-ai/claude-code-plugins --skill compile-api
Clone the repo
git clone --depth 1 https://github.com/lestrrat-ai/claude-code-plugins

Made for: Claude Code, Codex.

Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 683 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00058 $0.00683
Opus 5 $0.00029 $0.00342
Sonnet 5 $0.00012 $0.00137
Haiku 4.5 $0.00006 $0.00068

Measured 2d ago against content hash 74f451f8f575, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

compile-api scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/compile_fusion_api.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/fusion/skills/compile-api/SKILL.md · 45 lines

What it actually says

Compile Fusion API Database

Invocation: Claude Code /fusion:compile-api; Codex $fusion:compile-api.

  1. Resolve scripts/compile_fusion_api.py from this active SKILL.md to an absolute path. NEVER use a plugin-root environment variable.

  2. Run:

    ["python3", "<absolute-compile_fusion_api.py>"]
    

    Needs network access to api.github.com (commit and file listing) and raw.githubusercontent.com (the stub files themselves), and to no other host: github.com is only the source string recorded in the database. The default output is the user cache (~/.cache/fusion-api-db/fusion-api.db), which query-api prefers over the database bundled with the plugin — a recompile takes effect immediately, no plugin reinstall.

  3. Options, only when the user asks for them:

    • --ref <git-ref> compiles a specific ref of the reference repo (default main).
    • --source <dir> parses a local directory of adsk/*.py stubs instead of downloading. It resolves no ref, so the two options are refused together (usage error, exit 2) rather than --ref being ignored; a user asking for both wants a download of that ref.
    • --output <path> writes elsewhere. Refreshing the plugin's bundled copy (authoring checkout of this plugin only) → --output <plugin>/skills/query-api/data/fusion-api.db, then commit the result.
  4. Report the script's final line on stdout (path, symbol count, member count) and the compiling <source>@<commit> line stderr opens with, as the source record. Every path emits that line: a download names the reference repo, the resolved commit, and the ref that was requested (compiling <repo>@<sha> (requested ref '<ref>')), a --source compile names the local directory and local in place of a commit. Report the requested ref as well as the commit — the resolved commit alone cannot be checked against the ref the user named. Relay every warning: line on stderr too: one kind reports how many statements used a construct the compiler does not index, and one kind reports a warning Python raised while parsing a named stub. Non-zero exit → relay stderr as-is and stop.

The script rebuilds the whole database from scratch; there is no incremental mode. It compiles into a staging file next to the output and replaces the output only after every stub has parsed and the result has been checked to be non-empty, so a compile that fails partway leaves the existing database in place. A compile that succeeds still discards the previous contents — anything hand-edited into that database is lost.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 45 lines · 58 tokens per session scan A 74f451f8f575

Subscribe to this mod's changes

compile-api is a skill published in the GitHub repository lestrrat-ai/claude-code-plugins (18 stars, last pushed 3d ago), licensed MIT. It adds 58 tokens to every session and 683 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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