version: "1.0.0" name: fugu description: Run a bounded Sakana Fugu repository task or explicit review through codex-fugu. Use when the user types /fugu, asks to use Fugu, or asks for a Fugu review. disable-model-invocation: true

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Fugu Planning or Review

This is the Elves-managed Claude Code alias for /fugu [--deep|--ultra|--max] [--max-wait SECONDS] [--preflight] [--include PATH] <planning-task> and /fugu [--deep|--cyber|--ultra|--max] [--max-wait SECONDS] [--preflight] review <scope>.

Load the installed elves skill's Provider shortcut protocols and references/provider-shortcuts.md. Resolve scripts/run_fugu.sh from the active Elves skill root, keep the target repository as the working directory, pass through the validated mode/profile/context, and run it.

Host Fugu routing (required when the user omits a profile flag). Natural language "use Fugu" or plain /fugu <task> uses bare fugu/high by default. Before launch, state one short Fugu route: … line. Explicit user flags always win. Profile locks model + effort.

1. Host-native first if rg/git/gh can finish in under a minute.
2. Task mode: planning (default) vs review <scope> when the user asked for a review or audit.
3. Profile: use plain fugu/high by default. Use --deep only when regular Fugu needs xhigh effort. The host may select --cyber only for explicit security review or threat-model intent after a successful Cyber call in the current session. Only a user-explicit --cyber request may establish that proof. Otherwise, use regular Fugu. The user must explicitly select --ultra or --max.
4. Write: Fugu is read-only. The runner rejects --write.
5. Context: the isolation snapshot is always on. Put goal, paths, done-when, and out-of-scope in the

task string. Add exact --include PATH only for non-gitignored files; if any include, run `--preflight` first and launch only when admitted. No separate "minimal snapshot" product.

1. Capture: redirect to a log file (never | tail / | head). Chat cancel does not stop the

provider; wait up to the wall or kill the process group. On timeout/crash, harvest any Fugu partial salvage markers before relaunch. Verify findings host-native and clean up leftover process groups (see references/fugu-calling-guide.md).

Full decision table, route templates, wait/poll contract, and field notes: references/provider-shortcuts.md (Host routing when the user says "use Fugu") and references/fugu-calling-guide.md.

Plain /fugu <task> is a read-only planning task whose answer follows the request; /fugu review <scope> is the opinionated read-only review. Exact includes must be admitted and copied; both .env.* and *.env names are excluded. Live writable-state limits tolerate benign disappearing temporary subtrees and fail closed on other audit errors. macOS read-only cleanup remains best-effort and never claims recursive containment. The Linux lane omits procfs and exposes only a synthetic /proc/self/exe link to the qualified real Codex binary.

The runner uses the official codex-fugu launcher with policy-admitted tracked and non-ignored untracked context, closed interactive input, and a hard wall-clock bound. It selects regular fugu/high when the host chooses plain, fugu/xhigh with --deep, fugu-cyber/xhigh with --cyber, fugu-ultra-v2.0/high with --ultra (then fugu-ultra, then fugu-ultra-v1.1), or fugu-ultra-v1.1/max with --max. Regular/deep sessions are ephemeral; Ultra uses exact-session staged synthesis, with its state confined to the disposable isolated lane, events carried by a bounded host-owned pipe, final output pinned to a no-follow descriptor, and a final descriptor-safe writable-state audit after each settled phase. Do not replace it with an improvised API request or remove its sandbox and timeout controls.

Read-only review snapshots omit oversized binary media instead of failing the whole review. Video, audio, presentation, archive, image, font, and 3D binaries above the per-file limit are left out and listed in the context manifest with path, byte size, and reason; the 16 MiB per-file limit is not raised. Source, prose instructions, executable agent configuration, and --include paths still fail closed and ask for a derived text, image, or transcript artifact.

Fugu is optional. On any non-zero exit the runner prints one directive line naming the reason. A quota, authentication, catalog, runner, timeout, or provider failure all mean the same thing. Select another available independent reviewer instead of stopping, record requested route, actual route, and fallback reason, and do not claim a review ran when it did not: python3 "$ELVES_SKILL_ROOT/scripts/cobbler_agents.py" review-route --host claude-code --requested fugu --unavailable fugu=<reason> --json.