sailfin: Skill for Codex

.codex/skills/sailfin-debug-compile/SKILL.md

sailfin-debug-compile is a skill for Codex from SailfinIO/sailfin. It costs 30 tokens per session (603 once invoked), scanned A, original, GPL-2.0.

A diagnostic tool for Sailfin compilation, self-hosting, and LLVM lowering failures. LLVM is the compiler technology Sailfin uses for a later stage of turning code into executable output.

In plain words
What is it for?
Use it when Sailfin cannot compile, cannot build itself, or fails while converting code through LLVM.
Why use it?
It helps locate failures in the compiler pipeline without hiding them with special build-driver workarounds.

Skill for Codex

Written for Codex: installed under .codex/.

This is SailfinIO/sailfin's own configuration. It tells Codex how to work on sailfin itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything sailfin configures →

Reuse

Borrowing it

Nothing to install: this file belongs to SailfinIO/sailfin. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/SailfinIO/sailfin/main/.codex/skills/sailfin-debug-compile/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/SailfinIO/sailfin

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for sailfin-debug-compile

README.md
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Your own site
<a href="https://agentmods.dev/skills/sailfinio/sailfin/sailfin-debug-compile"><img src="https://agentmods.dev/badge/skills/sailfinio/sailfin/sailfin-debug-compile/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for sailfin-debug-compile

Your own site · 80×15
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Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 603 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 5.1 $0.00030 $0.00603
Opus 5.5 $0.00012 $0.00241
Sonnet 5.5 $0.00006 $0.00121
Haiku 4.5 $0.00003 $0.00060

Measured 1mo ago against content hash 64f7277ebed1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sailfin-debug-compile 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 1mo ago.

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.

.codex/skills/sailfin-debug-compile/SKILL.md · 48 lines

The source is not reproduced here

Licensed GPL-2.0

The repository is licensed GPL-2.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 1mo ago First seen · 48 lines · 30 tokens per session scan A 64f7277ebed1

Subscribe to this mod's changes

sailfin-debug-compile is a skill published in the GitHub repository SailfinIO/sailfin (8 stars, last pushed 2d ago), licensed GPL-2.0. It adds 30 tokens to every session and 603 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-10-02.

Related

sailfin-debug-compile compared with skills from other repositories

sailfin-debug-compile next to 6 skills from other repositories
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