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.
npx skills add bgill55/daedalus --skill grade-and-fix-daedalusgit clone --depth 1 https://github.com/bgill55/daedalusWrote 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.
[](https://agentmods.dev/skills/bgill55/daedalus/grade-and-fix-daedalus)<a href="https://agentmods.dev/skills/bgill55/daedalus/grade-and-fix-daedalus"><img src="https://agentmods.dev/badge/skills/bgill55/daedalus/grade-and-fix-daedalus/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.
<a href="https://agentmods.dev/skills/bgill55/daedalus/grade-and-fix-daedalus"><img src="https://agentmods.dev/badge/skills/bgill55/daedalus/grade-and-fix-daedalus.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00130 | $0.03808 |
| Opus 5 | $0.00065 | $0.01904 |
| Sonnet 5 | $0.00026 | $0.00762 |
| Haiku 4.5 | $0.00013 | $0.00381 |
Grade A, and why
grade-and-fix-daedalus 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 236 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Grade a Daedalus run and ship the core fix (stacked PR)
This skill covers how to grade a Daedalus run (or read a pasted agent transcript),
root-cause the failure, fix it in src/..., and ship it as a stacked PR. The
prompt-vault sandbox stays READ-ONLY except for one user-explicit exception.
Hard rules (standing)
- Grade, don't fix the sandbox.
prompt-vault(+social_media_manager) are TEST-ONLY. You READ/GRADE them. You do NOT edit them to "help" Daedalus — that defeats the purpose. The ONE exception: a user-explicit "just this once, fix this error in the test project" — otherwise the sandbox is passive. - Fixes go to Daedalus CORE (
src/...), never the sandbox. A graded run that exposes a guardrail gap is a core bug; ship it as a PR. - Run Daedalus from SOURCE (
npx tsx src/index.ts) — the published bin is stale. Banner version lagging package.json is cosmetic. search_filesFAILS onD:\paths (MSYS IO error). Useterminalwithgrep/ls/gitfor anything under D:.- Verify with real tool calls, not theory. Reproduce the bug by importing the actual function and calling it (tsx repro), then prove the fix the same way. Do NOT assert "the guard is wrong" without a repro.
- Skills are auto-discovered from this
src/skills/dir (seesrc/skills/index.ts): any subdir with aSKILL.mdwhose frontmatter has atriggerfield is matched keyword-style against the user's request and injected into the prompt. Keep thetriggerfield populated with pipe-separated phrases.
Recurring bug archetypes (with exact fixes that shipped)
These are the failure modes seen grading real Daedalus runs. Each maps to a specific root cause and a specific fix location.
1. Patch fails on a Unicode punctuation mismatch (en-dash vs hyphen)
- Symptom: agent's
old_stringuses a regular hyphen-but the file has an en-dash–(U+2013) in a comment; Daedalus reports "Old string not found" and the edit never lands. Looks like "every patch fails" but it's a 1-char invisible mismatch. - Root cause:
patchFile(src/tools/builtin/files.ts) matchesold_stringexactly, and the fuzzy fallbackfuzzyWhitespacePatchonly normalizes whitespace, not Unicode punctuation. en-dash/hyphen/smart-quotes/NBSP are invisible to a human but distinct bytes. - Fix (v3.20.7): added
normalizeUnicode()inpatch-utils.tsmapping en/em-dash -> hyphen, smart quotes -> straight, NBSP -> space (all 1:1 so original bytes stay intact), folded intonormalizeWhitespace(); the exactindexOfpath infiles.tsalso tries a unicode-normalized match. Mappings must be 1:1 (no length-changing entries like ellipsis…->..., or the index-slice math breaks).
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.
- 10d ago First seen · 236 lines · 130 tokens per session scan A 10ca0506f135
grade-and-fix-daedalus is a skill published in the GitHub repository bgill55/daedalus (4 stars, last pushed 2d ago), licensed MIT. It adds 130 tokens to every session and 3,808 once invoked, about $0.0006 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 2026-08-31.
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