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 agentmods add skills/robinebers/openusage/fix-codesign-errornpx skills add robinebers/openusage --skill fix-codesign-errorgit clone --depth 1 https://github.com/robinebers/openusageWhat 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 | $0.00042 | $0.00249 |
| Opus 5 | $0.00021 | $0.00125 |
| Sonnet 5 | $0.00008 | $0.00050 |
| Haiku 4.5 | $0.00004 | $0.00025 |
Grade A, and why
fix-codesign-error 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 yesterday.
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.
What it actually says
Fix Codesign Error
Inspect a macOS signing or entitlement failure and explain the minimum fix path.
Arguments
app: path to.appbundle or binary (optional)identity: signing identity hint (optional)mode:inspectorrepair-plan(optional, default:inspect)
Workflow
- Inspect the app bundle, executable, signing info, and entitlements.
- Determine whether the problem is identity, provisioning, hardened runtime, sandboxing, or trust policy.
- Summarize the exact failure class in plain language.
- Provide the minimal repair sequence or validation command.
Guardrails
- Never invent entitlements; read them from the binary or source files.
- Distinguish local development signing problems from distribution or notarization failures.
- Prefer verifiable commands like
codesign -d,spctl, andplutilover guesswork.
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.
- yesterday First seen · 29 lines · 42 tokens per session scan A a5673208279f
fix-codesign-error is a skill published in the GitHub repository robinebers/openusage (3,954 stars, last pushed 3d ago), licensed MIT. It adds 42 tokens to every session and 249 once invoked, about $0.0002 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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