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 iamvonpasion/hashb --skill retrogit clone --depth 1 https://github.com/iamvonpasion/hashbWrote 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/iamvonpasion/hashb/retro)<a href="https://agentmods.dev/skills/iamvonpasion/hashb/retro"><img src="https://agentmods.dev/badge/skills/iamvonpasion/hashb/retro.svg" alt="Measured on agentmods" 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 | $0.00017 | $0.02728 |
| Opus 5 | $0.00009 | $0.01364 |
| Sonnet 5 | $0.00003 | $0.00546 |
| Haiku 4.5 | $0.00002 | $0.00273 |
Grade A, and why
retro 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 8d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 8d ago First seen · 344 lines · 17 tokens per session scan A 591d76425cac
retro is a skill published in the GitHub repository iamvonpasion/hashb (2 stars, last pushed 3mo ago), with no licence file. It adds 17 tokens to every session and 2,728 once invoked, about $0.0001 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.
Other skills, from other repositories
rubber-ducky
Use when you've planned a non-trivial change and are about to implement it, finished a complex or multi-file piece of work, just wrote tests, or are stuck on repeated failures — and any time the user says "rubber duck this", "rubber ducky", "get a second opinion", "sanity-check my plan", "poke holes in this", "what am…
code-hygiene
Codebase health analysis: dead code, test quality, duplicates, complexity, security, architecture mapping. Tool-first, structured storage, forge integration.
x-cr
A software-correctness investigation skill for finding why code behaves differently from what was expected. It uses evidence from code paths, specifications, tests, logs, and changes to assess possible causes.
fe-spec
Converts requirements for a new frontend feature into a structured spec. Use when: before starting a new feature, when feature.md needs to be written, or when converting a planning doc into a dev spec. Do NOT load for: bug fixes, refactoring, simple style changes.
refactor-safely
Refactors working or legacy code without changing observable behavior, using characterization tests when needed. Use when code is messy, nested, duplicated, or uncovered.
lsp-validation
Use Language Server Protocol tools for code validation, navigation, and refactoring. Essential for maintaining code quality.