Borrowing it
Nothing to install: this file belongs to hansohn/marketplace-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/hansohn/marketplace-skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/hansohn/marketplace-skillsWrote 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/instructions/hansohn/marketplace-skills/claude-md)<a href="https://agentmods.dev/instructions/hansohn/marketplace-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/hansohn/marketplace-skills/claude-md/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/instructions/hansohn/marketplace-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/hansohn/marketplace-skills/claude-md.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 | $0.01499 | $0.01499 |
| Opus 5 | $0.00749 | $0.00749 |
| Sonnet 5 | $0.00300 | $0.00300 |
| Haiku 4.5 | $0.00150 | $0.00150 |
Grade A, and why
marketplace-skills CLAUDE.md 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 — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
marketplace
A Claude Code plugin for preparing secondhand items for resale. It generates a complete listing file — pricing analysis, listing copy per enabled platform, and a recommended photo order — from an item name or a CSV row, and can optionally create an eBay draft.
Scope: this file configures agents working on the plugin itself. The reusable assets are the skills in
skills/. The plugin is namedmarketplace(in.claude-plugin/plugin.json), so its skills are invoked as/marketplace:<skill>. The on-disk folder and git repo aremarketplace-skills— folder/repo names are intentionally independent of the plugin name.
Structure
.claude-plugin/plugin.json → plugin manifest (name, version, description)
skills/<name>/SKILL.md → one skill per directory (nothing else lives here)
agents/<name>.md → least-privilege subagent personas (registered in plugin.json)
platforms/<name>.md → one file per marketplace format (drives generation)
templates/listing.md → output file skeleton with {PLACEHOLDER} slots
references/placeholders.md → shared placeholder-source table (progressive disclosure)
references/locked-fields.md → listing Step 3a deterministic-field rules (read at 3a)
references/pricing-method.md → comps Step 4 deterministic pricing method (backs scripts/price.js)
docs/adr/ → architecture decision records (why non-obvious calls were made)
scripts/ → validation + eval tooling (zero-dependency Node)
evals/cases/<skill>.json → per-skill routing datasets (run-trigger-evals.js)
evals/workspace/ → skill-creator eval run outputs (gitignored)
.claude/settings.json → personal dev config (untracked; see settings.example.json)
Skills
- listing — orchestrator. Gathers item details, delegates to
compsandphotos, renders one copy block per enabled platform, writes{ItemPrefix}-Listing.md, and optionally chains intoebay-draft. - comps — pricing research only (live eBay sold data via Playwright, optional FB).
- photos — reviews a photo folder, returns a ranked order + condition notes.
- ebay-draft — pushes a prepared listing to eBay as a draft via the eBay MCP.
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 · 104 lines · 1,499 tokens per session scan A 4de247d1fb60
marketplace-skills CLAUDE.md is an instructions file published in the GitHub repository hansohn/marketplace-skills (1 stars, last pushed 1mo ago), licensed MIT. It adds 1,499 tokens to every session, about $0.0075 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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