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 adbertram/cli-tools --skill mercari-cligit clone --depth 1 https://github.com/adbertram/cli-toolsWrote 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/adbertram/cli-tools/mercari-cli)<a href="https://agentmods.dev/skills/adbertram/cli-tools/mercari-cli"><img src="https://agentmods.dev/badge/skills/adbertram/cli-tools/mercari-cli/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/adbertram/cli-tools/mercari-cli"><img src="https://agentmods.dev/badge/skills/adbertram/cli-tools/mercari-cli.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 | $0.00084 | $0.01141 |
| Opus 5.5 | $0.00034 | $0.00456 |
| Sonnet 5.5 | $0.00017 | $0.00228 |
| Haiku 4.5 | $0.00008 | $0.00114 |
Grade A, and why
mercari-cli 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 today.
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 — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.
<quick_start>
The mercari CLI follows this pattern:
mercari <command-group> <action> [arguments] [options]
| Task | Command |
|---|---|
| Authenticate | mercari auth login |
| Check auth | mercari auth status |
| Search others' listings | mercari listings search lego --table --limit 10 |
| Search sold, cheapest first | mercari listings search lego --status sold --sort price --table |
| Search newest listed first (default) | mercari listings search lego --sort newest --limit 20 --table |
| Filter search by condition/price | mercari listings search lego --condition good --min-price 20 --max-price 100 --table |
| List active listings | mercari listings list --status active |
| List sold listings (table) | mercari listings list --status complete --table |
| List inactive listings | mercari listings list --status inactive --limit 25 |
| Get one listing/item | mercari listings get m12345678901 |
| Get multiple listings/items | mercari listings get-many m12345678901 m10987654321 |
| </quick_start> |
<essential_principles>
MANDATORY: Verify the live command shape before executing ANY mercari command.
Consult usage.json when the repo or installed package ships it. If usage.json is absent, use mercari --help, the relevant subcommand --help, and README.md instead. Never guess at command syntax.
<reference_index>
usage.json -- Complete command tree with arguments, options, defaults, and usage instructions when present.
mercari --help and subcommand --help -- Live installed command tree and option list.
README.md -- Supplemental examples and workflow notes.
</reference_index>
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- today First seen · 67 lines · 84 tokens per session scan A 173a189e78ca
mercari-cli is a skill published in the GitHub repository adbertram/cli-tools (6 stars, last pushed today), licensed MIT. It adds 84 tokens to every session and 1,141 once invoked, about $0.0003 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 2026-11-07.
mercari-cli compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| mercari-cliadbertram/cli-tools | Skill | 6 | today | MIT | A | 84 | Claude Code, Codex |
| opencli-autofixjackwener/OpenCLI | Skill | 31k | yesterday | Apache-2.0 | A | 61 | Claude Code |
| surfnicobailon/surf-cli | Skill | 684 | yesterday | MIT | A | 53 | Claude Code, Codex |
| rdc-cliBANANASJIM/rdc-cli | Skill | 193 | 14d ago | MIT | A | 82 | Claude Code, Codex |
| pixiv-cli-ciFlanChanXwO/pixiv-cli | Skill | 132 | yesterday | MIT | A | 61 | Codex |
| acrawl-mcpMingye-Lu/AgenticCrawler | Skill | 15 | yesterday | MIT | A | 200 | Claude Code, Codex |
| debug-hubrexleimo/aios | Skill | 62 | yesterday | MIT | B | 66 | Claude Code, Codex |