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 ofershap/mcp-server-npm --skill npm-searchgit clone --depth 1 https://github.com/ofershap/mcp-server-npmWrote 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/ofershap/mcp-server-npm/npm-search)<a href="https://agentmods.dev/skills/ofershap/mcp-server-npm/npm-search"><img src="https://agentmods.dev/badge/skills/ofershap/mcp-server-npm/npm-search/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/ofershap/mcp-server-npm/npm-search"><img src="https://agentmods.dev/badge/skills/ofershap/mcp-server-npm/npm-search.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 | $0.00025 | $0.00303 |
| Opus 5.5 | $0.00010 | $0.00121 |
| Sonnet 5.5 | $0.00005 | $0.00061 |
| Haiku 4.5 | $0.00003 | $0.00030 |
Grade A, and why
npm-search 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 1mo 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.
What it actually says
npm Package Search via MCP
Use this skill when you need to search npm, compare packages, check download stats, or inspect dependencies. No API keys needed.
Available Tools
| Tool | What it does |
|---|---|
npm_search |
Search npm packages by keyword |
npm_info |
Get detailed package info (version, license, deps, maintainers) |
npm_downloads |
Get download statistics (daily, weekly, monthly, yearly) |
npm_versions |
List recent versions of a package |
npm_compare |
Compare two packages side by side |
npm_deps |
List all dependencies of a package |
Workflow
npm_searchto find packages by keywordnpm_compareto evaluate two alternatives side by sidenpm_infofor deep dive on a specific packagenpm_downloadsto gauge popularity and adoption trends
Key Patterns
npm_compareis the most useful tool for "which library should I use?" questionsnpm_downloadsreturns daily/weekly/monthly/yearly — use for trend analysisnpm_depshelps evaluate dependency footprint before adding a package
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.
- 1mo ago First seen · 33 lines · 25 tokens per session scan A 0bba1c10ddc4
npm-search is a skill published in the GitHub repository ofershap/mcp-server-npm (0 stars, last pushed 7mo ago), licensed MIT. It adds 25 tokens to every session and 303 once invoked, about $0.0001 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 2026-08-31.
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