Borrowing it
Nothing to install: this file belongs to Sannnao/react-docs-mcp. 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/Sannnao/react-docs-mcp/master/.claude/skills/using-docs-mcp/SKILL.mdgit clone --depth 1 https://github.com/Sannnao/react-docs-mcpWrote 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/sannnao/react-docs-mcp/using-docs-mcp)<a href="https://agentmods.dev/skills/sannnao/react-docs-mcp/using-docs-mcp"><img src="https://agentmods.dev/badge/skills/sannnao/react-docs-mcp/using-docs-mcp/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/sannnao/react-docs-mcp/using-docs-mcp"><img src="https://agentmods.dev/badge/skills/sannnao/react-docs-mcp/using-docs-mcp.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 | $0.00044 | $0.00509 |
| Opus 5.5 | $0.00018 | $0.00204 |
| Sonnet 5.5 | $0.00009 | $0.00102 |
| Haiku 4.5 | $0.00004 | $0.00051 |
Grade A, and why
using-docs-mcp 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.
How it starts
The opening of the file, as written. The whole thing — 18 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Using react-docs-mcp / react-native-docs-mcp
When these MCP servers are connected, prefer them over recalling React or React Native APIs from memory — training data goes stale, these tools index the live docs repo.
Workflow
- Search first. Call
search_react_docs(orsearch_react_native_docs) with a natural-language query before writing any React/React Native code that touches an API you're not 100% certain about. Results include a relevance-ranked snippet and aurl. - Drill in only when needed. If the search snippet isn't enough, call
get_docwith thepathfrom a search result. It returns a ~1500 char summary plus a structure outline by default — enough for most questions. - Use
full: truesparingly. Passfull: truetoget_doconly when the summary likely cuts off something you need — long migration/upgrade guides, multi-step setup pages, or anything with many sequential steps where truncation would hide later steps. Don't default tofullfor every call; it costs more context for no benefit on short reference pages. - Filter by section when you know the area.
sectionnarrows results (e.g.learn/reference/blog/communityfor React;the-new-architecture/legacy/releasesfor React Native). For React Native, most pages have no section — search unfiltered unless you're specifically after one of those three areas. - Pin React Native docs to the user's actual version when it matters. If the project's installed
react-nativeversion is known and differs from latest, and the question is about an API that may have changed across versions, note thatreact-native-docs-mcpcan be started with--docs-version=X.YYto index that release's frozen docs snapshot instead of always-current — mention this to the user rather than silently assuming latest-version behavior applies to their older app. - Refresh if docs seem stale or contradict recent framework changes. Call
update_docsto pull the latest commit before concluding an API doesn't exist.
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 · 18 lines · 44 tokens per session scan A 7896ebb1f79e
using-docs-mcp is a skill published in the GitHub repository Sannnao/react-docs-mcp (8 stars, last pushed 3mo ago), licensed MIT. It adds 44 tokens to every session and 509 once invoked, about $0.0002 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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