using-react-native-docs-mcp

Instructions for using a search tool that retrieves current official React Native documentation. React Native is a framework for building mobile apps with JavaScript and native platform components.

In plain words
What is it for?
Use it to search the official docs and retrieve focused guidance before writing code involving React Native APIs.
Why use it?
It reduces mistakes caused by relying on remembered or outdated details about React Native APIs.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/sannnao/react-docs-mcp/using-react-native-docs-mcp
Any agent
npx skills add Sannnao/react-docs-mcp --skill using-react-native-docs-mcp
Clone the repo
git clone --depth 1 https://github.com/Sannnao/react-docs-mcp

Made for: Claude Code, Codex.

Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 426 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00038 $0.00426
Opus 5 $0.00019 $0.00213
Sonnet 5 $0.00008 $0.00085
Haiku 4.5 $0.00004 $0.00043

Measured 2d ago against content hash b322b9cff6a8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

using-react-native-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 2d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

packages/react-native-docs-mcp/.claude/skills/using-react-native-docs-mcp/SKILL.md · 18 lines

What it actually says

Using react-native-docs-mcp

When this MCP server is connected, prefer it over recalling React Native APIs from memory — training data goes stale, this tool indexes the live official docs.

Workflow

  1. Search first. Call search_react_native_docs with a natural-language query before writing React Native code that touches an API you're not 100% certain about. Results include a relevance-ranked snippet and a url.
  2. Drill in only when needed. If the search snippet isn't enough, call get_doc with the path from a search result. It returns a ~1500 char summary plus a structure outline by default — enough for most questions.
  3. Use full: true sparingly. Pass full: true to get_doc only when the summary likely cuts off something you need — New Architecture migration guides, native-module walkthroughs, or anything with many sequential steps. Don't default to full for every call; it costs more context for no benefit on short reference pages.
  4. Search unfiltered by default. Most React Native docs pages live flat with no section; only the-new-architecture, legacy, and releases are real sections. Use the section filter only when specifically targeting one of those areas.
  5. Pin docs to the user's actual version when it matters. If the project's installed react-native version differs from latest and the question involves an API that may have changed across versions, note that the server can be started with --docs-version=X.YY to index that release's frozen docs snapshot — mention this to the user rather than silently assuming latest-version behavior applies to their older app.
  6. Refresh if docs seem stale. Call update_docs to pull the latest commit before concluding an API doesn't exist.
Changes

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.

  1. 2d ago First seen · 18 lines · 38 tokens per session scan A b322b9cff6a8

Subscribe to this mod's changes

using-react-native-docs-mcp is a skill published in the GitHub repository Sannnao/react-docs-mcp (8 stars, last pushed 1mo ago), licensed MIT. It adds 38 tokens to every session and 426 once invoked, about $0.0002 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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