React Router is a routing system for React applications that maps URLs to the interface shown on screen. Developers use it either as a small library within their own application structure or as part of a full React framework.
Borrowing it
Nothing to install: this file belongs to remix-run/react-router. 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/remix-run/react-router/main/.agents/skills/implement-rfc/SKILL.mdgit clone --depth 1 https://github.com/remix-run/react-routerWrote 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/remix-run/react-router/implement-rfc)<a href="https://agentmods.dev/skills/remix-run/react-router/implement-rfc"><img src="https://agentmods.dev/badge/skills/remix-run/react-router/implement-rfc/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/remix-run/react-router/implement-rfc"><img src="https://agentmods.dev/badge/skills/remix-run/react-router/implement-rfc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Snyk warn
- NVIDIA SkillSpector pass
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 | $0.00049 | $0.02036 |
| Opus 5.5 | $0.00020 | $0.00814 |
| Sonnet 5.5 | $0.00010 | $0.00407 |
| Haiku 4.5 | $0.00005 | $0.00204 |
Grade A, and why
implement-rfc 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 — 240 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Implement React Router RFC
Implement the RFC from the following GitHub discussion: $ARGUMENTS
Branching
RFC implementations should start from a clean working tree. If there are uncommitted changes, stop and ask me to resolve them before continuing.
- If you are already on a named branch that is at the same HEAD as
main, use that branch. - Otherwise, create a branch from
mainusing the format{author}/rfc-{semantic-name}:git branch {author}/rfc-{semantic-name} main git checkout {author}/rfc-{semantic-name}
Workflow
1. Fetch and Understand the RFC
Use WebFetch to read the discussion URL. If a GitHub discussion number is given instead of a URL, construct:
https://github.com/remix-run/react-router/discussions/<number>
Extract:
-
Problem being solved: what pain point does this RFC address?
-
Proposed API: exact function signatures, hook names, types, option shapes
-
Affected modes: Declarative / Data / Framework / RSC Data / RSC Framework
-
Breaking changes: does this change or remove existing public API?
-
Open questions: anything explicitly marked as unresolved, "TBD", or asked as a question in the proposal
-
Status: are there linked tracking issues? Look for links to other github issues and read them to see if there is additional context.
gh issue view <number> --repo remix-run/react-router
2. Evaluate Community Feedback
Fetch all comments from the discussion:
Use WebFetch on https://github.com/remix-run/react-router/discussions/<number> and scroll through the full thread. Look for:
- Concerns or objections raised by community members or maintainers
- Alternative proposals or API shape suggestions
- Edge cases raised that the proposal does not address
- Positive signals — repeated praise for a specific approach signals it's the right direction
- Maintainer responses — Ryan Florence, Michael Jackson, or other core team members clarifying intent
Summarize the community sentiment into:
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 · 240 lines · 49 tokens per session scan A 31de2d9d89e3
implement-rfc is a skill published in the GitHub repository remix-run/react-router (56,622 stars, last pushed today), licensed MIT. It adds 49 tokens to every session and 2,036 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 2026-08-30.
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