A tool for finding and retrieving IETF RFCs, the published documents that define many Internet protocols and standards. It covers topics such as HTTP, DNS, TLS, TCP/IP, BGP, and QUIC.

Retrieving an RFC by number, searching standards by topic, and listing recent RFCs or documents from a particular technical area.

It provides the relevant standard documents when implementing or troubleshooting network protocols.

rfc-search — Skill for Claude Code and Codex by cheenu1092-oss

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/cheenu1092-oss/netmcp

agentmods

npx agentmods add skills/cheenu1092-oss/netmcp/rfc-search

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/cheenu1092-oss/netmcp/rfc-search/github.svg)](https://agentmods.dev/skills/cheenu1092-oss/netmcp/rfc-search)

Your own site

<a href="https://agentmods.dev/skills/cheenu1092-oss/netmcp/rfc-search"><img src="https://agentmods.dev/badge/skills/cheenu1092-oss/netmcp/rfc-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/cheenu1092-oss/netmcp/rfc-search"><img src="https://agentmods.dev/badge/skills/cheenu1092-oss/netmcp/rfc-search.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 75 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 454 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00075	$0.00454
Opus 5	$0.00037	$0.00227
Sonnet 5	$0.00015	$0.00091
Haiku 4.5	$0.00007	$0.00045

Measured 11d ago against content hash 34816b9b7a5f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

rfc-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 11d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/get.sh, scripts/install-mcp.sh, scripts/recent.sh, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/rfc-search/SKILL.md · 61 lines

What it actually says

RFC Search — IETF Standards & Protocol Lookup

CLI Usage (Quick & Easy)

Simple bash wrapper scripts for direct command-line use:

cd ./skills/rfc-search/scripts

# Get a specific RFC by number
./get.sh 8446

# Search RFCs by keyword
./search.sh "bgp" 5

# Get recent RFCs
./recent.sh 5

MCP Server Setup

cd SKILL_DIR/../../packages/rfc-search
npm install && node src/index.js

# Or install into Claude Code config
./scripts/install-mcp.sh

Tools Available

`rfc_get` — Get a specific RFC by number

Input: RFC number (e.g. 791 for IP, 8446 for TLS 1.3) Returns: Title, abstract, status, page count, link to full text

`rfc_search` — Search by keyword/topic

Input: Query string, optional rfc_only flag Returns: Matching documents with abstracts

`rfc_recent` — Latest published RFCs

Input: Limit, optional IETF area filter Returns: Most recently published standards

IETF Area Codes (for filtering)

int — Internet (IP, DHCP, DNS)
rtg — Routing (BGP, OSPF, IS-IS)
sec — Security (TLS, IPsec, OAuth)
ops — Operations & Management (SNMP, NETCONF)
tsv — Transport (TCP, UDP, QUIC)
wit — Web & Internet Transport (HTTP)

Data Source

IETF Datatracker REST API — no auth required: datatracker.ietf.org/api/v1/

Files

What ships with it

4 files 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.

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.

11d ago First seen · 61 lines · 75 tokens per session scan A 34816b9b7a5f

Subscribe to this mod's changes

rfc-search is a skill published in the GitHub repository cheenu1092-oss/netmcp (0 stars, last pushed 3d ago), licensed MIT. It adds 75 tokens to every session and 454 once invoked, about $0.0004 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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