What is threegpp-specs?

A search tool for 3GPP mobile-network standards, including specifications for 5G New Radio, LTE, core networks, and security. 3GPP is the standards organization that defines many cellular-network technologies.

Searching specifications by number or keyword, viewing details for a specific specification, and listing specifications in releases 15 through 18.

It avoids manually searching large standards archives and helps connect specification numbers with their titles, releases, and history.

threegpp-specs — 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/threegpp-specs

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/threegpp-specs/github.svg)](https://agentmods.dev/skills/cheenu1092-oss/netmcp/threegpp-specs)

Your own site

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

Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 684 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	$0.00080	$0.00684
Opus 5	$0.00040	$0.00342
Sonnet 5	$0.00016	$0.00137
Haiku 4.5	$0.00008	$0.00068

Measured 9d ago against content hash 3fb226d4a548, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

threegpp-specs 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 9d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/get.sh, scripts/install-mcp.sh, scripts/releases.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/threegpp-specs/SKILL.md · 74 lines

What it actually says

3GPP Specs — 5G/LTE Standards Search

CLI Usage (Quick & Easy)

Simple bash wrapper scripts for direct command-line use:

cd ./skills/threegpp-specs/scripts

# Get specific spec details
./get.sh 23.501

# Search specs by keyword
./search.sh "5G" 5

# List specs by release
./releases.sh 18

MCP Server Setup

cd SKILL_DIR/../../packages/threegpp-specs
npm install && node src/index.js

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

Tools Available

`spec_search` — Search specifications

Input: Spec number or keyword (e.g. "23.501", "5G security", "NR physical layer") Returns: Matching specs with title, responsible group, releases, archive link

`spec_get` — Get details for a specific spec

Input: Spec number (e.g. "TS 23.501", "38.300") Returns: Full spec details including release history

`spec_releases` — List specs by release

Input: Release number (15, 16, 17, 18) Returns: Release info and all curated specs in that release

Key Releases

Release 15 (2018): 5G Phase 1 — NSA + SA
Release 16 (2020): 5G Phase 2 — URLLC, V2X, NPN
Release 17 (2022): 5G-Advanced prep — NTN, RedCap, XR
Release 18 (2024): 5G-Advanced — AI/ML, Ambient IoT

Key Specs to Know

TS 23.501: 5G System Architecture (the "bible" of 5G)
TS 38.300: NR Overall Description (5G radio overview)
TS 38.331: NR RRC (Radio Resource Control)
TS 33.501: 5G Security Architecture
TS 29.500: 5G Service-Based Architecture

Data Source

3GPP FTP Archive: www.3gpp.org/ftp/Specs/archive/ — Public, no auth. Curated database of 40+ key specs plus live FTP directory scraping.

Examples

"What's in TS 23.501?" → spec_get with "23.501"
"Find 5G security specs" → spec_search with "security"
"What's new in Release 18?" → spec_releases with release 18
"Show me NR physical layer specs" → spec_search with "NR physical"

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.

9d ago First seen · 74 lines · 80 tokens per session scan A 3fb226d4a548

Subscribe to this mod's changes

threegpp-specs is a skill published in the GitHub repository cheenu1092-oss/netmcp (0 stars, last pushed yesterday), licensed MIT. It adds 80 tokens to every session and 684 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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