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.
npx skills add JustMichael-80/MasterVault --skill context7-cligit clone --depth 1 https://github.com/JustMichael-80/MasterVaultWrote 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/justmichael-80/mastervault/context7-cli)<a href="https://agentmods.dev/skills/justmichael-80/mastervault/context7-cli"><img src="https://agentmods.dev/badge/skills/justmichael-80/mastervault/context7-cli/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/justmichael-80/mastervault/context7-cli"><img src="https://agentmods.dev/badge/skills/justmichael-80/mastervault/context7-cli.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 | $0.00067 | $0.00664 |
| Opus 5.5 | $0.00027 | $0.00266 |
| Sonnet 5.5 | $0.00013 | $0.00133 |
| Haiku 4.5 | $0.00007 | $0.00066 |
Grade A, and why
context7-cli 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.
This is a copy
100% identical to context7-cli — 20 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ctx7 CLI
The Context7 CLI does three things: fetches up-to-date library documentation, manages AI coding skills, and sets up Context7 MCP for your editor.
Make sure the CLI is up to date before running commands:
npm install -g ctx7@latest
Or run directly without installing:
npx ctx7@latest <command>
What this skill covers
- Documentation — Fetch current docs for any library. Use when writing code, verifying API signatures, or when training data may be outdated.
- Skills management — Install, search, suggest, list, remove, and generate AI coding skills.
- Setup — Configure Context7 MCP for Claude Code / Cursor / OpenCode.
Quick Reference
# Documentation
ctx7 library <name> <query> # Step 1: resolve library ID
ctx7 docs <libraryId> <query> # Step 2: fetch docs
# Skills
ctx7 skills install /owner/repo # Install from a repo (interactive)
ctx7 skills install /owner/repo name # Install a specific skill
ctx7 skills search <keywords> # Search the registry
ctx7 skills suggest # Auto-suggest based on project deps
ctx7 skills list # List installed skills
ctx7 skills remove <name> # Uninstall a skill
ctx7 skills generate # Generate a custom skill with AI (requires login)
# Setup
ctx7 setup # Configure Context7 MCP (interactive)
ctx7 login # Log in for higher rate limits + skill generation
ctx7 whoami # Check current login status
Authentication
ctx7 login # Opens browser for OAuth
ctx7 login --no-browser # Prints URL instead of opening browser
ctx7 logout # Clear stored tokens
ctx7 whoami # Show current login status (name + email)
Most commands work without login. Exceptions: skills generate always requires it; ctx7 setup requires it unless --api-key or --oauth is passed. Login also unlocks higher rate limits on docs commands.
What ships with it
3 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.
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 · 73 lines · 67 tokens per session scan A d7b70ba126d9
context7-cli is a skill published in the GitHub repository JustMichael-80/MasterVault (12 stars, last pushed 2mo ago), licensed MIT. It adds 67 tokens to every session and 664 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to context7-cli, differing in 20 lines, and is treated as a copy.
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