fast-context

fast-context is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from blxzer77/cursor-trellis. Its token cost is not measured, scanned A, original, AGPL-3.0.

A locally running service that helps an AI agent find relevant code by meaning, not only by exact words. MCP is a standard way for an agent to connect to external tools.

In plain words
What is it for?
Use it when an agent needs to search a Node.js codebase for functions, concepts, or related implementations.
Why use it?
Exact-text searches can miss code that uses different names for the same idea. Semantic search helps locate related code in a large project.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Written for no agent in particular: it speaks MCP, so any client can run it. Also seen: listed in a Claude config.

One of 4 entries in .mcp.json upstream. Installing this one merges just its entry into your config; the other 3 are separate, each on its own page.

Good fit Use it when an agent needs to search a Node.js codebase for functions, concepts, or related implementations.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/blxzer77/cursor-trellis/fast-context
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.

Clone the repo
git clone --depth 1 https://github.com/blxzer77/cursor-trellis

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

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.

agentmods badge for fast-context

README.md
[![agentmods](https://agentmods.dev/badge/mcp/blxzer77/cursor-trellis/fast-context/github.svg)](https://agentmods.dev/mcp/blxzer77/cursor-trellis/fast-context)
Your own site
<a href="https://agentmods.dev/mcp/blxzer77/cursor-trellis/fast-context"><img src="https://agentmods.dev/badge/mcp/blxzer77/cursor-trellis/fast-context/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.

agentmods 80×15 button for fast-context

Your own site · 80×15
<a href="https://agentmods.dev/mcp/blxzer77/cursor-trellis/fast-context"><img src="https://agentmods.dev/badge/mcp/blxzer77/cursor-trellis/fast-context.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Security

Grade A, and why

fast-context 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.

.mcp.json · 9 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Same file

What else .mcp.json configures

This page is one entry in a file that holds 4. Installing the file brings all of them; each is measured and scanned on its own page.

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. 1mo ago First seen · 9 lines scan A 916a2b152dd2

Subscribe to this mod's changes

fast-context is an MCP server published in the GitHub repository blxzer77/cursor-trellis (18 stars, last pushed 1mo ago), licensed AGPL-3.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. 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.