No red flags found in any of the 11 categories — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →
by yc-duan · MCP Server · ★ 1.3k
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
🔒 Is fastctx safe to install? View the security audit →
FastCtx English | 简体中文 Fast, context-efficient repository tools for AI agents. FastCtx is a local Rust tool runtime. It provides file reading, content search, file discovery, batch replacement, and Bash command execution through MCP. Repository operations run in a persistent process with stable input schemas and output formats. The model can gather the context it needs in fewer steps and spend more attention on understanding code, planning changes, and verifying results. The command opens the control terminal. Review the proposed changes, select Apply, then start a new ChatGPT / Codex session. FastCtx currently provides first-class setup for ChatGPT App and Codex CLI. Any MCP client can also register directly. What FastCtx solves Coding agents often assemble shell commands on the fly when they access a repository. They have to handle quotes, escaping, paths, and platform differences, then extract the useful information from terminal output. A simple file read or symbol search can take several tool calls just to confirm that the command is correct and the result is complete. This work consumes context and reasoning.
| Stars | 1,283 |
| Forks | 51 |
| Language | Rust |
| Category | MCP Server |
| License | Apache-2.0 |
| Quality Score | 67.5346371354039/100 |
| Open Issues | 21 |
| Last Updated | 2026-09-04 |
| Created | 2026-07-17 |
| Platforms | mcp, rust |
| Est. Tokens | ~27k |
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fastctx is Fast, context-efficient repository tools for AI agents (MCP). It is categorized as a MCP Server with 1.3k GitHub stars.
fastctx is primarily written in Rust.
You can find installation instructions and usage details in the fastctx GitHub repository at github.com/yc-duan/fastctx. The project has 1.3k stars and 51 forks, indicating an active community.
fastctx is released under the Apache-2.0 license, making it free to use and modify according to the license terms.
Grades come from a rule-based scan built on the SlowMist agent-security taxonomy, covering 11 red-flag categories including credential harvesting, data exfiltration, and curl | sh installers. It is a first-layer scan, not a manual audit — we say so rather than overstate it.
The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.
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