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@flowrail/hook

v0.0.5

Published

FlowRail PreToolUse hook dispatcher for Claude Code (POC). Pre-write secret scan + LLM-backed code verifier; pre-bash supply-chain check via the FlowRail MCP server.

Downloads

573

Vulnerabilities

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Links

Git

Maintainers

abhartiyaabhartiya

Keywords

Readme

@flowrail/hook

PreToolUse hook dispatcher invoked by Claude Code on every Write/Edit/MultiEdit and Bash call. Exposes two sub-commands:

  • flowrail-hook pre-write — reconstructs post-edit content (handles plain Write, Edit with replace_all: false / true, and MultiEdit composition), runs a regex secret scan, and routes code files through the FlowRail server's MCP flowrail_verify_code tool against the active design review's guardrails.
  • flowrail-hook pre-bash — inspects tool_input.command, runs npm install --dry-run to resolve the tree on package-install patterns, and routes through MCP flowrail_check_dep_install for the 4-signal supply-chain check.

Reads FLOWRAIL_MCP_URL (default http://localhost:8787) for the server base URL and FLOWRAIL_API_KEY for the bearer. The full install (@flowrail/init-poc) bakes the URL into the hook command line in .claude/settings.json (tracked, no credential), but it does NOT bake the bearer there — .claude/settings.json is committed, and the env-reference contract requires the API key to live only in the tester's shell env. The hook inherits FLOWRAIL_API_KEY from whatever shell launched Claude Code; if that shell didn't export it, MCP calls fail open against the local-dev fallback. Keep FLOWRAIL_API_KEY exported (e.g. via ~/.zshrc) so every Claude Code session inherits it.

You probably don't invoke this directly — @flowrail/init-poc writes the right .claude/settings.json entries for you.

Source + docs: https://github.com/anshumanbh/flowstate

POC, eval-only.