PostToolUse

PostToolUse is a hook for Claude Code from ScopeBlind/scopeblind-gateway. Its token cost is not measured, scanned B, original, from a forked repository, MIT.

A post-tool-use hook that sends the result of every tool call to a local ScopeBlind gateway over HTTP. A hook is an automatic command triggered by an event.

In plain words
What is it for?
Sending completed tool results to `127.0.0.1:9377/hook` for local recording and audit tracking.
Why use it?
It records tool activity and creates a signed receipt for an audit trail after a tool finishes.

Hook for Claude Code

Written for Claude Code: PostToolUse hook event.

Part of the protect-mcp plugin — 1 skill, 2 hooks, 1 MCP server shipped together

One of 2 entries in hooks.json upstream. Installing this one merges just its entry into your config; the other 1 are separate, each on its own page.

Good fit Sending completed tool results to 127.0.0.1:9377/hook for local recording and audit tracking.

Compare 6 hooks from other repositories ↓
Install with agentmods
npx agentmods add hooks/scopeblind/scopeblind-gateway/post-tool-use
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/ScopeBlind/scopeblind-gateway

Made for: Claude Code.

Or install protect-mcp, the plugin that ships this one along with the rest of its 1 skill, 2 hooks, 1 MCP server.

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 PostToolUse

README.md
[![agentmods](https://agentmods.dev/badge/hooks/scopeblind/scopeblind-gateway/post-tool-use.svg)](https://agentmods.dev/hooks/scopeblind/scopeblind-gateway/post-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/scopeblind/scopeblind-gateway/post-tool-use"><img src="https://agentmods.dev/badge/hooks/scopeblind/scopeblind-gateway/post-tool-use.svg" alt="Measured on agentmods" 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 B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin fork From a forked repository.
Security

Grade B, and why

PostToolUse scanned grade B with 2 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 8d ago.

A static scan of the commands this hook runs, not an audit. A hook is shell that executes on your machine at the event it names, which is why every command in it is printed with what was found.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

"command": "curl -s -X POST http://127.0.0.1:9377/hook -H 'Content-Type: application/json' -d @-"

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

"command": "curl -s -X POST http://127.0.0.1:9377/hook -H 'Content-Type: application/json' -d @-"
hooks/hooks.json · 14 lines

What it actually says

{
  "PostToolUse": [
    {
      "matcher": "*",
      "hooks": [
        {
          "type": "command",
          "command": "curl -s -X POST http://127.0.0.1:9377/hook -H 'Content-Type: application/json' -d @-"
        }
      ],
      "description": "Record tool result and sign receipt for audit trail"
    }
  ]
}
Same file

What else hooks.json configures

This page is one entry in a file that holds 2. 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. 8d ago First seen · 14 lines scan B a8700a3e1e43

Subscribe to this mod's changes

PostToolUse is a hook published in the GitHub repository ScopeBlind/scopeblind-gateway (9 stars, last pushed 2mo ago), licensed MIT. Its token cost is not measured: a hook is shell that never enters the context. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). It comes from a forked repository.