It can check the agent's context after each tool action, helping identify context issues during a session.

PostToolUse — Hook for Claude Code by kninetimmy/orch

PostToolUse

PostToolUse is a hook for Claude Code from kninetimmy/orch. Its token cost is not measured, scanned A, original, MIT.

A post-tool-use hook that runs a context-check command after an agent tool call finishes.

In plain words

What is it for?: It is for running `orch hook claude context-check` after tool calls complete.
Why use it?: It can check the agent's context after each tool action, helping identify context issues during a session.

Written for Claude Code: PostToolUse hook event.

Part of the orch plugin — 3 skills, 3 commands, 5 agents, 5 hooks shipped together

One of 5 entries in hooks.json upstream. Installing this one merges just its entry into your config; the other 4 are separate, each on its own page.

Good fit It is for running orch hook claude context-check after tool calls complete.

Compare 6 hooks from other repositories ↓

Install with agentmods

npx agentmods add hooks/kninetimmy/orch/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/kninetimmy/orch

Made for: Claude Code.

Or install orch, the plugin that ships this one along with the rest of its 3 skills, 3 commands, 5 agents, 5 hooks.

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.

README.md

[![agentmods](https://agentmods.dev/badge/hooks/kninetimmy/orch/post-tool-use/github.svg)](https://agentmods.dev/hooks/kninetimmy/orch/post-tool-use)

Your own site

<a href="https://agentmods.dev/hooks/kninetimmy/orch/post-tool-use"><img src="https://agentmods.dev/badge/hooks/kninetimmy/orch/post-tool-use/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.

Your own site · 80×15

<a href="https://agentmods.dev/hooks/kninetimmy/orch/post-tool-use"><img src="https://agentmods.dev/badge/hooks/kninetimmy/orch/post-tool-use.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 original No closer match found in the catalogue.

Security

Grade A, and why

PostToolUse 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 28d 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.

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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

UserPromptSubmit — 91% identical, 2 lines differ

adapters/claude/hooks/hooks.json · 13 lines

What it actually says

{
  "PostToolUse": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "orch hook claude context-check",
          "timeout": 10
        }
      ]
    }
  ]
}

Same file

What else `hooks.json` configures

This page is one entry in a file that holds 5. 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.

28d ago First seen · 13 lines scan A 99aebb367ee0

Subscribe to this mod's changes

PostToolUse is a hook published in the GitHub repository kninetimmy/orch (22 stars, last pushed 6d ago), licensed MIT. Its token cost is not measured: a hook is shell that never enters the context. 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 2026-10-10.

Building agents

PostToolUse next to 6 hooks from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
PostToolUsekninetimmy/orch	Hook	22	6d ago	MIT	A	—	Claude Code
PostToolUsesupabase/supabase	Hook	115k	yesterday	Apache-2.0	A	—	Claude Code
SessionStartsupabase/supabase	Hook	115k	yesterday	Apache-2.0	A	—	Claude Code
SessionStartgoogle-gemini/gemini-cli	Hook	109k	yesterday	Apache-2.0	A	—	Claude Code
PreToolUseapache/superset	Hook	75k	yesterday	Apache-2.0	A	—	Claude Code
PreToolUseanthropics/claude-cookbooks	Hook	54k	2d ago	MIT	A	—	Claude Code
PostToolUseanthropics/claude-plugins-official	Hook	46k	yesterday	Apache-2.0	A	—	Claude Code