agentmods.dev

PostToolUse

Post-tool hooks are automatic commands that run after selected agent tools finish, including task creation, to-do updates, skill use, file edits, and commands. They perform follow-up checks, memory storage, compliance checks, and auditing.

In plain words
What is it for?
Use it to run task, memory, to-do, skill-compliance, completion, command, and audit scripts after matching tools are used.
Why use it?
They apply consistent follow-up work after important agent actions instead of depending on manual review.

Hook

32 1mo ago A scan tokens not measured copy · 88% MIT
View the source file DNYoussef/context-cascade
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.

agentmods
npx agentmods add hooks/dnyoussef/context-cascade/post-tool-use
Clone the repo
git clone --depth 1 https://github.com/DNYoussef/context-cascade
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. Scan, not verified.
Origin 88% copy Near-identical to another mod 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 2d 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

This is a copy

88% identical to PreToolUse — 57 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

hooks/hooks.json · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "PostToolUse": [
    {
      "matcher": "Task",
      "hooks": [
        {
          "type": "command",
          "command": "powershell -ExecutionPolicy Bypass -File \"${CLAUDE_PLUGIN_ROOT}/hooks/enforcement/post-task-spawn.ps1\"",
          "timeout": 15000
        },
        {
          "type": "command",
          "command": "powershell -ExecutionPolicy Bypass -File \"${CLAUDE_PLUGIN_ROOT}/hooks/memory-mcp/post-task-memory-store.ps1\"",
          "timeout": 60000,
          "$comment": "1 minute for memory persistence"
        }
      ]
    },
    {
      "matcher": "TodoWrite",
      "hooks": [
        {
          "type": "command",
          "command": "powershell -ExecutionPolicy Bypass -File \"${CLAUDE_PLUGIN_ROOT}/hooks/enforcement/post-todowrite.ps1\"",
          "timeout": 10000
        }
      ]
    },
    {
      "matcher": "Skill",
      "hooks": [
        {
          "type": "command",
          "command": "powershell -ExecutionPolicy Bypass -File \"${CLAUDE_PLUGIN_ROOT}/hooks/enforcement/post-skill-compliance.ps1\"",
          "timeout": 30000
        },
        {
          "type": "command",
          "command": "powershell -ExecutionPolicy Bypass -File \"${CLAUDE_PLUGIN_ROOT}/hooks/skill-completion-verifier.ps1\"",
          "timeout": 30000
        },
        {
          "type": "command",
          "command": "powershell -ExecutionPolicy Bypass -File \"${CLAUDE_PLUGIN_ROOT}/hooks/command-executed.ps1\"",
          "timeout": 10000
        }
      ]
    },
    {
      "matcher": "Write|Edit",
      "hooks": [
        {
          "type": "command",
          "command": "powershell -ExecutionPolicy Bypass -File \"${CLAUDE_PLUGIN_ROOT}/hooks/skill-completion-verifier.ps1\"",
          "timeout": 30000
        },
        {
          "type": "command",
          "command": "powershell -ExecutionPolicy Bypass -File \"${CLAUDE_PLUGIN_ROOT}/hooks/connascence-audit/run-audit.ps1\"",
          "timeout": 300000,
          "$comment": "5 minutes for full

Read the full file on GitHub · 66 lines

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. 2d ago First seen · 66 lines scan A 6f0ca74171f2

Subscribe to this mod's changes

PostToolUse is a hook published in the GitHub repository DNYoussef/context-cascade (32 stars, last pushed 1mo 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. It is 88% identical to PreToolUse, differing in 57 lines, and is treated as a copy.

Memory and contextPlanning
Related

Other hooks, from other repositories

PostToolUse

Runs after a tool call finishes for Write and Edit tool calls, executing format_and_lint.sh. From supabase/supabase.

supabase/supabase · not measured

SessionStart

Runs when a session starts, executing on-start.js via node. From google-gemini/gemini-cli.

google-gemini/gemini-cli · not measured

SessionStart

Runs when a session starts on startup, executing install_pkgs.sh. From supabase/supabase.

supabase/supabase · not measured

PreToolUse

Runs before the agent uses a tool for Bash tool calls, running an inline shell check. From apache/superset.

apache/superset · not measured

PreToolUse

Runs before the agent uses a tool, executing pre-write.sh and pre-bash.sh (2 commands). From anthropics/claude-cookbooks.

anthropics/claude-cookbooks · not measured

SessionStart

Runs when a session starts, executing session-start.sh. From anthropics/claude-cookbooks.

anthropics/claude-cookbooks · not measured