agentmods.dev

Stop

A completion hook that runs a guard script when the agent finishes a response.

In plain words
What is it for?
Use it to apply the sd0x-harness stop guard at the end of every response.
Why use it?
It adds a final check before the agent's work is considered complete.

Hook

188 yesterday A scan tokens not measured copy · 64% MIT
View the source file sd0xdev/sd0x-harness
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/sd0xdev/sd0x-harness/stop
Clone the repo
git clone --depth 1 https://github.com/sd0xdev/sd0x-harness
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 64% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

Stop 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 yesterday.

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

64% identical to SessionStart — 8 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 · 13 lines

What it actually says

{
  "Stop": [
    {
      "matcher": "",
      "hooks": [
        {
          "type": "command",
          "command": "${CLAUDE_PLUGIN_ROOT}/hooks/stop-guard.sh"
        }
      ]
    }
  ]
}
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. yesterday First seen · 13 lines scan A 50dece249650

Subscribe to this mod's changes

Stop is a hook published in the GitHub repository sd0xdev/sd0x-harness (188 stars, last pushed yesterday), 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 64% identical to SessionStart, differing in 8 lines, and is treated as a copy.

agent-harnessclaude-codeclaude-code-plugincodexharness-engineeringskills
Related

Other hooks, from other repositories

PreToolUse

Runs before the agent uses a tool for Edit, Write and Bash tool calls, executing cc10x_pretooluse_guard.py and cc10x_git_guard.py via python3 (2 commands). From romiluz13/cc10x.

romiluz13/cc10x · not measured

SessionStart

Runs when a session starts on startup, resume and compact, executing cc10x_sessionstart_context.py via python3. From romiluz13/cc10x.

romiluz13/cc10x · not measured

PostToolUse

Runs after a tool call finishes for Edit and Write tool calls, executing cc10x_posttooluse_artifact_guard.py via python3. From romiluz13/cc10x.

romiluz13/cc10x · not measured

TaskCompleted

Runs when a task is marked completed, executing cc10x_task_completed_guard.py via python3. From romiluz13/cc10x.

romiluz13/cc10x · not measured

PostCompact

Runs after the context is compacted, executing cc10x_event_logger.py via python3. From romiluz13/cc10x.

romiluz13/cc10x · not measured

SubagentStop

Runs when a subagent finishes, executing cc10x_event_logger.py via python3. From romiluz13/cc10x.

romiluz13/cc10x · not measured