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prismor: Hook for Claude Code

.claude/settings.json

SessionEnd is a hook for Claude Code from PrismorSec/prismor. Its token cost is not measured, scanned A, a copy of UserPromptSubmit, Apache-2.0.

A session-end hook that runs a shell command when an agent session finishes. The command tries to run a Python development hook in observation mode when the required environment settings and YAML support are available.

In plain words
What is it for?
Running the repository's session-end development hook and selecting an available Python interpreter with YAML support.
Why use it?
It can perform a final project-specific check or observation automatically, while reporting when the required Python setup is missing.

Hook for Claude Code

Written for Claude Code: $CLAUDE_PROJECT_DIR variable.

This is PrismorSec/prismor's own configuration. It tells Claude Code how to work on prismor itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything prismor configures →

One of 8 entries in settings.json upstream. Installing this one merges just its entry into your config; the other 7 are separate, each on its own page.

not rated 448repo +26 today A scan tokens not measured copy · 95% Apache-2.0
View source ↗ PrismorSec/prismor prismor.dev
Reuse

Borrowing it

Nothing to install: this file belongs to PrismorSec/prismor. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/PrismorSec/prismor/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/PrismorSec/prismor

Made for: Claude Code.

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 SessionEnd

README.md
[![agentmods](https://agentmods.dev/badge/hooks/prismorsec/prismor/session-end/github.svg)](https://agentmods.dev/hooks/prismorsec/prismor/session-end)
Your own site
<a href="https://agentmods.dev/hooks/prismorsec/prismor/session-end"><img src="https://agentmods.dev/badge/hooks/prismorsec/prismor/session-end/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.

agentmods 80×15 button for SessionEnd

Your own site · 80×15
<a href="https://agentmods.dev/hooks/prismorsec/prismor/session-end"><img src="https://agentmods.dev/badge/hooks/prismorsec/prismor/session-end.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 95% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

SessionEnd 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 3d 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

95% identical to UserPromptSubmit — 2 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.

.claude/settings.json · 13 lines

What it actually says

{
  "SessionEnd": [
    {
      "matcher": "*",
      "hooks": [
        {
          "type": "command",
          "command": "sh -c '[ \"$PRISMOR_DOGFOOD\" = 0 ] && exit 0; for py in \"$PRISMOR_DEV_PYTHON\" python3 python; do [ -n \"$py\" ] && \"$py\" -c \"import yaml\" </dev/null 2>/dev/null && exec \"$py\" \"$CLAUDE_PROJECT_DIR/scripts/dev-hook.py\" hook-dispatch --agent claude --mode observe; done; echo \"prismor dogfood: no python with pyyaml found (pip install pyyaml, or set PRISMOR_DEV_PYTHON)\" >&2; exit 2'"
        }
      ]
    }
  ]
}
Same file

What else settings.json configures

This page is one entry in a file that holds 8. 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. 3d ago First seen · 13 lines scan A 2fc28e1d2d61

Subscribe to this mod's changes

SessionEnd is a hook published in the GitHub repository PrismorSec/prismor (448 stars, last pushed today), licensed Apache-2.0. 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 95% identical to UserPromptSubmit, differing in 2 lines, and is treated as a copy.

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