Borrowing it
Nothing to install: this file belongs to cohemm/prism. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/cohemm/prism/main/CLAUDE.mdgit clone --depth 1 https://github.com/cohemm/prismWrote 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.
[](https://agentmods.dev/instructions/cohemm/prism/claude-md)<a href="https://agentmods.dev/instructions/cohemm/prism/claude-md"><img src="https://agentmods.dev/badge/instructions/cohemm/prism/claude-md/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.
<a href="https://agentmods.dev/instructions/cohemm/prism/claude-md"><img src="https://agentmods.dev/badge/instructions/cohemm/prism/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.01139 | $0.01139 |
| Opus 5.5 | $0.00456 | $0.00456 |
| Sonnet 5.5 | $0.00228 | $0.00228 |
| Haiku 4.5 | $0.00114 | $0.00114 |
Grade A, and why
prism CLAUDE.md 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 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
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.
How it starts
The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Prism - Development Environment
This CLAUDE.md is for local Prism development. In this repo, treat the checked-in
commands/andskills/directories as the command source of truth. Do not require generated skill copies for slash-command discovery. Codex setup may refresh managed mirrors under~/.codex/skills/prism-*, but those are install artifacts, not the authored workflow source.
Prism Commands
When the user types psm analyze or psm analyze ..., read skills/analyze/SKILL.md and follow its instructions exactly.
When the user types psm brownfield or psm brownfield ..., read skills/brownfield/SKILL.md and follow its instructions exactly.
When the user types psm incident or psm incident ..., read skills/incident/SKILL.md and follow its instructions exactly.
When the user types psm prd or psm prd ..., read skills/prd/SKILL.md and follow its instructions exactly.
When the user types psm setup, read skills/setup/SKILL.md and follow its instructions exactly.
When the user types any of these commands, read the corresponding repo skill file
from skills/ and follow it exactly:
| Input | Action |
|---|---|
psm analyze ... |
Read skills/analyze/SKILL.md and follow it |
psm brownfield ... |
Read skills/brownfield/SKILL.md and follow it |
psm incident ... |
Read skills/incident/SKILL.md and follow it |
psm prd ... |
Read skills/prd/SKILL.md and follow it |
psm setup ... |
Read skills/setup/SKILL.md and follow it |
/prism Commands (Dev Mode)
When the user types any of these commands, read the corresponding repo skill file
from skills/ and follow it exactly:
| Input | Action |
|---|---|
/prism:analyze ... |
Read skills/analyze/SKILL.md and follow it |
/prism:brownfield ... |
Read skills/brownfield/SKILL.md and follow it |
/prism:incident ... |
Read skills/incident/SKILL.md and follow it |
/prism:prd ... |
Read skills/prd/SKILL.md and follow it |
/prism:setup ... |
Read skills/setup/SKILL.md and follow it |
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.
- 2mo ago First seen · 102 lines · 1,139 tokens per session scan A 8f5c528c53f3
prism CLAUDE.md is an instructions file published in the GitHub repository cohemm/prism (5 stars, last pushed 5mo ago), licensed MIT. It adds 1,139 tokens to every session, about $0.0046 per session on Opus 5.5. 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 2026-08-31.
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