Borrowing it
Nothing to install: this file belongs to ohnotnow/devnotes. 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/ohnotnow/devnotes/master/CLAUDE.mdgit clone --depth 1 https://github.com/ohnotnow/devnotesWrote 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/ohnotnow/devnotes/claude-md)<a href="https://agentmods.dev/instructions/ohnotnow/devnotes/claude-md"><img src="https://agentmods.dev/badge/instructions/ohnotnow/devnotes/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/ohnotnow/devnotes/claude-md"><img src="https://agentmods.dev/badge/instructions/ohnotnow/devnotes/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 | $0.07474 | $0.07474 |
| Opus 5.5 | $0.02990 | $0.02990 |
| Sonnet 5.5 | $0.01495 | $0.01495 |
| Haiku 4.5 | $0.00747 | $0.00747 |
Grade B, and why
devnotes CLAUDE.md scanned grade B with 1 finding 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.
Unrestricted tool accessmediumExcessive agency
A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.
Do not try and run any commands or tools that interact with the database. Either lando or artisan or boost. The user will run migrations for you if you ask. This is a copy
98% identical to devnotes AGENTS.md — 24 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.
How it starts
The opening of the file, as written. The whole thing — 533 lines — stays where its author put it; the contents beside it link to each section on GitHub.
devnotes
A scrappy "wiki meets GitHub gists" for our small dev team: tiny markdown notes capturing gotchas and lessons, findable later. One Laravel app; the web UI, a Go CLI (sibling repo ../devnotes-cli), and the MCP server (live, Passport OAuth) are all clients of the same notes data - the first two via /api/v1 + Sanctum tokens. Frictionless capture is the thing to protect; recall matters as much as capture.
Get oriented (do this before deciding anything)
ant foundation- the vision and settled decisions (wiki-style editing IS the product; users are the gate, no allow-list; soft deletes;#id= real Eloquent id).ant search "handover"- the session handover note has the full state, pending user decisions, and every hard-won gotcha (.envleaks into tests, apiResource route-name theft, soft-delete-vs-FK trap, Flux a11y defaults, permission gates).ait readyandait log- what's open and what shipped. The API contract lives in the epic descriptions, including two clarifying notes (everything is data-wrapped; PATCH needs full payloads).- The session-start surfacing design (
ait show devnotes-UkLWZ) is deliberately undecided - it's a conversation with the user, never a guess.
House specifics for this repo
- Local dev: lando at
https://devnotes.lndo.site, loginadmin2x/secret(seeded).lando mfs(migrate:fresh + TestDataSeeder) is fine to run. Tests:php artisan test --compact- in-memory sqlite, no migrations needed; phpunit.xml pins the SSO_* keys because.envleaks into any key it doesn't pin. - Models use
#[Fillable]attributes (seeapp/Models/User.php), not$fillable. - Any new model whose rows travel through export/import needs a
ulidcolumn minted on creation (seeNote::booted()) - the ulid is the cross-install identity that keeps re-imports idempotent. Codes/ids do not survive merging two pots; ulids do. - Flux UI everywhere; create/edit forms use
flux:modal variant="flyout". New screens need:flux:heading level=,autofocusin modals, aria-labels on switches - the a11y bar is real for us (.ac.uk). - Commits:
agent-commitonly (explicit file list, preview then--yes TOKEN, no attribution). The user has permitted its use; never push to GitHub without their say-so. - After finishing a piece of PHP work, run
./vendor/bin/phpstan analyse --memory-limit=2G- the repo holds PHPStan level 5 clean, so fix anything it reports before calling the work done.
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 · 533 lines · 7,474 tokens per session scan B 93dd803ab7b0
devnotes CLAUDE.md is an instructions file published in the GitHub repository ohnotnow/devnotes (1 stars, last pushed 22d ago), licensed MIT. It adds 7,474 tokens to every session, about $0.0299 per session on Opus 5.5. A static security scan graded it B with 1 finding (unrestricted tool access). It is 98% identical to devnotes AGENTS.md, differing in 24 lines, and is treated as a copy.
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