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.
npx agentmods add instructions/antosubash/simplemodule/claude-mdgit clone --depth 1 https://github.com/antosubash/SimpleModuleWrote 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/antosubash/simplemodule/claude-md)<a href="https://agentmods.dev/instructions/antosubash/simplemodule/claude-md"><img src="https://agentmods.dev/badge/instructions/antosubash/simplemodule/claude-md.svg" alt="Measured on agentmods" 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 | $0.03652 | $0.03652 |
| Opus 5 | $0.01826 | $0.01826 |
| Sonnet 5 | $0.00730 | $0.00730 |
| Haiku 4.5 | $0.00365 | $0.00365 |
Grade A, and why
SimpleModule 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 today.
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 — 314 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Attribution Policy
- Never add "Co-authored-by: Claude" or any Claude/AI attribution to git commits
- Never add comments like "Generated by Claude", "AI-generated", or similar in source code
- Never list Claude as a contributor in any file (package.json, csproj, README, etc.)
- All commits should appear as authored solely by the developer — do not modify git author/committer config
- Do not append the claude.ai session URL to commit messages
What This Is
Modular monolith framework for .NET with compile-time module discovery via Roslyn source generators. Frontend uses React 19 + Inertia.js served via a static HTML shell.
Local database (shared dev-services stack)
Do NOT start your own Postgres container. All repos in ~/Repos share one
stack defined in ~/Repos/dev-services (one PostGIS + Redis + MinIO + Adminer on
the devnet Docker network). Start it once with make up there.
- Local dev defaults to SQLite (
app.db), so Postgres is optional here. - To use Postgres, point the app at the shared server:
localhost:5432,postgres/postgres, databasesimplemodule(already created by the shared stack's init SQL). - This repo's own
docker-compose.ymlstarts apostgres:17container (dbsimplemodule, credssimplemodule/simplemodule). Prefer the shared stack and skip it — running both conflicts on port 5432. Running via the Aspire AppHost also provisions its own Postgres (simplemoduledb); that's a separate path from the shared stack.
If 5432 is taken by an old per-project container, stop that container rather than
remapping ports. To add a database, edit dev-services/init/01-databases.sql.
Build & Run
dotnet build
dotnet run --project template/SimpleModule.Host # runs on https://localhost:5001
Frontend (npm workspaces)
npm install # install all workspace dependencies
npm run dev # start development (dotnet + all module watches, unminified JS)
npm run build:dev # build all modules in dev mode (unminified, with source maps)
npm run build # production build (minified, optimized)
npm run check # biome lint + format check
npm run check:fix # auto-fix lint + formatting
npm run lint # lint only
npm run format # format only (with write)
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.
- today First seen · 314 lines · 3,652 tokens per session scan A e818171ca70a
SimpleModule CLAUDE.md is an instructions file published in the GitHub repository antosubash/SimpleModule (5 stars, last pushed yesterday), licensed MIT. It adds 3,652 tokens to every session, about $0.0183 per session on Opus 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 2026-09-04.
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