Borrowing it
Nothing to install: this file belongs to incubateur-ademe/benefriches. 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/incubateur-ademe/benefriches/main/AGENTS.mdgit clone --depth 1 https://github.com/incubateur-ademe/benefrichesWrote 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/incubateur-ademe/benefriches/agents-md)<a href="https://agentmods.dev/instructions/incubateur-ademe/benefriches/agents-md"><img src="https://agentmods.dev/badge/instructions/incubateur-ademe/benefriches/agents-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/incubateur-ademe/benefriches/agents-md"><img src="https://agentmods.dev/badge/instructions/incubateur-ademe/benefriches/agents-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 | $0.01916 | $0.01916 |
| Opus 5.5 | $0.00766 | $0.00766 |
| Sonnet 5.5 | $0.00383 | $0.00383 |
| Haiku 4.5 | $0.00192 | $0.00192 |
Grade A, and why
benefriches AGENTS.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 9d 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 — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Benefriches
Bénéfriches (ADEME incubator, beta.gouv) helps land-development project managers ("chargés d'opération d'aménagement") assess the economic, social and environmental impacts of reconverting a site, so that more brownfields get reconverted. The UI and all user-facing copy are in French.
Core flow: describe a site → describe a reconversion project on it → view the project's impacts over an evaluation period, compared with leaving the site as is.
- Site natures (
siteNatureSchema):FRICHE(brownfield),AGRICULTURAL_OPERATION,NATURAL_AREA,URBAN_ZONE - Project types (
developmentPlanTypeSchema):URBAN_PROJECT,PHOTOVOLTAIC_POWER_PLANT - Creation modes:
express(generated from defaults) orcustom(step-by-step wizard); sites can also come fromcsv-import, projects can beduplicated soilsDistribution: surface area per soil type, the input to most impact calculations- Economic impact formulas (in French): documentation-calculs-impacts.md
Workspaces
pnpm monorepo; each workspace has its own AGENTS.md:
apps/api: NestJS REST API, PostgreSQL/Knex, Clean Architecture — apps/api/AGENTS.mdapps/web: React SPA, Vite + Redux, Clean Architecture — apps/web/AGENTS.mdapps/e2e-tests: Playwright end-to-end tests — apps/e2e-tests/AGENTS.mdpackages/shared: framework-free TypeScript used by api and web — packages/shared/AGENTS.md
Full-stack feature walkthrough: docs/feature-example.md.
Feature docs (docs/<feature>.md, e.g. lifecycle-emails.md) give the business intent the code can't: what the feature does for users, its business rules and why, where to look, what must not break. Keep one under ~250 lines. Leave out what the code or tests already say (SQL, log lines, copy, file trees, test lists), ticket history, and follow-ups (Linear). Update it only when the intent, a rule or an invariant changes. Manual QA steps go in the Linear ticket, not the repo.
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.
- 9d ago Changed · +2 lines · +58 tokens per session efa90e9bb1b2
- 24d ago Changed · +2 lines · +122 tokens per session b771e69794c0
- 1mo ago Changed · +13 lines · +550 tokens per session d5e9c00d40da
- 1mo ago Changed · -9 tokens per session c704caaea4d2
- 1mo ago Changed · +69 lines · +1,185 tokens per session 8f50e62f5b5b
- 2mo ago First seen · 4 lines · 10 tokens per session scan A 012c188c69e0
benefriches AGENTS.md is an instructions file published in the GitHub repository incubateur-ademe/benefriches (45 stars, last pushed today), licensed MIT. It adds 1,916 tokens to every session, about $0.0077 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 2026-08-30.
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