Borrowing it
Nothing to install: this file belongs to rapiddweller/datamimic. 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/rapiddweller/datamimic/development/AGENTS.mdgit clone --depth 1 https://github.com/rapiddweller/datamimicWrote 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/rapiddweller/datamimic/agents-md)<a href="https://agentmods.dev/instructions/rapiddweller/datamimic/agents-md"><img src="https://agentmods.dev/badge/instructions/rapiddweller/datamimic/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/rapiddweller/datamimic/agents-md"><img src="https://agentmods.dev/badge/instructions/rapiddweller/datamimic/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 | $0.02684 | $0.02684 |
| Opus 5.5 | $0.01074 | $0.01074 |
| Sonnet 5.5 | $0.00537 | $0.00537 |
| Haiku 4.5 | $0.00268 | $0.00268 |
Grade A, and why
datamimic 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 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 — 200 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Guidance for agents working on DATAMIMIC CE, the MIT-licensed Python engine. Use DATAMIMIC for synthetic data, fixtures, database seeding and pseudonymization.
XML is the persisted executable project format. A project is a directory with a
datamimic.xml entry, the steps it includes, and acceptance/build.json: the
expectations, roles and verification options Build proves the project against.
DmJsonDocumentV1 is a transient agent representation of one XML file.
The same explicit seed reproduces data within the tested compatibility boundary.
Consumer workflow and project-mode routing live in the installable DATAMIMIC skill. See client setup; a package installation does not include this repository guide.
Tool selection
Use .venv/bin/datamimic in this checkout. Install the optional MCP adapter only
when the calling environment uses MCP; both transports call the same application.
| Need | Command |
|---|---|
| Discover vocabulary | datamimic authoring capabilities (--full for contracts) |
| Inspect one element | datamimic authoring capability --domain element --name generate |
| Discover the document/acceptance schema | datamimic authoring schema / datamimic authoring schema --name build_request_v5 |
| Read a focused reference | datamimic authoring reference --topic assembly --name starter |
| Compile/decompile syntax | datamimic authoring compile - / datamimic authoring decompile model.xml |
| Prove a project | datamimic authoring build <project> |
| Validate/inspect existing XML | datamimic authoring lint model.xml / datamimic authoring dry-run model.xml |
| Run bounded XML with explicit write opt-in | datamimic authoring run model.xml --allow-side-effects |
| Execute the persisted project normally | datamimic run datamimic.xml |
| Export editor/authoring contracts | datamimic authoring export-contract contracts.zip |
Authoring commands default to JSON. File input and - for stdin are supported.
Exit codes: 0 succeeds, 1 rejects an input/operation, 2 is CLI usage error.
compile/decompile readiness proves syntax only; Build readiness additionally
requires complete bounded evidence and the declared acceptance checks.
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 Changed · -16 lines · -275 tokens per session f013cc86179c
- yesterday Changed · +1 lines · +23 tokens per session a1cd4fdeff75
- 2d ago Changed · +1 lines · +63 tokens per session 91061366896e
- 3d ago Changed · +18 lines · +325 tokens per session dfedc8365bcd
- 7d ago Changed · -3 lines · +16 tokens per session 639d5ba01562
- 10d ago Changed · +2 lines · +40 tokens per session 9109c05270cb
- 11d ago Changed · -67 lines · -1,060 tokens per session c470174f179b
- 17d ago Changed · +1 tokens per session 19dea217c28e
- 1mo ago Changed · +4 lines · +66 tokens per session f35ad5e0e9f5
- 1mo ago First seen · 260 lines · 3,485 tokens per session scan A f98321f1d184
datamimic AGENTS.md is an instructions file published in the GitHub repository rapiddweller/datamimic (116 stars, last pushed today), licensed MIT. It adds 2,684 tokens to every session, about $0.0107 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.
Other instructions, from other repositories
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Copilot instructions for Quality-Max/qmax-mcp, covering qualitymax qa workflow and adjacent tools.
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AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
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