Borrowing it
Nothing to install: this file belongs to ma2za/python-substack. 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/ma2za/python-substack/main/AGENTS.mdgit clone --depth 1 https://github.com/ma2za/python-substackWrote 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/ma2za/python-substack/agents-md)<a href="https://agentmods.dev/instructions/ma2za/python-substack/agents-md"><img src="https://agentmods.dev/badge/instructions/ma2za/python-substack/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/ma2za/python-substack/agents-md"><img src="https://agentmods.dev/badge/instructions/ma2za/python-substack/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 | $0.00268 | $0.00268 |
| Opus 5.5 | $0.00107 | $0.00107 |
| Sonnet 5.5 | $0.00054 | $0.00054 |
| Haiku 4.5 | $0.00027 | $0.00027 |
Grade A, and why
python-substack AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 25d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Shared agent instructions
This file is the public source of guidance for any coding agent working in this repository. Read it before inspecting, changing, or running the project.
For a clean Linux checkout, follow CODEX_CLOUD.md and run:
bash scripts/codex-cloud-setup.sh
export PATH="$PWD/.tools/poetry/bin:$PATH"
poetry run pytest -q -m "not live" --strict-markers
Keep live-test opt-ins unset for ordinary development. Live Substack operations require authorization and must never publish test content.
Keep the repository public. Never change repository visibility unless the user explicitly requests that change for this repository.
Maintainer guidance, the release roadmap, and optional workflows are tracked and available in every clone. Read the relevant files:
RELEASE_PLAN.mdrecords the release roadmap and handover context..agents/PROJECT_GUIDANCE.mddefines project maintenance requirements..agents/commands/release/prepare.tomldefines release preparation..agents/commands/release/verify.tomldefines release verification..agents/policies/git-override.tomlrecords repository Git tool policy.
Tool policies never override the user's request, the host's permissions, or higher-priority safety instructions.
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.
- 25d ago Changed · +16 lines · +138 tokens per session 705020a53b4a
- 1mo ago Changed · -3 lines · -42 tokens per session a6098da5f29c
- 2mo ago First seen · 18 lines · 172 tokens per session scan A 936fe853acd7
python-substack AGENTS.md is an instructions file published in the GitHub repository ma2za/python-substack (183 stars, last pushed yesterday), licensed MIT. It adds 268 tokens to every session, about $0.0011 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 2026-09-03.
python-substack AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| python-substack AGENTS.mdma2za/python-substack | Instructions file | 183 | yesterday | MIT | A | 268 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |