Borrowing it
Nothing to install: this file belongs to conorbronsdon/substack-mcp. 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/conorbronsdon/substack-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/conorbronsdon/substack-mcpWrote 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/conorbronsdon/substack-mcp/agents-md)<a href="https://agentmods.dev/instructions/conorbronsdon/substack-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/conorbronsdon/substack-mcp/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/conorbronsdon/substack-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/conorbronsdon/substack-mcp/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 | $0.00186 | $0.00186 |
| Opus 5 | $0.00093 | $0.00093 |
| Sonnet 5 | $0.00037 | $0.00037 |
| Haiku 4.5 | $0.00019 | $0.00019 |
Grade A, and why
substack-mcp 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.
What it actually says
Agent instructions
Read CLAUDE.md for repository architecture and development commands. Use a
focused branch and PR; CI checks the supported Node/OS combinations.
Preserve the draft-only long-form boundary and explicit immediate-publication
semantics of Notes. The tool catalog and side-effect classifications are checked
by src/__tests__/annotations.test.ts and the output-contract snapshots.
Publication selection and private data must not cross accounts; controls live in
src/__tests__/resolve-publications.test.ts and output-contracts.test.ts.
Use the release scripts to synchronize versions; npm run check:release and
npm run test:release enforce manifest alignment. Never put real credentials,
private drafts, subscriber data or local account paths in tests, logs or packages.
Credential hygiene requires reviewer inspection as well as automated checks.
Use clearly example-*-prefixed synthetic credential fixtures.
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 · 17 lines · 186 tokens per session scan A 08de932f065e
substack-mcp AGENTS.md is an instructions file published in the GitHub repository conorbronsdon/substack-mcp (29 stars, last pushed today), licensed MIT. It adds 186 tokens to every session, about $0.0009 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 2026-09-09.
Other instructions, from other repositories
skill-doctor git-workflow.instructions.md
Instructions for evilstar2016/skill-doctor, covering git-workflow, description, when to use and instructions.
skill-doctor github-automation.instructions.md
Instructions for evilstar2016/skill-doctor, covering github-automation, description, when to use and instructions.
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).