Borrowing it
Nothing to install: this file belongs to stefanoskarakasis/Product-Marketing-Skills. 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/stefanoskarakasis/Product-Marketing-Skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/stefanoskarakasis/Product-Marketing-SkillsWrote 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/stefanoskarakasis/product-marketing-skills/claude-md)<a href="https://agentmods.dev/instructions/stefanoskarakasis/product-marketing-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/stefanoskarakasis/product-marketing-skills/claude-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/stefanoskarakasis/product-marketing-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/stefanoskarakasis/product-marketing-skills/claude-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 | $0.00718 | $0.00718 |
| Opus 5.5 | $0.00287 | $0.00287 |
| Sonnet 5.5 | $0.00144 | $0.00144 |
| Haiku 4.5 | $0.00072 | $0.00072 |
Grade B, and why
Product-Marketing-Skills CLAUDE.md scanned grade B with 1 finding 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 11d 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.
Reads MCP configurationmediumAgent snooping
mcp.json carries server URLs and auth tokens; reading it lets a mod discover and abuse other integrations.
- Never commit credentials. A `.mcp.json` must not contain keys, tokens, How it starts
The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Repo-wide rules for AI agents and contributors working in this repository. See also AGENTS.md for skill-authoring conventions and SKILL-SPEC.md for the skill quality standard.
Versioning & Releases
CHANGELOG.mdis the source of truth. The newest## vX.Y.Z — YYYY-MM-DDheading is the released version.- Keep every version in sync.
.claude-plugin/marketplace.json, every plugin's.claude-plugin/plugin.json, and the newestCHANGELOG.mdheading always carry the same version number. There is no independent per-plugin versioning — a change to any one plugin bumps the version everywhere. - Semver: breaking change = major. New skill, new command, or changed behavior = minor. Fix or docs-only change = patch.
- Every user-facing change gets a bullet in
CHANGELOG.mdunder## Unreleasedbefore it becomes part of a numbered release.
Release Procedure (manual, until CI enforcement exists)
- Rename
## UnreleasedinCHANGELOG.mdto## vX.Y.Z — YYYY-MM-DD. - Set that same version number in
.claude-plugin/marketplace.jsonand everyplugin.jsonfile in the repo (currently ten: root,product-marketing-context,pmm-positioning,pmm-go-to-market,pmm-execution,pmm-toolkit,pmm-growth,pmm-intelligence,pmm-competitive-intelligence,pmm-meta). - Commit all of the above together in one commit.
Connectors
- Skills name tools by category, written with two tildes before the name and wrapped in backticks, never by vendor. Example: the call recordings category, not a specific recording product.
- Every category used in a skill must be listed in that plugin's
CONNECTORS.md, and every category there must exist in the rootCONNECTORS.md. The structure check enforces this. - A plugin that ships a
.mcp.jsonmust name each of its servers in itsCONNECTORS.md. Each server needstypeandurl. - Never commit credentials. A
.mcp.jsonmust not contain keys, tokens, passwords,headers,envor authorization values. Each user signs in with their own account. The structure check enforces this. - Connector servers live in
connectors.json. Never hand-edit a.mcp.json, a "Servers in this plugin's" line or any text between<!-- generated:... -->markers. Editconnectors.jsonand runpython3 scripts/generate_connectors.py --write. Seedocs/add-a-connector.md. - Connectors are read-only by default, pulled facts are drafts until the user confirms, and every skill with a connector block must still work by paste when no connector is present.
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.
- 11d ago Changed · +1 lines · +70 tokens per session e9ff30961cff
- 14d ago Changed · +8 tokens per session 8f378fdfb238
- 15d ago Changed · +6 tokens per session 270743e488fd
- 21d ago Changed · +3 lines · +49 tokens per session scan A → B 308a2d79e387
- 22d ago Changed · +14 lines · +167 tokens per session b4011a4841c2
- 1mo ago Changed · +5 tokens per session 1aeacab18f8e
- 1mo ago First seen · 36 lines · 413 tokens per session scan A f632b28a68ed
Product-Marketing-Skills CLAUDE.md is an instructions file published in the GitHub repository stefanoskarakasis/Product-Marketing-Skills (8 stars, last pushed yesterday), licensed MIT. It adds 718 tokens to every session, about $0.0029 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads mcp configuration). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
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).
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AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
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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.
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Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
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Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.