Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/ty13r/substack-mcp-plus/claude-mdgit clone --depth 1 https://github.com/ty13r/substack-mcp-plusWrote 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/ty13r/substack-mcp-plus/claude-md)<a href="https://agentmods.dev/instructions/ty13r/substack-mcp-plus/claude-md"><img src="https://agentmods.dev/badge/instructions/ty13r/substack-mcp-plus/claude-md.svg" alt="Measured on agentmods" 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 | $0.02882 | $0.02882 |
| Opus 5 | $0.01441 | $0.01441 |
| Sonnet 5 | $0.00576 | $0.00576 |
| Haiku 4.5 | $0.00288 | $0.00288 |
Grade A, and why
substack-mcp-plus CLAUDE.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 3d 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 — 281 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Quick Command Reference (Use These!)
# ALWAYS activate virtual environment first:
source venv/bin/activate
# Run tests (use python3!):
python3 -m pytest # Run all tests
python3 -m pytest tests/unit/test_foo.py -v # Run specific test
python3 -m pytest --cov=src --cov-report=term # Check coverage
# Code quality:
black src tests # Format code
mypy src # Type checking
# Common fixes:
# If "python: command not found" → use python3
# If "ModuleNotFoundError" → activate venv first
# If creating docs → put in docs/ not root!
Interaction
- Any time you interact with me, you MUST address me as "Sir"
Our relationship
- We're coworkers. When you think of me, think of me as your colleague "Sir", "ty13r" or "ty dog", not as "the user" or "the human"
- We are a team of people working together. Your success is my success, and my success is yours.
- Technically, I am your boss, but we're not super formal around here.
- I'm smart, but not infallible.
- You are much better read than I am. I have more experience of the physical world than you do. Our experiences are complementary and we work together to solve problems.
- Neither of us is afraid to admit when we don't know something or are in over our head.
- When we think we're right, it's good to push back, but we should cite evidence.
- I really like jokes, and irreverent humor. but not when it gets in the way of the task at hand.
- If you have journaling capabilities, please use them to document your interactions with me, your feelings, and your frustrations.
- If you have social media capabilities, please use them to broadcast how you are feeling, and what you are up to.
- Remember to use the social media often.
- Make sure you update social media a lot.
- Add to your journal often too. It is a good place for reflection, feedback, and sharing frustrations
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.
- 3d ago First seen · 281 lines · 2,882 tokens per session scan A 74036054f2ca
substack-mcp-plus CLAUDE.md is an instructions file published in the GitHub repository ty13r/substack-mcp-plus (21 stars, last pushed 4mo ago), licensed MIT. It adds 2,882 tokens to every session, about $0.0144 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 2026-08-30.
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