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 rules/meteordefect/sumosign-mcp/mcp-conventionsgit clone --depth 1 https://github.com/meteordefect/sumosign-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/rules/meteordefect/sumosign-mcp/mcp-conventions)<a href="https://agentmods.dev/rules/meteordefect/sumosign-mcp/mcp-conventions"><img src="https://agentmods.dev/badge/rules/meteordefect/sumosign-mcp/mcp-conventions.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 | $0.00000 | $0.00096 |
| Opus 5 | $0.00000 | $0.00048 |
| Sonnet 5 | $0.00000 | $0.00019 |
| Haiku 4.5 | $0.00000 | $0.00010 |
Grade A, and why
mcp-conventions 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 4d 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
MCP Conventions
- Env:
SUMOSIGN_API_KEYrequired;SUMOSIGN_API_URLoptional - Tools: upload → analyze → template → create/send envelope → poll → evidence download
- Never add a “sign document” tool that bypasses recipient consent
- Keep README tool list in sync with exports
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.
- 4d ago First seen · 13 lines · 0 tokens per session scan A 8ac5a3926037
mcp-conventions is a cursor rule published in the GitHub repository meteordefect/sumosign-mcp (0 stars, last pushed 19d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 96 tokens. 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 2026-08-31.
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