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/sandraschi/xkcd-mcp/cursorrulesgit clone --depth 1 https://github.com/sandraschi/xkcd-mcpWhat 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 | $0.00212 | $0.00212 |
| Opus 5 | $0.00106 | $0.00106 |
| Sonnet 5 | $0.00042 | $0.00042 |
| Haiku 4.5 | $0.00021 | $0.00021 |
Grade A, and why
cursorrules 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 yesterday.
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
xkcd-mcp — Cursor rules
Central documentation (read first)
Fleet standards live in MCP Central Docs (local clone):
D:\Dev\repos\mcp-central-docs\
Hub: standards\AGENT_PROTOCOLS.md.
Most relevant:
standards\SOTA_REQUIREMENTS.md— FastMCP 3.1+standards\TOOL_DESIGN_STANDARDS.md— portmanteau tools, docstringsstandards\WEBAPP_STANDARDS.md— webapp ports 10700–10800; this project 10778 / 10779operations\WEBAPP_PORTS.md— port registrystandards\PACKAGING_STANDARDS.md— uv, justfile,llms.txt+llms-full.txt, glama
Shell (Windows)
PowerShell: use ; to chain commands; avoid bash-only syntax in scripts.
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.
- yesterday First seen · 22 lines · 212 tokens per session scan A a48dda364856
cursorrules is a cursor rule published in the GitHub repository sandraschi/xkcd-mcp (2 stars, last pushed 29d ago), licensed MIT. It adds 212 tokens to every session, about $0.0011 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 2026-08-31.
Other cursor rules, from other repositories
cursorrules
BEFORE making any changes or starting work, ALWAYS.
cursorrules
You are working with a World Labs MCP server that generates and manages generative 3D worlds, sparks, painting portals, and a world library.
cursorrules
You have access to 46+ FreeCAD CAD/CAM/CAE tools via MCP.
implementation-honesty
Enforce no fake-success behavior in runtime code and UI.
cursorrules
Robot control server. Do not move the physical robot without checking health first.
git-workflow
Git branch and pull request workflow for this repository.