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.
git clone --depth 1 https://github.com/Jimmyh-world/Cardano_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/jimmyh-world/cardano_mcp/cardano-mcp)<a href="https://agentmods.dev/rules/jimmyh-world/cardano_mcp/cardano-mcp"><img src="https://agentmods.dev/badge/rules/jimmyh-world/cardano_mcp/cardano-mcp/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/rules/jimmyh-world/cardano_mcp/cardano-mcp"><img src="https://agentmods.dev/badge/rules/jimmyh-world/cardano_mcp/cardano-mcp.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 | $0.03030 | $0.03030 |
| Opus 5 | $0.01515 | $0.01515 |
| Sonnet 5 | $0.00606 | $0.00606 |
| Haiku 4.5 | $0.00303 | $0.00303 |
Grade A, and why
cardano-mcp 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 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.
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 — 283 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MCP Server Project-Specific Development Rules
These rules complement our main development collaboration rules, focusing specifically on the Model Context Protocol (MCP) server project with TypeScript. This project serves as a specialized RAG (Retrieval-Augmented Generation) gateway to existing Cardano resources, documentation, and tools to assist with dApp development, smart contract writing/auditing, and UTXO management.
Project Purpose and Scope
The MCP server is a gateway to existing Cardano resources, not a reimplementation of blockchain functionality.
-
Resource Integration:
- Connect to existing Cardano resources and documentation
- Good Example: Creating APIs that fetch and contextualize documentation from Cardano repositories
- Bad Example: Attempting to reimplement Cardano functionality from scratch
- Map relationships between Cardano tools and resources
- Good Example: Building a knowledge graph that connects related documentation, tools, and code examples
- Bad Example: Storing isolated, disconnected resources without context
- Prioritize discoverability and context
- Good Example: Implementing metadata and tagging systems for efficient resource discovery
- Bad Example: Dumping raw documentation without organization or search capabilities
- Connect to existing Cardano resources and documentation
-
RAG Implementation:
- Design effective retrieval mechanisms for Cardano resources
- Good Example: Using semantic search to find relevant documentation based on user queries
- Bad Example: Only supporting exact keyword matching
- Implement context-aware generation
- Good Example: Synthesizing information from multiple sources to answer complex queries
- Bad Example: Returning only verbatim passages without integration
- Track resource provenance and citations
- Good Example: Always attributing information to its original source with links
- Bad Example: Presenting information without references to its origin
- Design effective retrieval mechanisms for Cardano resources
Architecture Design
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 First seen · 283 lines · 3,030 tokens per session scan A 93786ddfaf36
cardano-mcp is a cursor rule published in the GitHub repository Jimmyh-world/Cardano_MCP (1 stars, last pushed 1y ago), licensed MIT. It adds 3,030 tokens to every session, about $0.0152 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
ponytail
Ponytail, lazy senior dev mode. Always pick the simplest solution that works.
angular-20
This rule provides comprehensive best practices and coding standards for Angular development, focusing on modern TypeScript, standalone components, signals, and performance optimizations.
dev-standard
Apache Superset development standards and guidelines for Cursor IDE.
cli-error-handling
CLI command error handling patterns.
prefer-direct-imports-over-module-mocks
Prefer extracting a testable core over vi.mock / vi.resetModules when unit tests need to reach production logic entangled with config, env, or singletons.
control-plane-descriptors
Control plane descriptor and instance implementation patterns.