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 skills add Myst4ke/mcp-to-skills-converter --skill mcp-protocol-developmentgit clone --depth 1 https://github.com/Myst4ke/mcp-to-skills-converterWrote 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/skills/myst4ke/mcp-to-skills-converter/mcp-protocol-development)<a href="https://agentmods.dev/skills/myst4ke/mcp-to-skills-converter/mcp-protocol-development"><img src="https://agentmods.dev/badge/skills/myst4ke/mcp-to-skills-converter/mcp-protocol-development/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/skills/myst4ke/mcp-to-skills-converter/mcp-protocol-development"><img src="https://agentmods.dev/badge/skills/myst4ke/mcp-to-skills-converter/mcp-protocol-development.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 | $0.00036 | $0.02467 |
| Opus 5.5 | $0.00014 | $0.00987 |
| Sonnet 5.5 | $0.00007 | $0.00493 |
| Haiku 4.5 | $0.00004 | $0.00247 |
Grade A, and why
mcp-protocol-development scanned grade A 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 1mo 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
**Technologies**: TypeScript, Node.js, MCP SDK (@modelcontextprotocol/sdk), JSON-RPC 2.0, child_process How it starts
The opening of the file, as written. The whole thing — 375 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MCP Protocol Development Skill
Overview
This skill provides specialized guidance for implementing Model Context Protocol (MCP) integration functionality. It covers MCP server lifecycle management, JSON-RPC 2.0 communication, tool discovery via tools/list requests, schema analysis, and MCP subprocess management. This skill is essential for tasks involving MCP server interaction, protocol communication, and tool inspection.
Technologies: TypeScript, Node.js, MCP SDK (@modelcontextprotocol/sdk), JSON-RPC 2.0, child_process
Applicable to US-3 Tasks: TASK-3.1, TASK-3.2, TASK-3.3, TASK-3.4
Core Capabilities
- MCP Server Lifecycle: Start, monitor, and gracefully shutdown MCP server subprocesses
- JSON-RPC Communication: Send requests and parse responses following JSON-RPC 2.0 spec
- Tool Discovery: Query MCP for available tools using tools/list protocol
- Schema Parsing: Extract and analyze tool input/output schemas
- Process Management: Handle MCP subprocess with proper cleanup and error handling
- Protocol Validation: Ensure MCP responses conform to expected formats
- Timeout Handling: Implement timeouts for unresponsive MCP operations
- Error Recovery: Handle MCP startup failures, crashes, and protocol errors
Input Requirements
Required:
- Task details (ID, description, acceptance criteria)
- MCP installation path or configuration
- Target file paths for implementation
- MCP SDK version and protocol specification
Optional:
- Existing MCP connection utilities
- Configuration files for MCP settings
- Test fixtures for MCP responses
Output Format
Implementation Guidance Includes:
- TypeScript interface definitions for MCP protocol
- subprocess management code with spawn()
- JSON-RPC request/response handlers
- Tool schema parsing logic
- Error handling wrappers
- Unit test templates for MCP integration
- Example MCP interactions
Dependencies
Claude Code Tools Required:
- Read (for reviewing existing code and specs)
- Write (for creating new files)
- Edit (for modifying existing implementations)
- Bash (for running tests and installs)
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.
- 1mo ago First seen · 375 lines · 36 tokens per session scan A e0a5b49f88ae
mcp-protocol-development is a skill published in the GitHub repository Myst4ke/mcp-to-skills-converter (1 stars, last pushed 11mo ago), licensed MIT. It adds 36 tokens to every session and 2,467 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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