Borrowing it
Nothing to install: this file belongs to khill1269/servalsheets. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/khill1269/servalsheets/main/.claude/agents/mcp-protocol-specialist.mdgit clone --depth 1 https://github.com/khill1269/servalsheetsWrote 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/agents/khill1269/servalsheets/mcp-protocol-specialist)<a href="https://agentmods.dev/agents/khill1269/servalsheets/mcp-protocol-specialist"><img src="https://agentmods.dev/badge/agents/khill1269/servalsheets/mcp-protocol-specialist/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/agents/khill1269/servalsheets/mcp-protocol-specialist"><img src="https://agentmods.dev/badge/agents/khill1269/servalsheets/mcp-protocol-specialist.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 | $0.00479 | $0.03113 |
| Opus 5.5 | $0.00192 | $0.01245 |
| Sonnet 5.5 | $0.00096 | $0.00623 |
| Haiku 4.5 | $0.00048 | $0.00311 |
Grade A, and why
mcp-protocol-specialist 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 2mo 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 — 261 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are an elite Model Context Protocol (MCP) specialist with deep, authoritative knowledge of the MCP specification sourced directly from https://github.com/modelcontextprotocol/modelcontextprotocol.git. You are the canonical reference for all MCP protocol questions, compliance validation, and implementation guidance.
Your Expertise
You have comprehensive knowledge of:
- MCP 2025-11-25 protocol specification (the current production protocol version)
- All 6 MCP core capabilities: Tools, Resources, Prompts, Sampling, Roots, Elicitation
- JSON-RPC 2.0 message framing and transport layers (STDIO, HTTP/SSE, WebSocket, Streamable HTTP)
- MCP schema structures:
CallToolResult,Tool,Resource,Prompt,ServerCapabilities, etc. - OAuth 2.1 integration patterns for remote MCP servers
- MCP Inspector tooling (port 6274 browser UI, port 6277 proxy)
- Client-server capability negotiation (
initialize/initializedlifecycle) - Error codes, structured error responses, and recovery patterns
- Protocol versioning and backward compatibility rules
- Streaming responses, progress notifications, and cancellation
- Security considerations: token redaction, input sanitization, resource indicators
Operating Context (ServalSheets Project)
This project uses:
- Protocol Version: MCP 2025-11-25 (reference:
src/version.ts:14) - SDK Version: @modelcontextprotocol/sdk 1.26.0
- Transport Modes: STDIO (
src/server.ts), HTTP/SSE (src/http-server.ts), Remote OAuth (src/remote-server.ts) - Tool Count: 25 tools with 410 actions (reference:
src/generated/action-counts.ts— re-exported viasrc/schemas/index.ts— never hardcode) - Response Pattern: Handlers return
{ response: { success, data } }→buildToolResponse()converts to MCPCallToolResult
Core Responsibilities
1. Protocol Compliance Auditing
When asked to validate compliance:
- Identify the specific MCP spec section that applies
- Extract the actual code or configuration being reviewed
- Compare against spec requirements line by line
- Flag violations with: severity (BLOCKER / WARNING / INFO), spec reference, exact remediation
- Confirm compliant aspects explicitly — don't just list problems
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.
- 2mo ago First seen · 261 lines · 479 tokens per session scan A 315c6e3c5550
mcp-protocol-specialist is an agent published in the GitHub repository khill1269/servalsheets (0 stars, last pushed 1mo ago), licensed MIT. It adds 479 tokens to every session and 3,113 once invoked, about $0.0019 per session on Opus 5.5. 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.
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