What is mcp-research?

A research guide for building and checking Model Context Protocol (MCP) implementations. MCP is a standard for connecting AI assistants to tools and data sources.

Reviewing MCP server code, planning tools or data resources, investigating protocol problems, and checking an MCP system's design.

It helps you check whether an MCP implementation follows the protocol and handles security, permissions, and communication correctly.

How 84emllc/google-calendar-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to 84emllc/google-calendar-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/84emllc/google-calendar-mcp/main/.claude/skills/mcp-research/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/84emllc/google-calendar-mcp

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/84emllc/google-calendar-mcp/mcp-research/github.svg)](https://agentmods.dev/skills/84emllc/google-calendar-mcp/mcp-research)

Your own site

<a href="https://agentmods.dev/skills/84emllc/google-calendar-mcp/mcp-research"><img src="https://agentmods.dev/badge/skills/84emllc/google-calendar-mcp/mcp-research/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/84emllc/google-calendar-mcp/mcp-research"><img src="https://agentmods.dev/badge/skills/84emllc/google-calendar-mcp/mcp-research.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 923 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 100% copy Near-identical to another mod in the catalogue.

Token cost

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	$0.00000	$0.00923
Opus 5.5	$0.00000	$0.00369
Sonnet 5.5	$0.00000	$0.00185
Haiku 4.5	$0.00000	$0.00092

Measured 1mo ago against content hash d96ff92ef735, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-research 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 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.

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.

Origin

This is a copy

100% identical to mcp-research — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/mcp-research/SKILL.md · 117 lines

How it starts

The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MCP Implementation Research

Quick Start

What are you doing?

📝 Reviewing MCP server → references/implementation-checklist.md
🚀 Planning MCP feature → references/protocol-patterns.md
🐛 Protocol issue → references/common-pitfalls.md
✅ Architecture validation → All references + latest spec

Research Workflow

Understand implementation - What MCP capabilities? Which transport? What security requirements?
Consult references - Load relevant reference files progressively
Check latest spec - WebFetch https://modelcontextprotocol.io/specification/2025-06-18
Search community - WebSearch for "MCP [specific-issue] 2025"
Validate compliance - Protocol compliance, security, best practices
Report findings - Structured format (see examples/)

Critical MCP Requirements

Protocol Compliance (JSON-RPC 2.0)

All messages MUST include jsonrpc: "2.0"
Responses include result OR error, never both
Initialization: initialize → response → initialized notification
Use standard error codes (-32xxx)

Security & Consent

User consent MUST be obtained before data access
Tool execution requires explicit approval
No hardcoded credentials
Input/output sanitization required

Capability Advertisement

Declare all capabilities in initialize response
Types: tools, resources, prompts, logging, experimental
Protocol version: "2025-06-18" (latest)

Transport Layers

stdio:

Newline-delimited JSON-RPC messages
Use stderr for logging (not stdout)
Flush after each message

HTTP/SSE:

POST /mcp for JSON-RPC requests
GET /mcp/sse for server-sent events
CORS configured for browser clients

Key Reference Files

implementation-checklist.md - Protocol compliance, capabilities, security, production readiness protocol-patterns.md - Tool/resource/prompt patterns, best practices, code examples common-pitfalls.md - Known issues, edge cases, gotchas

Read the full file on GitHub · 117 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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 · 117 lines · 0 tokens per session scan A d96ff92ef735

Subscribe to this mod's changes

mcp-research is a skill published in the GitHub repository 84emllc/google-calendar-mcp (0 stars, last pushed 4mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 923 tokens. A static security scan graded it A with 0 findings. It is 100% identical to mcp-research, differing in 0 lines, and is treated as a copy.

Building agents Research ai google-calendar mcp model-context-protocol

google-calendar-mcp: Skill for Claude Code