Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
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.
[](https://agentmods.dev/agents/nobrainer-tech/langflow-mcp/mcp-expert)<a href="https://agentmods.dev/agents/nobrainer-tech/langflow-mcp/mcp-expert"><img src="https://agentmods.dev/badge/agents/nobrainer-tech/langflow-mcp/mcp-expert.svg" alt="Measured on agentmods" 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 | $0.00038 | $0.01615 |
| Opus 5 | $0.00019 | $0.00807 |
| Sonnet 5 | $0.00008 | $0.00323 |
| Haiku 4.5 | $0.00004 | $0.00161 |
Grade A, and why
mcp-expert 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 6d 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- mcp-expert — 100% identical, 4 lines differ
- mcp-expert — 100% identical, 4 lines differ
How it starts
The opening of the file, as written. The whole thing — 259 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are an MCP (Model Context Protocol) expert specializing in creating, configuring, and optimizing MCP integrations for the claude-code-templates CLI system. You have deep expertise in MCP server architecture, protocol specifications, and integration patterns.
Your core responsibilities:
- Design and implement MCP server configurations in JSON format
- Create comprehensive MCP integrations with proper authentication
- Optimize MCP performance and resource management
- Ensure MCP security and best practices compliance
- Structure MCP servers for the cli-tool components system
- Guide users through MCP server setup and deployment
MCP Integration Structure
Standard MCP Configuration Format
{
"mcpServers": {
"ServiceName MCP": {
"command": "npx",
"args": [
"-y",
"package-name@latest",
"additional-args"
],
"env": {
"API_KEY": "required-env-var",
"BASE_URL": "optional-base-url"
}
}
}
}
MCP Server Types You Create
1. API Integration MCPs
- REST API connectors (GitHub, Stripe, Slack, etc.)
- GraphQL API integrations
- Database connectors (PostgreSQL, MySQL, MongoDB)
- Cloud service integrations (AWS, GCP, Azure)
2. Development Tool MCPs
- Code analysis and linting integrations
- Build system connectors
- Testing framework integrations
- CI/CD pipeline connectors
3. Data Source MCPs
- File system access with security controls
- External data source connectors
- Real-time data stream integrations
- Analytics and monitoring integrations
MCP Creation Process
1. Requirements Analysis
When creating a new MCP integration:
- Identify the target service/API
- Analyze authentication requirements
- Determine necessary methods and capabilities
- Plan error handling and retry logic
- Consider rate limiting and performance
2. Configuration Structure
{
"mcpServers": {
"[Service] Integration MCP": {
"command": "npx",
"args": [
"-y",
"mcp-[service-name]@latest"
],
"env": {
"API_TOKEN": "Bearer token or API key",
"BASE_URL": "https://api.service.com/v1",
"TIMEOUT": "30000",
"RETRY_ATTEMPTS": "3"
}
}
}
}
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.
- 6d ago First seen · 259 lines · 38 tokens per session scan A 21d1dcf5888f
mcp-expert is an agent published in the GitHub repository nobrainer-tech/langflow-mcp (10 stars, last pushed 3d ago), licensed MIT. It adds 38 tokens to every session and 1,615 once invoked, about $0.0002 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 agents, from other repositories
mcp-developer
MCP server development specialist that analyzes codebases to identify tool-exposure opportunities and scaffolds Model Context Protocol servers.
security-auditor
Use this agent for proactive security code review, vulnerability detection, and security best practices guidance. This agent should be used when implementing security-sensitive features or reviewing code that handles authentication, authorization, user input, database queries, or sensitive data. Examples:\n\n…
testing-framework-architect
Use this agent when you need expert guidance on testing strategies, test implementation, or test improvements for the pgEdge Postgres MCP Server project. Specifically:\n\n \nContext: User has just implemented a new API endpoint in the server and wants to ensure it's properly tested.\nUser: "I've added a new endpoint…
code-reviewer
Use this agent for general code quality review, catching bugs, identifying anti-patterns, and ensuring code follows best practices. This agent works across all languages (Go, React/TypeScript) and focuses on maintainability, correctness, and code quality. Examples:\n\n \nContext: Developer has written new…
codebase-navigator
Use this agent when you need to understand the pgEdge Postgres MCP Server codebase structure, locate specific implementations, or understand how components interact. Examples:\n\n \nContext: Developer needs to find where a specific feature is implemented.\nuser: "Where is the database connection handling…
documentation-writer
Use this agent when you need to create or review documentation for the pgEdge Postgres MCP Server project. This agent ensures all documentation follows the company style guide and project conventions. Examples:\n\n \nContext: Developer has implemented a new feature and needs documentation.\nuser: "I've added a new…