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 agentmods add instructions/sergiobayona/vector_mcp/agents-mdgit clone --depth 1 https://github.com/sergiobayona/vector_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/instructions/sergiobayona/vector_mcp/agents-md)<a href="https://agentmods.dev/instructions/sergiobayona/vector_mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/sergiobayona/vector_mcp/agents-md.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 | $0.04505 | $0.04505 |
| Opus 5 | $0.02253 | $0.02253 |
| Sonnet 5 | $0.00901 | $0.00901 |
| Haiku 4.5 | $0.00451 | $0.00451 |
Grade A, and why
vector_mcp AGENTS.md 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 3d 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
1 near-identical copy found in the catalogue:
- vector_mcp CLAUDE.md — 89% identical, 31 lines differ
How it starts
The opening of the file, as written. The whole thing — 600 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file provides guidance to Codex (Codex.ai/code) when working with code in this repository.
Project Overview
VectorMCP is a Ruby gem implementing the Model Context Protocol (MCP) server-side specification. It provides a framework for creating MCP servers that expose tools, resources, prompts, and roots to LLM clients with comprehensive security features, structured logging, and production-ready capabilities.
Essential Commands
Development Setup
bin/setup # Install dependencies and setup development environment
bin/console # Interactive Ruby console with the gem loaded
Testing and Quality
rake # Run default task (tests + linting)
rake spec # Run RSpec test suite only
rake rubocop # Run RuboCop linting only
bundle exec rspec # Run RSpec test suite
bundle exec rspec ./spec/vector_mcp/examples_spec.rb # run a single test file
bundle exec rspec ./spec/vector_mcp/logging_spec.rb # run logging tests
bundle exec rubocop # Run RuboCop linting and style checks
Documentation
rake yard # Generate YARD documentation
rake doc # Alias for yard (outputs to doc/ directory)
Example Usage
# Getting Started Examples
ruby examples/getting_started/basic_http_stream_server.rb # MCP-compliant HTTP streaming
# Core Features Examples
ruby examples/core_features/authentication.rb # Authentication demo
ruby examples/core_features/filesystem_roots.rb # Filesystem boundaries
ruby examples/core_features/input_validation.rb # Schema validation
ruby examples/core_features/cli_client.rb # Command-line client
# Logging Examples
ruby examples/logging/basic_logging.rb # Component-based logging
ruby examples/logging/structured_logging.rb # JSON structured output
ruby examples/logging/security_logging.rb # Security audit logging
ruby examples/logging/log_analysis.rb # Log processing tools
# Use Cases Examples
ruby examples/use_cases/file_operations.rb # File system operations
ruby examples/use_cases/data_analysis.rb # Data processing workflows
ruby examples/use_cases/web_scraping.rb # Content extraction
# Middleware Examples
ruby examples/middleware_examples.rb # Comprehensive middleware demo
ruby examples/simple_middleware_demo.rb # Basic middleware patterns
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.
- 3d ago First seen · 600 lines · 4,505 tokens per session scan A eb1db701ef6d
vector_mcp AGENTS.md is an instructions file published in the GitHub repository sergiobayona/vector_mcp (13 stars, last pushed 17d ago), licensed MIT. It adds 4,505 tokens to every session, about $0.0225 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 2026-08-30.
Other instructions, from other repositories
rails-hyperdrive CLAUDE.md
Instructions for rails-hyperdrive/rails-hyperdrive, covering claude.md, what this repo is, commands, ci matrix is ruby {3.2, 3.3, 3.4} × rails {7.2, 8.1} and reproduce a specific slot locally.
mcpscore AGENTS.md
Instructions for mcp-box/mcpscore, covering agent instructions for mcpscore and gotchas (learned the hard way).
ruby-sdk AGENTS.md
AGENTS.md instructions for modelcontextprotocol/ruby-sdk, covering agents.md, project overview, dev environment setup, build and test commands and testing instructions.
nextcloud-mcp-server CLAUDE.md
Claude Code instructions for cbcoutinho/nextcloud-mcp-server, covering claude.md, coding conventions, async/await patterns, type hints and code quality.
microsoft-planner-mcp python.instructions.md
Use when writing or modifying Python source code. Covers module layout, async patterns, imports, and framework conventions for FastMCP + Microsoft Graph SDK.
yandex-mcp AGENTS.md
Instructions for n-r-w/yandex-mcp, covering project specific rules and information, yandex services supported, tech stack, instructions and golang rules.