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mcp-deep-search: Instructions file for Claude Code

CLAUDE.md

mcp-deep-search CLAUDE.md is an instructions file for Claude Code from just-every/mcp-deep-search. It costs 1,021 tokens per session, scanned A, original, MIT.

A repository instruction file for an MCP server that searches the web through several search providers. MCP is a standard way for AI tools to call external services, and the project offers both a command-line interface and a server interface.

In plain words
What is it for?
Use it when developing or running the search tool, selecting a search provider, starting its MCP server, compiling TypeScript, linting, type-checking, or running tests.
Why use it?
It explains the project's main files and the commands needed to develop, build, check, and test it. This helps an agent work with search providers without having to infer the project structure.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is just-every/mcp-deep-search's own configuration. It tells Claude Code how to work on mcp-deep-search itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-deep-search configures →

not rated 9repo 4d ago A scan 1,021 tokens original MIT
View source ↗ just-every/mcp-deep-search justevery.com
Reuse

Borrowing it

Nothing to install: this file belongs to just-every/mcp-deep-search. 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/just-every/mcp-deep-search/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/just-every/mcp-deep-search

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
[![agentmods](https://agentmods.dev/badge/instructions/just-every/mcp-deep-search/claude-md.svg)](https://agentmods.dev/instructions/just-every/mcp-deep-search/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/just-every/mcp-deep-search/claude-md"><img src="https://agentmods.dev/badge/instructions/just-every/mcp-deep-search/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,021 This file is loaded in full into every session.
When invoked 1,021 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01021 $0.01021
Opus 5 $0.00511 $0.00511
Sonnet 5 $0.00204 $0.00204
Haiku 4.5 $0.00102 $0.00102

Measured 8d ago against content hash ab0326032c66, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

mcp-deep-search CLAUDE.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 8d 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.

CLAUDE.md · 164 lines

How it starts

The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

MCP server for deep web search using @just-every/search. Provides both CLI and MCP interfaces for searching across multiple providers including Google, Bing, Brave, DuckDuckGo, and more.

Core Modules & Files

  • src/serve.ts: MCP server using SDK
  • src/index.ts: CLI interface using Commander
  • src/types.d.ts: TypeScript definitions
  • Uses @just-every/search for all search functionality

Commands

Development

npm run dev search "query"           # Search via CLI
npm run dev search "query" -p brave  # Use specific provider
npm run serve:dev                    # Run MCP server in dev mode

Build & Production

npm run build                        # Compile TypeScript to JavaScript
npm run start                        # Run compiled CLI
npm run serve                        # Run compiled MCP server

Code Quality

npm run lint                         # Run ESLint
npm run typecheck                    # TypeScript type checking
npm test                             # Run tests with Vitest

Architecture Overview

A TypeScript-based MCP server that wraps @just-every/search to provide web search capabilities through the Model Context Protocol.

Core Components

  1. MCP Server (src/serve.ts)

    • SDK-based MCP implementation
    • Exposes deep_search tool
    • Formats search results for AI consumption
    • Supports multiple search providers

  2. CLI Interface (src/index.ts)

    • Commander-based command line tool
    • Search command with provider selection
    • JSON output option
    • AI answer support

Key Patterns

  • Environment variables for API keys
  • Async/await for all operations
  • Proper error handling
  • Minimal dependencies

Pre-Commit Requirements

IMPORTANT: Always run these commands before committing:

npm test          # Ensure tests pass
npm run lint      # Check linting
npm run build     # Ensure TypeScript compiles

Read the full file on GitHub · 164 lines

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.

  1. 8d ago First seen · 164 lines · 1,021 tokens per session scan A ab0326032c66

Subscribe to this mod's changes

mcp-deep-search CLAUDE.md is an instructions file published in the GitHub repository just-every/mcp-deep-search (9 stars, last pushed 4d ago), licensed MIT. It adds 1,021 tokens to every session, about $0.0051 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.

LLMagentmcpmcp-serversearchweb-search
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