What is web-search-mcp CLAUDE.md?

Repository instructions for developing web-search-mcp, a Python FastMCP server that exposes web-search and data-retrieval tools to AI systems. They describe commands, tests, and the server’s registry-and-implementation structure.

Use them when installing dependencies, running the server, linting, formatting, type-checking, running tests, or locating tool registrations and implementations.

They give an AI coding assistant the project’s expected commands and architecture, reducing guesswork when changing the repository.

How sydasif/web-search-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to sydasif/web-search-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/sydasif/web-search-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/sydasif/web-search-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/instructions/sydasif/web-search-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/sydasif/web-search-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/sydasif/web-search-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/sydasif/web-search-mcp/claude-md/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/instructions/sydasif/web-search-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/sydasif/web-search-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,443 This file is loaded in full into every session.

When invoked 1,443 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.

Model	Per session	Once invoked
Fable 5.1	$0.01443	$0.01443
Opus 5.5	$0.00577	$0.00577
Sonnet 5.5	$0.00289	$0.00289
Haiku 4.5	$0.00144	$0.00144

Measured 4d ago against content hash 4cc151d37eaa, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

web-search-mcp 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 4d 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 · 101 lines

How it starts

The opening of the file, as written. The whole thing — 101 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.

Design docs → wiki — tool selection guide, design decisions, recommended workflows, tools status, plugin setup, and development standards.

Common Commands

Development

Install dependencies: uv sync
Run server: uv run omnisearch (or uv run python -m web_search_mcp.server)
Lint: uv run ruff check .
Format: uv run ruff format .
Type check: uv run mypy .

Version / Release

Bump version: update pyproject.toml, web_search_mcp/__init__.py, .claude-plugin/plugin.json, .claude-plugin/marketplace.json to same version
After version bump: run uv sync to update lockfile and rebuild package
Plugin auto-updates on reload when version changes

Testing

Run all tests: uv run pytest
Run single test file: uv run pytest tests/test_module.py
Run specific test: uv run pytest tests/test_module.py::test_function_name
Run with coverage: uv run pytest --cov=web_search_mcp

Architecture

High-Level Design

The project is a FastMCP server that exposes a suite of web search and data retrieval tools to LLMs. It follows a "Registry-Implementation" pattern:

Registry (server.py): The central point where FastMCP is initialized and tools are decorated with @mcp.tool. It handles the mapping between MCP tool definitions and the underlying Python implementations.
Implementation Layers:
- search/: Implements core web search engines (e.g., DuckDuckGo, Exa).
- social/: Integrates with community platforms (GitHub, Reddit, Hacker News, X, LinkedIn).
- tools/: Contains specialized utilities (arXiv, Wikipedia, Digg, Techmeme, Polymarket, Rerank).
Internal Infrastructure (_ prefixed folders):
- _http/: Centralized HTTP client logic to ensure consistent timeouts, headers, error handling, and SSRF protection (blocks private/internal IP addresses).
- _models/: Shared Pydantic models for requests and responses to ensure type safety across the server.
- _config/: Manages settings, environment variables, and global rate limits. See limits.py for hard-coded result depth constraints (e.g., quick, default, deep) used by social tools.
- _utils/: Low-level helpers for markdown formatting, result scoring, and date-window utilities.

Read the full file on GitHub · 101 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.

4d ago Changed · +1 lines · +30 tokens per session 4cc151d37eaa
7d ago Changed · +13 lines · +269 tokens per session ddb06728b905
8d ago Changed · +6 lines · +82 tokens per session 61e423038efb
1mo ago Changed · -2 tokens per session 938e20b36eeb
2mo ago First seen · 81 lines · 1,064 tokens per session scan A e6b09196d6c8

Subscribe to this mod's changes

web-search-mcp CLAUDE.md is an instructions file published in the GitHub repository sydasif/web-search-mcp (25 stars, last pushed 4d ago), licensed MIT. It adds 1,443 tokens to every session, about $0.0058 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 2026-08-30.

Research arxiv claude duckduckgo github hacker-news reddit

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web-search-mcp: Instructions file for Claude Code