agentmods.dev

whatsapp-go-mcp: Instructions file for Claude Code

CLAUDE.md

whatsapp-go-mcp CLAUDE.md is an instructions file for Claude Code from samihalawa/whatsapp-go-mcp. It costs 833 tokens per session, scanned A, original, MIT.

Developer instructions for whatsapp-go-mcp, a Go server that provides WhatsApp Web access through either a REST API or MCP, a standard way for AI tools to call services.

In plain words
What is it for?
Use them when developing or operating the WhatsApp server, including its REST mode, MCP mode, Docker setup, tests, and Go packages.
Why use it?
They collect the commands and project structure needed to build, run, test, format, and check the server consistently.

Instructions file for Claude Code

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

This is samihalawa/whatsapp-go-mcp's own configuration. It tells Claude Code how to work on whatsapp-go-mcp 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 whatsapp-go-mcp configures →

not rated 6repo 10mo ago A scan 833 tokens original MIT
View source ↗ samihalawa/whatsapp-go-mcp
Reuse

Borrowing it

Nothing to install: this file belongs to samihalawa/whatsapp-go-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/samihalawa/whatsapp-go-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/samihalawa/whatsapp-go-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.

agentmods badge for whatsapp-go-mcp CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/samihalawa/whatsapp-go-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/samihalawa/whatsapp-go-mcp/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/samihalawa/whatsapp-go-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/samihalawa/whatsapp-go-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.

agentmods 80×15 button for whatsapp-go-mcp CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/samihalawa/whatsapp-go-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/samihalawa/whatsapp-go-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 833 This file is loaded in full into every session.
When invoked 833 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 $0.00833 $0.00833
Opus 5 $0.00417 $0.00417
Sonnet 5 $0.00167 $0.00167
Haiku 4.5 $0.00083 $0.00083

Measured 12d ago against content hash 8914e85cde17, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

whatsapp-go-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 12d 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 · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 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.

Common Development Commands

Building and Running

  • Build binary: cd src && go build -o whatsapp (Linux/macOS) or go build -o whatsapp.exe (Windows)
  • Run REST API mode: cd src && go run . rest or ./whatsapp rest
  • Run MCP server mode: cd src && go run . mcp or ./whatsapp mcp
  • Run with Docker: docker-compose up -d --build

Testing

  • Run all tests: cd src && go test ./...
  • Run specific package tests: cd src && go test ./validations
  • Run tests with coverage: cd src && go test -cover ./...

Development

  • Format code: cd src && go fmt ./...
  • Get dependencies: cd src && go mod tidy
  • Check for issues: cd src && go vet ./...

Project Architecture

This is a Go-based WhatsApp Web API server supporting both REST API and MCP (Model Context Protocol) modes.

Core Architecture Pattern

  • Domain-Driven Design: Business logic separated into domain packages (domains/)
  • Clean Architecture: Clear separation between UI, use cases, and infrastructure layers
  • Cobra CLI: Command pattern with separate commands for rest and mcp modes

Key Directories

  • src/: Main source code directory
  • src/cmd/: CLI commands (root, rest, mcp)
  • src/domains/: Business domain logic (app, chat, group, message, send, user, newsletter)
  • src/infrastructure/: External integrations (WhatsApp, database)
  • src/ui/: User interface layers (REST API, MCP server, WebSocket)
  • src/usecase/: Application use cases bridging domains and UI
  • src/validations/: Input validation logic
  • src/pkg/: Shared utilities and helpers

Configuration

  • Environment Variables: See .env.example for all available options
  • Command Line Flags: All env vars can be overridden with CLI flags
  • Config Priority: CLI flags > Environment variables > .env file

Database

  • Main DB: WhatsApp connection data (SQLite by default, supports PostgreSQL)
  • Chat Storage: Separate SQLite database for chat history (storages/chatstorage.db)
  • Database URIs: Configurable via DB_URI and DB_KEYS_URI environment variables

Read the full file on GitHub · 86 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. 12d ago First seen · 86 lines · 833 tokens per session scan A 8914e85cde17

Subscribe to this mod's changes

whatsapp-go-mcp CLAUDE.md is an instructions file published in the GitHub repository samihalawa/whatsapp-go-mcp (6 stars, last pushed 10mo ago), licensed MIT. It adds 833 tokens to every session, about $0.0042 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.

Backend and APIsGoLanguages
Related

Other instructions, from other repositories

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,296 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,153 tokens

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 6,785 tokens

spec-kit AGENTS.md

AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.

github/spec-kit · 7,126 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,469 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).

microsoft/vscode · 5,001 tokens