whatsapp-bridge

whatsapp-bridge is a skill for Claude Code, Codex from TheSmokeDev/taskchad-os. It costs 63 tokens per session (486 once invoked), scanned A, original, MIT.

A connection layer that lets an agent receive WhatsApp messages and send its replies back through WhatsApp.

In plain words
What is it for?
Use it to connect a WhatsApp number, receive messages through webhooks, restrict allowed senders, and deliver replies.
Why use it?
It removes the need to build a separate chat system for WhatsApp by adapting messages to an existing chat engine.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to connect a WhatsApp number, receive messages through webhooks, restrict allowed senders, and deliver replies.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thesmokedev/taskchad-os/whatsapp-bridge
Install

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.

Any agent
npx skills add TheSmokeDev/taskchad-os --skill whatsapp-bridge
Clone the repo
git clone --depth 1 https://github.com/TheSmokeDev/taskchad-os

Made for: Claude Code, Codex.

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-bridge

README.md
[![agentmods](https://agentmods.dev/badge/skills/thesmokedev/taskchad-os/whatsapp-bridge/github.svg)](https://agentmods.dev/skills/thesmokedev/taskchad-os/whatsapp-bridge)
Your own site
<a href="https://agentmods.dev/skills/thesmokedev/taskchad-os/whatsapp-bridge"><img src="https://agentmods.dev/badge/skills/thesmokedev/taskchad-os/whatsapp-bridge/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-bridge

Your own site · 80×15
<a href="https://agentmods.dev/skills/thesmokedev/taskchad-os/whatsapp-bridge"><img src="https://agentmods.dev/badge/skills/thesmokedev/taskchad-os/whatsapp-bridge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 486 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00063 $0.00486
Opus 5 $0.00032 $0.00243
Sonnet 5 $0.00013 $0.00097
Haiku 4.5 $0.00006 $0.00049

Measured 7d ago against content hash 5cd53c131fdb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

whatsapp-bridge 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 7d 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.

optional-skills/communication/whatsapp-bridge/SKILL.md · 57 lines

What it actually says

WhatsApp Bridge

Wire WhatsApp into the existing chat interface as one more channel adapter. The framework already abstracts Telegram/Slack/Discord (see .claude/sections/02_*); this adds a WhatsApp adapter behind the same interface — it does not fork the engine.

Provider

Use the WhatsApp Cloud API (Meta) or an equivalent gateway (e.g. Twilio for WhatsApp). Both deliver inbound messages via webhook and accept outbound sends via REST.

Required .env values:

WHATSAPP_PHONE_NUMBER_ID=
WHATSAPP_ACCESS_TOKEN=
WHATSAPP_VERIFY_TOKEN=          # for webhook handshake
WHATSAPP_ALLOWED_NUMBERS=       # comma-separated allowlist

Adapter contract

Implement the channel adapter to match the existing chat interface:

  1. Inbound — verify the webhook signature, drop senders not in WHATSAPP_ALLOWED_NUMBERS, normalize the payload to the engine's message shape, and hand it to the router.
  2. Outbound — render the engine's reply to WhatsApp's message format and POST it to the Cloud API.

Security

  • Enforce WHATSAPP_ALLOWED_NUMBERS on every inbound message — mirror the TELEGRAM_ALLOWED_USER_IDS allowlist pattern. Unknown senders are dropped, not answered.
  • Outbound sends are mutations: route them through the chat.send capability gate with an audit trail. Never call the WhatsApp API directly from a tool.
  • Verify the webhook X-Hub-Signature-256 HMAC before trusting any payload.
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. 7d ago First seen · 57 lines · 63 tokens per session scan A 5cd53c131fdb

Subscribe to this mod's changes

whatsapp-bridge is a skill published in the GitHub repository TheSmokeDev/taskchad-os (23 stars, last pushed today), licensed MIT. It adds 63 tokens to every session and 486 once invoked, about $0.0003 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 2026-09-03.

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