How do I install the Wa Relay skill?

Run npx skillmds add modbender/wa-relay in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Wa Relay safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: executes scripts. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Wa Relay?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Wa Relay free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Wa Relay?

modbender (@modbender) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Wa Relay by modbender — Agent Skill

Name: Wa Relay
Rating: 4.2 (5 reviews)
Author: modbender

Wa Relay

WhatsApp message relay for OpenClaw v0.2.0. Routes third-party DMs to a relay agent that forwards them to the main agent via sessions_send. The main agent notifies the owner with a suggested response. Supports direct number allowlists.

modbender 96e8c39 4 files · 15.7 KB Updated Sep 9, 2026 12 repo stars

File contents

wa-relay v0.2.0

Routes third-party WhatsApp DMs through a relay agent that forwards messages to the main agent via sessions_send. The main agent notifies the owner and proposes a response.

How It Works

Third-party sends a WhatsApp message
Relay agent receives it, forwards via sessions_send to the main agent session, and responds NO_REPLY (nothing sent back to the sender)
Main agent receives the inter-session message, notifies the owner on WhatsApp with the message and a suggested response
Owner decides: use the suggestion, modify it, or write something else
Main agent sends the response to the third party

Direct number allowlist

Numbers in the allowlist bypass the relay entirely and go straight to the main agent (same as the owner).

Setup

Run scripts/setup.sh <owner-phone-number> — creates relay workspace, patches main agent SOUL.md
Run scripts/configure.sh <owner-phone-number> [direct-numbers] — generates routing config
Apply the generated config (see references/SETUP.md)

Requirements

OpenClaw v2026.2.14+ with WhatsApp channel configured
Owner's phone number in international format (e.g. +573001234567)

Security Notes

This skill performs two actions that require elevated access. Both are necessary for multi-agent WhatsApp routing to work and are explained here for transparency:

1. Auth credential sharing

The setup script copies auth-profiles.json from the main agent to the relay agent. This is required because OpenClaw agents have isolated auth — without shared credentials, the relay agent cannot authenticate with any model provider and will silently fail. The script asks for confirmation before copying.

2. Session ID regex patch (temporary)

OpenClaw's session ID validator rejects : and + characters that WhatsApp phone-number routing generates (e.g. agent:wa-relay:whatsapp:+15551234567). The setup script patches the SAFE_SESSION_ID_RE regex in OpenClaw's dist files to allow these characters. This is a known bug (openclaw/openclaw#16211) with an open fix (PR #16531). Once merged, this patch becomes unnecessary and can be reverted. The script creates .bak backups and asks for confirmation before patching.

3. Main agent SOUL.md modification

The setup script appends a "Relay de WhatsApp" section to the main agent's SOUL.md so it knows how to handle forwarded messages. Review the added section after setup.

---name: wa-relaydescription: WhatsApp message relay for OpenClaw v0.2.0. Routes third-party DMs to a relay agent that forwards them to the main agent via sessions_send. The main agent notifies the owner with a suggested response. Supports direct number allowlists.--- # wa-relay v0.2.0 Routes third-party WhatsApp DMs through a relay agent that forwards messages to the main agent via `sessions_send`. The main agent notifies the owner and proposes a response. ## How It Works 1. **Third-party** sends a WhatsApp message 2. **Relay agent** receives it, forwards via `sessions_send` to the main agent session, and responds `NO_REPLY` (nothing sent back to the sender) 3. **Main agent** receives the inter-session message, notifies the **owner** on WhatsApp with the message and a suggested response 4. **Owner** decides: use the suggestion, modify it, or write something else 5. **Main agent** sends the response to the third party ### Direct number allowlist Numbers in the allowlist bypass the relay entirely and go straight to the main agent (same as the owner). ## Setup 1. Run `scripts/setup.sh <owner-phone-number>` — creates relay workspace, patches main agent SOUL.md 2. Run `scripts/configure.sh <owner-phone-number> [direct-numbers]` — generates routing config 3. Apply the generated config (see `references/SETUP.md`) ## Requirements - OpenClaw v2026.2.14+ with WhatsApp channel configured - Owner's phone number in international format (e.g. `+573001234567`) ## Security Notes This skill performs two actions that require elevated access. Both are necessary for multi-agent WhatsApp routing to work and are explained here for transparency: ### 1. Auth credential sharing The setup script copies `auth-profiles.json` from the main agent to the relay agent. This is required because OpenClaw agents have isolated auth — without shared credentials, the relay agent cannot authenticate with any model provider and will silently fail. The script asks for confirmation before copying. ### 2. Session ID regex patch (temporary) OpenClaw's session ID validator rejects `:` and `+` characters that WhatsApp phone-number routing generates (e.g. `agent:wa-relay:whatsapp:+15551234567`). The setup script patches the `SAFE_SESSION_ID_RE` regex in OpenClaw's dist files to allow these characters. This is a known bug (openclaw/openclaw#16211) with an open fix (PR #16531). Once merged, this patch becomes unnecessary and can be reverted. The script creates `.bak` backups and asks for confirmation before patching. ### 3. Main agent SOUL.md modification The setup script appends a "Relay de WhatsApp" section to the main agent's SOUL.md so it knows how to handle forwarded messages. Review the added section after setup.

Frequently asked questions