harnesses

Use Postward from ZCode

Connect ZCode to Postward, install Docker, and expose local Creative editing tools.

15 minutes

Intermediate

ZCode users

Both execution

What You Will Finish With

ZCode can use codebase context, local media tools, and the remote Postward campaign workflow together.

Add the remote MCP

Configure one Streamable HTTP server named postward.

Server name: postward
Transport: Streamable HTTP
URL: https://postward.cc/mcp
Authentication: OAuth 2.1 with PKCE
Static API key: none

2
Authorize and verify
Ask the agent: Check my Postward activation status and tell me the next incomplete step. A successful get_activation_status call proves transport, OAuth, and workspace access.
3
Prepare Docker
Install Docker for your operating system, start it, then confirm the Creative image can be pulled.
```
docker version
docker pull ghcr.io/postward-cc/creative-mcp:latest
```

Add the local Creative server

Use ZCode's local stdio MCP configuration and preserve the named output volume.

docker run -i --rm -v postward-creative-output:/tmp/postward-creative ghcr.io/postward-cc/creative-mcp:latest

5
Try a safe local edit
Provide a local video and ask ZCode to inspect available tools before trimming or transcoding it. Upload to Postward only when you want the result in a campaign.

Where to go next

Ask my agent

Copy a ready prompt for this tutorial and paste it into any agent connected to Postward.

Preview the prompt

Follow the Postward tutorial "Use Postward from ZCode".

Outcome: ZCode can use codebase context, local media tools, and the remote Postward campaign workflow together.
Prerequisites to verify first: ZCode with MCP support; Docker; A Postward account.

Steps:
1. Add the remote MCP: Configure one Streamable HTTP server named postward.
2. Authorize and verify: Ask the agent: Check my Postward activation status and tell me the next incomplete step. A successful get_activation_status call proves transport, OAuth, and workspace access.
3. Prepare Docker: Install Docker for your operating system, start it, then confirm the Creative image can be pulled.
4. Add the local Creative server: Use ZCode's local stdio MCP configuration and preserve the named output volume.
5. Try a safe local edit: Provide a local video and ask ZCode to inspect available tools before trimming or transcoding it. Upload to Postward only when you want the result in a campaign.

First inspect my environment and existing configuration, and verify each prerequisite before acting.
Follow the current Postward documentation rather than assuming tool names.
Do not replace unrelated configuration.
Verify the result and report exactly what changed.

Prerequisites

ZCode with MCP support
Docker
A Postward account

Works With

ZCode