Integrations

ClankerContext can send context directly to your AI coding tool over a local HTTP connection. When you click Send, the extension exports the issue using your prompt template and delivers it over a local connection. Two integrations are supported: OpenCode and VS Code (Copilot Chat). All communication stays on your machine — nothing is sent to external servers.

OpenCode

Sends the exported markdown directly into an OpenCode chat session.

Prerequisites

• OpenCode installed
• OpenCode's server running (opencode web or opencode --port 4096)

Setup

1. Open the ClankerContext popup and click the gear icon to open Settings
2. The default OpenCode connection is pre-configured at localhost:4096
3. Click Select Session and pick the session for your project
4. If you have multiple projects, sessions are grouped by project

How messages are sent

When you click Send (or auto-send triggers), the extension exports the issue to markdown and sends it to OpenCode's local API as a new message in your selected session. The request includes a project directory header so OpenCode routes it to the correct project instance.

Message queuing

OpenCode supports message queuing. If your session is busy processing a previous request, the extension detects this and waits — auto-send only fires when the session is idle. This prevents interrupting work in progress.

VS Code (Copilot Chat)

Sends exported markdown into GitHub Copilot Chat in a VS Code window.

Prerequisites

• VS Code with the ClankerContext VS Code extension installed
• GitHub Copilot active in VS Code

Setup

1. Install the ClankerContext extension from the VS Code marketplace
2. Open the ClankerContext Chrome extension and click the gear icon to open Settings
3. The default VS Code connection is pre-configured
4. Click Select VSCode Window — the extension auto-discovers running VS Code instances by scanning local ports (41970–41979)
5. Pick the VS Code window for your project

How messages are sent

The VS Code extension runs a small local HTTP server. When you click Send, the Chrome extension sends the markdown directly to that server, which injects it into Copilot Chat. Each VS Code window gets its own port, so the extension knows exactly which window to target.

No message queuing

Unlike OpenCode, VS Code does not have message queuing or session status checking. Messages are sent immediately regardless of whether Copilot is currently processing. This means auto-send is disabled by default for VS Code connections.

Comparison

Feature	OpenCode	VS Code
Sends context to	Chat session	Copilot Chat
Default port	4096	41970–41979
Message queuing	Yes	No
Checks if busy before sending	Yes	No
Auto-send enabled by default	Yes	No
Companion extension required	No	Yes (VS Code extension)

Auto-Send

When enabled on a connection, issues are automatically sent after you log them — no need to click Send.

• Only the active connection auto-sends (you can have multiple connections but only one is active at a time)
• OpenCode: the extension checks whether the session is idle before sending. If it's busy, auto-send is skipped for that issue
• VS Code: sends immediately with no status check
• Toggle auto-send per connection in Settings
• Auto-send is independent of auto-copy-to-clipboard — both can be on simultaneously

Managing Connections

• Default connections for both OpenCode and VS Code are created on first install
• You can add additional connections with custom endpoints
• Set a connection as active to make it the target for the Send button and auto-send
• Only one connection can be active at a time
• Use the Test button to verify a connection is healthy (green = connected, red = unreachable)

Troubleshooting

• "Failed to fetch sessions" (OpenCode) — Make sure OpenCode's server is running: opencode web
• "No VSCode windows found" — Install the ClankerContext VS Code extension and make sure a VS Code window is open
• Send fails — Check the endpoint in Settings and verify the tool is running
• Auto-send isn't working — Verify auto-send is toggled on for the active connection. For OpenCode, the session must be idle

Next Steps

• Quick Start — Get started with ClankerContext in minutes
• Prompt Templates — Customize the markdown that gets sent to your tools
• Element Capture — How elements are captured across Fix, Modify, and Quick Select modes