Files

zhi cb94464060 chore: initial scaffolding for SynthesisAgent.ClaudePlugin

Stdio MCP server registered as a Claude Code --channels source. Receives
inbound events from SynthesisAgent.OpenclawPlugin and emits
notifications/claude/channel to push them into the running Claude turn loop.
Forwards tools/call requests back to OpenClaw for execution.

Capability declaration uses experimental.claude/channel — required nesting
discovered 2026-05-14 against the official Anthropic discord plugin source.

2026-05-14 09:41:14 +00:00

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SynthesisAgent.ClaudePlugin

The Claude Code side of SynthesisAgent. A stdio MCP server that registers as a --channels plugin and bridges to SynthesisAgent.OpenclawPlugin.

What it does

Receives inbound messages from OpenClaw and emits notifications/claude/channel so Claude Code starts a new turn.
Receives the OpenClaw tool catalog at hello_ack time and exposes them as MCP tools.
Forwards every tools/call over the bridge for OpenClaw to execute.
Forwards Claude's permission_request notifications to OpenClaw, and surfaces the user's reply back.

Required env vars

Set by OpenclawPlugin when it spawns Claude:

Var	Example	Meaning
`SYNTHESIS_BRIDGE_URL`	`ws://127.0.0.1:18801/bridge`	Where to connect
`SYNTHESIS_BRIDGE_TOKEN`	`...`	Shared secret
`SYNTHESIS_OPENCLAW_SESSION`	`discord:alice`	This Claude process serves this session
`SYNTHESIS_CLAUDE_SESSION`	`<uuid>`	The Claude session UUID, for traceability

Spawn shape (done by OpenclawPlugin)

claude \
  --channels plugin:synthesis-claude@local \
  --resume "$SYNTHESIS_CLAUDE_SESSION" \
  --allowed-tools "Read Edit Bash mcp__synthesis__*" \
  --append-system-prompt-file ./session-context.md

TODO

Verify exact semantics of --channels plugin:foo@bar against the running Claude Code build.
Verify mcp.notification('notifications/claude/channel', ...) triggers a new turn (vs being silently accepted). May need to first land on claude/channel capability declaration.
Implement attachment download flow (download_attachment style) — currently passthrough.
Implement fetch_messages to query OpenClaw history.
Wire bun-types install in package.json.

Manual test (once OpenclawPlugin is wired up)

# Terminal 1: start OpenclawPlugin bridge server
openclaw  # with SynthesisAgent.OpenclawPlugin loaded

# Terminal 2: simulate the spawn manually
SYNTHESIS_BRIDGE_URL=ws://127.0.0.1:18801/bridge \
SYNTHESIS_BRIDGE_TOKEN=local-dev \
SYNTHESIS_OPENCLAW_SESSION=test:1 \
SYNTHESIS_CLAUDE_SESSION=$(uuidgen) \
claude --channels plugin:synthesis-claude@local

# Terminal 3: push a fake inbound message via OpenclawPlugin admin CLI
openclaw synthesis push --session test:1 --content "hello"

A successful run: Claude Code visibly starts a new turn in Terminal 2 reacting to "hello".

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