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name: knods description: Build and modify Knods visual AI workflows using the OpenClaw Gateway polling protocol. Use when Knods sends polling payloads with fields like messageId/message/history and responses must be streamed back as delta chunks with optional [KNODS_ACTION] JSON blocks in assistant text. Includes a packaged bridge runtime and installer for persistent polling. metadata: openclaw: emoji: "🔌" homepage: "https://github.com/alesys/openclaw-skill-knods" os: ["linux"] requires: bins: ["python3", "bash", "openclaw", "systemctl"] env: ["KNODS_BASE_URL"]

Knods

Overview

Handle Knods chat turns that request new flows or edits on a visual canvas. Parse Knods polling payload messages, generate assistant text, and include [KNODS_ACTION]...[/KNODS_ACTION] blocks when the canvas should change.

Workflow

1. Parse incoming payload fields.

• Treat message as the primary request.
• Use history for continuity.
• On first turn in a conversation, expect prepended context in message describing node types and action rules.
• Use messageId to map all response chunks to the correct message.

2. Choose whether to emit a canvas action block.

• Use addNode for single-node additions.
• Use addFlow for multi-node workflows or any request requiring edges.
• If the user only asks a question, respond with normal text and no action block.

3. Build strict action JSON.

• Wrap each action exactly as:
  • [KNODS_ACTION]{"action":"addNode",...}[/KNODS_ACTION]
  • [KNODS_ACTION]{"action":"addFlow",...}[/KNODS_ACTION]
• For addFlow, ensure every edge source and target references an existing node id.
• Always end flows with an Output node.
• Never connect two generator nodes directly; route through Output or through appropriate input/output structure.
• Use stable node IDs (for example input_1, image_1, output_1) so follow-up edits are easy.
• Avoid unknown keys in action JSON.

4. Stream response back to Knods.

• Send assistant text as delta chunks to /respond for the same messageId.
• Send {"messageId":"...","done":true} when complete.
• Keep first chunk quick to avoid timeout perception.

Output Rules

• Return normal assistant text; do not wrap the full reply in a custom envelope.
• Include [KNODS_ACTION]...[/KNODS_ACTION] inline only when a canvas mutation is intended.
• Do not mention internal polling URLs/tokens in user-facing text.
• Keep action JSON valid and compact.

Flow Design Heuristics

• Build the smallest flow that satisfies the request.
• Prefer node types listed in the first-message context when provided.
• Default catalog (when context is absent): ChatGPT, Claude, Gemini, GPTImage, FluxImage, FalAIImage, Veo31Video, WanAnimate, TextInput, ImagePanel, Dictation, Output.
• Add initialData only when user intent clearly implies parameters.
• If one generator must feed another, route through Output.
• When node catalog is unknown, make a best-effort choice and clearly state assumptions.

Gateway Behavior Constraints

• Poll interval target: about 1-2 seconds.
• Message claim timeout: about 2 minutes.
• Always preserve messageId across all chunk posts for a turn.
• Gateway auth uses gw_... token via query parameter token; never require Supabase JWT in this flow.

Runtime Operations

When running a persistent poller service/process:

• Support either configuration style:
  • KNODS_BASE_URL already includes /updates?token=...
  • or KNODS_BASE_URL points to connection base and token is supplied separately (KNODS_GATEWAY_TOKEN)
• Derive /respond from the same connection root as /updates.
• Log handled messageId values and transport errors for debugging.

Packaged Runtime (required)

This skill ships the runtime bridge and installer:

• scripts/knods_iris_bridge.py
• scripts/install_local.sh

Install/deploy from the skill folder:

bash /home/rolf/.openclaw/skills/knods/scripts/install_local.sh

The installer deploys:

• ~/.openclaw/scripts/knods_iris_bridge.py
• ~/.config/systemd/user/knods-iris-bridge.service

Then runs:

• systemctl --user daemon-reload
• systemctl --user enable --now knods-iris-bridge.service

Environment Variables

Set these in ~/.openclaw/.env:

• Required:
  • KNODS_BASE_URL
• Required when KNODS_BASE_URL does not already include ?token=...:
  • KNODS_GATEWAY_TOKEN
• Optional:
  • OPENCLAW_AGENT_ID (default: iris)
  • OPENCLAW_BIN (default: openclaw on PATH)

Service Operations

• Status:
  • systemctl --user status knods-iris-bridge.service
• Restart:
  • systemctl --user restart knods-iris-bridge.service
• Logs:
  • journalctl --user -u knods-iris-bridge.service -f

Config Change Lifecycle (required)

After changing gateway URL/token env values, restart the running bridge process so it reloads config.

• Generic service form:
  • systemctl --user restart <knods-bridge-service>
• Generic process form:
  • stop old process
  • start poller again with updated env

Do not assume env changes are picked up live without restart.

Reference

Read references/protocol.md for canonical polling endpoints, payload schemas, and action examples.