How to Turn a Napkin Sketch into Concept Art with OpenClaw
Turn a Napkin Sketch into Concept Art with OpenClaw and ToolRouter. Batch concept art generation across a full cast, environment set, or prop library.
Tool
OpenClaw is the right choice when you have a full set of character, environment, or prop sketches to render for a project. Batch all sketches and get a complete concept art set for the pitch or pre-production review.
Connect ToolRouter to OpenClaw
1Install the CLI
npm install -g toolrouter-mcp2Call tools directly from OpenClaw
toolrouter-mcp call web-search search --query "AI tools"
toolrouter-mcp toolsSteps
Once connected (see setup above), use the Sketch to Render tool:
- Build your input list — one sketch per row with the style and context description for each.
- Run `render` via sketch-to-render across all sketches in the batch.
- Review the full set and flag any concepts that need a second pass.
- Deliver the complete concept art set matched by concept reference for the pre-production review.
Example Prompt
Try this with OpenClaw using the Sketch to Render tool
Use sketch-to-render to render all twelve character sketches for this animated series pilot. Apply a consistent semi-realistic style with warm palettes and expressive features. Match output filenames to the character reference names.
Tips
- A consistent style applied across all characters in a batch gives the cast visual coherence from the outset.
- Match filenames to character reference names so the delivery stays organized through the pre-production process.
- Run the full cast in one batch so the art director can review visual relationships between characters.