Evaluate Diagram

Evaluate a generated diagram against a human reference using PaperBanana's VLM-as-Judge scoring.

Inputs

• Required: $ARGUMENTS[0] — path to the generated image
• Required: $ARGUMENTS[1] — path to the human reference image
• Optional: User-provided context file path and figure caption (collected in procedure)

Scope Constraints

• Read ONLY user-specified image files and optional context file
• Do NOT read, write, or reference home directory dotfiles (~/.ssh, ~/.env, etc.)
• Do NOT make network requests — the MCP tool handles remote communication
• Do NOT install packages or modify system state
• Output ONLY evaluation scores — do not include raw file contents