Generate or edit images via Gemini 3 Pro Image (Nano Banana Pro).
74
66%
Does it follow best practices?
Impact
94%
7.23xAverage score across 3 eval scenarios
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./openclaw/skills/nano-banana-pro/SKILL.mdQuality
Discovery
32%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
The description is minimal—it identifies the core capability (image generation/editing) and the specific tool/model used, but lacks a 'Use when...' clause, detailed capability listing, and sufficient trigger terms. It would benefit significantly from explicit trigger guidance and more specific action descriptions to help Claude select it appropriately from a pool of skills.
Suggestions
Add an explicit 'Use when...' clause with trigger scenarios, e.g., 'Use when the user asks to generate, create, or edit images, photos, or illustrations using AI image generation.'
Expand trigger terms to include natural variations like 'create image', 'modify photo', 'picture', 'illustration', 'AI-generated image', 'image editing'.
List more specific capabilities beyond 'generate or edit', such as style application, text-to-image, image modification, or any unique features of the Gemini 3 Pro Image model.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (image generation/editing) and two actions (generate, edit), but doesn't list more specific capabilities like style transfer, inpainting, resizing, format conversion, etc. | 2 / 3 |
Completeness | Describes what it does (generate or edit images via a specific model) but completely lacks a 'Use when...' clause or any explicit trigger guidance, which per the rubric should cap completeness at 2, and since the 'what' is also thin, this lands at 1. | 1 / 3 |
Trigger Term Quality | Includes 'generate' and 'edit images' which are natural terms, plus the model name 'Gemini 3 Pro Image' and 'Nano Banana Pro' which could help with specific requests. However, it misses common variations like 'create image', 'modify photo', 'picture', 'illustration', 'AI image generation'. | 2 / 3 |
Distinctiveness Conflict Risk | The specific model name 'Gemini 3 Pro Image (Nano Banana Pro)' adds some distinctiveness, but 'generate or edit images' is broad enough to overlap with other image-related skills. The model name helps but the action scope is generic. | 2 / 3 |
Total | 7 / 12 Passed |
Implementation
100%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is an excellent, lean skill that provides clear, executable commands for all supported use cases. It assumes Claude's competence, avoids unnecessary explanation, and includes practical notes about filenames, resolution options, and behavioral constraints. The structure is clean and easy to scan.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Every line serves a purpose. No unnecessary explanations of what Gemini is or how image generation works. The notes section is tight and informative without padding. | 3 / 3 |
Actionability | Provides fully executable, copy-paste-ready bash commands for all three use cases (generate, edit, multi-image). API key configuration is specific with exact paths and variable names. | 3 / 3 |
Workflow Clarity | This is a simple, single-purpose skill (run a script with different flags). The three usage patterns are clearly distinguished, and the notes section provides important behavioral constraints (don't read image back, use timestamps). No destructive/batch operations requiring validation loops. | 3 / 3 |
Progressive Disclosure | For a skill under 50 lines with a single task, the content is well-organized into logical sections (generate, edit, multi-image, API key, notes) without needing external references. The script itself handles complexity, keeping the skill lean. | 3 / 3 |
Total | 12 / 12 Passed |
Validation
72%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 8 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
metadata_version | 'metadata.version' is missing | Warning |
metadata_field | 'metadata' should map string keys to string values | Warning |
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 8 / 11 Passed | |
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Table of Contents
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