nano-banana-pro

Generate or edit images via Gemini 3 Pro Image (Nano Banana Pro).

Quality

78%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

Securityby

Low

Low-risk findings worth noting

Fix and improve this skill with Tessl

tessl review fix ./skills/nano-banana-pro/SKILL.md

Quality

Content

100%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The content is a well-structured, lean, and fully actionable guide that assumes Claude's competence and covers generate/edit/compose workflows with concrete commands.

Dimension	Reasoning	Score
Conciseness	The body is lean with no padding or explanations of concepts Claude already knows; every line (commands, flags, notes) earns its place.	3 / 3
Actionability	It provides fully executable, copy-paste-ready uv commands with concrete flags for generate, edit, and multi-image compose operations.	3 / 3
Workflow Clarity	This simple single-purpose skill presents three unambiguous usage patterns with clear operational notes; no fragile multi-step validation loop is required for image generation.	3 / 3
Progressive Disclosure	Under 50 lines with no need for external references, it uses well-organized sections and a real bundled script path ({baseDir}/scripts/generate_image.py, verified present).	3 / 3
	Total	12 / 12 Passed

Description

57%

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 clear and specific about its niche but lacks an explicit use-when trigger clause, capping completeness. It is concise and distinctive but would benefit from natural-language triggers.

Suggestions

Add an explicit "Use when..." clause listing natural triggers (e.g. when the user asks to generate, edit, or combine images).

Include common phrasings such as pictures or photos to broaden trigger coverage.

Dimension	Reasoning	Score
Specificity	"Generate or edit images via Gemini 3 Pro Image" names the domain and two actions (generate, edit) but does not enumerate a comprehensive set of concrete capabilities.	2 / 3
Completeness	It states what the skill does but provides no explicit "Use when..." trigger guidance, which per the rubric caps completeness at 2.	2 / 3
Trigger Term Quality	"images" and the product name are relevant natural terms, but common variations users might say (e.g. pictures, photos) are absent.	2 / 3
Distinctiveness Conflict Risk	The specific "Gemini 3 Pro Image (Nano Banana Pro)" niche is clearly distinguishable and unlikely to trigger for unrelated image skills.	3 / 3
	Total	9 / 12 Passed

Validation

81%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 13 / 16 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	13 / 16 Passed

Repository: Bitterbot-AI/bitterbot-desktop
Path: skills/nano-banana-pro/SKILL.md
Commit: e73c717

Reviewed: about 16 hours ago

Table of Contents

Discovery Implementation Validation

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.