Skill: image-alttext

Version: 1.0.0

Generate accessibility-optimized alt text for images.

Follows WCAG guidelines for screen reader compatibility.

name: image-alttext version: 1.0.0 description: Generate accessibility-optimized alt text for images (WCAG compliant)

Credentials

credentials:

• name: OPENAI_API_KEY required: false description: OpenAI API key

Skill inputs

inputs:

• name: image_url type: string required: true description: URL of the image to describe
• name: context type: string required: false description: Additional context about where the image appears
• name: max_length type: integer default: 125 description: Maximum alt text length (WCAG recommends 125 chars)

Skill outputs

outputs:

• name: alt_text type: string description: Accessibility-optimized alt text
• name: metadata type: object description: Processing metadata

Backend options

backends:

• name: openai type: remote requires: [OPENAI_API_KEY]
• name: ollama type: local models: [llava, bakllava]

Expanso components used

components: inputs: - stdin - http_server processors: - mapping - openai_chat_completion - log outputs: - stdout - sync_response