OpenClaw Canva Skill: Generate Designs Automatically with AI

Generating 50 social media graphics by hand is a half-day job. With OpenClaw and Canva's API, it's a five-minute workflow. The Canva skill lets your agent update templates, swap text and images, and export production-ready assets automatically. Here's how to set it up.

What the Canva Skill Does

Canva's Connect API, launched in 2024, exposes design creation and export capabilities to external applications. OpenClaw's Canva skill wraps this API into skill actions you can chain into any workflow.

Core capabilities:

• Template-based design creation — create new designs based on existing templates
• Text element updates — replace text fields in templates with dynamic content
• Asset export — export designs as PNG, JPEG, PDF, or SVG
• Brand Kit access — reference your brand colors, fonts, and logos in generated designs

Canva API Access

Go to canva.com/developers and create a new integration. Set the OAuth redirect URI to https://localhost:8080/callback for development. Request the scopes: design:content:read, design:content:write, design:meta:read, asset:read, asset:write.

Run the OAuth flow to get your access token. Store it in OpenClaw's secrets manager.

# Canva credentials for OpenClaw
CANVA_CLIENT_ID=your_app_client_id
CANVA_CLIENT_SECRET=your_client_secret
CANVA_ACCESS_TOKEN=your_oauth_access_token

OpenClaw Configuration

skills:
  canva:
    enabled: true
    client_id: ${CANVA_CLIENT_ID}
    client_secret: ${CANVA_CLIENT_SECRET}
    access_token: ${CANVA_ACCESS_TOKEN}
    default_export_format: png
    export_quality: high

Automation Workflows

The classic use case is bulk social media card generation. Given a list of post titles, generate a branded image for each:

skills:
  generate_social_cards:
    trigger: event(manual)
    actions:
      - skill: canva
        action: create_from_template
        template_id: "your-template-id"
        updates:
          Title: "{{event.post_title}}"
          Date: "{{event.post_date}}"
          Category: "{{event.category}}"
      - skill: canva
        action: export_design
        design_id: "{{canva.design_id}}"
        format: png
        save_to: "exports/{{event.post_slug}}.png"

For a weekly newsletter header, trigger on schedule and pull the week's top article title dynamically:

skills:
  weekly_header:
    trigger: cron(0 6 * * 1)
    actions:
      - skill: supabase
        action: query
        table: articles
        order: views.desc
        limit: 1
      - skill: canva
        action: create_from_template
        template_id: "newsletter-header-template"
        updates:
          Title: "{{supabase.results[0].title}}"

Common Mistakes

Using the wrong template ID is the most common first-run failure. Template IDs are found in the Canva URL when viewing a template: https://www.canva.com/design/TEMPLATE_ID/view.

• Not naming template elements — unnamed text elements get auto-generated IDs that change between template versions. Name your elements in the Canva editor before connecting OpenClaw.
• Exporting before the design finishes rendering — add a wait step after create_from_template before exporting. The API can return a design ID before rendering is complete.
• Ignoring export file size — high-quality PNG exports can be 5-10MB per design. For bulk workflows, use JPEG or lower quality settings to reduce storage and transfer costs.
• Forgetting token refresh — Canva OAuth tokens expire. Implement refresh token rotation in the skill config or your tokens will stop working after expiry.

Frequently Asked Questions

Does Canva have a public API for automation?
Canva launched its Connect API in 2024. It allows creating and updating designs, exporting assets, and managing brand templates via OAuth 2.0.

Can OpenClaw create new Canva designs from scratch?
The Connect API supports creating designs from templates. Template-based creation is the recommended approach for automated workflows.

Can OpenClaw export Canva designs as PNG or PDF?
Yes. The export action supports PNG, JPEG, PDF, SVG, and MP4. Specify format and quality in the skill action config.

Does the Canva skill work with Brand Kit?
Yes. If your Canva account has a Brand Kit, the skill can reference brand colors, fonts, and logos when creating designs from templates.

Is the Canva API free to use?
The Connect API is included with Canva for Teams plans. Individual Pro accounts have limited access. Check Canva's current pricing as it changes.

Can OpenClaw update text in an existing Canva template?
Yes. The skill finds text elements by their element ID or name and updates the content. This is the most common automation pattern for bulk design generation.