Fix: Figma Weave API Key Not Working & Auth Errors

When integrating Figma Weave into your development workflow, encountering an "API key not working" or validation failure is a common bottleneck. This issue typically stems from incorrect token scopes, cached environment variables, or enterprise-level security restrictions.

This step-by-step troubleshooting guide will help you isolate the cause of authorization errors and restore your Figma Weave API connection.

Step 1: Verify Key Generation and Permissions

Before troubleshooting your local code, ensure the API key itself is valid and has the correct permissions. Figma Weave requires specific scopes to read and write to your design files.

1. Log in to your Figma account and navigate to Settings > Account.
2. Scroll down to the Personal access tokens section.
3. Ensure you have generated a token specifically for your Weave integration. If you are reusing an old token, it may have expired or lacks the required permissions.
4. When creating a new token, verify that the scopes match Weave's requirements (typically file_variables:read, files:read, and library_components:read).
5. Copy the newly generated token immediately. Once you close the window, you cannot retrieve or view the plain-text token again.

Step 2: Check for Environment Variable Truncation

Many developer setups load API keys via a .env file or hosting provider dashboard (such as Vercel, Netlify, or Docker). A common error is that the key is truncated, wrapped in malformed quotes, or cached in the runtime environment.

1. Open your local configuration file (e.g., .env or .env.local).
2. Inspect the Figma Weave API key line. Ensure there are no spaces, trailing slashes, or special characters appended to the end of the key.
3. If your key contains special characters, try wrapping it in single quotes: FIGMA_WEAVE_KEY='fig_...'.
4. Restart your local development server completely. Most frontend frameworks (like Next.js, Vite, or Node.js) do not hot-reload changes made to .env files; a full terminal restart is required.
5. If you are deploying to a cloud server, trigger a clean redeploy without using cached builds to ensure the host pulls the updated key.

Step 3: Run a Raw API Test via cURL

To isolate whether the issue lies within your codebase/SDK integration or with the Figma API gateway itself, run a direct HTTP request using cURL in your terminal.

Run the following command, replacing YOUR_API_KEY with your actual token:

`bash curl -H "X-Figma-Token: YOUR_API_KEY" https://api.figma.com/v1/me `

• If this request returns a 200 OK status with your user account details, your API key is fully functional. The issue lies within your local application code, SDK initialization configs, or network routing.
• If this request returns a 401 Unauthorized or 403 Forbidden error, the key is invalid or has been revoked on Figma's servers. Return to Step 1 and generate a fresh key.

Step 4: Resolve Organization and IP Restrictions

If your team uses a Figma Enterprise or Professional plan, workspace administrators may have strict policies regarding API usage and third-party tools.

1. Check if your Figma organization restricts personal access tokens (PATs) or third-party integrations. Admin users can disable these permissions globally, which overrides individual developer keys.
2. If your organization uses Single Sign-On (SSO), ensure your active session has not expired, as this can invalidate associated API tokens.
3. Check if your development server is behind a corporate proxy or VPN. If Figma’s API gateways block requests from flagged or unrecognized IP ranges, your integration will fail to connect even with a valid key. Try disabling your VPN or configuring your proxy settings to bypass Figma's API endpoints.

When to escalate

If you have confirmed your API key works via a direct cURL call but your local development environment still throws authentication errors, the issue is likely a bug in the specific SDK wrapper, localized network firewalls, or custom DNS configurations. Reach out to your internal IT administrator to verify if outgoing API requests are being blocked, or check the developer platform console where your Figma Weave app is registered to look for active outages or deprecation notices.