Fix Figma Weave API Key Errors (401 & 403)

When setting up or running Figma Weave, authentication failures are common. These usually manifest as an HTTP 401 Unauthorized or an HTTP 403 Forbidden error during initialization or when pulling files.

A 401 error means Figma does not recognize your credentials, while a 403 error means Figma recognizes your identity but your account or token lacks the required permissions to access the specific file, team, or project.

This independent troubleshooting guide provides direct steps to diagnose and correct authentication issues within your Figma Weave integrations.

Understanding 401 vs 403 in Figma Weave

Before changing code, narrow down the exact cause based on the error payload returned by your console: * 401 Unauthorized: This indicates an issue with the actual token value, token expiration, or formatting of the authorization header. The token is either invalid, revoked, or misspelled. * 403 Forbidden: This indicates a scope mismatch or access control restriction. Your token is valid, but it does not have read/write access to the specific file key you are requesting, or your organization-level security policies block third-party API tools.

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Step-by-step troubleshooting for Weave credentials

1. Verify and regenerate your Personal Access Token (PAT)

Most developer-level auth failures happen because a Personal Access Token has expired or was revoked.

1. Open Figma in your web browser.
2. Navigate to your Account Settings (click your profile icon in the top-right, then select Settings).
3. Scroll down to the Personal access tokens section.
4. Check if your current token has expired. If you are unsure, click Create a new personal access token.
5. Give it a descriptive name (e.g., "Weave CI Build") and select the required scopes (typically file_read at minimum for data fetching, or file write permissions if you are pushing properties back).
6. Copy the newly generated token immediately. *Note: Figma will never display this token to you again.*

2. Correct authentication header formatting

If you are using raw HTTP calls instead of an SDK wrapper, verify the structural integrity of your authorization header. Figma expects the token to be formatted specifically.

• Personal Access Tokens (PAT): Must be sent in the X-Figma-Token header.
• Key: X-Figma-Token
• Value: figd_your_actual_token_string
• OAuth2 Tokens: If your integration uses an OAuth flow, you must use the standard Authorization header.
• Key: Authorization
• Value: Bearer your_oauth_access_token

*Do not mix these up.* Using X-Figma-Token with an OAuth token, or using the word Bearer before a Personal Access Token, triggers a 401 Unauthorized error.

3. Audit environment variable loading

Many CI/CD and terminal environments fail to load API keys correctly due to quoting errors, local shell environments, or system permission rules.

1. Ensure your local .env or system variables do not include spaces or surrounding quotes unless explicitly required by your framework:
2. Correct: FIGMA_WEAVE_TOKEN=figd_abcdefg123456
3. Incorrect: FIGMA_WEAVE_TOKEN = "figd_abcdefg123456"
4. If you are running builds within docker or containerized pipelines, make sure the variables are explicitly passed down to the container run scope in your YAML config files.
5. Verify your integration code is referencing the variable correctly (e.g., process.env.FIGMA_WEAVE_TOKEN in Node environments).

4. Troubleshoot 403 Forbidden permission scopes

If you are certain your token is valid but receive a 403 error when accessing a specific design resource:

1. Check team permission settings: Verify that the account that created the PAT has active access to the Figma team project. If an employee leaves the company or is downgraded to a viewer-restricted role, their PAT automatically loses the ability to fetch files, generating a 403 error.
2. Validate the file key: Ensure the file key in your Weave config is correct. The file key is the alphanumeric string found in your Figma file URL: figma.com/file/FILE_KEY_HERE/filename. If this key contains a typo, Figma will return a 403 or 404 error.
3. Confirm Enterprise restrictions: Some enterprise organizations restrict third-party API integrations entirely. If you are on an Enterprise plan, ask your Figma administrator if "Third-party app access" is blocked or requires whitelisting.

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When to escalate

If you have verified that your token is freshly generated, has correct permissions, uses the proper header, and you still receive constant 401 or 403 errors, your network environment may be modifying headers.

Verify if your company's network uses an SSL/TLS intercepting proxy or VPN that modifies or strips custom headers like X-Figma-Token. Try running your sync command from an external network connection. If the error persists, contact your internal IT administrator to inspect the proxy rules or consult Figma's API status dashboard for general auth service outages.