Use Asana through Slack with Giga.

My Settings → Apps → Manage Developer Apps → Create personal access token.

Structured tool access via the Model Context Protocol.

Asana personal access token Create a personal access token in the Asana developer console. In the token flow, give it a description, copy the token, and send it as Authorization: Bearer <token>. Asana documents PATs as the quickest way to authenticate to the REST API, and also requires a Service Account's PAT for audit log access.

Secure OAuth — log in and authorize, no keys to copy.