SIM API Service Addendum
Last updated: May 13, 2026
General
This Sim API Service Addendum applies in addition to the General Terms and Conditions for use of the SimAPI.
API Keys
After the User’s subscription to a Subscription Plan, Dune will provide User with applicable API Keys for the User’s use of the Services.
API Keys are credentials used to identify the User and authorize their use of the API Services, and must be treated as confidential. Users must not embed API Keys in public repositories, client-side code, public dashboards, or other publicly accessible locations, and shall not sell, transfer, sublicense, or disclose the API Keys to any third party.
User is solely responsible for maintaining adequate security and control of any API Keys issued to User by Dune. User is liable for any actions or omissions using API Keys. If User believes or has actual knowledge that its API Keys were compromised, User shall notify Dune immediately and Dune will suspend or revoke such API Keys.
Dune may also temporarily suspend or revoke User API Keys at any time for breach of the Terms of Service, and if Dune believes, in its sole reasonable discretion, that the API Keys have been compromised or User’s use of the Services is not in compliance with the Terms of Service or otherwise represent a misuse or threat to Dune.
Dune may monitor API usage for security, abuse prevention, service integrity, billing, and compliance with the Terms.
API Usage and Billing
Access to the sim API, including limits on requests per second (RPS) and total monthly usage ("quota"), is defined in our Subscription Plans, available on our pricing page.
Acceptable Use of API
Users may not use the Service, directly or indirectly, in any manner that could: (i) be a substitute for the Service by a third party, (ii) affect Dune's ability to realize revenue in connection with the Service, or (iii) compete with Dune's business.
Dune reserves the right to determine whether a use of the Service fails to constitute acceptable use of the API.
Usage Data
Dune may display API usage on public resources in the Dune Application Service for purposes of content discovery, ranking and relevance. Dune will not publicly display any kind of API usage on private resources.