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Documentation Index

Fetch the complete documentation index at: https://docs.etherscan.io/llms.txt

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May 2026

[Upcoming Change] Reduced Maximum Records Per Request on the Free API Tier

Updated: May 1, 2026Effective date: July 1, 2026The maximum number of records returned per request will be reduced from 10,000 to 1,000 for Free tier API users. This change affects the following endpoints:What you need to do: Update your integration for the above endpoints to paginate records in batches of 1,000 or fewer.Note: If your application does not use any of the endpoints listed above, no action is required.

[Upcoming Change] Get Internal Transactions by Block Range Endpoint Moving to Pro Plans

Updated: May 1, 2026Effective date: July 1, 2026Get Internal Transactions by Block Range will be moved to Pro endpoint.What you need to do: If your application relies on this endpoint, check your plan tier and upgrade if needed, or update your integration.Note: If your application does not use any of the endpoints listed above, no action is required.
April 2026

Scroll Mainnet & Sepolia Testnet deprecation

Scroll Mainnet (chainid: 534352) and Scroll Sepolia Testnet (chainid: 534351) API support will be deprecated effective April 16, 2026.After this date, API requests to these chains will no longer be supported.
February 2026

MemeCore Formicarium Testnet migration

MemeCore Formicarium Testnet (chainid: 43521) has migrated to Insectarium Testnet (chainid: 43522) effective February 25, 2026.API requests should now use the Insectarium Testnet (chainid: 43522) endpoint.

Swell Mainnet & Testnet deprecation

Swell Mainnet (chainid: 1923) and Swell Testnet (chainid: 1924) API support has been deprecated effective February 25, 2026.API requests to these chains are no longer supported.