What has changed with Etherscan's API and why does it matter for developers? Etherscan recently moved its Gnosis Chain out of the free API tier. Previously, Etherscan provided free access to data from various blockchain networks. However, as of November 2025, the free API decreased its coverage to about 90% of the already supported chains. The primary reason for this reduction stems from increasing transaction speeds and heightened transaction volumes across networks, leading to unsustainable operational costs for Etherscan. Consequently, developers and applications relying on Gnosis Chain data must upgrade to paid tiers for ongoing access to the necessary functionalities.
What is the impact of Gnosis Chain’s deprecation? Gnosis Chain, identified by chain ID 100, has been specified to fall outside the free-tier API coverage. Even though endpoints for verified contracts, including source code and ABI data, will remain available at no cost, access to more extensive indexes—like transaction history, token transfers, and event logs—is now behind a paywall. To ease this transition, Etherscan has introduced a new Lite plan, which costs approximately 25% of the previous lowest paid tier.
Developers need to take immediate action regarding the Gnosisscan deprecation timeline. Etherscan plans to fully deprecate Gnosisscan on August 11, 2026. After that date, the remaining free-tier access points for Gnosis will redirect users to the Pro-tier subscriptions. This situation presents a critical decision point for any projects built on Gnosis Chain. They should either prepare for budget considerations around Etherscan’s paid plans or explore migrating to alternative indexers before the impending deadline.
What alternatives exist for Gnosis Chain developers? Blockscout, an open-source blockchain explorer, is emerging as a viable option for multichain indexing. It supports various EVM-compatible networks and the Gnosis community has maintained its own Blockscout instance. This means that developers now have options to consider when planning their path forward. Developers must audit applications that currently rely on Etherscan’s API for Gnosis Chain data. They’ll need to either subscribe to the Lite or Pro plan or integrate with alternatives like Blockscout before the deprecation takes effect. While the Lite plan offers a middle ground at reduced costs, teams should ensure it aligns with their specific endpoint needs and rate limits.