Sunset of Blast Swapping Support
Posted: October 7, 2026 | Effective: October 28, 2026
We are sunsetting swapping support for the Blast network (chain id 81457) on October 28, 2026.
What is changing?
Starting October 28, 2026, Uniswap will no longer support swapping on Blast. Quote requests for Blast will return a 404 with errorCode: UnsupportedChainError (see Troubleshooting Common Errors).
Why is this changing?
The Blast network has announced their intention to shut down. We are ending support for swapping on Blast in line with their team.
What do I need to do?
If your integration requests quotes or swaps on Blast, stop those requests and move funds to an alternative supported chain before October 28, 2026.