# POST /v0/transactions is deprecated

Helius API deprecated POST /v0/transactions without giving a shutdown date yet.

The provider has deprecated the POST /v0/transactions endpoint without a shutdown date. Existing endpoints continue to operate, but this interface will no longer receive new parser types or feature updates before requests ultimately fail. The change impacts any integration making calls to this transaction lookup path.

## What to use instead

Fetch single transactions using the getTransaction RPC method on mainnet.helius-rpc.com instead.

- API: Helius API (api.helius.xyz)
- Kind: Endpoint removal
- Takes effect: no date given yet
- Calls after that day: fail
- Calls it hits: `POST /v0/transactions`
- Source: [Announcement](https://www.helius.dev/docs/faqs/enhanced-transactions)
- Verified: October 26, 2026, against Helius API's own pages
- Page: https://www.okapi.bot/providers/helius-api/breaking-changes/post-v0-transactions-is-deprecated/

## Helius API's words

> The Enhanced Transactions API is deprecated and no longer receiving new parser types or feature work. Existing endpoints continue to operate

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent