# For integrators: what changed in the APIs

Pangea v3: every new launch, stock pairs and questions. Every launch since 2026-11-02 is a v3 launch, made by factory v3 on all five chains. This tab is everything new in v3: the factories, the fee hook, launch buys, stock pairs, the bridge price-gap fee, Solana, the security model, and plain-language questions and answers at the end. Bridging, routes and the APIs are in the V2 tab and hold for v3 except where this tab says otherwise.

- A v3 coin's send must name its minimum credited after the price-gap fee: `gap.minCreditedSource` from the quote. Without it the send is refused. [Bridging from code →](https://www.pangea.trade/app/docs?v=2#bridge-code)
- Quotes for a v3 coin carry `gap` (`estimate`, `free`, `held` or `unavailable`), and the delivery lines into Ethereum and Solana. [API →](https://www.pangea.trade/app/docs?v=2#api)
- Out of Solana, a `record` stage may come first: sign the price-record transaction, then ask again.
- A launch can carry launch buys, paid into the chain's launch-buys contract beforehand. [Launch API →](https://www.pangea.trade/app/docs?v=2#launch-api)
- A stock-paired launch is refused with `needsAck: "stocks"` until each warned chain is acknowledged in `stockAck`.

Part of the Pangea documentation, V3 (every new launch) tab: https://www.pangea.trade/app/docs.md