0x Swap API on Solana: open beta for builders

0x (0x.org) opened the Swap API on Solana to open beta on 4 August 2026. Solana is the first non-EVM network on the product. You get an API key from the 0x Dashboard, call one Solana endpoint, and receive routing plus instructions to fold into your own transaction pipeline.

Docs home still brands 0x as a multi-chain trading API (EVM, Solana, Tron, HyperCore). For Solana builders the practical surface is the SVM / Solana Swap API section — mainnet beta only, interfaces still marked as able to change.

Click to zoom

What you get (and what you keep)

0x does not submit the transaction, pick priority fees, or set compute budget. That is intentional: volume teams already own landing and CU tuning. The API returns the economic route and the instruction list; you assemble, sign, and send with your usual stack (Jito, SWQoS, Helius, etc.).

Endpoint shape

Blog and docs center on a single call:

POST /solana/swap-instructions
Authorization: (API key from dashboard.0x.org)

→ quote
→ full route plan
→ instructions to include in your VersionedTransaction
→ ALT addresses when the route needs them

Parameters called out for Solana workflows:

• slippage_bps — default 50 bps (0.5%)
• reserve_transaction_bytes — leave room in the same atomic tx for your own instructions (fees, position open/close, etc.)
• recipient — swap output to an address other than the taker (“swap and send”)

Token coverage on one path: standard SPL, native SOL / wSOL without a separate wrap step in the integrator flow, and Token-2022 (routing called out as live from July 2026 for extensions-ready venues — stables, tokenized equities, launchpad tokens without a code change for that path). Enabled venue list lives in the enabled sources API reference.

Why they push “settled” quality

0x’s marketing angle is execution that lands close to the quote, not only a flashy mid-price. Their published beta claims include simulation survival around 97.8% and low real-world revert rate (~2.2%), with emphasis on large size ($10k–$100k) and pairs where quote-to-fill drift is usually worst. Treat those as vendor metrics — verify against your pairs and size before committing production traffic.

Closed-beta references: Kamino (swaps inside lend / position flows) and Titan (meta-aggregator competing on settled wallet amount). 0x’s own Matcha Meta meta-aggregator also ran Solana volume in beta.

Fees and monetization

• Introductory offer: zero 0x swap fees on Solana during the promo window (confirm current pricing on dashboard / sales).
• App monetization: percentage fee on either side of the swap, one or more recipients in the same request (app + referrer split without a second fee transfer).

Where it sits vs other Solana aggregators

For multi-chain products already on 0x EVM, Solana is an add-on under one commercial and ops relationship. For Solana-only apps, 0x is another route provider to benchmark on fill quality, Token-2022 coverage, and fee terms — not an automatic replacement for Jupiter.

Get started

1. Create an account / API key at dashboard.0x.org
2. Read Solana Swap API introduction and Create Swap Instructions
3. Check enabled sources for your mints / venues
4. Integrate: call API → build VersionedTransaction with returned ixs + ALTs → your fee/CU/submit path
5. Product page: 0x.org/products/solana

Resources

• Announcement (4 Aug 2026)
• Docs — Solana Swap API · docs llms.txt
• 0x organisation on DevRels
• Related: Solana aggregators for developers

Summary

0x Swap API on Solana is open beta: one instructions endpoint, mainnet, SPL + native SOL + Token-2022, ALTs and reserved bytes for your own atomic logic, no forced submission path. Useful if you already run 0x on EVM or want another execution-focused router beside Jupiter and meta-aggregators — validate fills and venue coverage on your pairs before production.