Add June and July 2026 changelogs; drop Mode and Blast references - #272
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Adds changelog entries for the June and July 2026 release windows, covering the Robinhood Chain launch, exact-out general availability, RWA fee collection, and new liquidity sources. Mode (34443) and Blast (81457) were fully decommissioned across the Swap, Gasless, Cross-Chain, and Token APIs, so remove them from the Cross-Chain support matrix and from the AllowanceHolder Cancun chain lists in the FAQ, contracts page, and cheat sheet.
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Narrows both entries to the changes worth publishing externally and drops the Documentation sections. Removes an internal implementation detail from the Gasless breaking-change note. Fixes the supported-chains link to include the /docs path prefix.
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Aug 5, 2026
Drops entries whose underlying change only affected what 0x persists or configures internally, with no surface an integrator can observe: - Cross-chain trade plans for Solana and Tron origins: published to internal topics, absent from the public specs. - Provider ETA reporting: only the existing estimated time field is public; the added fields are not. - Per-token-pair fee tiers: configured through account properties rather than request parameters, and behaviour-neutral at launch. Also drops the Berachain, Ink and Sonic liquidity bullets and trims the HyperEVM and Monad ones. Those changes added internal pool discovery for sources the router already sampled, so no new liquidity became reachable, and several of the sources had already been announced in April. Corrects the cross-chain minimum-output field name to minBuyAmount; minAmountOut is the Gasless field.
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Summary
Adds the June and July 2026 changelog entries (the last published entry was
2026-05-31) and removes Mode and Blast, both of which were fully decommissioned during this window.Changes
New changelogs
fern/docs/changelog/2026-06-30.mdx— CCTP support for Solana in Cross-Chain API, Mayan Swift on HyperEVM, trade plans for Solana and Tron origins, Ondo asset support, and new liquidity sources on Arbitrum, Base, BSC, and Ethereum. Blast removed from Cross-Chain API.fern/docs/changelog/2026-07-31.mdx— Robinhood Chain (4663) generally available across Swap, Gasless, and Cross-Chain, BStocks support, kBTC and WBTC OFT routes,etaSourceon quotes and trade plans, token-pair fee tiers, and new liquidity sources across nine chains. Mode and Blast removals, and the/gasless-approval-tokenretirement.Stale chain references
Mode (
34443) and Blast (81457) are gone from every chain registry — the Rust chain enums, the cross-chain supported-chain list, and the TypeScriptChainIdenums all return no matches. Requests for either chain are now rejected.introduction/supported-chains.mdx— remove the Mode row from the Cross-Chain support matrix.introduction/faq.mdx,core-concepts/contracts.mdx,core-concepts/0x-cheat-sheet.mdx— remove Blast and Mode from the AllowanceHolder Cancun hardfork chain lists.Notes for review
Both entries were trimmed after the first draft to cover only what belongs in public release notes. Some changes that shipped in this window were deliberately excluded because they have no presence in the published OpenAPI specs and are not public surface; the editorial policy for those calls is documented internally.
Separately, the AllowanceHolder chain lists omit Abstract, Robinhood, and Tempo even though all three appear in the Swap and Gasless support table. Adding them requires confirming the deployed addresses against the
0x-settlerREADME, so it is out of scope here.Testing
Docs-only change. Verified no remaining Mode or Blast references outside the changelog archive, and that no changelog section was left empty after trimming.