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6 changes: 6 additions & 0 deletions references/api/changelog.mdx
Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,12 @@ title: "API Changelog"
description: "Record of breaking changes, deprecations, and notable additions to the Relay API"
---

## 2026-09-05 — `POST /execute/swap` removed

**Breaking** — `POST /execute/swap` has been removed. Calls to the endpoint now return `404`. The endpoint was a legacy execution path that predated the unified quote flow and had been superseded for some time.

**Replacement** — use [`POST /quote/v2`](/references/api/get-quote-v2) to request a quote and follow the returned steps to execute it. The Quote API covers bridging, swapping, and calling through a single unified surface, and is the same flow already recommended by the [`POST /price`](/references/api/get-price) and [`POST /execute`](/references/api/execute) references. See [Step Execution](/references/api/api_core_concepts/step-execution) for how to submit each step returned by the quote.

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P2 Mischaracterized execute reference

The replacement guidance says that the unified Quote API and returned-step flow is already recommended by the linked POST /execute reference. That page only declares the POST /execute OpenAPI operation and contains no Quote API or step-execution guidance. Remove or qualify this assertion, or add the corresponding migration guidance to the execute reference, so integrators are not sent to documentation that does not support the stated migration path.

Artifacts

Narrow Execute reference validation script

  • The executed Python validator checks the changelog link, resolves the precise local Execute reference, and searches it for Quote API and returned-step recommendations; it defines the reproducible validation scope.

Observed output disproving the Execute reference claim

  • Captured output from running the narrow validator shows the exact linked path, zero Quote API and returned-step-flow hits, a DISPROVED result, and exit code 0; the candidate is unsupported.

View artifacts

T-Rex Ran code and verified through T-Rex


## 2026-09-01 — Request signature endpoints removed

**Breaking** — `GET /requests/:requestId/signature` and `GET /requests/:requestId/signature/v2` have been removed. Calls to both endpoints now return `404`. Both returned a solver signature over a small subset of intent fields, which never covered the minimum output amount, required a second call after the quote, returned only partial data until the request reached a terminal state, and behaved inconsistently across chains.
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