Core
Read-only POST requests and fixture seeding rate limits
0.8.167
Handle read-only POST headers and scope fixture reference reads to active operations.
Core 0.8.167 adopts React SDK 0.8.16 and supports X-Nexia-Read-Only: true on mutation-verb POST requests (such as query previews). Declared read-only POSTs enforce read budgets and reject immediately on connection failure rather than entering write recovery. See the frontend host guide.
Fixture and installation seed reference reads are now isolated to their active operation rate limiter with a raised quota (6000 requests per minute) and Retry-After headers, preventing premature HTTP 429 errors during multi-entity seeding. See the development data guide.