v6.9.0 - 2026-08-31

release notes for voltage payments api release v6 9 0 , published 2026 08 31 payment responses, payment webhooks, and payment history filtering now expose a payment category payment history csv output advances to schema version 2 and includes payment category every webhook delivery now includes the additive x voltage webhook id header use it to identify the originating webhook registration when routing callbacks or selecting a shared secret; existing hmac verification and callback bodies are unchanged any amount bolt11 and bip21 receive requests with a nonzero receive processing fee are now rejected before invoice or payment uri generation fixed amount receives, zero fee receives, previously generated receives, and treasury movements are unaffected