Application builders
Ingest an immutable fact, submit a channel-specific delivery, and read the attempt and receipt through the public contract.
Independent delivery product
Delivery that leaves a receipt.
Sylphx Events is the sole writer for event ingestion, webhook delivery, realtime publication, transactional email, push notifications, retry, idempotency, attempts, and receipts. Admission is not silent success.
Who it is for
Builders who need durable delivery, not a fire-and-forget bus.
Product operators
Exactly-once admission, bounded retry, fenced claims, and immutable receipts. Ambiguity stays evidence. It is never rewritten as success.
Identity and Platform
Map outbox records into the opaque delivery envelope and wake dispatch. Events alone authors Events state and terminal provider receipts.
Four customer surfaces
One product, four doors, one writer.
This site
Docs, contract, first success, and pricing/trust. Events authors this content. This host is not the API.
API
https://api.events.sylphx.com/v1
Direct customer /v1. Discover api_base from the Binding. Not marketing HTML. Not this site.
SDK
Generated from the Product Contract. Envelope is Binding plus Identity delegation.
CLI
Generated from the same contract. Offline events-import is predecessor import, not the customer CLI.
Product promise
Ingest, deliver, claim, observe, resume.
The live product oracle is one authenticated application completing that path on the API. Health 200 is not that oracle. An empty host 404 is not this site.
Immutable events
CloudEvents-compatible facts scoped to a verified project. Corrections append.
Write-only connectors
Webhook, email, push, and realtime configuration. Secrets never return on readback.
Fenced delivery
Idempotent admission, bounded retry, generation leases, and a provider-effect key that forbids blind resend.
Receipts
Attempts and receipts are immutable. A provider acceptance id is not proof a human read the message.