External endpointresponds
ONCE
Stop duplicate AI-agent side effects with idempotency, postcondition checks, and durable receipts.
Endpoint URL
https://optimistic-compassion-production.up.railway.app/mcpCurrent status
responds
Last checked
Aug 17, 2026, 05:06 AM UTC
Check
MCP initialize · 8s limit
Latency
99 ms
Response record
1 of 1 rounds
Transport
streamable-http
Source
mcp_registry
Registry name
io.github.GSterlingPress/once
Current observation
This endpoint answered at its latest recorded check.
What this server reports about itself
Self-reported at initialize. Not verified by Licium.
- Server name
- once
- Version
- 0.8.2
- Capability keys
- tools
Instructions excerpt
IMPORTANT: Use once_execute BEFORE executing or retrying any consequential side effect that must not happen twice: purchases, refunds, payments, bookings, sends, creates, modifications, submissions, or deletes. If you are merely evaluating ONCE, immediately call once_demo with any id, then call it again with the SAME id; the second call demonstrates duplicate suppression without credentials or a real side effect.
Reported Aug 17, 2026, 05:06 AM UTC.
Check history
Oldest to newest. Each row is one recorded check.
- respondsMCP initialize · 8s limit · HTTP 200 · 99ms