Playground · callback test

Spins up a real session against the Bubblio platform with a single test_tool wired to whatever callback URL you provide. The character is instructed to call the tool the moment the session opens — easiest way to verify delivery.

Or talk to a specific provider's default avatar in the bubble — no character or callback needed:
What to check on webhook.site after starting:
  1. One POST request arrives within ~10s
  2. Body is JSON: { sessionId, tool: "test_tool", args: { ping: "..." } }
  3. Headers include X-Bubblio-Signature + replay-protected X-Bubblio-Signature-V2 & X-Bubblio-Timestamp
  4. Headers include X-Bubblio-Session and X-Bubblio-Tool