Fired when a trade occurs at a near-certain-outcome price. At least one of min_probability or max_probability is required. Use min_probability (e.g. 0.95) to trigger when YES is near-certain; use max_probability (e.g. 0.05) for NO near-certain. Optional filters: position_outcome_indices — restrict by outcome index (0 = Yes/Up, 1 = No); condition_ids — restrict to specific markets; position_ids — restrict to specific outcome tokens; outcomes — restrict by outcome name (e.g. "Yes", "No"); event_slugs — restrict to specific events.
Documentation Index
Fetch the complete documentation index at: https://docs.struct.to/llms.txt
Use this file to discover all available pages before exploring further.
UUID of the webhook subscription that fired
UUID of this specific delivery attempt (matches envelope id field)
Event name string (e.g. trader_first_trade)
Delivery attempt number (1 = first attempt)
x >= 1HMAC-SHA256 of the raw request body: sha256=<hex>. Present only when the webhook has a secret configured. Verify with: HMAC-SHA256(secret, raw_body_bytes) == hex_part.
^sha256=[0-9a-f]{64}$Webhook delivery envelope. The data field contains the event-specific payload.
Outer envelope for every webhook HTTP POST delivery. The data field contains the event-specific payload. Delivery headers sent with every POST: X-Webhook-ID (subscription UUID), X-Delivery-ID (this attempt's UUID), X-Event-Type (event name string, e.g. trader_first_trade), X-Attempt (attempt number, 1-indexed). When the webhook has a secret configured, X-Webhook-Signature: sha256=<hmac-hex> is also included — compute HMAC-SHA256 over the raw request body using your secret to verify.
UUID of this specific delivery attempt (matches X-Delivery-ID header)
Event name (e.g. trader_first_trade). On test deliveries the suffix _test is appended.
Close-to-bond webhook payload
Unix timestamp in milliseconds when this delivery was created
UUID of the webhook subscription that fired (matches X-Webhook-ID header)
Delivery attempt number. 1 = first attempt; increments on each retry.
x >= 1Webhook delivery acknowledged