# MDH API Webhooks and real-time event delivery infrastructure. Base URL: https://api.mdh.dev/v1 (Bearer auth). Core: publish events (POST /events), register endpoints (POST /endpoints), HMAC-SHA256 signed deliveries (X-MDH-Signature), automatic retries up to 24h, instant replay (POST /events/{id}/replay). SDKs: Node, Python, Go, Rust.