Documentation

Alloy Infrastructure APIs exposes 80+ endpoints across twelve categories: network, DNS, domain, email, TLS, web, security, utilities, reference data, observability, and a flagship internet diagnosis endpoint. Every endpoint returns the same envelope shape and supports the same query controls.

Quick links

• Getting started — your first request in under 30 seconds.
• Authentication — how API keys and tiers work.
• Response format — envelope, format conversion, field selection.
• Rate limits — sliding window with burst protection.
• Full endpoint reference — every endpoint, every parameter.
• OpenAPI 3.1 spec — generated from the canonical registry.

Design principles

• Every endpoint returns a SuccessEnvelope or ErrorEnvelope.
• Authentication is optional on the anonymous tier; keys unlock higher limits.
• Responses can be reshaped at the query layer (format, fields, sort, etc.) without server roundtrips.
• Cache headers and ETags are emitted everywhere safe to cache.
• No upstream data is paywalled — everything routes through public protocols (DNS, RDAP, RIPEstat, CT logs, DoH).