# Internet infrastructure explorers

> A network of 11 focused, deterministic tools. Every tool has a human page, a JSON API, an OpenAPI description and an MCP tool that all return the same result (inputs, result, units, assumptions, sources, timestamps).

## Machine interfaces
- Tool catalog (JSON): https://infrastructure.usefulweb.site/api/v1/tools
- OpenAPI (all tools): https://infrastructure.usefulweb.site/openapi.json
- MCP server (all tools + workflows): https://infrastructure.usefulweb.site/mcp
- Pick a tool for a natural-language request: POST https://infrastructure.usefulweb.site/api/v1/tools/prompt-to-tool-router/calculate {"request": "..."}

## Tools
- [ASN Relationship Explorer](https://asnrelationshipexplorer.usefulweb.site/): An autonomous system at a glance: holder, country, BGP neighbours and announced prefixes. API: POST https://infrastructure.usefulweb.site/api/v1/tools/asn-relationship-explorer/calculate
- [BGP Route Explorer](https://bgprouteexplorer.usefulweb.site/): Who announces an IP or prefix in BGP: origin ASes, RPKI validity, visibility and origin changes. API: POST https://infrastructure.usefulweb.site/api/v1/tools/bgp-route-explorer/calculate
- [CDN Behaviour Explorer](https://cdnbehaviorexplorer.usefulweb.site/): Which CDN serves a URL, whether it caches it (HIT/MISS, Age, TTL) and how, from two requests. API: POST https://infrastructure.usefulweb.site/api/v1/tools/cdn-behavior-explorer/calculate
- [Certificate Transparency Explorer](https://certificatetransparencyexplorer.usefulweb.site/): Every logged certificate for a domain: history, issuers, subdomains, wildcards and expiry. API: POST https://infrastructure.usefulweb.site/api/v1/tools/certificate-transparency-explorer/calculate
- [DNS + Certificate Explorer](https://dnscertificateexplorer.usefulweb.site/): DNS records, e-mail security, CAA, live TLS certificate and CT history for a domain. API: POST https://infrastructure.usefulweb.site/api/v1/tools/dns-certificate-explorer/calculate
- [Domain History Graph](https://domainhistorygraph.usefulweb.site/): Registration, DNS, hosting networks, certificates and Wayback captures of a domain as a timeline. API: POST https://infrastructure.usefulweb.site/api/v1/tools/domain-history-graph/calculate
- [E-mail Infrastructure Explorer](https://emailinfrastructureexplorer.usefulweb.site/): MX, SPF lookups, DMARC, DKIM, MTA-STS, TLS-RPT and BIMI for a domain, scored with fixes. API: POST https://infrastructure.usefulweb.site/api/v1/tools/email-infrastructure-explorer/calculate
- [Global DNS Explorer](https://globaldnsexplorer.usefulweb.site/): Ask every authoritative name server and public resolvers: records, propagation, DNSSEC, mistakes. API: POST https://infrastructure.usefulweb.site/api/v1/tools/global-dns-explorer/calculate
- [HTTP Technology Explorer](https://httptechnologyexplorer.usefulweb.site/): Headers, compression, caching, HTTP/2-3 hints, redirects, security and tech stack for a URL. API: POST https://infrastructure.usefulweb.site/api/v1/tools/http-technology-explorer/calculate
- [Internet Outage Atlas](https://internetoutageatlas.usefulweb.site/): Correlate public outage signals (IODA, RIPEstat BGP, live probe) for a country, ASN or domain. API: POST https://infrastructure.usefulweb.site/api/v1/tools/internet-outage-atlas/calculate
- [IPv6 Readiness Explorer](https://ipv6readinessexplorer.usefulweb.site/): Is a domain reachable over IPv6? Web, DNS and mail checks, address classes and a scored report. API: POST https://infrastructure.usefulweb.site/api/v1/tools/ipv6-readiness-explorer/calculate

## Workflows