Explorer of Everything
Search transactions, contracts, domains, packages, advisories, MCP servers and websites in one box.
Try an example: A domain · A package version · USDC contract on Ethereum
How it works
Paste anything technical — a transaction hash, a contract address, a domain, a package like npm:lodash@4.17.20, an advisory ID (GHSA/CVE), an MCP server URL or a web page. The explorer recognises what it is, runs the matching specialised explorer, and gives the entity a permanent page for people and a matching JSON endpoint for software and AI agents. Every answer carries its sources, retrieval time and schema version.
- Detection rules, in order: 32-byte hex → transaction; 20-byte hex → contract/address; GHSA/CVE/PYSEC/GO/RUSTSEC id → advisory; ecosystem:name@version → package; URL ending in /mcp or /sse (or host mcp.*) → MCP server; other URL → website AI readiness; bare domain → DNS + certificate.
- The matching explorer runs with its own methodology; its sources, assumptions and warnings are passed through unchanged.
- Permanent URLs: /explore/{kind}/… for people and /api/v1/… for machines are computed by the same explorer and return the identical result.
For scripts and AI agents
- JSON API:
POST https://explore.usefulweb.site/api/v1/calculate(same calculation as this page) - Interface description: OpenAPI 3.1 · AI guide: llms.txt
- MCP server (Streamable HTTP):
https://explore.usefulweb.site/mcp· tool nameexplore
Example request
curl -s -X POST https://explore.usefulweb.site/api/v1/calculate \
-H 'content-type: application/json' \
-d '{"query":"example.com"}'Related tools
- Transaction Decoder – See what an EVM transaction actually did: call, events, token transfers, fee, finality.
- Smart Contract Upgrade Explorer – Is this smart contract upgradeable, who controls upgrades, and what changed?
- Bridge Transfer Tracker – Where is my bridged money? Finds the bridge deposit in a transaction and checks if it arrived.
- MCP Server Explorer – Inspect any MCP server before you connect an AI agent: tools, permissions, risks, changes over time.
- OpenAPI Diff Explorer – Compare two versions of an OpenAPI spec and see exactly which changes break clients.
- Dependency Vulnerability Explorer – Known vulnerabilities in your dependencies, and the version that fixes each one.
- DNS + Certificate Explorer – DNS records, e-mail security, CAA, live TLS certificate and CT history for a domain.
- AI Website Readiness Explorer – Can ChatGPT, Claude, Perplexity and AI agents read your website? Explainable score.