# Machine Works > Machine-buyable public evidence and free capability discovery/request. No payment or manufacturing authorization through the Broker. Public URL evidence extraction; domain DNS, redirects, headers and metadata; website/domain change detection against a prior server snapshot; recent SEC filing and company event evidence. On-demand JSON, not continuous monitoring. - [Catalog](https://machine-works-broker.weathered-dew-46b4.workers.dev/) - [Broker](https://machine-works-broker.weathered-dew-46b4.workers.dev/capabilities) - [MCP](https://machine-works-broker.weathered-dew-46b4.workers.dev/mcp) - [A2A](https://machine-works-broker.weathered-dew-46b4.workers.dev/.well-known/agent-card.json) - [ARD](https://machine-works-broker.weathered-dew-46b4.workers.dev/.well-known/ard.json) - [Broker OpenAPI](https://machine-works-broker.weathered-dew-46b4.workers.dev/openapi.json) - [Free preflight](https://machine-works-broker.weathered-dew-46b4.workers.dev/preflight) - [Sitemap](https://machine-works-broker.weathered-dew-46b4.workers.dev/sitemap.xml) - [Detect what changed on a domain or website](https://machine-works-broker.weathered-dew-46b4.workers.dev/capabilities/domain-endpoint-change-evidence) — $0.05 native Base USDC; Tell me what changed on a domain or website since a previous Machine Works snapshot: compare DNS, redirects, HTTP status, response headers and content hash. Requires priorSnapshotId from Domain Evidence for the identical URL. On-demand comparison; no recurring monitoring or semantic content diff. - [OpenAPI](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/openapi.json) · [x402](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/.well-known/x402) - [Inspect domain DNS, redirects and website facts](https://machine-works-broker.weathered-dew-46b4.workers.dev/capabilities/domain-endpoint-evidence) — $0.02 native Base USDC; Check a public domain or website endpoint: DNS addresses, HTTP status, redirects, response headers, page title and metadata, bounded content hash and timestamp. Returns a durable snapshot ID for later change detection. TLS certificate facts are unknown. - [OpenAPI](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/openapi.json) · [x402](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/.well-known/x402) - [Domain QuickCheck — reachability and DNS](https://machine-works-broker.weathered-dew-46b4.workers.dev/capabilities/domain-quickcheck) — $0.005 native Base USDC; Check public domain reachability, DNS public IP addresses, HTTP status and title. Up to 64 KiB and one redirect. No durable snapshot, content hash, security-header package, change history or TLS certificate facts. - [OpenAPI](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/openapi.json) · [x402](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/.well-known/x402) - [Get recent SEC filings and company event evidence](https://machine-works-broker.weathered-dew-46b4.workers.dev/capabilities/sec-filings) — $0.05 native Base USDC; Get recent SEC filings and company event evidence by ticker or CIK: official EDGAR submissions with filing dates, accession numbers, document links, 8-K event item identifiers and source hashes. Filter forms and dates; recent submissions only, no investment advice or continuous monitoring. - [OpenAPI](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/openapi.json) · [x402](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/.well-known/x402) - [SEC Latest Filing Lookup](https://machine-works-broker.weathered-dew-46b4.workers.dev/capabilities/sec-latest-filing-lookup) — $0.005 native Base USDC; Look up the latest matching recent SEC filing for a CIK: form, filing date, accession and official source URL. Optional single form filter. No ticker mapping, filing content, event IDs, change comparison, multi-filing evidence package or investment advice. - [OpenAPI](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/openapi.json) · [x402](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/.well-known/x402) - [Extract evidence and metadata from a public URL](https://machine-works-broker.weathered-dew-46b4.workers.dev/capabilities/url-evidence-pack) — $0.005 native Base USDC; Extract structured evidence and metadata from a public URL: page title, description, canonical URL, Open Graph, JSON-LD, bounded text extract, outbound links, timestamp and SHA-256. No JavaScript rendering, credentials or private-network access. 0.005 native Base USDC per successfully fulfilled and settled call. - [OpenAPI](https://machine-works.weathered-dew-46b4.workers.dev/openapi.json) · [x402](https://machine-works.weathered-dew-46b4.workers.dev/.well-known/x402) - [URL Facts Lite — title and metadata](https://machine-works-broker.weathered-dew-46b4.workers.dev/capabilities/url-facts-lite) — $0.003 native Base USDC; Get public URL title, description, canonical URL and HTTP status. Metadata only, up to 64 KiB and one redirect. No text extract, links, JSON-LD, Open Graph or content hash. - [OpenAPI](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/openapi.json) · [x402](https://machine-works-evidence-candidates.weathered-dew-46b4.workers.dev/.well-known/x402)