# MERCURY

**Canonical:** https://apis.io/providers/mercury-hq-com/  
**Website:** https://mercury-hq.com/  
**APIs profiled:** 4

MERCURY (Mercury Holdings Pty Ltd, Queensland, Australia) runs an agent-payable web-data network at network.mercury-hq.com: 19 live "Cited" services - verifiable web fetch, LLM-ready markdown, structured extract, metadata, link graph, robots/AI-crawler audit, diff, notarize, security-headers audit, table, feed, availability, JSON Schema validate, Merkle batch, sitemap, DNS snapshot, readability and redirect resolution - each sold per call over HTTP 402 (x402, USDC on Base mainnet eip155:8453) and each returning an EIP-191 signed provenance receipt verifiable offline against a pinned key. Three doors reach the same routes: keyless x402 micropayments, a Mercury API key (free sandbox and paid tiers), and a hosted MCP server whose tools/list is free. Discovery is machine-first: OpenAPI 3.1, llms.txt, /catalog, /.well-known/x402, a conformant A2A 0.3.0 agent card, an ERC-8004 registration and security.txt. The provider states it is early and has no external buyers yet.

## Kin Score — 59.0 / 100 (strong)

Scored 2026-10-09 under rubric 0.23.0. Trend: flat (+0.5 from 58.5).

| Facet | Score |
|---|---|
| Discoverability | 80.0 |
| Contract Quality | 44.6 |
| Contract Governance | 18.2 |
| Operational Transparency | 57.9 |
| Developer Ergonomics | 58.9 |
| Access Clarity | 84.2 |

Regulatory layer — **Payments**: 30.0 (matched via tags).

## Agent readiness — 35.5 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | na |
| Error Semantics | derived |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | conformant |
| Dry Run Mode | na |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## APIs (21)

- **MERCURY Web Fetch A2A Agent** — Agent-to-Agent (A2A 0.3.0) surface for "MERCURY Web Fetch", published as a conformant agent card at https://network.mercury-hq.com/.well-known/agent-card.json (and the legacy /....
- **MERCURY MCP Server** — Hosted Model Context Protocol server (serverInfo mercury-x402 1.0.0, protocolVersion 2025-06-18, streamable HTTP, JSON-RPC 2.0 over POST https://network.mercury-hq.com/mcp) expo...
- **MERCURY Cited Availability API** — The cited-availability API from MERCURY — 1 operation(s) for cited-availability.
- **MERCURY Cited Batch API** — The cited-batch API from MERCURY — 1 operation(s) for cited-batch.
- **MERCURY Cited Diff API** — The cited-diff API from MERCURY — 1 operation(s) for cited-diff.
- **MERCURY Cited Dns API** — The cited-dns API from MERCURY — 1 operation(s) for cited-dns.
- **MERCURY Cited Feed API** — The cited-feed API from MERCURY — 1 operation(s) for cited-feed.
- **MERCURY Cited Headers API** — The cited-headers API from MERCURY — 1 operation(s) for cited-headers.
- **MERCURY Cited Links API** — The cited-links API from MERCURY — 1 operation(s) for cited-links.
- **MERCURY Cited Markdown API** — The cited-markdown API from MERCURY — 1 operation(s) for cited-markdown.
- **MERCURY Cited Metadata API** — The cited-metadata API from MERCURY — 1 operation(s) for cited-metadata.
- **MERCURY Cited Readability API** — The cited-readability API from MERCURY — 1 operation(s) for cited-readability.
- **MERCURY Cited Redirect API** — The cited-redirect API from MERCURY — 1 operation(s) for cited-redirect.
- **MERCURY Cited Sitemap API** — The cited-sitemap API from MERCURY — 1 operation(s) for cited-sitemap.
- **MERCURY Data API** — The data API from MERCURY — 1 operation(s) for data.
- **MERCURY Html Table Extraction API** — The html-table-extraction API from MERCURY — 1 operation(s) for html-table-extraction.
- **MERCURY JSON Schema Validation API** — The json-schema-validation API from MERCURY — 1 operation(s) for json-schema-validation.
- **MERCURY Notarize API** — The notarize API from MERCURY — 1 operation(s) for notarize.
- **MERCURY Robots Txt API** — The robots-txt API from MERCURY — 1 operation(s) for robots-txt.
- **MERCURY Structured Data Extraction API** — The structured-data-extraction API from MERCURY — 1 operation(s) for structured-data-extraction.
- **MERCURY Verifiable Web Fetch API** — The verifiable-web-fetch API from MERCURY — 1 operation(s) for verifiable-web-fetch.

## MCP servers (1)

- **MERCURY MCP Server** — MERCURY ships a real, hosted Model Context Protocol server AND a first-party stdio package. The hosted server at https://network.mercury-hq.com/mcp answers GET with a descriptor...

## Agentic access (1)

- **Mercury Hq Com Agentic Access** — 19 operations

## Security (4)

- **Mercury Hq Com Authentication** — x402-payment/apiKey/none · 5 schemes
- **Mercury Hq Com Domain Security** — TLSv1.3
- **Mercury Hq Com Vulnerability Disclosure** — security.txt · contact published
- **Mercury Hq Com Trust Center** — trust center published

## Plans (1)

- **Mercury Hq Com Plans Pricing**

## Tags

Company, Agents, A2A, MCP, x402, HTTP 402, Machine Payments, Web Data, Web Scraping, Data Extraction, Provenance, Stablecoins, Artificial Intelligence

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/mercury-hq-com/). Scores are computed from the provider's own public artifacts under a published rubric.