Sivut x402 Public Data APIs

Live Base USDC x402 endpoints for public SEC crypto filing radar, SEC filing markdown, public web-page extraction, and x402 seller intelligence.

Base URL: https://pay.sivut.co
Health: https://pay.sivut.co/health
OpenAPI: https://pay.sivut.co/openapi.json
Agent instructions: https://pay.sivut.co/llms.txt
Discovery JSON: https://pay.sivut.co/.well-known/agent.json
MCP discovery: https://pay.sivut.co/mcp
Payment: x402, USDC on Base mainnet
Payout address: 0x9d39802b6B65D360bFdA92c8221dB3EbA8cbF9D7

The origin is registered on x402scan and discoverable through AgentCash. AgentCash resolves the SEC buyer-pack endpoint as a paid x402 route with fixed 10.00 USD pricing settled in Base USDC.

Primary Paid Products

Endpoint	Price	Purpose
`GET /api/public-data/sec-crypto-filings/buyer-pack?limit=25`	`$10.00`	Buyer-ready SEC crypto filing package with current filings, company/signal summaries, provenance, and suggested follow-up calls.
`GET /api/public-data/sec-crypto-filings/latest?limit=10`	`$0.05`	Current public EDGAR filings filtered for crypto treasury, stablecoin, mining, blockchain, and digital-asset disclosure signals.
`GET /api/public-data/sec-crypto-filings/snapshot.csv?limit=25`	`$1.00`	Spreadsheet-ready CSV snapshot with company, ticker, form, filing date, accession, signals, snippet, source URL, and source hash.
`GET /api/public-data/sec-crypto-filings/markdown?accession=...`	`$0.10`	LLM-ready markdown for one public SEC filing selected by accession number.
`GET /api/public-data/page-markdown?url=https://example.com`	`$0.003`	Convert one public HTTP(S) page into LLM-ready markdown, plain text, headings, and links.
`GET /api/public-data/x402-seller-score?domain=example.com`	`$0.03`	Score a public x402 seller by revenue proof, metadata quality, route reliability, and buyer breadth.
`GET /api/public-data/x402-seller-intel?limit=20`	`$0.05`	Normalized public x402 directory data from active public sources.
`GET /api/contact-brief?url=https://example.com`	`$0.25`	Concise public contact brief from one public website.
`GET /api/opportunity-brief?url=https://example.com`	`$1.00`	Public opportunity brief with fit score and service angle.

Free Validation

curl "https://pay.sivut.co/api/public-data/sec-crypto-filings/sample?limit=3"
curl "https://pay.sivut.co/openapi.json"
curl "https://pay.sivut.co/llms.txt"

Paid Probe

curl -i "https://pay.sivut.co/api/public-data/sec-crypto-filings/buyer-pack?limit=25"

Expected unpaid response: HTTP 402 Payment Required with Base USDC x402 payment requirements. x402-aware clients can pay and retry automatically.

MCP / Cline Install

The service also exposes a free Streamable HTTP MCP wrapper for discovery and sample calls. It returns a current SEC sample plus paid x402 URLs for the full feed, CSV snapshot, filing markdown, and buyer pack.

{
  "mcpServers": {
    "sivut-sec-crypto-filing-radar": {
      "url": "https://pay.sivut.co/mcp"
    }
  }
}

Smoke-tested on 2026-06-09 UTC:

curl -X POST "https://pay.sivut.co/mcp" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}'

The MCP tools are sec_crypto_filings_sample, sec_crypto_filings_paid_urls, and x402_paid_resources.

Data Boundaries

The service uses public data only. Public web fetch endpoints reject localhost, private network targets, credentialed URLs, and account-gated sources.

Current Status

Production endpoint is live at https://pay.sivut.co. Health checks return public operational metadata only.

Sivut SEC Crypto Filing Radar