Content
# 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
```bash
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
```bash
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.
```json
{
"mcpServers": {
"sivut-sec-crypto-filing-radar": {
"url": "https://pay.sivut.co/mcp"
}
}
}
```
Smoke-tested on 2026-06-09 UTC:
```bash
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.
