Developer access

Current coverage

OBSERVED · LAST GOOD CHECK 2026-11-05, 13:53 ET

Companies tracked

12

With published records

9

States

3

Reviewed records

105

Companies tracked are in the dossier index; companies with published records have at least one reviewed record. Dashboard →

Try it

One request, no key. The response is the record SX-07-A-0001 as published, shown in part.

$ curl -s https://seraphixsystems.com/r/SX-07-A-0001.json

{
  "id": "SX-07-A-0001",
  "version": 1,
  "tag": "COMPANY DISCLOSURE",
  "claim": "Black Pearl Facility -- 300 MW -- Wink, Texas -- bitcoin mining through February 2026; phased delivery to an HPC tenant commenced August 2026",
  "quote": "The Company has a 300 MW data center in Wink, Texas that draws power from the power grid (the “Black Pearl Facility”) that was used for bitcoin mining through February 2026, and in August 2026 commenced phased delivery to an HPC tenant.",
  "source": {
    "publisher": "SEC EDGAR",
    "url": "https://www.sec.gov/Archives/edgar/data/1819989/000181998926000050/cifr-20260930.htm"
  },
  "dates": {
    "source_published": "2026-11-02",
    "corrected": null
  },
  "published": "2026-11-05",
  …
}

Same record as a page: /r/SX-07-A-0001 · versions: /r/SX-07-A-0001/v1.json

What exists today

Data routes send CORS headers, ETag and Last-Modified, and answer conditional requests. A source that is missing, late or fails its schema answers 503 with status DEGRADED, never a guess. Licence: CC BY 4.0; cite the record permalink.

Connect an agent

The MCP server at https://seraphixsystems.com/mcp is remote (Streamable HTTP, JSON-RPC 2.0), read-only and needs no key. It answers protocol versions 2026-07-28, 2025-11-25, 2025-06-18 and 2025-03-26. Tools: search_records, get_record, list_companies, get_company, get_filings_wire, get_coverage. Every result carries the record URL, source URL, source date, publication date and review tier.

Claude Code

claude mcp add --transport http seraphix https://seraphixsystems.com/mcp

Cursor · ~/.cursor/mcp.json

{
  "mcpServers": {
    "seraphix": {
      "url": "https://seraphixsystems.com/mcp"
    }
  }
}

Claude Desktop · Settings › Connectors › Add custom connector, URL below (where your plan allows custom connectors)

https://seraphixsystems.com/mcp

Any client that only starts local servers (bridge with mcp-remote)

{
  "mcpServers": {
    "seraphix": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://seraphixsystems.com/mcp"
      ]
    }
  }
}

Raw JSON-RPC (protocol 2026-07-28, no handshake)

curl -s https://seraphixsystems.com/mcp \
  -H 'Content-Type: application/json' -H 'Accept: application/json, text/event-stream' \
  -H 'MCP-Protocol-Version: 2026-07-28' -H 'Mcp-Method: tools/call' -H 'Mcp-Name: get_coverage' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"get_coverage","arguments":{},"_meta":{"io.modelcontextprotocol/protocolVersion":"2026-07-28","io.modelcontextprotocol/clientInfo":{"name":"curl","version":"1"},"io.modelcontextprotocol/clientCapabilities":{}}}}'

The same data over REST (OpenAPI 3.1 at /openapi.json)

curl -s 'https://seraphixsystems.com/api/v1/records?query=MW&limit=3'
curl -s 'https://seraphixsystems.com/api/v1/companies/Cipher%20Digital'
curl -s -H 'Accept: text/markdown' https://seraphixsystems.com/r/SX-07-A-0001

The server was tested end to end with the official MCP TypeScript SDK clients (protocol 2025-11-25 and 2026-07-28) and with the Claude Code command above. The Cursor, Claude Desktop and mcp-remote configurations follow each client's documentation and were not tested inside those apps. Limit: 120 requests per minute per network; over that, HTTP 429 with Retry-After. Requests are counted per tool and per client name; IP addresses are not stored.

Paid API and watch alerts: in development

Paid API and watch alerts: IN DEVELOPMENT. There is no API key, service level, webhook or alert delivery today, and no date is promised. Public records, pages and feeds: LIVE: everything listed above works now, including the free MCP server and REST API, without a key.