Source-classified proof

Evidence for the Bitcoin fee-decision layer.

Satoshi API keeps its public proof tied to machine-readable surfaces: live fee routes, MCP metadata, x402 discovery, public stats, and uptime checks. The proof is useful because the boundaries are explicit.

Check live fee decision Open x402 stats Open x402 discovery

REST

Fee decision routes

Free first-value routes return live fee recommendations, mempool context, and transaction cost estimates.

GET /api/v1/fees/recommended

MCP

Agent bridge

bitcoin-mcp gives agents a direct path from prompt to Bitcoin fee and payment context.

/.well-known/mcp/server-card.json

x402

Keyless paid calls

Paid resources are discoverable through the x402 manifest, catalog, and first-paid-call guide.

/.well-known/x402

What counts as proof

The strongest public proof is source-classified x402 stats, successful route availability, agent-readable metadata, and open-source code that can be run against a user's own node.

Use /api/v1/x402-stats for current gross, owner/test, and likely-organic x402 readouts.
Use paid OpenAPI and /.well-known/x402 for paid-resource coverage.
Use llms.txt, agents.json, and MCP cards for agent discovery.

Guardrails

Gross numbers include owner/test traffic unless the stats explicitly say likely-organic. Challenge volume is not the same as paid conversion. Public copy should not imply third-party revenue, customers, or production adoption without source-classified evidence.