# Skavio APIs for AI agents

> Public USDC transaction inspection, exact payment matching and blockchain evidence APIs, plus separate authenticated company processing. No custody or wallet private keys. llms.txt is voluntary navigation, not a guarantee of model indexing.

## Public x402 HTTP API and paid MCP
- [USDC Payment Verification — x402 API](https://www.skavio.eu/x402/): inspect native Circle USDC on Base, Polygon, Arbitrum, Optimism, Ethereum, Avalanche or Solana. API fees settle in native USDC on Base via x402 v2.
- [API reference and client setup](https://www.skavio.eu/x402/docs/): Verify 0.02 USDC; Match exact recipient and amount 0.03 USDC; PDF evidence 0.05 USDC. Evidence is not a tax invoice. First request returns unpaid HTTP 402.
- [OpenAPI](https://www.skavio.eu/x402/openapi.json): typed parameters, results, errors and price requirements.
- [x402 discovery](https://www.skavio.eu/.well-known/x402): three distinct paid HTTP resources.
- [Paid MCP endpoint](https://www.skavio.eu/mcp): Streamable HTTP. Four paid tools: verify_native_usdc, match_native_usdc_payment, usdc_transfer_evidence_pdf, domain_dns_tls_audit (0.05 USDC). Standard MCP clients need a wallet x402 extension to pay; connection alone cannot authorize spending. Preserve params._meta["x402/payment"] on retry.
- [Published MCP manifest](https://www.skavio.eu/.well-known/skavio-mcp.json): stable registry name eu.skavio/paid-micro-apis.
- [MCP registry](https://registry.modelcontextprotocol.io/?q=eu.skavio%2Fpaid-micro-apis): published remote server version, not a marketplace endorsement.

## Company processing: separate authentication and billing
- [Developers](https://www.skavio.eu/developers/): compare API integrations, marketplace links and copyable client instructions.
- [Skavio PDF, OCR & Document Processing MCP](https://www.skavio.eu/processing/docs/mcp/): OAuth company authorization and shared prepaid credits. Endpoint https://www.skavio.eu/processing/mcp; registry name io.github.skavio-eu/processing.
- [OAuth resource metadata](https://www.skavio.eu/.well-known/oauth-protected-resource/processing/mcp): authorization discovery; anonymous processing returns 401.
- [Agent Tools](https://www.skavio.eu/agent-tools/): company account and scoped API keys. Nine processing operations plus job status/result/wallet relays require authenticated ownership and current admission availability.
- [Agent Tools documentation](https://www.skavio.eu/agent-tools/docs.html): same idempotency key on retries, poll completed status, download result, verify SHA256.
- [Current operation catalog](https://www.skavio.eu/agent-tools/api/catalog): availability and measured-unit pricing. Workload x402 quotes and prepaid shared credits differ from fixed public verification fees.
- [Processing API](https://www.skavio.eu/api/): company REST processing integration.
- [Pricing](https://www.skavio.eu/pricing/#developers): published developer pricing. Inspect the actual quote before authorizing a call.

## Products and public evidence
- [Payment Proof](https://www.skavio.eu/proof/): separate company USDC payment-link product; not buying processing credits.
- [PayAPI Verify listing](https://payapi.market/api/skavio-usdc-transaction-verification): settlement-verified HTTP Verify route only, 0.02 USDC; no such verification claim for Match or PDF.
- [MCP source and integration](https://github.com/skavio-eu/skavio-agent-tools)
- [HTTP API documentation](https://github.com/skavio-eu/skavio-payment-proof-api)

Public RPC availability and finality affect results. No fixed latency SLA, custody, profitability or guaranteed search ranking is claimed. HTTP /x402/v1/processing remains disabled; use authenticated processing documentation and catalog.