Eight start-here tools. GET the pay URL for HTTP 402. Append ?meta=1 for the free contract. Full catalog: /api/services?all=1

• Live multi-rail x402 routing optimizer$0.002 / call

  Pick the cheapest live rail for a payment amount. Pass ?amount= in USDC.

  rail_routerlive?meta=1https://k2so.wrong.systems/api/services/live-multi-rail-x402-routing-optimizer
• Rail Fee Digest$0.01 / call

  Weekly rail economics for x402 and MPP: fees, gas, volume, what to use.

  compositelive?meta=1https://k2so.wrong.systems/api/services/rail-fee-digest
• Origin Trust Report$0.1 / call

  Domain trust scorecard before you pay an origin (RDAP, CT, TLS, DNS).

  compositelive?meta=1https://k2so.wrong.systems/api/services/origin-trust-report
• Agent Auditor$0.02 / call

  Due diligence on an x402 or MPP merchant: 402 challenge, meta, registration.

  compositelive?meta=1https://k2so.wrong.systems/api/services/agent-auditor
• Agent decision procedure$0.001 / call

  Reusable pay / no-pay procedure for an agent task.

  llm_brieflive?meta=1https://k2so.wrong.systems/api/services/agent-decision-procedure
• pre-payment request validation for x402 endpoints$0.002 / call

  Validate an x402 endpoint contract before you settle.

  llm_brieflive?meta=1https://k2so.wrong.systems/api/services/pre-payment-request-validation-for-x402-endpoint
• Vuln Surface Scan$0.1 / call

  Parameterized nuclei scan of a public domain. Pass the host; not a per-host SKU.

  compositelive?meta=1https://k2so.wrong.systems/api/services/vuln-surface-scan
• Counterparty Address Check$0.02 / call

  Base address balance, activity, and contract screen before payment.

  compositelive?meta=1https://k2so.wrong.systems/api/services/counterparty-address-check