generated: '2026-08-14'
method: searched
source: https://serbia-company-x402.vercel.app/ (published price per route) + live x402 PAYMENT-REQUIRED
  challenge decoded from every priced operation
docs: https://serbia-company-x402.vercel.app/
summary: >-
  There are no subscription plans, no tiers, no free allowance and no enterprise contract. Pricing is
  pure pay-per-call, quoted per route in USD-denominated Base USDC and enforced at request time by an
  HTTP 402 x402 challenge. Because the price is carried in the machine-readable PAYMENT-REQUIRED
  header on every unpaid call, the pricing is not just published — it is a runtime contract an agent
  can read and evaluate before signing, which is a stronger form of pricing transparency than a
  pricing page. Both the human-readable price on the landing page and the on-wire amount were captured
  and they agree.
pricing_model: pay-per-call
plan_count: 0
plans: []
currency: USD
settlement:
  asset: USD Coin (USDC)
  asset_contract: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
  asset_version: '2'
  network: eip155:8453
  network_name: Base mainnet
  pay_to: '0xcEE09f451355261E5f6a0271757638A55AF8Ae7b'
  scheme: exact
  max_timeout_seconds: 300
  protocol: x402 v2
  testnet_offered: false
  notes: >-
    Only Base mainnet is advertised in accepts[]. There is no testnet price and no invoicing, so every
    successful call is an on-chain USDC settlement at the moment of the request.
metered_prices:
  - operationId: getSerbianCompany
    path: /api/company
    method: GET
    price_usd: '0.01'
    on_wire_amount: '10000'
    on_wire_units: USDC base units (6 decimals)
    unit: per successful call
    quota: 1 company profile
  - operationId: searchSerbianCompanies
    path: /api/search
    method: GET
    price_usd: '0.01'
    on_wire_amount: '10000'
    on_wire_units: USDC base units (6 decimals)
    unit: per successful call
    quota: up to 10 ranked matches (limit param, default 5)
  - operationId: batchGetSerbianCompanies
    path: /api/company/batch
    method: POST
    price_usd: '0.05'
    on_wire_amount: '50000'
    on_wire_units: USDC base units (6 decimals)
    unit: per successful call
    quota: up to 10 company profiles per request
    notes: >-
      At 10 registration numbers the batch route works out to $0.005 per company, half the single
      lookup price — the only volume discount in the price list.
free_tier:
  exists: true
  form: unpriced routes rather than an allowance
  routes:
    - path: /api/sample
      note: Full worked Air Serbia profile with dataset provenance metadata. "Try before paying".
    - path: /health
      note: Liveness plus payment network, payment asset and snapshot metadata.
    - path: /openapi.json
      note: The served OpenAPI 3.1 document.
    - path: /.well-known/apis.json
      note: The APIs.json 0.21 discovery index.
  notes: >-
    There is no free quota of priced calls. The free surface is a fixed set of routes that are never
    payment-gated, so a buyer can inspect the response shape and the dataset provenance at zero cost
    but cannot query the registry without paying.
commercial_terms:
  accounts_required: false
  api_keys_required: false
  signup_url: null
  minimum_spend: null
  commitment: none
  refunds: not published
  invoicing: none — settlement is per request on-chain
  overage: not applicable — there is no included quota to exceed
  volume_discount: >-
    Only the implicit one in the batch route ($0.05 for up to 10 profiles vs $0.01 each).
  enterprise_contact: not published
gaps:
  - No refund, dispute or failed-response credit policy is published for a service that takes payment
    before it can confirm a result exists — a paid lookup for an unknown registration number still
    costs $0.01.
  - No testnet price, so a buyer cannot exercise a full paid round trip without spending real USDC.
  - The resource is not registered in the Coinbase CDP x402 bazaar discovery index (15,392 resources
    scanned 2026-08-14, zero matches) even though every 402 challenge carries a complete bazaar
    extension block — the pricing is machine-readable at the endpoint but not discoverable from the
    index buyers browse.
cross_links:
  authentication: authentication/serbia-company-data-authentication.yml
  rate_limits: rate-limits/serbia-company-data-rate-limits.yml
  sandbox: sandbox/serbia-company-data-sandbox.yml
  examples: examples/serbia-company-data-402-payment-required.json
x-evidence:
  fetched: '2026-08-14'
  probes:
    - url: https://serbia-company-x402.vercel.app/
      http_status: 200
      note: Landing page publishes $0.01 / $0.01 / $0.05 USDC per route.
    - url: https://serbia-company-x402.vercel.app/api/company?mb=07044275
      http_status: 402
      note: PAYMENT-REQUIRED header decodes to accepts[0].amount 10000 (0.01 USDC, 6 decimals).
    - url: https://serbia-company-x402.vercel.app/api/sample
      http_status: 200
      note: Free route, no payment challenge.
    - url: https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources
      http_status: 200
      note: Full index scanned (15,392 resources); this provider is not listed.