generated: '2026-09-02'
method: probed
source: >-
  https://x402-list.com/.well-known/api-onboarding (HTTP 200,
  application/json, "aod" 0.1 descriptor) — a machine-readable onboarding and
  economics document the provider references from its own
  /.well-known/apis.json. Corroborated by the human pricing/limits prose at
  https://x402-list.com/api (HTTP 200) and by info.description in
  https://x402-list.com/api/v1/openapi.json.
description: >-
  x402 List has no subscriptions, no accounts and no keys. Reads are free and
  anonymous up to a daily quota; past that the SAME endpoints answer HTTP 402
  and settle per request over the x402 protocol on Base. Two paid write
  operations are priced per call rather than per plan, and one anti-spam fee
  applies to submissions from free compute hosts. There is no enterprise tier
  and no "contact sales" wall.
pricing_url: https://x402-list.com/api
machine_readable_pricing: https://x402-list.com/.well-known/api-onboarding
currency: USD
settlement: USDC on Base (EVM), per request, via the x402 protocol
account_required: false
agent_policy: allowed
maturity: self-serve
plan_count: 2
plans:
  - name: Free
    price: 0
    currency: USD
    billing_period: none
    included_quota: 2,000 GET requests per IP per UTC day on /api/v1/*
    rate_limit: 200 requests/minute per IP (advisory soft throttle above 100)
    overage: >-
      Requests beyond the daily quota are not refused — they return HTTP 402 and
      may be paid per request at the metered rate below.
    authentication: none
    url: https://x402-list.com/api
  - name: Metered (x402)
    price: 0.01
    currency: USD
    unit: per request
    billing_period: per-request
    included_quota: n/a — applies only past the free daily quota
    settlement: x402 on Base (USDC)
    signalling:
      - X-Meter-Remaining — free requests left today for this IP
      - X-Meter-Reset — Unix seconds at which the daily quota resets (next 00:00 UTC)
    url: https://x402-list.com/api
per_call_charges:
  - operation: postAssess
    path: POST /api/v1/assess
    price: 0.25
    currency: USD
    settlement: USDC on Base (x402)
    note: >-
      Fresh AI comparison of a shortlist of 2-8 already-assessed services. Charges
      only for the new reasoning, never to read an assessment already computed. An
      optional live probe target costs $0.25 plus that third-party endpoint's own
      price, non-refundable.
  - operation: postSuggestion
    path: POST /api/v1/suggestions
    price: 0.10
    currency: USD
    settlement: USDC on Base (x402)
    note: Paid suggestion box; manually reviewed, not published.
  - operation: submitService
    path: POST /api/v1/submit
    price: 0
    currency: USD
    note: >-
      Free from your own domain. $1.00 one-off for a service URL on a free
      compute host (vercel.app, workers.dev and similar), $0.50 to resubmit one
      rejected less than 14 days ago; both together stack to a single $1.50
      payment. Static-only hosting (github.io) and dev tunnels (ngrok,
      trycloudflare) are rejected at any price.