Obolpay Gateway — compatible with x402™
A pay-per-call data API for AI agents and software: verifiable datasets, settled in USDC on Base (chain id 8453) through HTTP 402 Payment Required. Every delivery carries a signed receipt.
Business use only. This service is offered to businesses for business purposes (B2B); it is not intended for consumers. What it provides is data — not investment, financial, legal or tax advice.
For agents: machine-readable entry points
- /.well-known/x402 — discovery manifest (JSON)
- /llms.txt — instructions for LLM agents
- /openapi.json — OpenAPI description
- /pricing · /terms · /privacy · /legal — commercial terms
- /stats — demand statistics
How to buy
GET /api/v1/protected-data(optionally?types=<category>) returns HTTP 402 withaccepts[]and a free preview of the data.- Pay with one of the methods in
accepts[]— currently:exact(standard x402 EIP-3009 authorization; the gateway pays the settlement gas). - Send the request again with the payment: HTTP 200 with the data and a signed receipt.
Price: 0.01 USDC per request (USDC on Base), including any applicable Japanese consumption tax. Payment timing, delivery, cancellation and the prepaid balance are set out in the Legal notice (特定商取引法に基づく表記).
Catalog
12 categories, generated from the live feed (the same list the 402 returns as payment.preview.available_types):
ai-trust-artifacts— Verifiable AI provenance & supply-chain artifact pack (real examples)ft-jp-settlement-qa— Fine-tuning Q&A batch — JP business-day & settlement-date reasoning (vintage 2027, 158 pairs, deterministic ground truth)govern-evidence-governed— govern evidence bundle — governed scenario (deterministic, verified PASS by: govern-cli verify (workspace, Rust), govern-verify (open-verify, Rust), pyverify (open-verify, zero-dep Python))govern-evidence-stateful— govern evidence bundle — stateful-spendcap scenario (deterministic, verified PASS by: govern-cli verify (workspace, Rust), govern-verify (open-verify, Rust), pyverify (open-verify, zero-dep Python))govern-verifier— govern evidence verifier — zero-dependency offline Python implementation (Apache-2.0, full source included)governance— Governed-AI spending benchmark (verified run)governed-spending-decisions— Governed autonomous-spending decision log — 1000 intents, 0 human approvals, replay-verify PASS (deterministic, seed 42)jp-business-day— Japan business-day & settlement-date resolver — as of 2026-10-07 (bank/TSE calendar, T+1..T+20)llm-backend-decision— Local-LLM backend decision table — measured, deterministic rankings (Apple Silicon, measured 2026-06-06)llm-equivalence— Local-LLM backend equivalence & consistency matrix (Apple Silicon)openunit— openunit — population-weighted unit of account (ECB FX 2026-10-06)x402-ecosystem— x402 agent-economy observatory — 800 listed services (2026-10-06, daily snapshot)
ECB euro foreign exchange reference rates used in openunit are available free of charge from the ECB at https://www.ecb.europa.eu/stats/eurofxref/ (ECB copyright condition).