x402-payment-test
Cheapest possible Base-mainnet x402 conformance call: settle $0.001 of USDC and receive payer identity, request echo and receipt. Built for agents testing wallets, Payment-Signature, facilitators and settlement. Try GET /x402-echo/sample.
| Host | x402.agentindex.world |
|---|---|
| Price | $0.001–$0.02 per call |
| Network | Base |
| Paid endpoints listed | 117 |
| Calls, last 30 days* | 700 |
| Most unique payers on one endpoint (30 days)* | 6 |
| Last paid call* | 2026-10-15 |
| Tags | base rpc, base mainnet, checksum, datetime, Powered by Jev, validation, geospatial, latitude longitude |
* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.
Endpoints
| URL | Method | Price |
|---|---|---|
https://x402.agentindex.world/x402-echoCheapest possible Base-mainnet x402 conformance call: settle $0.001 of USDC and receive payer identity, request echo… | POST | $0.001 |
https://x402.agentindex.world/extractExtract structured data from a URL or raw text into strict JSON matching a schema you provide. Fields the content… | POST | $0.002 |
https://x402.agentindex.world/newsTop Hacker News headlines right now - title, URL, score, comments. Fresh links for agents that need current… | GET | $0.001 |
https://x402.agentindex.world/weatherCurrent weather and a 3-day forecast for any city or lat/lon - temperature, humidity, wind, conditions. No account, no… | GET | $0.001 |
https://x402.agentindex.world/agent-healthFresh operational audit of any public agent or paid API: reachability, latency, HTTP status, x402 challenge,… | GET | $0.001 |
https://x402.agentindex.world/gas-priceRead the live gas price, EIP-1559 base fee and estimated native-transfer cost on Base, Ethereum, Polygon, Arbitrum or… | GET | $0.001 |
https://x402.agentindex.world/searchJev-routed web search: each query goes to the best specialised source (code, facts, news, prices), results ranked by… | POST | $0.01 |
https://x402.agentindex.world/wallet-balanceRead native coin and USDC balances for any EVM wallet on Base, Ethereum, Polygon, Arbitrum or Optimism, with atomic… | GET | $0.001 |
https://x402.agentindex.world/web-readFetch URL content as Markdown: read any web page and get clean Markdown - navigation, ads and boilerplate stripped,… | POST | $0.002 |
https://x402.agentindex.world/pdfExtract a public PDF (by HTTPS URL or base64) into clean Markdown - headings and tables preserved via layout-aware… | POST | $0.002 |
https://x402.agentindex.world/time/humanizeHuman-readable relative time ('2 hours ago', 'in 3 days') between a datetime and a reference (default now). | POST | $0.002 |
https://x402.agentindex.world/translateTranslate up to 200 text segments in a single call - the same result that would otherwise take 200 separate calls to… | POST | $0.002 |
https://x402.agentindex.world/text/slugSlugify text: strip accents, lowercase, replace non-alphanumerics with a separator. | POST | $0.002 |
https://x402.agentindex.world/summarizeSummarize a URL, raw text or HTML at the length you request - short, medium or long - with the source noted. Neutral… | POST | $0.002 |
https://x402.agentindex.world/v1/chat/completions437 models, no account, no API key, pay per call in USDC - OpenAI-compatible chat completions and AI inference gateway… | POST | $0.001 |
https://x402.agentindex.world/decideAsk up to 20 typed yes/no, multiple-choice or ordinal-scale questions about one shared piece of context in a single… | POST | $0.001 |
https://x402.agentindex.world/json/flattenFlatten a nested JSON document into single-level dotted-path keys. | POST | $0.001 |
https://x402.agentindex.world/discoverFind MCP servers matching a need, ranked by semantic similarity over a curated snapshot of MCP servers. Returns name,… | POST | $0.001 |
https://x402.agentindex.world/fact-checkFact-check verdict written by Claude Haiku 5.5 (Anthropic) from real web sources:… | POST | $0.02 |
https://x402.agentindex.world/token-cardBase token safety check: Claude Haiku 5.5 (Anthropic) writes a rug pull / honeypot verdict (SAFE/CAUTION/RISKY/DANGER)… | GET | $0.02 |
https://x402.agentindex.world/tipVoluntarily support AgentIndex with one cent of Base USDC. Returns payer identity, a thank-you acknowledgement and an… | POST | $0.01 |
https://x402.agentindex.world/base/callGeneric read-only eth_call against any Base mainnet contract - pass raw calldata, get the raw return data back. | POST | $0.005 |
https://x402.agentindex.world/base/pendingThe current pending Base mainnet block (mempool, not yet mined) - unconfirmed transactions via… | POST | $0.01 |
https://x402.agentindex.world/base/txBase transaction lookup by hash - sender, recipient, value, calldata, gas and block, live from Base mainnet via… | POST | $0.008 |
https://x402.agentindex.world/base/basenameResolve a Basename, Base's native ENS-equivalent, to its wallet address via the L2 Basenames resolver. | POST | $0.005 |
Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.
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