402rpc
402rpc.com
Ethereum mainnet JSON-RPC paid per request in USDC on Base over x402, plus simple price, balance and gas endpoints. Current state only (not an archive node). No account or key.
USDCBasePolygonArbitrum
Quartermaster
quartermaster.surewhynot.app
Own this tool? Claim this listing free
x402 toolkit for agents: a free endpoint inspector, plus paid per-call tools to verify settlements, decode payment challenges, read Base chain data and run web/dev utilities.
Crypto payment details
- Payment protocol
- x402
- Networks
- Base, Solana
- Tokens
- USDC
- Price per call (our 402 probe)
- $0.001 per call (check the provider for current pricing)
- Example paid endpoint
https://quartermaster.surewhynot.app/v1/gas- Also listed on
- Agentic.Market, public listing
Public statsmeasured by YourAITools
Measuring since Nov 2, 2026: 8 daily checks so far, so these numbers are still thin.
- Status at last check
- Up
- Answered below HTTP 500
- Measuring since
- Nov 2, 2026
- Last check
- Nov 9, 2026, 10:10 AM ET
- HTTP status
- 402
- Valid x402 payment terms
- Yes
- x402 version
- v2
- Response time
- 1994 ms
- Time to response headers
- Listed price
- $0.001
- Price seen in the 402
- $0.001 on Base
- Inside the listed price range
- Uptime, last 7 days
- 100%
- 7 of 7 daily checks up · valid x402 100%
- Uptime, last 30 days
- 100%
- 8 of 8 daily checks up · valid x402 100%
Trust score97/100Strong
From 8 daily checks since Nov 2, 2026, last 30 days. Formula 1.0-median30.
- Uptime, last 30 days: 100%40 / 40 pts
- Valid x402 payment request: 100%40 / 40 pts
- Price matches the listing: Yes10 / 10 pts
- Median response time (up checks): 861 ms7 / 10 pts
How the score works: uptime (40 points), how often the endpoint returned a valid x402 payment request (40), whether the price in it matches the listed price (10) and median response time of the up checks (10: under 500 ms 10, 500–999 ms 7, 1–2 s 4, slower 1, 0 if the last check was not up). Parts that can’t apply are left out and the score is rescaled. Strong is 90–100, fair 70–89, weak under 70. Paying for Featured, Sponsored or any placement never changes it, and it is not an endorsement. Think it’s wrong? Email hello@youraitools.co and we’ll re-check it.
How we measure: one unpaid check per day of the listing’s example endpoint (GET https://quartermaster.surewhynot.app/v1/gas). We never pay and never send a payment header. Up means any answer below HTTP 500 except 404/410 within 8 seconds. Uptime counts those daily checks. Payment never changes these numbers. A technical check, not an endorsement. Raw JSON · schema
How we verified it
Unpaid GET /v1/gas returned HTTP 402 on 2026-11-02 with x402 payment terms: x402 v2, exact, 0.001 USDC on Base or Solana. Price checked via our 402 probe on 2026-11-02 (3 routes probed; other routes may be priced differently). Official site fetched (HTTP 200) on 2026-11-02. Shown on the public Agentic.Market site. Last checked 2026-11-02.
The description summarizes the provider's own site. YourAITools is not affiliated with Quartermaster. Listing a tool is not an endorsement: check pricing and terms with the provider before paying.
Some links are affiliate links; we may earn a commission at no cost to you. It never affects listings or order. How we make money
Is this your tool? Update the listing for free, or get it Featured for 30 days ($29, card or USDC): a badge and a labeled slot at the top of its category. Check your x402 endpoint free.
Own Quartermaster? Add a “Listed on YourAITools” badge
Free, optional, no tracking. Paste one of these into your site or README:
<a href="https://youraitools.co/tool/quartermaster"><img src="https://youraitools.co/badge/listed.svg" alt="Listed on YourAITools" width="168" height="20"></a>
[](https://youraitools.co/tool/quartermaster)
Accepts crypto? Use the “Pays in crypto” badge instead.
Building or using tools like this? Discuss them in the YourAITools Community.
More in Developer Tools & Infrastructure
AgentBodega
agentbodega.store
A store of small paid utility APIs for agents: service status checks (GitHub, Cloudflare, cloud providers), web search, launch audits and x402 inspection, each with a receipt.
USDCBaseSolana
ai-mail.sh
ai-mail.sh
Receive-only email addresses for AI agents, bought over x402: a day or a month per address. Reading is free, and codes and verification links are extracted for you.
USDCBase
Building an x402 API? Free x402 course + launch help inside
Join the community