quartermaster.surewhynot.app
Base · payout 0x5253666c40432f009ebd99908b9cd2a7fd1019cb
Answers HTTP 402
1 of 2 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-10-04
Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.
x402-style payments, last 7 days (Base)
30 x402-style payments from 11 distinct payers, $0.20 USDC in the last 7 days (Base, exact read)
window ended 2026-10-05
- Payments
- 30
- Outside payers
- 11
- USDC
- 0.2
All USDC received at this payout address: $0.20 (includes payments that are not x402)
Method: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.
Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-05, every block of the window: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's `exact` scheme uses. Some non-x402 gasless sends use it too; Sato Hub's own payer wallets are left out
Delivery is not measured. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.
Chains · one payout address, each chain read on its own
| Chain | Payout address | Listings | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0x5253666c40432f009ebd99908b9cd2a7fd1019cb | 43 | 1 of 2 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-04 | 30 x402-style payments from 11 distinct payers, $0.20 USDC in the last 7 days (Base, exact read) |
- Hosts
- quartermaster.surewhynot.app
- Listings
- 43 registered in the x402 catalogue
- Price range
- $0.0010 to $0.050 per call, as registered
- Categories (auto)
- Developer tools (14), Onchain data (14), Commerce (3), Search (3), Web data (3), Inference (2), Other (2), Identity (1), Media (1)
- First seen
- 2026-10-05 · last seen 2026-10-05
Claim this merchant
Sign a message from the payout address 0x525366…1019cb to claim this page or download its payment ledger. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.
Registrations · 43
| Endpoint | Chain | Category | Price | Catalogue date |
|---|---|---|---|---|
https://quartermaster.surewhynot.app/v1/balance Check ETH and USDC (or any ERC-20) balance of an address on Base — pre-flight funding checks for payments and settlement. | Base | Onchain data | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/base/allowance Check an ERC-20 spending allowance on Base; flags unlimited approvals. | Base | Onchain data | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/base/contract Determine whether a Base address is a contract or an externally-owned account. | Base | Onchain data | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/base/token-info ERC-20 name, symbol, decimals, and total supply for a token on Base. | Base | Onchain data | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/base64 Base64 encode or decode a string. | Base | Developer tools | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/basename Resolve Basenames (.base.eth) to wallet addresses on Base. | Base | Onchain data | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/diff Compact line-level diff between two texts. | Base | Developer tools | $0.001 | 2026-09-25 |
https://quartermaster.surewhynot.app/v1/dns Resolve DNS records using DNS-over-HTTPS and return structured JSON for infrastructure, security, and agent workflows. | Base | Identity | $0.001 | 2026-10-05 |
https://quartermaster.surewhynot.app/v1/gas Current Base gas prices and a simple-transfer cost estimate for transaction planning. | Base | Onchain data | $0.001 | 2026-10-01 |
https://quartermaster.surewhynot.app/v1/holiday Is a date a public holiday in a country (2-letter ISO code)? Returns the holiday name, its types, and the next upcoming holiday that year. | Base | Commerce | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/http-check Liveness/latency pre-flight for a URL: is it up, HTTP status and class, response latency in ms, whether it redirects (and where), content-type and server. | Base | Commerce | $0.001 | 2026-10-04 |
https://quartermaster.surewhynot.app/v1/jwt-decode Decode a JWT header and payload (signature not verified). | Base | Developer tools | $0.001 | 2026-10-02 |
https://quartermaster.surewhynot.app/v1/pick Pick one or several options at random from a caller-supplied list (CSPRNG), optionally without replacement — a decision-maker for agents. | Base | Developer tools | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/price USD price for major tokens by symbol or any Base ERC-20 by contract address, with source failover. | Base | Onchain data | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/random Cryptographically-secure random integers in a chosen range (CSPRNG, rejection-sampled to avoid modulo bias) — real entropy an LLM cannot produce itself. | Base | Developer tools | $0.001 | 2026-09-24 |
https://quartermaster.surewhynot.app/v1/regex Test a regular expression against text and return every match with numbered and named capture groups. Deterministic. | Base | Developer tools | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/text-stats Word, sentence, and paragraph counts, reading time, and readability score for text. | Base | Developer tools | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/x402/discover Search the Coinbase x402 Bazaar for paid resources by natural-language query. | Base | Search | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/x402/merchant Look up all x402 Bazaar resources listed under a merchant payTo wallet. | Base | Other | $0.001 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/classify Zero-shot text classification into caller-supplied labels; the result is validated back into your label set so agents can route on it deterministically. | Base | Inference | $0.002 | 2026-10-04 |
https://quartermaster.surewhynot.app/v1/embed Text embeddings for semantic search and RAG: one vector per call, 1024 dimensions. | Base | Search | $0.002 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/meta Get structured metadata for a public webpage: title, description, canonical URL, Open Graph fields, favicon, and language. | Base | Web data | $0.002 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/moderate Content-safety classification (Llama Guard): safe/unsafe plus category codes. | Base | Inference | $0.002 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/receipt Formatted settlement receipt for any Base transaction hash or Solana signature: timestamp, status, decoded token transfers, explorer link — records for x402 payments on either rail. | Base | Onchain data | $0.002 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/tx Check the status of a Base transaction: success/reverted/pending, confirmations, gas used, and explorer link — settlement verification for agents and payment flows. | Base | Onchain data | $0.002 | 2026-10-05 |
https://quartermaster.surewhynot.app/v1/unshorten Expand a shortened or redirecting URL: follows the redirect chain server-side and returns every hop plus the final destination, re-validating each hop against SSRF. | Base | Onchain data | $0.002 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/x402/inspect Inspect and lint any x402 paid endpoint: decodes the 402 payment challenge, names the network and asset, and flags misconfigurations including missing Bazaar discovery metadata. | Base | Developer tools | $0.002 | 2026-09-22 |
https://quartermaster.surewhynot.app/v1/payment-proof Verify an x402 settlement on Base OR Solana: pass a 0x transaction hash or a base58 signature, confirm it succeeded, decode its USDC transfers (event logs on Base, net token-balance deltas on Solana), and optionally ass… | Base | Onchain data | $0.003 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/tx-decode Decode a Base transaction's calldata into a human-readable function call and arguments — ERC-20 transfer/approve and the EIP-3009 transferWithAuthorization used by x402 settlements. Recognizes x402 settlement transactio… | Base | Onchain data | $0.003 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/x402/simulate Pre-flight an x402 payment: decode the endpoint's challenge, report the cost on every rail (Base and Solana) and the cheapest, and — with a payer address — verify the wallet can afford the call on Base. | Base | Commerce | $0.003 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/describe-image AI vision: describe any public image, including visible text (OCR-lite). | Base | Media | $0.005 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/extract Extract clean readable text and metadata from a public webpage and return structured JSON for AI agents. | Base | Web data | $0.005 | 2026-09-22 |
https://quartermaster.surewhynot.app/v1/extract-json Structured extraction: give a JSON Schema plus a URL or raw text, get back JSON matching the schema. | Base | Developer tools | $0.005 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/tldr AI TL;DR of raw text passed in directly (not a URL): short, medium, or long. The text-in sibling of /v1/summarize. | Base | Developer tools | $0.005 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/translate AI translation of text into any target language; source language auto-detected. | Base | Developer tools | $0.005 | 2026-10-04 |
https://quartermaster.surewhynot.app/v1/summarize AI summary of any public webpage: fetches the URL, extracts readable content, and returns a short, medium, or long factual summary. | Base | Web data | $0.01 | 2026-10-04 |
https://quartermaster.surewhynot.app/v1/x402-audit Full x402 endpoint audit: verifies the 402 challenge, payment fields, Bazaar discovery metadata, and the origin's discovery surfaces (llms.txt, openapi.json, .well-known/x402, discovery/resources), returning a 0-100 sco… | Base | Developer tools | $0.01 | 2026-09-29 |
https://quartermaster.surewhynot.app/v1/route The x402 Router: send a plain-English goal in q (e.g. 'audit https://api.example.com/paid', 'price of eth', 'is 0x… a contract', 'verify settlement 0x…') and Quartermaster picks the right tool from its full toolkit, run… | Base | Developer tools | $0.03 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/settlement-assurance Settlement assurance for a completed x402 payment on Base or Solana: confirm the transaction succeeded (0x hash or base58 signature), match the USDC transfer to an expected wallet and amount, format a receipt, and optio… | Base | Onchain data | $0.03 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/base/wallet-report One-call Base wallet profile: USDC balance, recent USDC transfers in/out, EOA-vs-contract type, and x402 Bazaar merchant listings if the address is a payTo. Bundles four on-chain lookups into a single paid call. | Base | Onchain data | $0.04 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/deep-read AI Deep Read: fetches up to five pages, reads them, and synthesizes a sourced answer to your question via Workers AI. Input is capped for predictable cost. Pass urls=<comma-separated> and question=<your question>. | Base | Search | $0.05 | 2026-09-18 |
https://quartermaster.surewhynot.app/v1/x402/audit-pro Deep x402 audit: the full endpoint audit plus a live probe for rail coverage (Base/Solana), multi-rail detection, HTTP status, and latency — a premium trust report on any x402 endpoint. | Base | Developer tools | $0.05 | 2026-10-05 |
https://quartermaster.surewhynot.app/v1/x402/scout Bazaar Scout: searches the Coinbase Bazaar for a capability, live-probes the top candidates (still returning HTTP 402? how fast?), and returns a ranked shortlist with a best-value pick — a vetted result set, not a raw l… | Base | Other | $0.05 | 2026-09-18 |
Descriptions are the seller’s own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.
Data CC-BY-4.0, attribution: data by satohub.ai. Collector run 2026-10-05. Appearing here is not an endorsement. Check an endpoint with the doctor.