promptqualityscore.com/api/pqs-grade

promptqualityscore.com · x402

Quick pre-flight quality score: composite (0-100) + grade (A-F) + three framework sub-scores (PEEM, RAGAS, G-Eval) + verdict. Run upstream of any other paid call to filter weak prompts before inference. The cheapest gate on the AI input quality problem.

Name and description as published by x402 Bazaar

Live

Last successful check: 9 Nov 2026, 03:44 UTC.

answered, last 24 hours: 100%
answered, last 30 days: 100%

1 wallet paid it in the last 30 days, as the x402 Bazaar reports. Payments

How addrbook checks →

Evidence

1 of 4 shown

Answers when askedShown
Answered a check 25 hours ago.
Owner provenNot shown
No one has proven control of its domain or of the wallet it is paid at.
Track recordNot shown
Listed for 14 days; 30 are needed.
Independent paying walletsNot shown
1 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed.
Tool scanDoes not apply
Not an MCP server.

Decided 9 Nov 2026, 00:47 UTC by method 2026.10.2, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://promptqualityscore.com/api/pqs-grade

x402: an unpaid request gets a 402 with the price and pay-to wallet. addrbook never pays.

Who's behind it

Listed by: x402 Bazaarlast seen 8 Nov, 20:44 UTC
Wallets named: 0xb40a687ca5483ebc02f870348f6e08971cae1308named by x402 Bazaar
Proven to belong to it: Nothing yet. Is it yours?
Listed since: 25 Oct 2026, 17:52 UTC

Payments

different wallets paid it, last 30 days: 1
paid calls, last 30 days: 1
last paid call (UTC): 26 Oct, 09:45

As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read 8 Nov 2026, 20:44 UTC. addrbook has not counted these payments itself.

How it asks to be paid

Network	Price	Paid in	Settled by	Pays to
Base	$0.001	USDC	Per request	0xb40a687ca5483ebc02f870348f6e08971cae1308

From its own 402 answer at 9 Nov, 03:44 UTC. USDC and Circle Gateway are recognised by their contract addresses, not by the names a seller gives them. How payments are read

Checks by endpoint

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
promptqualityscore.com	x402	Live	9 Nov, 03:44	9 Nov, 03:44	100%	100%	—

History

7 Nov 2026, 20:33 UTCThe x402 Bazaar now reports 1 paying wallets over 30 days.the x402 Bazaar#3970163
1 Nov 2026, 19:06 UTCThe x402 Bazaar now reports 2 paying wallets over 30 days.the x402 Bazaar#1791793
26 Oct 2026, 23:14 UTCPayment terms first read: $0.001 on Base, paid to 0xb40a687ca5483ebc02f870348f6e08971cae1308.https://promptqualityscore.com/api/pqs-grade#305410
26 Oct 2026, 23:14 UTCFirst recorded as answering.https://promptqualityscore.com/api/pqs-grade#305409
26 Oct 2026, 14:36 UTCListed by the x402 Bazaar. The listing names wallet 0xb40a687ca5483ebc02f870348f6e08971cae1308.the x402 Bazaar#48546

Its whole history →

Also listed as

Other entries that share an endpoint with this one.

promptqualityscore.com

Is it yours?

Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent

Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.

[![addrbook evidence](https://api.addrbook.com/v1/agents/promptqualityscore-com-api-pqs-grade-dd6f9b58/badge.svg)](https://addrbook.com/agents/promptqualityscore-com-api-pqs-grade-dd6f9b58)