paysponge.com — agent-tools.cloud

Returns listings of properties available for sale. -- reliability 64.05708312988281/100 per Paygent Discover

Paid verification

No sponsored paid call yet.

Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.

Quality grade

How grading works

C+ 51.6 / 100

Availability 20.0 / 20

Endpoint responded (HTTP 402)

Payability 10.0 / 15

✓ Answers a real HTTP 402 challenge
✓ Publishes a /.well-known/x402 descriptor
✗ Payment address on record
✗ Settlement network declared
✗ Price declared

Demand 0.0 / 35

No payment address on record, so demand cannot be measured

Performance 10.0 / 10

Last probe answered in 131 ms (full marks at 200 ms or less)

Readiness 11.6 / 15

Agent readiness 77/100

Owner verified 0.0 / 5

Nobody has claimed this listing yet

Endpoint last checked 18 h ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass. This grade sets search order and leaderboards; the readiness score below is shown for reference only.

x402 readiness

B · 77/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here C+, 51.6/100), which weighs availability, payability and on-chain demand. How the two differ

Valid payment requirements	0/10	No payment requirements on record.
Live 402 challenge	25/25	Paid endpoint answers with an HTTP 402 challenge (131 ms).
x402 version	n/a	x402 version not observed yet.
Signed descriptor	n/a	No x402 standard defines a signed descriptor.
Uptime (30 days)	15/15	32/32 probes succeeded over 30 days (100%).
Resource declaration	8/10	7 paid resources; 7 sampled lack a description.
Verified identity	5/10	Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
Freshness + modern flags	5/5	seen in a source within 7 days; declares x402.
Security declaration	n/a	Payment is the access control for an x402 resource.

Applicable criteria total 75 points, scaled to 100.

Responsiveness: Responsive (131 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).

Payment evidence: x402_challenge — We sent a request and got a live HTTP 402 challenge. Also: x402_manifest, catalog_listing. Qualifies the payment claim; adds no points.

Measured 2026-11-11.

Nine criteria, the same as the A2A readiness score, read from our daily probe of the paid endpoint, its payment requirements and 30-day probe history. Signed descriptor and security declaration are n/a for x402 (payment is the access control), as is an x402 version we have not observed; the remaining points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. It also feeds 15 points of the x402 quality grade.

Compared with peers

Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.

Readiness: Higher than 50% of peers; This listing 77 · peer median 78
Latency: Faster than 75% of peers; This listing 131 ms · peer median 205 ms

Where it loses the most points, and how to win them back

Valid payment requirements −10 — Return complete payment requirements in the 402 challenge.
Now: No payment requirements on record.
Verified identity −5 — Claim the listing and prove control of its domain.
Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
Resource declaration −2 — Declare each paid resource with its input and output schema.
Now: 7 paid resources; 7 sampled lack a description.

How many agent tools actually work · All statistics

Paid endpoints

7 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.

https://rentcast.x402.paysponge.com/listings/sale

https://rentcast.x402.paysponge.com/properties/random

https://rentcast.x402.paysponge.com/avm/value

https://rentcast.x402.paysponge.com/properties

https://rentcast.x402.paysponge.com/listings/rental/long-term

https://rentcast.x402.paysponge.com/avm/rent/long-term

https://rentcast.x402.paysponge.com/markets

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -sS -i -X GET https://rentcast.x402.paysponge.com/  # expect HTTP 402 Payment Required (price advertised in the 402 response)

/.well-known/x402.json

https://rentcast.x402.paysponge.com/.well-known/x402

Listed in

Directories this entry was found in.

paygent-discover since 2026-07-02