Problocks alternatives
10 x402 payment APIs compared with Problocks: the price per call read from each 402, x402 grade, uptime and median response time from our own daily unpaid checks.
Problocks for reference
Payment infrastructure for AI agents and APIs: per-call billing, usage metering and payment integration.
Up · x402 grade A (90/100) · 100% up (14/14 checks) · $0.001 per call in its 402 · 459 ms median
10 Problocks alternatives compared
Ranked by x402 grade, then uptime from our daily checks, then x402 score and response time. Price is shown but never used for ranking; “lower” or “higher” compares with Problocks’s $0.001 per call. Paid placement never changes the order.
Higher x402 score (95 vs 90); faster median response (300 ms vs 459 ms)
- x402 grade
- A (95/100)
- Uptime (checks so far)
- 100% (14/14)
- Price in 402
- $0.01 (higher)
- Response
- 300 ms
Higher x402 score (95 vs 90); also pays on Solana
- x402 grade
- A (95/100)
- Uptime (checks so far)
- 100% (14/14)
- Price in 402
- $0.05 (higher)
- Response
- 371 ms
Faster median response (360 ms vs 459 ms)
- x402 grade
- B (85/100)
- Uptime (checks so far)
- 100% (14/14)
- Price in 402
- $0.01 (higher)
- Response
- 360 ms
Grade B, 100% up so far, $0.001 per call; no measured edge over Problocks
- x402 grade
- B (85/100)
- Uptime (checks so far)
- 100% (14/14)
- Price in 402
- $0.001
- Response
- 381 ms
- 5. VaayaUp
Faster median response (250 ms vs 459 ms)
- x402 grade
- B (80/100)
- Uptime (checks so far)
- 100% (14/14)
- Price in 402
- $0.01 (higher)
- Response
- 250 ms
- 6. LocusUp
Higher x402 score (100 vs 90)
- x402 grade
- A (100/100)
- Uptime (checks so far)
- 100% (14/14)
- Price in 402
- $0.008 (higher)
- Response
- 415 ms
Also pays on Solana
- x402 grade
- A (90/100)
- Uptime (checks so far)
- 100% (14/14)
- Price in 402
- $0.002 (higher)
- Response
- 818 ms
Grade B, 100% up so far, $0.01 per call; no measured edge over Problocks
- x402 grade
- B (85/100)
- Uptime (checks so far)
- 100% (14/14)
- Price in 402
- $0.01 (higher)
- Response
- 664 ms
- 9. BAGSUp
Grade C, 100% up so far, $0.01 per call; no measured edge over Problocks
- x402 grade
- C (75/100)
- Uptime (checks so far)
- 100% (14/14)
- Price in 402
- $0.01 (higher)
- Response
- 735 ms
Also pays on Solana and Algorand
- x402 grade
- C (70/100)
- Uptime (checks so far)
- 100% (14/14)
- Price in 402
- $0.01 (higher)
- Response
- 427 ms
Prices are what each endpoint’s 402 asked for at our last check, for the one endpoint we check. Each API does its own job and other routes may be priced differently, so a lower price is not like-for-like. Check the provider before paying.
Problocks alternatives FAQ
What are the best alternatives to Problocks?
By our ranking (x402 grade, then uptime from our daily checks, then x402 score and response time): AgentPay, Spraay, Countersign. Each does its own job, so check that its endpoints cover what you use Problocks for.
Is there a cheaper alternative to Problocks?
No. None of the 10 alternatives asked for less per call than Problocks's $0.001 in their 402 at our last check. Prices are for the endpoint we check; other routes may differ.
How are these alternatives ranked?
Same category, ranked by x402 grade, then uptime from our own daily unpaid checks, then x402 score, valid x402 share and median response time. Price is shown but never used for ranking, and paid placement never changes the order.
Problocks review·Problocks status·payment APIs status·Best payment APIs·Uptime leaderboard
Data as of Nov 10, 2026, 7:19 AM ET. One unpaid request per listing per day to its example endpoint; up means any answer below HTTP 500 except 404/410 within 8 seconds. The x402 grade comes from x402fix, our free unpaid check of each 402 payment request; it rates the payment request, not uptime, and is not an endorsement. Listings with no check yet, no price read from a 402, or a check we are fixing are left out.
Building an x402 API? Free x402 course + launch help inside
Join the community