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shelf.thirdmade.net probe prompt-guard
https://shelf.thirdmade.net/probe/prompt-guard
answers 402
Scores prompt-injection / jailbreak risk for LLM inputs. Agent builders use this to sanitize user inputs before hitting their LLM.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x315708415764b7F2B783714cE82cf9C628e33fCF
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 445 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:19:15.324Z (32d ago)
- Category
- ai-inference
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fshelf.thirdmade.net%2Fprobe%2Fprompt-guard"