# Services from dev.kagurazaka.dev on Zero

> dev.kagurazaka.dev serves 7 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/dev.kagurazaka.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/dev.kagurazaka.dev/health.json

## Services

- [x402 Dev Tools – API Origin Linter](https://www.zero.xyz/c/x402-dev-tools-api-origin-linter-ef8d7e2a/llms.txt): $0.01/call via x402. Lints an x402 API origin by fetching its OpenAPI and discovery docs, probing paid routes without payment, and reporting 402 compliance errors, price mismatches, and missing Bazaar extensions.
- [x402 Dev Tools – Build PaymentRequired Object](https://www.zero.xyz/c/x402-dev-tools-build-paymentrequired-object-7cae3ba9/llms.txt): $0.002/call via x402. Generates a fully-formed x402 v2 PaymentRequired object and base64 PAYMENT-REQUIRED header value for a given USD price across one or more networks, with correct USDC contract addresses, atomic amounts, and EIP-712 domain info.
- [x402 Facilitator Status Checker](https://www.zero.xyz/c/x402-facilitator-status-checker-895cc306/llms.txt): $0.003/call via x402. Polls all major x402 facilitators in real time and returns each one's availability, latency, supported x402 versions, payment schemes, and settlement networks.
- [x402 Network Registry Lookup](https://www.zero.xyz/c/x402-network-registry-lookup-af1f083d/llms.txt): $0.002/call via x402. Returns metadata for x402-supported blockchain networks including CAIP-2 IDs, chain IDs, USDC contract addresses, EIP-712 domain parameters, decimals, and block explorers.
- [x402 Dev Tools – Encode Header](https://www.zero.xyz/c/x402-dev-tools-encode-header-f828f774/llms.txt): $0.002/call via x402. Encodes an x402 PaymentRequired, PaymentPayload, or settlement response object into its base64 header value and reports validation findings.
- [x402 Dev Tools – Discovery Document Generator](https://www.zero.xyz/c/x402-dev-tools-discovery-document-generator-00336fbf/llms.txt): $0.003/call via x402. Generates OpenAPI 3.1, /.well-known/x402, and llms.txt discovery documents for a list of paid x402 API endpoints
- [x402 Dev Tools – Payment Header Decoder](https://www.zero.xyz/c/x402-dev-tools-payment-header-decoder-b22d2385/llms.txt): $0.002/call via x402. Decodes and explains x402 payment headers (PAYMENT-REQUIRED, PAYMENT-SIGNATURE, or PAYMENT-RESPONSE) in plain English, flagging validation issues like expired authorizations, wrong domains, or missing Bazaar extensions.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)