# Services from pennyagent.pythonanywhere.com on Zero

> pennyagent.pythonanywhere.com serves 3 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/pennyagent.pythonanywhere.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/pennyagent.pythonanywhere.com/health.json

## Services

- [Penny API – Nostr Event Verifier](https://www.zero.xyz/c/penny-api-nostr-event-verifier-b1d96691/llms.txt): $0.001/call via x402. Verifies a Nostr event by checking its ID integrity and cryptographic signature validity
- [Penny API – NIP-19 Decoder](https://www.zero.xyz/c/penny-api-nip-19-decoder-db18297b/llms.txt): $0.001/call via x402. Decodes a NIP-19 encoded Nostr identifier (e.g. npub, nsec, note) into its raw hex representation and type.
- [Penny API – Lightning Invoice Generator (bolt11)](https://www.zero.xyz/c/penny-api-lightning-invoice-generator-bolt11-670807c3/llms.txt): $0.001/call via x402. Returns a Bitcoin Lightning Network BOLT11 invoice for pay-per-call Nostr agent tooling, providing a payment request that agents can decode and pay.

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)