# Services from fixledger-iota.vercel.app on Zero

> fixledger-iota.vercel.app 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/fixledger-iota.vercel.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/fixledger-iota.vercel.app/health.json

## Services

- [FixLedger Post-Cutoff SDK Delta Oracle](https://www.zero.xyz/c/fixledger-post-cutoff-sdk-delta-oracle-3da70134/llms.txt): $0.003/call via x402. Returns a structured migration spec or active model/pricing matrix for a specified post-cutoff topic key, unlocked via micropayment.
- [FixLedger Verified Bug Fix Unlock (x402 Pay-on-Proof)](https://www.zero.xyz/c/fixledger-verified-bug-fix-unlock-x402-pay-on-proof-3e5822c8/llms.txt): $0.005/call via x402. Unlocks a Docker-verified bug fix resolution — including root cause, surgical patch diff, and anti-patterns — for a given error ID after a $0.005 USDC micropayment on Base.
- [FixLedger Pulse Check](https://www.zero.xyz/c/fixledger-pulse-check-025b1718/llms.txt): $0.002/call via x402. Checks the real-time operational status of a target API, LLM, RPC, or x402 facilitator domain, returning a verified pulse verdict or free outage alert.

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)