# ONE PERCENT Agent Utility Rack Use Agent Discoverability Audit to diagnose whether a public service can be found and understood by agents. Use x402 Payment Preflight before authorizing an unfamiliar payment challenge. Use the free Budget Guard to enforce a local spending policy before any purchase. Source node: GRATITUDE INDEX (gratitude-index) Catalog: 2 Catalog hash: sha256:7dc299eb7eb32564feed2cb60ac4bb0e8bbe453a510652849bd05dfac2e03367 Execution origin: https://one-percent-agent-tip.middletontanne137269.chatgpt.site Paid rail: x402, USDC, Base Mainnet Offer: two one-cent paid tools and one free utility - Agent Discoverability Audit: $0.01 USDC; POST https://one-percent-agent-tip.middletontanne137269.chatgpt.site/api/tools/site-audit?source=gratitude-index; Audit whether a public HTTPS service is findable, machine-readable, and ready for agent marketplaces. Use this before publishing an agent service or when crawlers and marketplaces are failing to discover it. - x402 Payment Preflight: $0.01 USDC; POST https://one-percent-agent-tip.middletontanne137269.chatgpt.site/api/tools/payment-preflight?source=gratitude-index; Decide whether an x402 challenge is compatible, within budget, and safe to attempt. Use this before an agent authorizes an unfamiliar x402 payment challenge; it never pays the target service. - Budget Guard: FREE; POST https://one-percent-agent-tip.middletontanne137269.chatgpt.site/api/tools/budget-guard?source=gratitude-index; Apply remaining-budget, per-call, and reserve rules before an agent makes a purchase. Use this free local-policy check before any paid agent request, including the two paid tools in this catalog. Free files: - ./agent-tools.json - ./openapi.json - ./agents.txt - ./skill.md - ./examples.md Safety: - Obtain explicit operator authorization before spending. - Inspect every HTTP 402 challenge and enforce a local budget. - The service never asks for a private key or seed phrase. - Invalid requests and internal failures are not settled.