# Agent Weather x402 XRPL Price Index > Agent Weather x402 XRPL Price Index is a paid API for AI agents from api.agentweather.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-17). Returns a live price index of x402-payable API endpoints on XRPL mainnet, including cheapest provider per capability category, price distribution, and price drift since the previous cycle. ## Facts - Endpoint: GET https://api.agentweather.io/v1/price-index?utm_source=zero.xyz - Price: $0.005/call - Payment: x402 - Status: unknown - Last checked: 2026-10-17 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/agent-weather-x402-xrpl-price-index-88f2c14f - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_F6CxlSTVVh-O-t16AFKUJ Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability agent-weather-x402-xrpl-price-index-88f2c14f ``` Example prompt: Before I start paying for x402 APIs on XRPL, pull the current Agent Weather price index so I can see which capability categories have the cheapest live providers and how prices are distributed right now. ## When to prefer this Use this endpoint when an agent needs to compare costs across multiple x402-payable API categories on XRPL mainnet before committing to a payment, or when building cost-aware routing logic that selects the cheapest live provider. Prefer this over individual endpoint probes when you need a broad market view rather than a single-endpoint preflight check. ## Known failure modes - No live endpoints found if the XRPL mainnet has no valid 402 responses in the current cycle - Stale data if the health checker cycle is delayed - POST-only or unprobed resources are excluded from the live index - Price drift data unavailable if this is the first cycle ## How this service works Use when you want to compare what XRPL x402 resources cost per category before buying. Price index of live x402 resources payable on XRPL mainnet: cheapest live provider per capability category, USD-normalised price distribution, every live endpoint with its rails, and price changes since the previ… ## Output A JSON object containing: the current cycle number and timestamp, XRP/USD rate, a list of all live x402 endpoints with their payment rails and USD-normalized prices, per-category summaries (cheapest provider, median price, live endpoint count), a USD price distribution with percentile bands, and price changes since the previous cycle. Also includes methodology references and data gap disclosures. ## Request schema (JSON Schema) ```json { "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "input" ], "properties": { "input": { "type": "object", "required": [ "type", "method" ], "properties": { "type": { "type": "string", "const": "http" }, "method": { "enum": [ "GET" ], "type": "string" }, "queryParams": { "type": "object", "properties": {}, "additionalProperties": false } }, "additionalProperties": false }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "type": "string" }, "example": { "type": "object", "required": [ "example_data", "schema_version", "issued_at", "index", "sources", "data_gaps", "methodology" ], "properties": { "index": { "type": [ "object", "null" ] }, "sources": { "type": "array" }, "data_gaps": { "type": "array" }, "issued_at": { "type": "string", "format": "date-time" }, "report_id": { "type": "string" }, "methodology": { "type": "object" }, "example_data": { "const": false }, "schema_version": { "type": "string" } }, "additionalProperties": true } } } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "index": { "as_of": "2026-10-12T02:31:28.000Z", "cycle": 516, "scope": "x402 resources payable on XRPL mainnet (xrpl:0) that returned a valid 402 to our unpaid GET in this cycle", "xrp_usd": 1.40682, "endpoints": [ { "url": "https://x402.asksurf.ai/x402/xrpl/tools/ask_surf_chat", "name": null, "rails": [ { "usd": 0.0005, "asset": "RLUSD", "units": 0.0005, "amount": "0.0005", "issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De", "usd_method": "USD stablecoin at 1.00" } ], "origin": "https://x402.asksurf.ai", "pay_to": "ra9b6JX5aPVbdJhogDDddsRAcasWg7gzC3", "category": "inference_llm", "cheapest_usd": 0.0005, "cheapest_rail": "RLUSD" } ], "categories": [ { "max_usd": 19.999574, "category": "market_data", "cheapest": { "url": "https://api.printmoneylab.com/api/v1/xrpl/fx-rate", "usd": 0.001, "name": null, "rail": "RLUSD", "rails": [ { "usd": 0.001, "asset": "RLUSD", "units": 0.001, "amount": "0.001", "issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De", "usd_method": "USD stablecoin at 1.00" } ], "origin": "https://api.printmoneylab.com" }, "median_usd": 0.01, "live_endpoints": 17 } ], "live_endpoints": 52, "distribution_usd": { "n": 52, "max": 19.999574, "min": 0.0005, "p25": 0.001407, "p75": 0.015551, "bands": [ { "band_usd": "0", "endpoints": 0 }, { "band_usd": "<0.001", "endpoints": 2 }, { "band_usd": "0.001-0.002", "endpoints": 13 }, { "band_usd": "0.002-0.005", "endpoints": 1 }, { "band_usd": "0.005-0.01", "endpoints": 9 }, { "band_usd": "0.01-0.02", "endpoints": 14 }, { "band_usd": "0.02-0.20", "endpoints": 8 }, { "band_usd": ">0.20", "endpoints": 5 } ], "median": 0.01 } }, "sources": [ { "url": "https://api.agentweather.io/v1/methodology#price-index", "name": "Agent Weather health checker: unpaid GET 402 responses and merchants' own /.well-known/x402", "observed_at": "2026-10-12T02:31:28.000Z" } ], "data_gaps": [ { "gap": "POST-only and unprobed resources", "reason": "only resources returning a valid 402 to a GET … (truncated) ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-weather-x402-xrpl-price-index-88f2c14f/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from api.agentweather.io](https://www.zero.xyz/host/api.agentweather.io/llms.txt)