# Robinhood Chain x402 Catalog Lag Report

> Robinhood Chain x402 Catalog Lag Report is a paid API for AI agents from ylk.one, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns a comparison of CDP catalog rows versus on-chain payTo addresses for Robinhood Chain (4663), surfacing off-catalog x402-ready earners and metered micro-band USDG lag metrics.

## Facts

- Endpoint: GET https://ylk.one/v1/robinhood/lag
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/robinhood-chain-x402-catalog-lag-report-d92d560c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__FTXqRop9xPhj3xhKRL5Q

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 robinhood-chain-x402-catalog-lag-report-d92d560c
```

Example prompt: Pull the current x402 catalog lag report for Robinhood Chain — I want to see which on-chain payTo addresses are earning USDG but missing from the CDP catalog, and how big the gap is right now.

## When to prefer this

Use this endpoint when you need to audit the completeness of the x402 CDP catalog against live on-chain settlement data on Robinhood Chain (4663), especially to discover earners who are actively receiving USDG micropayments but are not yet catalogued. Prefer this over the brief drill-down endpoint when you want the aggregate lag picture rather than a single-receiver deep dive.

## Known failure modes

- Chain RPC unavailable — on-chain payTo data cannot be fetched
- CDP catalog API unreachable — lag computation returns incomplete delta
- x402 payment required but not provided — 402 response with payment details
- No lag detected — returns empty delta if catalog is fully synced
- Rate limit exceeded — repeated calls within short window may be throttled

## How this service works

Robinhood Chain (4663) x402 catalog lag: CDP Bazaar rows vs unique on-chain payTos, off-catalog x402-ready earners, metered micro-band USDG receivers. Plain text from Paxos USDG Transfer — settle via Base USDC.

## Output

A JSON snapshot showing the delta between CDP catalog rows and on-chain payTo addresses on Robinhood Chain (4663), including off-catalog x402-ready earners, metered micro-band USDG lag figures, and a count of receivers missing from the catalog. Upgrade to /v1/robinhood/brief?a= for per-receiver drill-down.

## 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
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/robinhood-chain-x402-catalog-lag-report-d92d560c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ylk.one](https://www.zero.xyz/host/ylk.one/llms.txt)