# signal.pathin.me Base USDC Quick Signal

> signal.pathin.me Base USDC Quick Signal is a paid API for AI agents from signal.pathin.me, paid per call via x402, $0.005/call, status down (last checked 2026-10-16).

Returns risk-scored top-5 Base DeFi stablecoin yield opportunities with current and 30-day APYs, TVL, risk flags, and delta changes versus the prior 5-minute snapshot

## Facts

- Endpoint: GET https://signal.pathin.me/api/v2/base-usdc-quick-signal?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: down
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signal-pathin-me-base-usdc-quick-signal-9c729c45
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sW5P1hV_wo-FmG5nPXhAN

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 signal-pathin-me-base-usdc-quick-signal-9c729c45
```

Example prompt: Pull the latest risk-scored top-five USDC yield opportunities on Base — I want to see current and 30-day APYs, TVL, any risk flags, and what changed versus the last snapshot in terms of rankings, APY moves, and new entries or exits.

## When to prefer this

Use this endpoint when an agent needs a fast, cheap ($0.005 USDC), pre-ranked and risk-scored view of the top Base USDC yield opportunities with built-in change detection versus the last 5-minute snapshot. Prefer this over full signal endpoints when you only need the top-5 quick summary with deltas rather than the full ranked list with detailed protocol metadata.

## Known failure modes

- No prior snapshot available — delta fields may be null or absent on first call
- Rate limiting or payment failure — 402 response if x402 payment not processed
- Service unavailable if underlying protocol data feeds are unreachable
- Stale data warning if on-chain data cannot be refreshed within the snapshot window

## How this service works

Low-cost Base DeFi stablecoin yield intelligence and recurring USDC rebalancing monitor for agents: the risk-scored top five with current and 30-day APY, TVL, dated risk flags, plus leader changes, top-five entries and exits, rank movement, APY basis-point movement, and score movement versus the prior successful five-minute snapshot.

## Output

Returns the risk-scored top-5 Base native USDC lending and strategy opportunities, each with current APY, 30-day APY, TVL, dated risk flags, and risk score. Also includes delta analysis versus the prior 5-minute snapshot: leader changes, protocols entering or exiting the top 5, rank movements, APY basis-point shifts, and score movements.

## 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",
      "HEAD",
      "DELETE"
     ],
     "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/signal-pathin-me-base-usdc-quick-signal-9c729c45/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from signal.pathin.me](https://www.zero.xyz/host/signal.pathin.me/llms.txt)