# YieldSignal WETH-Base Exit Capacity

> YieldSignal WETH-Base Exit Capacity is a paid API for AI agents from yieldsignal.vercel.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-28).

Returns per-protocol utilization and withdrawable exit liquidity for WETH lending on Base, with an optional size-based exit verdict.

## Facts

- Endpoint: GET https://yieldsignal.vercel.app/capacity/weth-base-yield?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/yieldsignal-weth-base-exit-capacity-8043da06
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__gdAXl3nYNRljeZYANMNB

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 yieldsignal-weth-base-exit-capacity-8043da06
```

Example prompt: Check if I can exit a $200,000 WETH lending position on Base right now — I need to know which protocols have enough free liquidity and what their current utilization looks like.

## When to prefer this

Use this endpoint when you need real-time exit capacity and utilization data specifically for WETH lending on Base. Prefer this over the USDC capacity route when the asset in question is WETH. Note: because USD figures are omitted (no price oracle), if you need a dollar-denominated size verdict, pair this with the USDC capacity route. Use the /accuracy.json endpoint for free verification of per-asset accuracy before relying on the data for large position decisions.

## Known failure modes

- Missing or unavailable on-chain data for a specific protocol — unmeasured protocols are named but not given liquidity figures
- amountUsd provided but no USD verdict returned because WETH price oracle is not available in the paid path
- Network or RPC issues causing stale or partial utilization data
- Invalid query parameter type for amountUsd (non-numeric)
- Payment failure or insufficient USDC balance for the $0.01 fee via x402

## How this service works

Exit capacity for WETH lending on Base — same contract as the USDC capacity route. Utilization is reported for every measured protocol; USD figures are omitted for WETH (no price oracle in the paid path), so size verdicts need the USDC route. Unmeasured protocols are named, never assumed liquid. Verified per-asset accuracy is free at /accuracy.json; raw on-chain attestations at /track-record.

## Output

Returns per-protocol utilization percentages and withdrawable WETH liquidity figures for each measured protocol on Base. Unmeasured protocols are listed by name without assumed liquidity. If amountUsd is provided, includes a size verdict on whether the exit is feasible. USD figures are not included (no price oracle); use the USDC capacity route for USD-denominated size verdicts.

## 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": {
      "amountUsd": {
       "type": "number",
       "description": "Position size in USD to test for exit. Omit to get utilization and free liquidity without a verdict."
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/yieldsignal-weth-base-exit-capacity-8043da06/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from yieldsignal.vercel.app](https://www.zero.xyz/host/yieldsignal.vercel.app/llms.txt)