# Barker Yield Advisor – Ranked Stablecoin Yield Recommendations

> Barker Yield Advisor – Ranked Stablecoin Yield Recommendations is a paid API for AI agents from mcp.barker.money, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-12).

Returns a ranked list of top stablecoin yield opportunities across 500+ DeFi protocols, with APY, risk flags, TVL, and data-derived reasons per pick.

## Facts

- Endpoint: GET https://mcp.barker.money/barker_yield_advisor?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/barker-yield-advisor-ranked-stablecoin-yield-recommendations-c91ba917
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X7BriDv2D7gCeKHVyfKMw

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 barker-yield-advisor-ranked-stablecoin-yield-recommendations-c91ba917
```

Example prompt: Show me the top 5 conservative USDC yield opportunities on Ethereum right now using Barker's yield index — I want ranked picks with APY, TVL, and risk flags so I can see which pools are incentive-dependent or have lock-up terms.

## When to prefer this

Use this endpoint when a user wants a curated, ranked shortlist of the best stablecoin yield opportunities rather than raw pool data. It is ideal for 'where should I put my stablecoins' queries where the agent needs opinionated, risk-annotated recommendations rather than exhaustive search results. Prefer this over the raw pool query endpoint when the user needs a quick top-N with reasoning, and over the single-pool dossier endpoint when the user hasn't yet identified a specific pool.

## Known failure modes

- Unsupported asset symbol returns empty or error response
- Chain filter with no matching pools returns empty list
- min_tvl set too high may yield zero results
- Rate limit or payment failure (x402) if USDC payment not processed
- Stale data if underlying protocol index has not refreshed recently

## How this service works

FLAGSHIP: 'Where should I park my stablecoins right now?' Returns a ranked top-N recommendation across Barker's DeFi yield index (500+ protocols) with data-derived reasons and risk flags per pick (APY vs market median, TVL depth, incentive-dependence, lock terms). Use for 'best place for my USDC', '钱放哪收益最好', 'recommend stablecoin yield with low risk'. APY unit: percent (6.2 = 6.2%).

## Output

A ranked list of up to N stablecoin yield pool recommendations, each including: APY (in percent), TVL, comparison to market median APY, risk flags (incentive-dependence, lock terms, TVL depth tier), and data-derived reasons explaining the ranking.

## 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": {
      "risk": {
       "enum": [
        "conservative",
        "balanced",
        "aggressive"
       ],
       "type": "string",
       "description": "Risk band → TVL floor $10M/$1M/$100K"
      },
      "asset": {
       "type": "string",
       "description": "Stablecoin symbol (lowercase): usdt, usdc, dai, usde, ..."
      },
      "chain": {
       "type": "string",
       "description": "Optional chain filter (lowercase)"
      },
      "limit": {
       "type": "integer",
       "maximum": 20,
       "minimum": 1,
       "description": "Top-N picks (default 5)"
      },
      "min_tvl": {
       "type": "number",
       "description": "Optional explicit TVL floor (USD)"
      }
     }
    }
   },
   "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/barker-yield-advisor-ranked-stablecoin-yield-recommendations-c91ba917/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp.barker.money](https://www.zero.xyz/host/mcp.barker.money/llms.txt)