# MyeliaSignal WBTC Best Supply Yield Oracle

> MyeliaSignal WBTC Best Supply Yield Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns the best WBTC supply yield available across all DeFi protocols and chains, delivered as an Ed25519-signed attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/defi/yield/best/wbtc
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/myeliasignal-wbtc-best-supply-yield-oracle-75ff5b74
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KYmJnMtE3Y7ohRqsa3-au

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 myeliasignal-wbtc-best-supply-yield-oracle-75ff5b74
```

Example prompt: What's the best WBTC supply yield available right now across all DeFi protocols and chains? I want a cryptographically signed attestation so I can trust the result.

## When to prefer this

Use this endpoint when you need a single, trustworthy, cryptographically attested answer to 'what is the best WBTC yield available right now?' without having to query and normalize multiple DeFi protocols yourself. The Ed25519 signature makes it suitable for use cases requiring verifiable data provenance. Prefer this over manual aggregation when you need a fast, signed, cross-chain and cross-protocol comparison for WBTC specifically.

## Known failure modes

- Protocol data unavailable — upstream DeFi protocol APIs may be temporarily unreachable
- No yield opportunities found — WBTC may have no active lending markets at query time
- Signature verification failure — Ed25519 attestation may fail if key rotation occurred
- Payment failure — $0.05 USDC micropayment not completed, returns 402
- Rate limiting — too many requests in a short window

## How this service works

Best WBTC supply yield across all protocols and chains — Ed25519 signed attestation

## Output

Returns the highest WBTC supply yield currently available, including the APY/APR rate, the protocol offering it, the chain it is on, and an Ed25519 cryptographic signature attesting to the data's authenticity and provenance.

## 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/myeliasignal-wbtc-best-supply-yield-oracle-75ff5b74/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.myceliasignal.com](https://www.zero.xyz/host/api.myceliasignal.com/llms.txt)