# MycealiaSignal ETH/USD Spot Price OHLCV History

> MycealiaSignal ETH/USD Spot Price OHLCV History is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns Ed25519-signed OHLCV candlestick history for ETH/USD spot price across multiple timeframes (1m, 5m, 1h, 4h, 1d) for up to 60 days

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/history/spot/eth/usd
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mycealiasignal-eth-usd-spot-price-ohlcv-history-e609b5a7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qIcvksnPo9_ZBWpl75kYt

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 mycealiasignal-eth-usd-spot-price-ohlcv-history-e609b5a7
```

Example prompt: Pull me the signed ETH/USD OHLCV history from MycealiaSignal at the 1-hour interval for the last 30 days so I can verify the data integrity using the Ed25519 attestation before feeding it into my on-chain oracle.

## When to prefer this

Choose this endpoint when you need cryptographically attested historical ETH/USD OHLCV price data — especially for DeFi protocols, smart contract oracles, or any system requiring tamper-evident, verifiable price history. Prefer this over unauthenticated data sources when downstream consumers need to verify data provenance on-chain or in trustless environments.

## Known failure modes

- Requested interval not supported (only 1m, 5m, 1h, 4h, 1d allowed)
- Lookback period exceeds 60-day maximum
- Payment failure or missing x402 payment header
- Rate limiting if too many requests in short succession
- Signature verification failure on client side if public key mismatch

## How this service works

ETH spot price history — signed OHLCV, 1m/5m/1h/4h/1d intervals, up to 60 days. — Ed25519 signed attestation

## Output

A time-series array of OHLCV candlestick records for ETH/USD, each containing open, high, low, close prices and volume for the requested interval, cryptographically signed with Ed25519 to enable trustless verification of data authenticity and integrity.

## 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/mycealiasignal-eth-usd-spot-price-ohlcv-history-e609b5a7/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)