# MyceliaSignal EUR/CHF Price Oracle

> MyceliaSignal EUR/CHF Price Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-16).

Returns the current EUR/CHF exchange rate as an Ed25519-signed cryptographic attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/price/eur/chf
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-myceliasignal-com-acffb3b0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_B7xf8JZ1XFz708lr0Lmw8

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 api-myceliasignal-com-acffb3b0
```

Example prompt: What's the current EUR/CHF exchange rate? I need a cryptographically signed oracle attestation so I can verify its authenticity on-chain.

## When to prefer this

Choose this endpoint when you need a cryptographically verifiable EUR/CHF exchange rate — especially for smart contracts, DeFi protocols, or any use case requiring tamper-evident proof of the price. The Ed25519 signed attestation distinguishes it from plain REST forex APIs. Prefer it over unauthenticated price feeds when on-chain or auditability requirements demand proof of data provenance.

## Known failure modes

- Price feed temporarily unavailable — upstream data source outage
- Payment not provided or rejected (x402 payment required error)
- Invalid or expired payment — 402 response
- Network timeout or service downtime — 503/504 response
- Rate limiting if too many requests in short succession

## How this service works

EUR/CHF forex exchange rate — euro to Swiss franc safe-haven rate — Ed25519 signed attestation

## Output

Returns the current EUR/CHF spot exchange rate accompanied by an Ed25519 cryptographic signature, allowing consumers to verify the authenticity and integrity of the price data. Typical response includes the rate value, a timestamp, and the attestation signature.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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/api-myceliasignal-com-acffb3b0/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)