# MiceliaSignal US Fed Funds Rate Oracle

> MiceliaSignal US Fed Funds Rate Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $1/call, status unknown (last checked 2026-09-14).

Returns the current US Federal Funds Rate as an Ed25519-signed cryptographic attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/econ/us/fedfunds
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-myceliasignal-com-f3219787
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4U_cz76rNVl33u8jM1azq

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-f3219787
```

Example prompt: What's the current US Federal Funds Rate? I need a cryptographically signed attestation I can verify — fetch it from the MiceliaSignal oracle.

## When to prefer this

Choose this endpoint when you need a tamper-evident, cryptographically attested US Federal Funds Rate value — especially in smart contract, DeFi, or automated financial workflows where verifiability via Ed25519 signature is required. Prefer this over unauthenticated REST data feeds when downstream systems need to independently verify the provenance and integrity of the rate data.

## Known failure modes

- Payment not received or x402 payment protocol failure — returns 402 Payment Required
- Network or upstream data provider unavailable — returns 503 or similar error
- Malformed or missing query parameters — returns 400 Bad Request
- Rate limiting or quota exceeded — returns 429 Too Many Requests

## How this service works

US Federal Reserve funds rate — current FOMC target for interest rate and bond trading — Ed25519 signed attestation

## Output

A signed data payload containing the current US Federal Funds Rate value along with an Ed25519 cryptographic signature that allows the receiver to verify the authenticity and integrity of the rate data.

## 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-f3219787/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)