# MyceliaSignal US GDP Oracle

> MyceliaSignal US GDP Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $1/call, status unknown (last checked 2026-09-13).

Returns the current US GDP figure as an Ed25519-signed attestation for on-chain or verifiable use

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/econ/us/gdp
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-myceliasignal-com-792ac244
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HjN9Ov3TftMsuiUh2yloO

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-792ac244
```

Example prompt: Can you fetch the latest US GDP figure from the MyceliaSignal oracle — I need it with the Ed25519 signed attestation so I can verify it on-chain.

## When to prefer this

Use this endpoint when you need US GDP data that is cryptographically attested and verifiable — particularly for smart contracts, on-chain oracles, or any workflow where data provenance and tamper-resistance are required. Prefer it over plain REST economic data APIs when the consumer needs to independently verify the data source's signature.

## Known failure modes

- Payment not received or x402 payment flow failed — returns 402 Payment Required
- Upstream GDP data source unavailable — service may return 503 or stale data
- Invalid or expired signature if key rotation has occurred
- Rate limit or quota exceeded — returns 429 Too Many Requests

## How this service works

US GDP growth rate — quarterly economic output for macro regime and recession risk — Ed25519 signed attestation

## Output

Returns the current US GDP value along with an Ed25519 cryptographic signature attesting to its authenticity, enabling downstream verification of data integrity by any consumer.

## 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-792ac244/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)