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MyceliaSignal US Core CPI Oracle
x402
MyceliaSignal US Core CPI 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 latest US Core CPI (Consumer Price Index excluding food and energy) as a cryptographically signed Ed25519 attestation
Price / call$1
Success—
StatusUnknown
How this service works
US Core CPI ex food and energy — key Fed inflation target for interest rate decisions — Ed25519 signed attestation
Output
A JSON payload containing the current US Core CPI value (excluding food and energy), accompanied by an Ed25519 digital signature and metadata such as timestamp, enabling consumers to cryptographically verify the data's authenticity and integrity.
Example use cases
Example prompt
“What's the latest US Core CPI reading? I need a cryptographically signed Ed25519 attestation I can verify for on-chain use.”
Technical details
Endpoint
GEThttps://api.myceliasignal.com/oracle/econ/us/cpi_coreWhen to prefer
Choose this endpoint when you need a tamper-evident, cryptographically signed US Core CPI value — particularly for smart contracts, DeFi protocols, or any system requiring verifiable off-chain economic data with an Ed25519 proof of authenticity. Prefer over raw data feeds when trust and non-repudiation matter.
Side effects
- Payment not received — returns HTTP 402 if USDC payment of $1 is not attached
- Service unavailable — returns 5xx if the oracle backend is down or CPI data feed is stale
- Invalid request format — returns 400 if query parameters are malformed
- Data freshness issue — attestation may reference a prior BLS release if new data is not yet published
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"unit": "index198284100",
"value": "335.803",
"period": "2026-04",
"pubkey": "f4f0e52b5f7b54831f965632bf1ebf72769beda4c4e3d36a593f7729ec812615",
"region": "us",
"seriesid": "CUUR0000SA0L1E",
"canonical": "v1|ECON|US|CPI_CORE|335.803|index198284100|2026-04|2026-06-06|BLS|CUUR0000SA0L1E|directapi|1780704000|309086",
"createdat": "2026-06-06",
"indicator": "cpi_core",
"signature": "1c56d8c91dd19a00e1e9acc280745f78f74d2372ae855cdaaa80b75152c055f0d41ccad5d4fde9d135f4c5e524b495635aebd71ed4f2fbdac1297ca5db6f6b0b",
"sourcemodel": "directapi",
"vintagedate": "2026-06-06",
"sourceagency": "BLS",
"signingScheme": "ed25519"
}Tags
x402
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