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Clink Forge State GDP Series
x402
Clink Forge State GDP Series is a paid API for AI agents from api.clinkforge.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Retrieves a time-series of U.S. state-level GDP data from government sources, with cryptographic provenance and attestation, paid per-call via x402/USDC.
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay per call over x402. USDC on Base, no account, no API key. 28 government-sourced data products at $0.001–$0.05 per call, every response signed and provenance-chained.
Output
Returns an array of GDP data rows for the specified state and date range, along with a provenance chain (source URL, observing authority, hash, and timestamp), a cryptographic attestation (signature, result digest, signing key ID), and a payment receipt confirming the $0.02 USDC per-call transaction. Each record includes a unique record ID.
Example use cases
State economic trend analysis
“Get me the GDP series for Texas from 2010 to 2022 with provenance, so I can chart how the state economy grew over that period.”
Multi-state GDP comparison research
“Fetch the GDP time series for New York from 2018 to 2023 — I want the signed, government-sourced data so I can compare it against other states reliably.”
Verifiable data for automated reporting
“Retrieve the state GDP series for Florida from 2020 to 2023 with the full attestation signature — my pipeline needs cryptographic proof that the data came from an official government source.”
Technical details
Endpoint
GEThttps://api.clinkforge.com/v1/p/state-gdp-seriesWhen to prefer
Choose this endpoint when you need U.S. state-level GDP time series data with cryptographic provenance and attestation — especially when downstream consumers need to verify data authenticity without trusting a centralized API key-gated provider. Ideal for autonomous agents that can pay per-call in USDC without account setup, and for pipelines that require auditable, signed government-sourced economic data. Prefer alternatives if you need real-time GDP estimates, non-U.S. GDP data, or GDP at the county/metro level.
Side effects
- Payment not settled — x402 payment flow fails or USDC balance insufficient, resulting in 402 response with no data
- Invalid entity code — unrecognized state code returns empty data or error
- Date range out of bounds — start/end dates outside available data window return empty rows
- Network timeout — upstream government data source temporarily unavailable
- Malformed query parameters — non-ISO date strings or oversized entity codes rejected at schema validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": [
{
"field": "value",
"_record_id": "R-100"
}
],
"product": "example-product",
"row_count": 1,
"provenance": [
{
"hash": "sha256...",
"authority": "AGENCY",
"source_url": "https://agency.gov/data",
"observed_at": "2026-08-25T00:00:00Z"
}
],
"attestation": {
"signature": "base64...",
"result_digest": "sha256...",
"signing_key_id": "forge-signing-1"
},
"payment_receipt": {
"amount_usd": 0.01,
"settlement_ref": "0xtx..."
},
"product_version": 1
},
"description": "data rows + provenance chain + attestation"
}Tags
x402
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