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Clink Forge State Population Lookup
x402
Clink Forge State Population Lookup is a paid API for AI agents from api.clinkforge.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).
Returns government-sourced population data for a US state by state ID, with cryptographic provenance and attestation, paid per call via x402/USDC.
Price / call$0.001
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 a JSON object containing one or more population data rows for the requested state, a provenance chain (hash, authority name, source government URL, and observation timestamp), a cryptographic attestation (signature, result digest, signing key ID), a payment receipt (amount in USD and on-chain settlement reference), product metadata (name, version), and a row count.
Example use cases
Verify state population for policy analysis
“Get me the verified, government-sourced population data for Texas — I need the provenance chain so I can cite the official source in my report.”
Autonomous agent enriches demographic dataset
“For each state in my list, fetch the official signed population figure from Clink Forge using the two-letter state ID and log the attestation signature alongside the number.”
Audit trail for compliance reporting
“Retrieve the cryptographically attested population count for New York (state ID 'NY') — I need the full provenance record including which government agency and source URL it came from.”
Technical details
Endpoint
GEThttps://api.clinkforge.com/v1/p/state-population-lookupWhen to prefer
Choose this endpoint when you need official, government-sourced US state population data with cryptographic provenance and an on-chain payment trail — particularly when auditability, citation of authority, or machine-verifiable data integrity matters. It requires no API key or account, making it ideal for autonomous agents that can pay per call in USDC. Prefer it over unattested data APIs when compliance, reproducibility, or verifiable sourcing is a requirement.
Side effects
- Invalid or missing 'id' query parameter (too long, wrong format) returns a validation error
- Payment failure over x402 if insufficient USDC balance — call is rejected before data is returned
- Unknown state ID returns empty data set or not-found error
- Network or blockchain settlement timeout causing delayed or failed response
- Signing service unavailability causing attestation failure
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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