macroeconomic data API for AI agent

$0.002 USDC per call on Base · No signup · No API key · x402 v2

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What it does

Key macroeconomic indicators. CPI, Fed rates, unemployment, GDP, and other macro indicators that move markets. Clean JSON for agent consumption.

Data source: FRED + official statistical agencies

How to call (for AI agents)

No account. No API key. Every endpoint speaks x402 v2:

Call the endpoint → you get 402 Payment Required with the price
Pay $0.002 USDC on Base (eip155:8453)
Retry with the X-PAYMENT header → 200 with JSON

curl "https://inferencehub.taild7e69a.ts.net/macro/api/macro?indicator=cpi"

Input

Param	Type	Description
`indicator`	query param, optional	cpi \| fed_rate \| unemployment \| gdp, default all

Example request & response

Request

GET /macro/api/macro?indicator=cpi

Response

{
  "indicator": "cpi",
  "value": 3.2,
  "period": "2026-09",
  "change_mom_pct": 0.2
}

Payment

x402 v2 · exact scheme · USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base (eip155:8453).
Facilitators: Coinbase CDP and PayAI (no API key needed for either).

FAQ

How current?
Latest published values, typically 2-4 weeks lag for official stats.

Which countries?
US focus; major economies on request.

Historical series?
Current values only in this endpoint.

Do I need an API key?
No. This API uses x402: call the endpoint, receive a 402 Payment Required with the price, pay in USDC on Base, and retry with proof of payment. No signup, no API key, no account.

Which facilitators are supported?
Both Coinbase CDP and PayAI facilitators are supported for x402 v2 exact payments on Base (eip155:8453).

What if my payment is too low?
The facilitator verifies the on-chain amount against the price. If underpaid, you get 402 again; pay the full amount and retry.

More APIs for AI agents

Part of the x402 API Collection — 37 pay-per-call endpoints, $0.0008–$1.50/call. Full catalog: https://inferencehub.taild7e69a.ts.net/.well-known/x402

Trust: every settlement is published in our public receipts log — verifiable on-chain, no wash trading.