# Regime Card: market regime and risk-on / risk-off API

> Regime Card tells an agent whether the US market is risk-on or risk-off right now: one score from 0 to 100 and one of five market regimes, built from eight cross-asset signals. For informational purposes only. Not investment advice.

The live reading and the stress gate are recomputed hourly during the US session, 10:00 AM to 4:00 PM ET. One settled reading is published per trading day at 4:30 PM ET. Every response says which one it is.

## How to pay

Over x402. The agent calls a route, gets HTTP 402 with the price, signs a USDC payment on Base and retries. There is no account and no API key. Data is returned only after the payment settles. Prices are per call, in US dollars, paid in USDC on Base. A call that cannot be answered is not charged.

- [x402](https://x402.org): USDC on Base.

## Paid routes

- [GET https://agent.regimecard.com/v1/live](https://agent.regimecard.com/v1/live): Is the US market risk-on or risk-off right now? $0.01 per call.
- [GET https://agent.regimecard.com/v1/stress](https://agent.regimecard.com/v1/stress): Is there market stress right now in credit, volatility or rates? $0.01 per call.
- [POST https://agent.regimecard.com/v1/lookup](https://agent.regimecard.com/v1/lookup): How has this stock or crypto typically done in markets like today's? $0.01 per call. POST with {"symbols":["NVDA"]}.
- [GET https://agent.regimecard.com/v1/crypto](https://agent.regimecard.com/v1/crypto): Is it risk-on or risk-off for BTC and altcoins, and how have coins behaved in markets like today's? $0.01 per call.
- [GET https://agent.regimecard.com/v1/brief](https://agent.regimecard.com/v1/brief): What are US market conditions today, in one call? $0.01 per call.

## Free sample

- [GET https://agent.regimecard.com/v1/sample](https://agent.regimecard.com/v1/sample): What was the US market regime at the last close? Free.

## MCP

- [MCP server](https://agent.regimecard.com/mcp): streamable HTTP, one free tool and one paid tool per paid route.
- sample_reading: What was the US market regime at the last close? Free.
- live_reading: Is the US market risk-on or risk-off right now? $0.01 per call.
- stress_gate: Is there market stress right now in credit, volatility or rates? $0.01 per call.
- lookup_symbols: How has this stock or crypto typically done in markets like today's? $0.01 per call.
- crypto_regime: Is it risk-on or risk-off for BTC and altcoins, and how have coins behaved in markets like today's? $0.01 per call.
- brief: What are US market conditions today, in one call? $0.01 per call.

## Links

- [OpenAPI](https://agent.regimecard.com/openapi.json): every route with its input schema, output schema and an example.
- [Payment discovery](https://agent.regimecard.com/.well-known/x402): every paid route with its price, payment requirements, schemas and example.
- [Regime Card for AI agents](https://regimecard.com/agents): A market regime and market risk check for AI agents. Pay per call in USDC over x402, or connect the MCP server. No account, no API key.
- [Contact](mailto:hello@regimecard.com): hello@regimecard.com