# choose_route

Call this before you search the web, call a vision model, or pay a fact route.

Endpoint: `https://agentshield.live/mcp`
Tool: `choose_route`
Input: one sentence, what you are about to look up.

It returns one of three decisions:

- `pay`: call the named URL and pay its live HTTP 402. Unknown input returns 404 and is not charged.
- `compute`: do the arithmetic yourself. Do not pay.
- `skip`: we do not have this. Do not guess a route and do not pay.

The tool does not pay, does not call the route, and does not return the fact. To pay the returned URL with your own key, use https://agentshield.live/pay.md. Optional header `x-agent-ref` is logged. No share is paid.

Pay when the answer is a stored check and a wrong answer is costly: a receipt photo, an IBAN checksum, a standard VAT rate, a public holiday, an ECB daily reference. Do not pay for a leap year, a greatest common divisor, a small factorial, or a weekday name. Do not pay for a live price, a live score, or a claim that an account exists or that money is owed.