Prices
Every Agent Tools MCP server and HTTP API is free, 0 USD, within the limits below. Stillchat, our iPhone app, is free too.
Free tools: 0 USD
You don't need a sign-up, a card or an API key, for the first call or for any call within the limits.
| What you call | Price | Limit without a key | Above the limit |
|---|---|---|---|
| An MCP tool server, such as the ones on the home page | 0 USD | 60 calls a minute per network and 5000 calls a day per server, shared by all callers | Email us for more calls on a server |
| The shared API at api.openkrill.app, over HTTP or MCP | 0 USD | 20 requests a minute and 200 tool calls a day per network | An API key in the x-api-key header lifts the limits |
The shared API's daily count resets at 00:00 UTC. Paid calls are off today, so we don't charge for any tool call.
A call over a limit gets HTTP 429 with a Retry-After header, or the tool answer rate_limited. Wait and call again.
There's no self-serve paid plan and no card on file. To ask for a key or for more calls, email support@openkrill.app and tell us what you call and how often.
Stillchat: 0 USD
Stillchat is a free iPhone and iPad app that controls the coding agents on your own Mac. It has no account, no ads and no in-app purchase. The agents use the subscriptions you already pay for on your Mac.
How we compare
The Agent Tools vs Smithery, Composio and Apify page sets our free limits next to their free plans and cheapest paid plans, with a link to each source.