# Check your first colour pair

## 1. Get the prototype token

Ask the prototype owner for the Chroma bearer token. Public documentation never contains that credential. Cloudflare Managed OAuth is a planned follow-up.

## 2. Connect your client

Use https://mock2.jetskibay.com/mcp directly, or https://jetskibay.com/mcp for the aggregate endpoint. Configure your client to send Authorization: Bearer followed by your token.

## 3. Call the tool

The direct operation is check_contrast; the aggregate name is chroma__check_contrast. Arguments are foreground and background, both six-digit hex strings beginning with #.

## 4. Read the result

The response includes ratio, normalTextAA and largeTextAA. It evaluates a solid colour pair, not a full accessibility audit.