How the services work together

HANK CODES is a set of healthcare services behind one platform. They share three things, which is what makes them compose cleanly:

• One API key authenticates you to every service your plan includes, with no separate credential per service. (A key can also be scoped to a subset; see Authentication.)
• One edge (https://api.hank.ai/v1/) routes to each service by slug.
• One credit model meters every operation the same way.

A worked example

A typical claims workflow chains three services with the same key:

1. codesets: look up and validate the medical codes on a claim (/v1/codesets/).
2. claim-cleaner: validate and scrub the assembled claim (/v1/claimcleaner/).
3. scholar: ask follow-up questions about edits or policy, over REST or MCP (/v1/scholar/).

Because the key, base URL, and credit accounting are shared, moving between services is just changing the path. You need no new credentials, no separate billing.

See each service's page in the sidebar for its operations, pricing, and a link to its own full documentation.