Use an Anthropic Pro/Max Plan with an Endpoint (Admin Guide)

Not supported. Using an Anthropic Pro/Max subscription ("Plan") for
agents is no longer offered. Use an Anthropic API key instead.

Why a subscription plan does not work

Anthropic limits Claude Pro/Max subscription access to its own **first-party
apps** — Claude Code and the Claude desktop/web/mobile apps. A third-party
application such as Coda cannot present your subscription credential for
inference: the call is rejected at Anthropic's servers, even though the request
format is otherwise identical to the API.

This is a business/licensing boundary, not a configuration mistake. There is
no header or setting that makes a subscription work for a third-party app.

How does VS Code / Copilot do it, then?

• GitHub Copilot does not use your Claude subscription. You sign in to

GitHub, and GitHub brokers the model call to Anthropic under **its own
commercial agreement**. The entitlement belongs to GitHub, a registered
partner — you never hold an Anthropic credential.

• Anthropic's own "Claude Code" extension can use Pro/Max because it is a

first-party client on Anthropic's allowlist.

• Honest third-party tools (Cline, Roo, Continue) all use a **bring-your-own

API key** — exactly what Symphony uses.

What to use instead

Add an Anthropic (Claude API) provider with an API key:

1. Get an API key from <https://console.anthropic.com>.
2. Company Admin → AI Providers → Add provider → Anthropic (Claude API).
3. Paste the key and save.
4. Build an agent on that provider and assign it to your endpoint or workflow as

usual.

API-key providers can be used anywhere — Project Teams, Process steps, and
Coding Agent steps alike — because the Continuo server holds a usable credential.

If you previously created a plan provider

An older Anthropic (Plan) provider, if any exists, is now shown as
Plan (unsupported) and is dormant. Switch its agents to an API-key provider
and delete the plan provider when convenient.