Hermes

Install Prism’s model-provider plugin in Hermes Agent.

If you have no key, ask the workspace owner for an existing PRISM_API_KEY.

hermes plugins install prismhq/hermes-prism-provider
hermes plugins enable prism --no-allow-tool-override
hermes config set PRISM_API_KEY "$PRISM_API_KEY"
hermes config set model.provider prism
hermes config set model.context_length 1000000

Select prism:deepseek-v4.1-flash at the picker.

• plugins enable is only needed when the installer’s “Enable now?” prompt is skipped, which is always the case for agents without a terminal.
• model.context_length 1000000 is required: Hermes otherwise treats Prism’s 1M window as 128k and compacts early.
• hermes gateway restart is only needed if you run the gateway.

Verify with hermes status --all, which redacts secrets. Never use hermes config get for model settings; it prints the raw API key to stdout.

To remove: hermes plugins disable prism then hermes plugins remove hermes-prism-provider.