successful listing
{"jsonrpc":"2.0","id":1,"result":{"models":[{"id":"alpha","model":"alpha","displayName":"Alpha","description":"","supportedReasoningEfforts":[{"reasoningEffort":"medium","description":"Alpha"}],"defaultReasoningEffort":"medium","supportedServiceTiers":[],"isDefault":true},{"id":"beta","model":"beta","displayName":"Beta","description":"","supportedReasoningEfforts":[{"reasoningEffort":"medium","description":"Beta"}],"defaultReasoningEffort":"medium","supportedServiceTiers":[],"isDefault":false},{"id":"gamma","model":"gamma","displayName":"Gamma","description":"","supportedReasoningEfforts":[{"reasoningEffort":"medium","description":"Gamma"}],"defaultReasoningEffort":"medium","supportedServiceTiers":[],"isDefault":false}],"selectedOnlyModels":[]}}
unsuccessful listing in a fresh bridge
{"jsonrpc":"2.0","id":1,"result":{"models":[{"id":"acp-default","model":"acp-default","displayName":"Agent default","description":"Model selection is managed by the connected ACP agent.","supportedReasoningEfforts":[{"reasoningEffort":"medium","description":"Reasoning effort is managed by the connected ACP agent."}],"defaultReasoningEffort":"medium","isDefault":true}],"selectedOnlyModels":[]}}