Usage, images, and voice
Conversation usage
Section titled “Conversation usage”When providers return usage events, the composer can show cumulative input/output tokens, cache activity, estimated cost, and current context fraction. Unknown values remain unknown rather than being guessed.
These figures are operational estimates, not invoices. Provider accounting, cache rules, discounts, and subscription terms remain authoritative.
Subscription windows
Section titled “Subscription windows”Nerve currently retrieves subscription usage snapshots only for OAuth Anthropic and OpenAI Codex. Refresh attempts are debounced per provider. This is separate from cumulative conversation usage and does not track general API-key billing.
Image input
Section titled “Image input”Custom model definitions can declare image input and the harness can pass image content. Pasted images become temporary local paths rather than durable attachments.
For text-only models, choose an image-capable model for explain_image under Settings → Tools, then enable the tool. The agent can explicitly request a detailed description of a JPEG, PNG, GIF, or WebP path. The tool is not disclosed to the model while disabled and is automatically absent when the primary model already supports images.
The configured vision provider receives the image bytes. A local OpenAI-compatible vision endpoint can keep processing local; cloud-provider usage and billing remain separate from the primary model. See Images and voice for clipboard behavior.
Voice input
Section titled “Voice input”Voice capture happens in the browser/Electron renderer, then uploads to ChatGPT’s transcription endpoint. It requires OpenAI Codex OAuth with an account ID and uses gpt-4o-transcribe.
Limits are 8 minutes and 25 MB, with three client retry attempts. The transcript returns as editable text; audio is not added to the conversation as an attachment.