Add GET /api/providers to agent system prompt - #1077
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Include the providers endpoint in the session API prompt so agents know how to discover available models and their valid modelId values when creating workspaces and sessions. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Co-authored-by: z.ai <noreply@z.ai>
Two defects in the Circus Command output panes surfaced as flaky failures in circus-command-output-auto-tail.spec.ts. A scroll-to-bottom frame scheduled while tailing kept running even after the user scrolled away, yanking a paused pane back to the bottom. The frame callback now re-reads isTailing at frame time, so state observed after scheduling wins. Separately, the tail of a run could be lost permanently. The command-run output subscription owns ordering and de-duplication by persisted sequence number, but its catch-up reads are HTTP round-trips that can resolve after the completion event - and the store silently discarded any append for a non-running run. Those sequenced appends now opt in to applying after completion, bypassing the throttled buffer that is finalized at completion time. The subscription also queues a follow-up read for chunks rejected while a read was already in flight; single flight previously swallowed them with no second pass. The inline pane's E2E assertion now polls for the final line instead of reading once at completion, matching the status-modal test: completion and the last output chunks are separate messages, so the tail can legitimately render just after the run is marked complete. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
ferrislucas
marked this pull request as ready for review
August 9, 2026 10:15
Co-authored-by: Codex <noreply@openai.com>
…into circus-chief/947a-what-are-models-are
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Summary
Adds the
GET /api/providersendpoint to the agent's system prompt documentation so agents can discover available models and their validmodelIdvalues when creating workspaces and sessions.Changes
packages/server/src/services/sessionApiPrompts.js— Added a "List Providers & Available Models" section with acurlexample and description of the response shape (kind,models[].modelId,displayName,tier,enabled,lifecycle).docs/agent-system-prompt.md— Added the corresponding row to the API reference table.Motivation
Agents currently have no documented way to discover which model values are accepted by the workspace/session creation endpoints. This PR surfaces the providers endpoint so agents can programmatically look up valid model IDs instead of guessing.