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Scarf v2.9.0

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@awizemann awizemann released this 16 May 15:49
· 84 commits to main since this release
v2.9.0
66a276f

Scarf v2.9.0

Hermes v0.14.0 (v2026.5.16) — "Foundation Release" — catch-up. Adds support for the new ACP slash commands, two new providers, two new gateway platforms, two new web-search backends, the local OpenAI-compatible proxy, ACP browser-tools setup, the per-turn file-mutation verifier surface, a YOLO mode warning, and a long tail of settings and config additions. Bundles 9 pending fixes and feature commits that landed since v2.8.0.

Hermes v0.14 catch-up

Chat

  • /subgoal slash command — append extra success criteria to an active /goal loop. Surfaced as a trailing line on the goal pill. Forms: <text>, remove N, clear.
  • /yolo slash command — toggle YOLO mode (skip dangerous-command approvals) without leaving chat. Pairs with a new chat-header warning badge when YOLO is on.
  • /sessions slash command — browse and resume prior sessions from inside an active chat.
  • /codex-runtime slash command — toggle the Codex app-server runtime for OpenAI/Codex models.
  • Per-turn file-mutation verifier — v0.14 Hermes appends a verifier footer to assistant turns that wrote files (configurable via file_mutation_verifier). The footer flows through Scarf chat as plain agent output; bespoke card-style rendering is deferred until the upstream format stabilizes.
  • YOLO mode warning banner — chat-header badge when agent.approval_mode = yolo. Mirrors the warning Hermes itself surfaces in its banner.

Providers

  • xAI Grok OAuth (SuperGrok) — sign in with your xAI account, talk to Grok models from Scarf. Subscription-gated; surfaces in the Models picker with a "Subscription" pill.
  • NovitaAI — new API-key inference provider.
  • Alibaba Cloud → Qwen Cloud — display rename to match Hermes's picker. Provider wire ID stays alibaba so existing config keys keep working.

Platforms

  • LINE Messaging API — 21st gateway platform.
  • SimpleX Chat — 22nd gateway platform. Requires a local simplex-chat daemon running in WebSocket mode (setup instructions in the Discovery panel).

Web Tools

  • Brave Search (free tier) + DuckDuckGo (DDGS) — two new web-search backends. Brave honors a BRAVE_SEARCH_API_KEY env var for higher quotas; DDGS works anonymously.

MCP, plugins, and config

  • MCP supports_parallel_tool_calls — new optional flag on MCP server entries; the agent batches concurrent tool calls instead of serializing.
  • OpenRouter min_coding_score — knob for the Pareto Code router (openrouter/pareto-code). Routes to the cheapest model meeting your quality bar (0.0–1.0, default 0.65).
  • Custom provider api_mode — explicit wire-protocol selection (chat_completions / anthropic_messages / codex_responses).
  • Plugin tool_override badge — plugins that replace a built-in tool now show a badge in PluginsView.
  • docker_extra_args — extra flags passed verbatim to docker run for the docker-backed terminal backend.
  • display.timestamps — per-message timestamps toggle.
  • Cron deliver=all — fan-out cron job delivery to every connected channel.
  • Discord channel-history backfill — toggle the v0.14 default-on backfill behavior per profile.

New feature surfaces

  • Hermes Proxy — new sidebar destination under Configure. Runs hermes proxy start with the user's OAuth-authenticated upstream (Nous Portal in v0.14, more adapters coming). Surfaces the endpoint URL (http://127.0.0.1:8645/v1), routed-provider status, and a tail of the startup log. Use it to point Codex / Aider / Cline / VS Code Continue at your Hermes subscription.
  • ACP browser tools setup — Health view gains a "Run setup" button that calls hermes acp --setup-browser to install Chromium and provision Playwright in one shot.

Performance + reliability fixes (post-v2.8.0)

  • Per-project model presets + mid-chat switcher — save named model+provider presets, bind one to a project, or switch mid-chat via a popover from the chat header.
  • Kanban toolset enable — direct YAML write with detector-based verification (the CLI flow had a regression that didn't persist correctly).
  • MetricKit crash + hang diagnostics — Scarf-iOS persists MetricKit reports across launches so post-mortems work after a TestFlight crash.
  • JSON read caps — session-attribution and project-dashboard JSON reads now bound their input to defend against pathological files.
  • Scroll crash + background-lifecycle hardening — eliminates a scroll-view crash and tightens behavior when the app suspends mid-chat.
  • Selectable text across paragraphs in chat transcript (#93).
  • Process pipe draining for large Kanban outputs (#95).
  • Transcript render perf — chat transcript scrolls faster on long conversations, plus a cron-filter and two-stage load-earlier.
  • iOS slash command parity — iOS chat now sees the same slash menu as Mac, plus four TestFlight-reported fixes.

Hermes compatibility

Targets Hermes v0.14.0 (v2026.5.16). Pre-v0.14 hosts continue to work — every v0.14 surface is capability-gated on HermesCapabilities.has* flags so older Hermes installs gracefully hide new affordances rather than throwing.

Note: the new /handoff slash command in Hermes v0.14 is messaging-platform handoff (CLI-only). Mid-chat model switching in Scarf continues to use the existing session/set_model RPC path via the chat-header model badge.

Upgrade notes

  • The Sparkle appcast at https://awizemann.github.io/scarf/appcast.xml will offer this update automatically on next launch.
  • macOS 14.6+ (Sonoma) deployment target unchanged.
  • No breaking changes to ~/.hermes/ state. The Scarf sidecar at ~/.hermes/scarf/ gains a new optional file for per-project Hermes proxy bindings (created lazily on first use).
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