Radar brief — 2026-09-15

What the evidence shows

Window: 15 curated signals across 23 tracked assistants (49% GitHub/changelog vs HTML). Prefer the versioned GitHub tags below; several HTML notes mix multiple versions and omitted bodies. One source reported errors, so this is not a complete census. Large bodyOmitted counts mean we only use listed bullets.

GitHub-tagged releases (higher confidence)

HTML changelogs (noisier; 49% mix)

For developers

• Claude Code v2.1.269: run claude plugin eval --help on any plugin you ship; use /output-style in headless/Remote Control; turn on bashEditDiffEnabled if you need Bash edit diffs; raise CLAUDE_CODE_WORKFLOW_MAX_CONCURRENT_AGENTS only for inference-bound fan-out (cap 256); extend CLAUDE_CODE_GATEWAY_MODEL_DISCOVERY_TIMEOUT_MS if /v1/models discovery flakes (default 3s).
• Codex rust-v0.154.0: select GPT-6-Astra in the picker or Bedrock catalog; treat --worktree / /worktree as experimental isolated checkouts; use inline Q&A so the main draft is not lost; on Windows, learn the shared background-server lifecycle. From 0.153.0, set tui.auto_recap = false if auto recaps are noise; use the plugin CLI against remote marketplaces.
• Goose v1.50.0: point at GPT-6 Astra; expect Snowflake to require HTTPS; do not assume arbitrary CLI session names still work (bound to a trusted path).
• Antigravity 1.2.1: add excludeDefaultComponents: true only when you want a custom agent without default prompt sections/built-in tools; prefer --continue after crashes/subdirectories — it should resume the latest non-empty workspace conversation.
• Cline desktop-v0.0.27 / v0.0.26: if sign-out bounced you back in, sign out again on 0.0.27 (classic-extension re-import was the bug). PR row needs gh + GitHub.com origin; it will not push or file the PR. Re-enable previously “missing” skills — they can now be disabled in place instead of hidden.
• OpenCode v1.18.26: Claude 5 sessions should survive stale thinking blocks; Bedrock GPT-5.6 can use none reasoning effort; Azure login now wants the resource name, not a management-API probe.
• Zed v1.19.0-pre: useful for long agent sessions and OpenRouter reasoning effort, but it is a prerelease — do not standardize on it yet.

For teams

• Trust before workspace code: Codex 0.154.0 refuses workspace-controlled helpers until trust and blocks macOS terminal input injection. Goose binds session naming to a trusted path, keeps permission revocations across managers, and enforces subagent platform guards. Review those defaults before rolling out.
• MCP and plugins are becoming operational surfaces: Codex coordinates MCP OAuth refresh without replaying rejected tools, and 0.153.0 can install plugins from remote marketplaces. Goose prefers the latest MCP version. Antigravity keeps open object schemas ({"type":"object"} / additionalProperties: true). Factory 0.217.0 autocompletes MCP allowlist entries — treat that as an access-control change, not just UX.
• Org policy knobs in the HTML feeds (verify in-product): Factory 0.215.0 lets managers remove Web Search and block individual models while “Allow All” still admits new ones. Tabnine 6.5.3 (bundled in the 6.5.4 note) adds org-level repositories and per-team model assignment; 6.5.4 makes web fetch direct when enabled. Kiro V3 can load cloud Steering/agents/Skills/Powers/Hooks into local CLI sessions without writing .kiro — decide whether that is a feature or a shadow-config risk.
• Auth and telemetry: Cline 0.0.27 is the sign-out/credential-hygiene fix (see open proposal). Claude Code can tag OTEL with vcs.* when OTEL_METRICS_INCLUDE_REPOSITORY is set. Goose honors tracing content-capture opt-out.
• Breaking / policy watch: Windsurf’s HTML recap says ACP is always enabled and some legacy Cascade entry points are gone. Codex Full Access skipping Guardian on confirmation-only actions is a control-plane change — confirm that matches your review policy. Plus/Team Codex users get earlier usage warnings in ~five-hour windows (0.153.0).

What to ignore

• Omitted bodies. Do not infer the +97 / +147 / +95 / +50 / +36 unnamed changes.

• Zed v1.19.0-pre. Prerelease; editor features here are not a model-quality signal.

• Stacked HTML pages. Windsurf v3.10.27 also dumps v3.10.23. Kiro 2.21.4 and 2.21.3 repeat the same V3 dashboard story. Tabnine 6.5.4 embeds 6.5.3–6.5.1. Factory notes mix Desktop app and CLI.

• Marketing model names without a picker/changelog line. GPT-6-Astra is evidenced only for Codex CLI and Goose. “Claude Fable 5.1” appears only as a Windsurf Fusion availability caveat. OpenCode’s Claude 5 / Bedrock GPT-5.6 lines are session-compat fixes, not new model launches.

• Low-weight proposals. OpenCode PR #38252 verification videos (P2) and Grok CLI prompt/MCP proposals have no matching release in this evidence JSON — do not treat them as shipped.

• One source reported errors. Do not assume missing assistants were quiet; coverage is incomplete.

Watch next

• Whether Codex worktree stays experimental and whether GPT-6-Astra quality matches picker availability (proposal).
• Whether claude plugin eval becomes a plugin quality gate (JSON/HTML scores).
• Cline sign-out vs classic-extension credential re-import (proposal).
• Windsurf SSH remote-agent hosts from the location selector (proposal).
• Kiro “apply cloud configuration to local sessions” leaking org Steering/Skills/Hooks onto laptops (proposal).
• MCP OAuth refresh, open-object schema validation, and permission-metadata correctness (apply_patch empty move path).
• Seven open improvement proposals remain on the board; Grok CLI items still lack a versioned GitHub release in this brief.

How to use DevAgentRadar

DevAgentRadar is a public, evidence-first feed for AI coding assistants: versioned GitHub releases over blogs, listed facts only, no invented ships. Use For developers as local CLI/IDE actions (upgrade, flags, eval commands). Use For teams as trust, MCP, identity, and org-policy checks. Discount HTML changelogs, prereleases, and omitted bodies. Track the linked proposals when you want a concrete follow-up rather than another marketing recap.

Evidence appendix

• Evidence window: top curated signals (versioned releases preferred)
• Assistants tracked: 23
• Signals in this brief: 15
• Trusted source mix (GitHub/changelog vs HTML): 49%
• Open improvement proposals: 7
• Sources reporting errors: 1

High-signal releases used

• Claude Code v2.1.269: Added claude plugin eval: run a plugin's eval suite against Claude Code and get scored, reproducible results (JSON + HTML report); see `claude plugin eval --h — source

• OpenAI Codex CLI rust-v0.154.0: GPT-6-Astra is now available in the model picker and Amazon Bedrock catalogs. (#42879, #42619) · Experimental worktree support lets you create isolated checkout — source

• Goose v1.50.0: Support GPT-6 Astra models #11869 · Tool calling for goose-agent [#11627](https://github.com/aaif-goose/goose/ — source

• Zed AI v1.19.0-pre: This week's release includes call hierarchy support, multi-select in the Git Panel, automatic language detection for untitled buffers, and project search on typ — source

• Cline desktop-v0.0.27: An expired Cline sign-in now produces one actionable error instead of two dead ends. · A turn that fails before the runtime takes the prompt was reported twice — source

• Cline desktop-v0.0.26: The composer now shows the current branch's GitHub pull request — PR number, merge status, changed-line totals, and CI checks. · Click through to open it in you — source

• Google Antigravity 1.2.1: Added support for excludeDefaultComponents: true in custom agent Markdown frontmatter, allowing custom agents to opt out of default prompt sections and built- — source

• OpenAI Codex CLI rust-v0.153.0: Vim mode now supports undo with u and redo with Ctrl+R, preserving complete drafts including pasted content and attachments. ([#41941](https://github.com/op — source

• OpenCode v1.18.26: Claude 5 sessions now tolerate stale thinking blocks instead of failing after prompt or tool changes. · Bedrock GPT-5.6 models now accept none reasoning effor — source

• Windsurf v3.10.27: v3.10.27 September 15, 2026 Devin Desktop Dragging files from the Explorer onto the agent panel, or sending an editor selection to chat, adds them to the compos — source

• Kiro v2.21.4: 2.21.4 Sep 11, 2026 · 2.21.3 Sep 10, 2026 · 2.21.2 Sep 8, 2026 +1 more Session Dashboard, Configuration Panel, and Cloud Sync Browse and manage local and cloud — source

• Factory Droid v0.217.0 — · Desktop v0.174.0 (September 11, 2026): Browser shortcuts, smoother command animations, cleaner retries, and clearer organization controls · Smoother command animations - Long-running commands now — source

• Factory Droid v0.215.0 — · Desktop v0.172.0 (September 8, 2026): Streaming terminal responses, organization Web Search control, unified connector settings, and steadier sessions · Stream responses as they arrive - A new t — source

• Tabnine v6.5.4: v6.5.4 August 30, 2026 Bug Fixes Tabnine CLI: Provenance & Attribution : Fixed attribution feedback being dropped after tool inputs were edited via VS Code diff — source

Open proposals

• Connect Windsurf remote agents over SSH from the location selector (audience: team, P5)
• Re-sign out of Cline and Cline Pass so classic extension credentials stop re-importing (audience: developer, P5)
• Switch Codex CLI to GPT-6-Astra and isolated --worktree checkouts (audience: everyone, P5)
• Enable Apply your cloud configuration to local sessions in Kiro V3 (audience: developer, P4)
• Replace <output_efficiency> with <response_guidelines> in Grok CLI prompts (audience: developer, P4)
• Drop legacy managed MCP configs and shadowed platform skills in Grok CLI (audience: developer, P4)
• Improve with OpenCode pr-38252-videos: pr-38252-videos PR #38252 verification videos (audience: everyone, P2)