Radar brief — 2026-09-14

What the evidence shows

Fifteen signals across 23 tracked assistants, with a 49% GitHub/changelog vs HTML mix. Prefer the versioned GitHub rows. Several releases are tagged breaking with large omitted bodies — treat listed bullets as the only confirmed facts here. One source reported errors; HTML changelogs (Windsurf, Kiro, Tabnine, Factory) are noisier and sometimes bundle older patches.

GitHub / versioned releases

HTML changelogs (lower confidence)

For developers

• If you ship Claude Code plugins: run claude plugin eval and keep the JSON/HTML report. Use /output-style in headless/Remote Control. Turn on bashEditDiffEnabled when you need Bash edit diffs. Raise CLAUDE_CODE_WORKFLOW_MAX_CONCURRENT_AGENTS only for inference-bound fan-outs (cap 256).
• Codex CLI: treat --worktree / /worktree as experimental isolated checkouts — browse/resume, don’t bet a release process on it yet. Try GPT-6-Astra in the picker/Bedrock catalog. Use inline Q&A instead of aborting a long run. On 0.153, set tui.auto_recap = false if auto recaps are noise; use the plugin CLI for marketplace install/remove.
• Goose 1.48.0: if you pinned Z.ai GLM-5.2, you are on GLM-5.3. Wire on_failure on PreToolUse hooks; rely on stable tool_call_id. Declarative providers (TrustedRouter, OpenCode Zen, Gondola, SayGM, Lynkr, PleumRouter) are how new gateways land — don’t hand-roll a one-off provider unless you must.
• Antigravity: set excludeDefaultComponents: true on custom-agent Markdown when you want a stripped tool/prompt surface but still need post-invocation hooks. Prefer --continue again after crash/subdir; that path was wrong before 1.2.1.
• OpenCode: Claude 5 + tool/prompt edits should no longer die on stale thinking blocks. On Bedrock GPT-5.6, none reasoning effort is valid. Recheck apply_patch permission metadata if you automate on move paths.
• Cline Desktop: after 0.0.27, sign out of Cline and Cline Pass again if the classic extension still re-imports credentials (open proposal, P5). Use 0.0.26’s PR row only with gh authenticated to GitHub.com; Cline will not open the PR for you. Skills can now be disabled without disappearing.
• Kiro V3: /sessions to resume/clean local+cloud; /config before you assume which MCP/Skills/Hooks are in play. Enable “Apply your cloud configuration to local sessions” only if you want cloud Steering/agents/Skills/Powers/Hooks without writing them into local .kiro.
• Zed v1.19.0-pre is a prerelease. Use it for Agent-session memory/streaming checks, not as a team default.
• Tabnine: if tools.enableWebFetchTool is on, you now get direct fetch — verify network policy. Don’t treat the bundled 6.5.3/6.5.2 notes as today’s sole delta.

For teams

• Trust and MCP first. Codex 0.154 delays workspace-controlled helpers until trust, blocks macOS terminal input injection, and surfaces MCP OAuth refresh/login failure instead of silently replaying rejected tools. Remote resume/fork keep saved permissions; forks follow server model defaults unless you override. Windows shared background server + managed updates need an owner.
• Windsurf/Devin runbooks break on purpose. ACP is mandatory. Cascade-era commands and UI entry points are gone. Add saved SSH agent hosts, and train on activation failures (last stderr + output channel). Cloud archive may close PRs — decide whether that is allowed. There is a team P5 proposal to add those SSH hosts and drop Cascade commands.
• Model defaults will move under people. Factory Droid sessions with no model now land on GPT-5.6 Sol. Goose routes GPT-5.6 variants on Bedrock and replaced GLM-5.2. Codex exposes GPT-6-Astra. Pin models in team config if “whatever the picker says” is not an approved spend/quality bar. Factory’s 60% GPT/Grok cut is explicitly time-limited.
• Cost and observability. Goose custom provider cost fields drive tracking — fill them in. Claude Code can tag OTEL with vcs.* via OTEL_METRICS_INCLUDE_REPOSITORY. Codex Plus/Team warn earlier in a ~5-hour usage window (0.153).
• Identity hygiene. Cline 0.0.27: rejected refresh = signed out; sign-out must not bounce via classic-extension secrets. Antigravity Remote Control no longer shows a fake signed-out companion. Tabnine 6.5.3 notes (bundled) claim org-level repo add and per-team model assignment — verify on your tenant; this is not a GitHub release body.
• Do not execute proposals as if they shipped. Open items still include Goose v1.50.0 / GPT-6 Astra (not in this evidence), Cline CLI v3.0.61 pinning, and Grok CLI prompt/MCP cleanups. Those versions are not in the 15 signals.

What to ignore

• Omitted bodies (+97, +98, +147, +95, …). Do not invent break lists from breaking tags alone. Claude Code, Goose, and both Codex releases hide most of the diff.
• Kiro 2.21.3 as a separate story — it repeats the 2.21.4 V3 dashboard/cloud-sync copy at lower score.
• Zed v1.19.0-pre as a stable IDE drop.
• Factory 60% off as a lasting price. Tabnine’s multi-version docs blob (6.5.4 down to 6.5.1) as a single coherent ship.
• Marketing pages and HTML changelogs when they conflict with GitHub tags. Mix is only 49% trusted changelog/GitHub; one source in this window reported errors.
• Open proposals that name unreleased evidence (Goose v1.50.0, Cline CLI v3.0.61, Grok CLI prompt/MCP). They are backlog, not radar facts.

Watch next

• Whether Codex worktrees leave experimental (--worktree / /worktree) and whether GPT-6-Astra stays picker-only or shows up in other CLIs (a Goose upgrade proposal already wants it — not evidenced).
• Adoption of claude plugin eval and whether plugin authors publish the HTML scores.
• Goose declarative provider sprawl vs lock-in, plus GLM-5.3 behavior vs 5.2.
• Windsurf after Cascade removal and always-on ACP — support load, MCP Docker registry, SSH host UX.
• Cline Desktop sign-out vs classic extension re-import (developer P5 proposal).
• Kiro cloud config applied to local V3 sessions without writing .kiro (developer P4).
• Antigravity custom agents that strip default tools (excludeDefaultComponents) and still keep hooks.
• The other open P4s: Grok CLI <response_guidelines> rename and dropping legacy managed MCP / shadowed platform skills — only if those releases enter evidence.

How to use DevAgentRadar

This brief is an evidence cut, not a vendor recap. Use GitHub-tagged versions as the source of truth; treat HTML docs as leads. Developers should copy the commands and flags above into a personal checklist (plugin eval, --worktree, /sessions, sign-out). Teams should pin models, decide MCP/OAuth and SSH policy, and update runbooks where Cascade/ACP/sign-in behavior changed. Ignore omitted +N more changes. Open proposals are optional follow-ups — they do not mean a version shipped. Re-read the next brief from scratch; older marketing claims never outrank a new release tag.

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: 8
• 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

• Goose v1.48.0: TrustedRouter declarative provider #11422 · OpenCode Zen gateway as a declarative provider [#10939](https://gi — 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

• 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 v3.10.23: v3.10.23 September 10, 2026 Devin Desktop Remote agent hosts: connect to agents over SSH from the location selector, with saved hosts, status dots, and a server — 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

• 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

• Kiro 2.21.3 — Sep 10, 2026: September 1, 2026 Session Dashboard, Configuration Panel, and Cloud Sync · 2.21.0 · Browse and manage local and cloud sessions, inspect configured resources, an — source

• Factory Droid v0.209.0 — · Desktop v0.166.0 (September 1, 2026): Session archiving from chat, a new default model, faster startup, and steadier app views · Archive sessions from chat - Archive the current session with /ar — source

Open proposals

• Re-sign out of Cline and Cline Pass so classic extension credentials stop re-importing (audience: developer, P5)
• Add saved SSH agent hosts in Windsurf and drop Cascade commands (audience: team, P5)
• Upgrade Goose to v1.50.0 and enable GPT-6 Astra with goose-agent tool calling (audience: team, 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)
• Pin Cline models after the v3.0.61 switch to Claude Fable 5.1 (audience: everyone, 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)