Radar brief — 2026-08-15

What the evidence shows

Versioned GitHub-style releases dominate this window (16 signals across tracked assistants). Strongest clusters: agent loop / session control, MCP & plugins, CLI approvals & sandbox posture, and security defaults.

Lower-confidence / noisy in this set: Gemini v0.56.0-preview.1 and nightly v0.56.0-nightly.20260815.* (prerelease/caretaker-heavy); Codex rust-v0.148.0-alpha.19 (tag-only alpha). Treat as watchlist, not adopt signals.

For developers

• Plan mode is becoming enforcement, not vibes. On Cline v4.1.4, expect hard blocks on mutating shell (editors, redirects, git writers, installs) while investigating stays read-only—and you leave plan mode, not the model. Rehearse workflows that assumed model-driven plan→act.
• Try plugin/skill portability before re-prompting the same setup. Codex rust-v0.147.0 installs portable Agent Plugins and can import Cursor-managed skills; Cline surfaces skills next to workflows with name disambiguation. Inventory local skills once, then sync deliberately.
• Use session fork/rewind when experimenting. Cline Desktop v0.0.8 lets you edit an earlier turn, restore the workspace checkpoint atomically, and re-run—prefer that over manual git stash archaeology mid-agent.
• Contain runaway local tools. Claude Code v2.1.233: consider opt-in CLAUDE_CODE_TOOL_MEMORY_LIMIT on Linux if Bash builds have wedged sessions.
• Diff gutters with intent. Zed v1.15.0 git.diff_base—set explicitly if you care about “uncommitted vs HEAD” vs “branch vs default merge base.”
• Read security patches on CLI upgrades. Gemini CLI v0.55.1 tightens sensitive-path blocklisting (case-insensitive) and path resolution; Codex rust-v0.146.1 tightens auto-review defaults for cyber-capable models—don’t casually loosen approvals to “match old behavior.”
• Prefer stable tags over nightlies/alphas for daily drivers (skip Gemini 0.56 previews/nightlies and Codex 0.148 alpha unless you are validating a fix).

For teams

• Spend and identity attribution: Claude Code v2.1.233 opt-in forward_user_identity on Anthropic upstreams—pilot behind your apps gateway if you need per-user cost allocation through a proxy.
• Enterprise auth path: Google Antigravity 1.1.10 Business sign-in (Gemini Enterprise seats, region, admin controls)—align IdP/Cloud project and license assignment before rolling agents to managed users.
• Approval policy: Codex --approve-for-me (0.147.0) plus safer cyber-model auto-review defaults (0.146.1)—document when auto-review is allowed vs human HITL; explain permission UX so reviewers trust the terminal, not screenshots.
• MCP reliability: Windsurf v3.7.25 fixes auth with self-hosted GitLab and older Atlassian MCP—retest those connectors after client bumps; keep a short allowlist of MCP servers in shared runbooks.
• Observability of agent cost/latency: Goose v1.46.0 per-message tokens/cost/TTFT/tok-s—useful for comparing loops in CI or dogfood channels without external scrapers.
• SDK/host stop semantics: Cline sdk v0.0.72—queued turns surviving aborts and run.failed reporting matter for orchestration hosts; upgrade hosts before relying on “interrupt and continue” behavior.
• Open improvement proposals (8) remain mostly team-audience P5 backports (older Codex/Cline/Goose/OpenCode/Zed/Grok)—triage separately from today’s adopt list; don’t confuse proposal age with this brief’s current versions.

What to ignore

• Marketing tone and +N “more changes” bulk without behavioral impact—focus on flags, mode enforcement, auth, and data-loss paths called out above.
• Prerelease noise: Gemini v0.56.0-preview.1 / nightly test-only bumps; Codex rust-v0.148.0-alpha.19 empty “Release alpha” signal.
• Commit-synced monorepo blips (Grok be71313) until they land in a clear versioned release notes channel.
• HTML-only changelog detail (Windsurf) when you need reproducible pins—pair with internal package hashes if you gate on exact bits.
• Internal proposal links for older versions (e.g. Codex 0.144/0.145, Cline 4.0.7, Goose 1.44.0) as if they were today’s headline releases—they are backlog, not current evidence leaders.

Watch next

• Whether Codex plugin catalogs and --approve-for-me spawn default team templates—or get restricted after cyber-model review defaults.
• Cline plan-mode hard blocks spreading to other agents (policy-as-code vs prompt-only).
• Claude Code identity forwarding adoption and any follow-on audit fields beyond spend headers.
• Gemini CLI 0.56 leaving preview with caretaker/triage features that might affect issue-driven agent ops.
• Goose cache-safe turn assembly + unrolled loop: stability under long MCP tool storms.
• Antigravity enterprise controls interacting with sandbox/hooks/background surfaces tagged in-release.
• Stable semver cut for Grok Build presence/worktree changes after the monorepo sync.

How to use DevAgentRadar

• Read What the evidence shows as the only source of truth for versions—click through to the cited GitHub/changelog URLs before upgrading.
• Developers: apply For developers as personal CLI/IDE checklist the same day.
• Teams: turn For teams into policy tickets (approvals, MCP allowlists, identity/spend, enterprise sign-in)—don’t roll prereleases fleet-wide.
• Use What to ignore in standup to kill rabbit holes; use Watch next for a light Friday scan.
• Treat open proposals as optional backlog votes, not release evidence. This brief is judgment from curated signals, not vendor marketing.

Evidence appendix

• Evidence window: top curated signals (versioned releases preferred)
• Assistants tracked: 22
• Signals in this brief: 16
• Trusted source mix (GitHub/changelog vs HTML): 55%
• Open improvement proposals: 8
• Sources reporting errors: 0

High-signal releases used

• Claude Code v2.1.233: Added GitLab merge request URL support to the --worktree flag and the claude agents view (where MRs display as !N) · Added an opt-in `forward_user_identit — source

• OpenAI Codex CLI rust-v0.147.0: Install portable Agent Plugins and search across local, personal, workspace, and remote plugin catalogs. (#36544, #36409, #36919, #36796) · Organize conversatio — source

• Zed AI v1.15.0: This week's release includes a new git.diff_base setting for choosing whether editor gutters, file-status colors, and git: diff show uncommitted changes aga — source

• Google Antigravity 1.1.10: Added Business sign-in for Gemini Enterprise accounts, so you can authenticate with a Google Cloud project under Google Cloud terms, use a license seat allocate — source

• Goose v1.46.0: Unrolled agent loop #9574 · Cache-safe request assembly with append-only turn context and declared cache semant — source

• Cline desktop-v0.0.8: Edit any earlier message in a conversation — the app forks the session at that point, rewinds the workspace to that run's checkpoint, and re-runs from your edit — source

• Gemini CLI v0.55.1: fix/verify release npm ci ignore scripts · fix(ci): prevent workspace binary shadowing in release verification · Feat/tool registry discovery · fix(ci): prevent — source

• Cline v4.1.4: Recognize Chutes as a provider. · Show skills alongside workflows in the slash command menu, and disambiguate commands that share a name instead of letting one — source

• Cline sdk/sdk/v0.0.72 — SDK v0.0.72: Prompts queued during a turn now survive being interrupted: they are preserved across user-initiated aborts, drained after a turn aborts itself, and edits made — source

• Gemini CLI v0.56.0-preview.1: Changelog for v0.55.0-preview.1 · chore(release): bump version to 0.56.0-nightly.20260806.g761f604c1 · Changelog for v0.54.0 · Reclassifying Capacity Exhaustion — source

• OpenAI Codex CLI rust-v0.146.1: Apply safer automatic-review defaults for cyber-capable models and explain permission changes in the terminal interface. (#37057) · #37057 [0.146] Backport safe — source

• Gemini CLI v0.56.0-nightly.20260815.g2a87e7be1: [SSR Agent] Issue Fix (19826): Migrate process.env to vi.stubEnv in a2a-server tests — source

• OpenCode v1.18.17: Made session compaction keep complete recent turns and produce clearer summaries for smaller models. · Added MERGE Gateway reasoning variants so those model opt — source

• xAI Grok CLI (Grok Build) be71313 — Synced from monorepo: Synced from monorepo · Presence protocol end-to-end: live presence updates through the gateway to client presence tiers · Worktree: narrow standalone origin fet — source

Open proposals

• Improve with OpenAI Codex CLI rust-v0.145.0: rust-v0.145.0 0.145.0 (audience: team, P5)

• Improve with Cline v4.0.7: v4.0.7 (audience: team, P5)

• Improve with xAI Grok CLI (Grok Build) 8adf901: Synced from monorepo (audience: team, P5)

• Improve with OpenCode pr-38252-videos: pr-38252-videos PR #38252 verification videos (audience: everyone, P5)

• Improve with OpenAI Codex CLI rust-v0.144.6: rust-v0.144.6 0.144.6 (audience: developer, P5)

• Review breaking changes in Zed AI v1.13.0-pre (audience: team, P5)

• Improve with OpenCode v1.18.5: v1.18.5 (audience: team, P5)

• Improve with Goose v1.44.0: v1.44.0 (audience: team, P5)