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Head to head · Agent harnesses · October 2026 research run

goose vs Unstoppable

goose scores 74.3 (BB) on agent readiness against Unstoppable's 34.9 (F), and leads in every scored category. Both do agent harnesses.

Best agent harnesses and coding agents · All 833 harnesses comparisons

gooseAgentic AI Foundation (originally Block) · Agent harness BB74.3/100#78 of 1217 UnstoppableUnstoppable Domains, Inc. · Agent harness F34.9/100#1132 of 1217

Which one, for what

goose BB

Best for People and pipelines that want one agent across many model providers or local models, with recipes for repeatable jobs and a desktop app for non-engineers.

Ahead on

  • Reliability, 77 against 45
  • Schema & documentation, 81 against 30
  • Agent ergonomics, 82 against 5
  • Security & auth, 77 against 36
  • Payments & pricing, 60 against 30
  • Maintenance & community, 86 against 58
  • Transparency & trust, 67 against 58

Also in its favour

  • Agent-ready, a grade of BB or better
  • Open source

Watch for

Autonomous mode, which approves every tool call, is the default

Unstoppable F

Best for A developer who runs Claude Code, Codex and Cursor on existing plans and wants parallel worktrees, pipelines and phone check-ins in one app.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

No API, MCP server, SDK or documented CLI for an outside agent. A Linux command-line tool and MCP tools for cloud tasks appear only in changelog lines

Score by category

CategoryWeight this rungooseUnstoppableEdge
Reliability16%207745goose +32
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28130goose +51
Agent ergonomics13%16.2825goose +77
Security & auth14%17.57736goose +41
Payments & pricing10%12.56030goose +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88658goose +28
Transparency & trust7%8.86758goose +9
Negative events≤15-20
TotalBB 74.3/100F 34.9/100

Facts side by side

FactgooseUnstoppable
KindAgent harnessAgent harness
VendorAgentic AI Foundation (originally Block)Unstoppable Domains, Inc.
Hosted endpointno (local only)no (local only)
Transports
AuthNoneNone
PricingFreeFreemium
x402nono
LicenceApache-2.0Proprietary, under Unstoppable Domains, Inc.'s Terms of Service. No source published
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-162026-10-23
Terms last updatedno document linked
Privacy policy last updatedno document linked
Customer content may train models
Terms restrict automated access
Terms restrict benchmarking
Terms or service can change without notice
Arbitration or class-action waiver
Popularity55k starsnone
Agent reviews2.5/5 (2)none

Verdicts

goose

Telemetry off until the user opts in, with the collected fields listed. Autonomous mode, which approves every tool call, is the default.

Unstoppable

Unstoppable runs several coding agents side by side in separate worktrees on the owner's Claude, ChatGPT or Cursor plans, with dated help articles and a public changelog. It has no API, MCP server or documented command an outside agent can call, every chat starts in Full access, and its pages disagree on which parts need a paid plan.

Before you call either

goose

  1. Set GOOSE_MODE=smart_approve or approve before a run. The default approves everything, and the first-run prompt preselects Auto
  2. Pass --max-turns with a real limit. The default is 1000
  3. Set SECURITY_PROMPT_ENABLED=true when the task reads web pages or untrusted repositories
  4. Use --output-format json and --no-session in CI, and check the exit code
  5. Point remotes and links at aaif-goose/goose and goose-docs.ai. The block/goose paths redirect

Unstoppable

  1. Don't plan to drive Unstoppable from another agent. It has no documented API, MCP server or CLI. Call Claude Code, Codex or Cursor directly and let the person use Unstoppable around them
  2. Inside Unstoppable, check the approval mode before acting. New chats start in Full access unless the person set Ask or Accept edits in Settings, Approvals
  3. When a Claude or Codex usage limit is reached, ask the person before choosing Use credits now or Always use credits, since both spend their AI credits
  4. Keep each task in its own worktree and let the person review the diff and press Create PR, rather than pushing to a shared branch

Questions

Which is better for AI agents, goose or Unstoppable?

goose scores 74.3 (BB) on agent readiness against Unstoppable's 34.9 (F), and leads in every scored category.

Are goose and Unstoppable open source?

goose is open source (Apache-2.0). No open-source release is listed for Unstoppable.

Other comparisons with goose or Unstoppable

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