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Head to head · Multi-agent orchestration · October 2026 research run

Paperclip vs Unstoppable

Paperclip scores 59 (C) on agent readiness against Unstoppable's 34.9 (F), and leads in every scored category. Both do multi-agent orchestration.

Best agent harnesses and coding agents · All 833 harnesses comparisons

PaperclipPaperclip Labs, Inc. · Agent harness C59/100#651 of 1217 UnstoppableUnstoppable Domains, Inc. · Agent harness F34.9/100#1132 of 1217

Which one, for what

Paperclip C

Best for Someone running several coding or operations agents who wants one place for tasks, budgets, approvals and history across harnesses.

Ahead on

  • Reliability, 66 against 45
  • Schema & documentation, 81 against 30
  • Agent ergonomics, 70 against 5
  • Security & auth, 64 against 36
  • Payments & pricing, 60 against 30
  • Maintenance & community, 78 against 58
  • Transparency & trust, 66 against 58

Also in its favour

  • Open source

Watch for

claude_local defaults dangerouslySkipPermissions to true and codex_local defaults to bypassing approvals and the sandbox, with agents running on the host

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.

Also in its favour

  • No key needed to call it
  • No incidents deducted, where Paperclip loses 10 points for them

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 runPaperclipUnstoppableEdge
Reliability16%206645Paperclip +21
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28130Paperclip +51
Agent ergonomics13%16.2705Paperclip +65
Security & auth14%17.56436Paperclip +28
Payments & pricing10%12.56030Paperclip +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87858Paperclip +20
Transparency & trust7%8.86658Paperclip +8
Negative events≤15-100
TotalC 59/100F 34.9/100

Facts side by side

FactPaperclipUnstoppable
KindAgent harnessAgent harness
VendorPaperclip Labs, Inc.Unstoppable Domains, Inc.
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyNone
PricingFreeFreemium
x402nono
LicenceMITProprietary, under Unstoppable Domains, Inc.'s Terms of Service. No source published
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-052026-10-23
Terms last updated2026-07-23
Privacy policy last updated2026-07-23
Customer content may train modelsyes, with an opt-out
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waiveryes
Popularity99k stars, 60k npm/wknone

Verdicts

Paperclip

Board approvals, budgets with a hard stop and an activity log sit above whichever harnesses do the work, and eleven stable versions shipped in 90 days. The Claude Code and Codex adapters skip permission prompts and the sandbox by default, and twelve security advisories, five of them critical, have been published since April 2026.

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

Paperclip

  1. Set PAPERCLIP_TELEMETRY_DISABLED=1 or DO_NOT_TRACK=1 before the first start. Telemetry is on by default
  2. Set dangerouslySkipPermissions and dangerouslyBypassApprovalsAndSandbox to false on agents that read untrusted input, or run them in a sandbox provider
  3. Install with Node.js 24.11 or newer, and install and sign in to each harness CLI on the host first. Paperclip assumes they are there
  4. Use --bind lan or --bind tailnet at onboarding for anything beyond one machine. The default local_trusted mode treats every request as the board admin
  5. Treat 409 on task checkout as owned by another agent and pick different work. The API docs say not to retry

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, Paperclip or Unstoppable?

Paperclip scores 59 (C) on agent readiness against Unstoppable's 34.9 (F), and leads in every scored category.

Are Paperclip and Unstoppable open source?

Paperclip is open source (MIT). No open-source release is listed for Unstoppable.

Other comparisons with Paperclip or Unstoppable

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