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Head to head · Agent harness · October 2026 research run

goose vs Kiro CLI

goose scores 73.9 (BB) on agent readiness against Kiro CLI's 59.9 (C), and leads in 6 of 7 scored categories. Both do agent harness.

gooseAgentic AI Foundation (originally Block) · Agent harness BB73.9/100#68 of 629 Kiro CLIAmazon Web Services · Agent harness C59.9/100#370 of 629

Which one, for what

goose BB

Good 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 57
  • Agent ergonomics, 82 against 67
  • Security & auth, 77 against 66
  • Payments & pricing, 60 against 40
  • Maintenance & community, 86 against 73

Also in its favour

  • Agent-ready, a grade of BB or better
  • No key needed to call it
  • Open source

Watch for

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

Kiro CLI C

Good for Teams on AWS that want one agent configuration across terminal, IDE and web, with central permission policy, prompt logging to their own S3 bucket and IAM Identity Centre sign-in.

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

Watch for

Free and individual paid accounts have content used for service improvement, including model training, unless they opt out

Score by category

CategoryWeight this rungooseKiro CLIEdge
Reliability16%207757goose +20
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28179goose +2
Agent ergonomics13%16.28267goose +15
Security & auth14%17.57766goose +11
Payments & pricing10%12.56040goose +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88673goose +13
Transparency & trust7%8.86367Kiro CLI +4
Negative events≤15-2-4
Total73.9 · BB59.9 · C

Facts side by side

FactgooseKiro CLI
KindAgent harnessAgent harness
VendorAgentic AI Foundation (originally Block)Amazon Web Services
Hosted endpointno (local only)no (local only)
Transports
AuthNoneOAuth or key
PricingFreeFreemium
x402nono
LicenceApache-2.0Proprietary. Licensed as AWS Content under the AWS Customer Agreement and the AWS Intellectual Property Licence (https://kiro.dev/license/). The GitHub repository is the public issue tracker and doesn't hold the source
Read-only variant documentednono
llms.txtyesyes
Last release2026-09-232026-10-05
Terms last updatedno document linked2026-08-14
Privacy policy last updatedno document linked2026-05-18
Customer content may train modelsnot found in the text
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
Popularity55k stars4.4k stars
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.

Kiro CLI

Permission rules follow deny over ask over allow, cloned repositories can't add rules, and a headless session treats every ask as a deny. Content from Free and individual paid accounts is used for service improvement, including model training, unless the user opts out, and API keys for pipelines need a paid plan.

Before you call either

goose

  1. Set GOOSE_MODE=smart_approve or approve before a run. The default approves everything
  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

Kiro CLI

  1. Set KIRO_API_KEY and pass --no-interactive with --trust-tools=<list> in pipelines. Keep --trust-all-tools for disposable environments
  2. Pass --require-mcp-startup when a run depends on MCP tools. Without it a failed server is logged and the run continues
  3. Pass --no-interactive whenever input is piped from a source you don't control, and run 2.10.0 or later on Windows
  4. Run kiro-cli settings telemetry.enabled false and turn off content collection on Free and individual plans. Both are on by default
  5. Export variables in the shell before starting. Since 2.24.0 a project .env file is no longer loaded into sessions, MCP servers or tools

Questions

Which is better for AI agents, goose or Kiro CLI?

goose scores 73.9 (BB) on agent readiness against Kiro CLI's 59.9 (C), and leads in 6 of 7 scored categories.

Are goose and Kiro CLI open source?

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

Other comparisons with goose or Kiro CLI

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