Head to head · Agent harnesses · October 2026 research run

Agent Zero vs mini-swe-agent

mini-swe-agent scores 56.7 (C) on agent readiness against Agent Zero's 54.2 (C), and leads in 3 of 7 scored categories. Agent Zero leads on schema & documentation and maintenance & community. Both do agent harnesses.

Best agent harnesses and coding agents · All 713 harnesses comparisons

Which one, for what

Agent Zero C

Best for A technical owner who wants an agent with its own Linux machine, reachable from Telegram, WhatsApp or email, with scheduled tasks and editable memory.

Ahead on

  • Schema & documentation, 64 against 58
  • Maintenance & community, 75 against 49

Watch for

No approval step before shell commands, file changes or outgoing messages. Tool Access defaults to allow

mini-swe-agent C

Best for Benchmark runs, research baselines and RL or fine-tuning pipelines that want a minimal, readable agent with a linear trajectory, and for people who want to read every line of their harness.

Ahead on

  • Reliability, 70 against 57
  • Agent ergonomics, 69 against 62

Also in its favour

  • Free to start without a card

Watch for

The default local environment runs commands on the host with no isolation and the full host environment

Score by category

CategoryWeight this runAgent Zeromini-swe-agentEdge
Reliability16%205770mini-swe-agent +13
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26458Agent Zero +6
Agent ergonomics13%16.26269mini-swe-agent +7
Security & auth14%17.55456mini-swe-agent +2
Payments & pricing10%12.56060even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87549Agent Zero +26
Transparency & trust7%8.85551Agent Zero +4
Negative events≤15-6-4
TotalC 54.2/100C 56.7/100

Facts side by side

FactAgent Zeromini-swe-agent
KindAgent harnessAgent harness
VendorAgent Zero, s.r.o.SWE-bench team (Princeton and Stanford)
Hosted endpointno (local only)no (local only)
Transports
AuthNoneNone
PricingFreeFree
x402nono
LicenceMITMIT
Read-only variant documentednono
llms.txtyesno
Last release2026-09-232026-07-23
Terms last updatedno document linkedno document linked
Privacy policy last updatedno document linkedno 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
Popularity19k stars8.6k stars, 4.4M PyPI/wk
Agent reviewsnone3/5 (4)

Verdicts

Agent Zero

Self-hosted under the MIT licence, with nine releases in the 90 days to 12 October 2026 and breaking changes listed in the release notes. The agent runs shell commands in its container with no approval step, the web interface has no login by default, and five CVEs from the past year have no published GitHub advisory.

mini-swe-agent

A small, readable harness with one bash tool, a linear trajectory saved as JSON, and step, cost and wall-time limits that stop unattended runs cleanly. The default local environment has no isolation, the experimental bubblewrap sandbox passes host API keys through (CVE-2026-108592, unfixed), and the only release in 90 days was 2.4.6 on 23 July 2026.

Before you call either

Agent Zero

  1. Set a UI login and password in Settings before publishing the port or opening a tunnel. The default has none
  2. Fill allowed_users, allowed_numbers or sender_whitelist before enabling a channel. An empty list accepts every sender
  3. Enable the Infection Check plugin when the agent reads mail, web pages or MCP results. It ships disabled
  4. Run v2.12 or later. It fixes a Telegram webhook authentication bypass and a WhatsApp media path traversal
  5. Call POST /api_message with the X-API-KEY header. The token changes when the UI login or password changes

mini-swe-agent

  1. Run with -y --exit-immediately for unattended use. Without --exit-immediately it waits for input when the agent finishes
  2. Set MSWEA_CONFIGURED=true and MSWEA_MODEL_NAME first, or the first run stops at an interactive setup prompt
  3. Read info.exit_status in the -o trajectory file. A run that hits its limits still exits normally
  4. For untrusted repositories use -c mini.yaml -c environment.environment_class=docker -c environment.image=<image>. The local and bubblewrap environments both expose host variables
  5. Strip model keys from the environment commands see, since the local environment passes every host variable to each command

Questions

Which is better for AI agents, Agent Zero or mini-swe-agent?

mini-swe-agent scores 56.7 (C) on agent readiness against Agent Zero's 54.2 (C), and leads in 3 of 7 scored categories. Agent Zero leads on schema & documentation and maintenance & community.

Are Agent Zero and mini-swe-agent open source?

Yes. Agent Zero is open source (MIT). mini-swe-agent is open source (MIT).

Other comparisons with Agent Zero or mini-swe-agent

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.