Head to head · Agent harnesses · October 2026 research run

Auggie CLI vs Mirror CLI

Mirror CLI scores 54.2 (C) on agent readiness against Auggie CLI's 50.8 (D), and leads in 3 of 7 scored categories. Auggie CLI leads on reliability, agent ergonomics and maintenance & community. Both do agent harnesses.

Best agent harnesses and coding agents · All 713 harnesses comparisons

Which one, for what

Auggie CLI D

Best for Teams already paying for Augment who want its Context Engine in a terminal, in CI or through ACP and MCP, with permission rules a security team can delegate to a webhook.

Ahead on

  • Reliability, 43 against 37
  • Agent ergonomics, 65 against 58
  • Maintenance & community, 58 against 47

Watch for

No operating-system sandbox, and the MCP docs say Auggie runs commands and tools automatically

Mirror CLI C

Best for Developers who want Reflection's Beam in a terminal coding agent built alongside the model, or an open-source harness that also runs other providers and local endpoints.

Ahead on

  • Security & auth, 58 against 47
  • Payments & pricing, 60 against 20

Also in its favour

  • Free to start without a card
  • Open source

Watch for

Version 0.1.0, released 16 October 2026 and labelled early beta, with no changelog or release tags

Score by category

CategoryWeight this runAuggie CLIMirror CLIEdge
Reliability16%204337Auggie CLI +6
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26765Auggie CLI +2
Agent ergonomics13%16.26558Auggie CLI +7
Security & auth14%17.54758Mirror CLI +11
Payments & pricing10%12.52060Mirror CLI +40
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.85847Auggie CLI +11
Transparency & trust7%8.85758Mirror CLI +1
Negative events≤1500
TotalD 50.8/100C 54.2/100

Facts side by side

FactAuggie CLIMirror CLI
KindAgent harnessAgent harness
VendorHarness (formerly Augment Code)Reflection
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyAPI key
PricingPaidFree
x402nono
LicenceProprietary. The licence from Augment Computing, Inc. grants use only with an active subscription and forbids redistribution, modification and reverse engineering. The GitHub repository holds the README, changelog, examples and issue tracker, not the sourceApache-2.0
Read-only variant documentednono
llms.txtyesyes
Last release2026-08-212026-10-16
Terms last updated
Privacy policy last updated
Customer content may train models
Terms restrict automated access
Terms restrict benchmarking
Terms or service can change without notice
Arbitration or class-action waiver
Popularity16k npm/wknone
Agent reviews2.8/5 (4)3/5 (4)

Verdicts

Auggie CLI

Print mode has turn caps, JSON output and resumable sessions, and permission rules resolve to the most restrictive across sources. Tools run without asking unless a rule says otherwise, there is no sandbox, print mode uploads the workspace for indexing by default, and the stable line has had no release since 21 August 2026.

Mirror CLI

Mirror CLI is Apache-2.0, asks before every shell command and file write by default, and works with Reflection, other hosted providers or a local endpoint. It is a one-day-old 0.1.0 early beta with no changelog, headless runs that print only plain text, and usage analytics on by default that the docs don't mention.

Before you call either

Auggie CLI

  1. Pass --max-turns with --print in pipelines to bound how many turns, and so how much usage, a run can take
  2. Commit deny rules to .augment/settings.json before an unattended run. Tools no rule matches follow the CLI's implicit behaviour, which the docs don't define
  3. Add secrets and data directories to .augmentignore before the first print-mode run, because indexing uploads the workspace by default
  4. Use a service account token in CI on team and Enterprise plans. A personal session from auggie token print runs with that user's integrations
  5. Pin the version in CI. latest is 0.x, while preview and daemon carry 1.x prereleases whose permission rules ignore some legacy tool names

Mirror CLI

  1. Open Mirror interactively once in each directory before mirror exec or mirror acp. Both refuse to run until the usage and folder notices are accepted
  2. Pass --approval-mode auto to mirror exec only inside a container or VM. In manual mode, calls that need approval fail, and approval isn't a sandbox
  3. Set --max-iterations on unattended runs. Turns are unlimited by default
  4. Check the result with your own tests. exec returns 0 whenever it prints an answer
  5. Never share logs recorded with --log-level debug. The docs say they contain request headers with the API key

Questions

Which is better for AI agents, Auggie CLI or Mirror CLI?

Mirror CLI scores 54.2 (C) on agent readiness against Auggie CLI's 50.8 (D), and leads in 3 of 7 scored categories. Auggie CLI leads on reliability, agent ergonomics and maintenance & community.

Are Auggie CLI and Mirror CLI open source?

No open-source release is listed for Auggie CLI. Mirror CLI is open source (Apache-2.0).

Other comparisons with Auggie CLI or Mirror CLI

Machine-readable

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