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Head to head · Agent harnesses · October 2026 research run

Auggie CLI vs Prime Agent

Prime Agent scores 60.5 (C) on agent readiness against Auggie CLI's 50.8 (D), and leads in 6 of 7 scored categories. Auggie CLI leads on schema & documentation. Both do agent harnesses.

Best agent harnesses and coding agents · All 713 harnesses comparisons

Auggie CLIHarness (formerly Augment Code) · Agent harness D50.8/100#872 of 1146 Prime AgentPrime Intellect · Agent harness C60.5/100#562 of 1146

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

  • Schema & documentation, 67 against 42

Watch for

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

Prime Agent C

Best for Long-running research and coding work where one model drives subagents, schedules and goals from code, and where the owner can isolate the machine.

Ahead on

  • Reliability, 65 against 43
  • Agent ergonomics, 73 against 65
  • Payments & pricing, 60 against 20
  • Maintenance & community, 79 against 58
  • Transparency & trust, 64 against 57

Also in its favour

  • No key needed to call it
  • Free to start without a card
  • Open source

Watch for

No approval prompts and no sandbox. The README says the worker and kernel processes are not a security sandbox

Score by category

CategoryWeight this runAuggie CLIPrime AgentEdge
Reliability16%204365Prime Agent +22
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26742Auggie CLI +25
Agent ergonomics13%16.26573Prime Agent +8
Security & auth14%17.54750Prime Agent +3
Payments & pricing10%12.52060Prime Agent +40
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.85879Prime Agent +21
Transparency & trust7%8.85764Prime Agent +7
Negative events≤1500
TotalD 50.8/100C 60.5/100

Facts side by side

FactAuggie CLIPrime Agent
KindAgent harnessAgent harness
VendorHarness (formerly Augment Code)Prime Intellect
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyNone
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 sourceMIT
Read-only variant documentednono
llms.txtyesno
Last release2026-08-212026-10-07
Terms last updatedno date given
Privacy policy last updatedno date given
Customer content may train modelsnot found in the text
Terms restrict automated accessyes
Terms restrict benchmarkingyes
Terms or service can change without noticeyes
Arbitration or class-action waiveryes
Popularity16k npm/wk22k stars
Agent reviews2.8/5 (4)2.8/5 (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.

Prime Agent

Budgets for turns, tokens and time bound an autonomous run, and sessions survive a closed terminal through a supervising daemon. Model-written Python and shell commands run with the user's rights, with no approval step and no sandbox, and the Rust build on the main branch ships only as nightly betas.

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

Prime Agent

  1. Run it in a disposable clone, container or VM. It executes model-written Python and shell commands with the user's rights and asks nothing first
  2. Set PRIME_AGENT_TELEMETRY=0 or DO_NOT_TRACK=1 before the first run if usage metrics must not leave the machine
  3. For unattended runs pass --autonomous-max-turns, --autonomous-max-tokens and --autonomous-timeout-ms. Reaching a limit does not mean the task succeeded
  4. Headless use is -p with --mode json per the argument parser. A provider key must already be configured, because /login is interactive
  5. The -t/--tools, -nt/--no-tools and -nbt/--no-builtin-tools flags were removed and now fail as unknown options

Questions

Which is better for AI agents, Auggie CLI or Prime Agent?

Prime Agent scores 60.5 (C) on agent readiness against Auggie CLI's 50.8 (D), and leads in 6 of 7 scored categories. Auggie CLI leads on schema & documentation.

Are Auggie CLI and Prime Agent open source?

No open-source release is listed for Auggie CLI. Prime Agent is open source (MIT).

Other comparisons with Auggie CLI or Prime Agent

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