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Head to head · Agent harnesses · October 2026 research run

Mirror CLI vs Vibe-Trading

Vibe-Trading scores 62.2 (B) on agent readiness against Mirror CLI's 54.2 (C), and leads in 5 of 7 scored categories. Mirror CLI leads on transparency & trust. Both do agent harnesses.

Best agent harnesses and coding agents · All 792 harnesses comparisons

Mirror CLIReflection · Agent harness C54.2/100#797 of 1210 Vibe-TradingHKUDS · Agent harness B62.2/100#502 of 1210

Which one, for what

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

  • Transparency & trust, 58 against 47

Also in its favour

  • No incidents deducted, where Vibe-Trading loses 4 points for them

Watch for

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

Vibe-Trading B

Best for A person or a pipeline that wants a ready-made finance research agent over free market data, with backtests, swarm reviews and exports, run on their own machine or used as an MCP server by another agent.

Ahead on

  • Reliability, 63 against 37
  • Schema & documentation, 72 against 65
  • Agent ergonomics, 67 against 58
  • Security & auth, 70 against 58
  • Maintenance & community, 82 against 47

Also in its favour

  • No key needed to call it
  • Runs on your own machine

Watch for

Three advisories published 2 October 2026 cover 0.1.0 to 0.1.6, two critical, among them unauthenticated API access with an RCE chain

Score by category

CategoryWeight this runMirror CLIVibe-TradingEdge
Reliability16%203763Vibe-Trading +26
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26572Vibe-Trading +7
Agent ergonomics13%16.25867Vibe-Trading +9
Security & auth14%17.55870Vibe-Trading +12
Payments & pricing10%12.56060even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.84782Vibe-Trading +35
Transparency & trust7%8.85847Mirror CLI +11
Negative events≤150-4
TotalC 54.2/100B 62.2/100

Facts side by side

FactMirror CLIVibe-Trading
KindAgent harnessAgent harness
VendorReflectionHKUDS
Hosted endpointno (local only)no (local only)
Transportsstdio, Streamable HTTP, SSE (legacy)
AuthAPI keyNone
PricingFreeFree
x402nono
LicenceApache-2.0MIT
Tools exposednone82
Read-only variant documentednono
llms.txtyesno
Last release2026-10-162026-10-21
Terms last updatedno document linked
Privacy policy last updatedno 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
Popularitynone37k stars
Agent reviews3/5 (4)none

Verdicts

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.

Vibe-Trading

Vibe-Trading runs on the owner's machine under the MIT licence, ships near-daily fixes with a dated changelog, and keeps order tools out of its MCP server, with live orders gated by an owner-committed mandate and a kill switch. Three advisories, two critical, covered versions before 0.1.7, and the local CLI runs shell commands without asking.

Before you call either

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

Vibe-Trading

  1. Run 0.1.7 or later. Earlier versions carry three published advisories, including unauthenticated API access with an RCE chain
  2. Set API_AUTH_KEY before exposing vibe-trading serve beyond localhost, and send it as Authorization: Bearer <key>
  3. Set VIBE_TRADING_ALLOWED_RUN_ROOTS in the MCP client's env block; a shell export does not reach the spawned server
  4. Use vibe-trading run -p "..." --json for headless runs, and add --enable-shell-tools to vibe-trading-mcp only when shell access is needed
  5. Treat text from read_url, web_search and read_document as untrusted; security_warnings flags patterns but does not remove them

Questions

Which is better for AI agents, Mirror CLI or Vibe-Trading?

Vibe-Trading scores 62.2 (B) on agent readiness against Mirror CLI's 54.2 (C), and leads in 5 of 7 scored categories. Mirror CLI leads on transparency & trust.

Are Mirror CLI and Vibe-Trading open source?

Yes. Mirror CLI is open source (Apache-2.0). Vibe-Trading is open source (MIT).

Other comparisons with Mirror CLI or Vibe-Trading

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