Get an audit

Head to head · Assistants reached by message · October 2026 research run

Caddy vs szn

Caddy scores 16.7 (F) on agent readiness against szn's 7.3 (F), and leads in 4 of 7 scored categories. Both do assistants reached by message.

Best AI personal assistants that act for one person · All 834 assistants comparisons

CaddyCaddy Technologies Inc. · Platform F16.7/100#996 of 1010 sznNomadic Futures · Platform F7.3/100#1010 of 1010

Which one, for what

Caddy F

Best for People who want a free assistant in iMessage or RCS that watches mail, calendars and work tools and asks before acting.

Ahead on

  • Reliability, 10 against 5
  • Payments & pricing, 30 against 20
  • Maintenance & community, 55 against 2
  • Transparency & trust, 52 against 23

Watch for

No API, MCP server or A2A endpoint for an outside agent.

szn F

Best for A person who wants calls, emails and bookings done for them and has an access code.

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

Watch for

Early access by access code only.

Score by category

CategoryWeight this runCaddysznEdge
Reliability16%20105Caddy +5
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.21010even
Agent ergonomics13%16.200even
Security & auth14%17.500even
Payments & pricing10%12.53020Caddy +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8552Caddy +53
Transparency & trust7%8.85223Caddy +29
Negative events≤1500
TotalF 16.7/100F 7.3/100

Facts side by side

FactCaddyszn
KindPlatformPlatform
VendorCaddy Technologies Inc.Nomadic Futures
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyOAuth or key
PricingFreeFree
x402nono
LicenceClosed service under Caddy's Terms of Service (Caddy Technologies Inc., last updated 27 April 2026).Closed service. No terms of service were found on theszn.ai. A privacy policy and an acceptable use policy (both last updated March 2026) apply.
Read-only variant documentedyesyes
llms.txtyesyes
Last release2026-10-13none
Terms last updatedno document linked
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

Verdicts

Caddy

Caddy is a free iMessage and RCS assistant in public beta that watches connected mail, calendars and work apps and asks before sending email or changing data. No outside agent can call it, and no status page, changelog or security contact was found, though its iOS app ships every week or two.

szn

szn is an errand assistant in early access that makes calls, sends emails and books for its owner, free during the preview for people with an access code. No outside agent can call it, no terms of service or legal entity appear in its policies, and its privacy policy says nothing on training.

Before you call either

Caddy

  1. Don't plan to call Caddy from another agent. It answers the owner's text messages, Siri and group chats it's added to.
  2. Expect Caddy to ask the owner before it sends email or creates an invite.

szn

  1. Don't plan to call szn from another agent. It answers only its web app, iMessage, SMS and email for the owner.
  2. Tell the owner they need an access code to start, and that the acceptable use policy makes them responsible for confirming actions.

Questions

Which is better for AI agents, Caddy or szn?

Caddy scores 16.7 (F) on agent readiness against szn's 7.3 (F), and leads in 4 of 7 scored categories.

Other comparisons with Caddy or szn

Disclosure

Caddy competes with LocalGhost, which Anchor Terminal's founder builds. It's graded by the same published checklist as every listing, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed instead of keeping either award by default.

szn competes with LocalGhost, which Anchor Terminal's founder builds. It's graded by the same published checklist as every listing, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed instead of keeping either award by default.

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.

Get an auditSee a sample report