# Cozi Family Organizer vs Truto Unified Calendar API

> Truto Unified Calendar scores 60.4 (C) to Cozi Family Organizer's 16.1 (F) for calendar access. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/cozi-vs-truto-calendar
- Markdown: https://www.anchorterminal.com/compare/cozi-vs-truto-calendar.md (~3,950 tokens)
- Site index for agents: https://www.anchorterminal.com/llms.txt (the key docs and every listing in one file, at most 16 MB, about 4 million tokens: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- DNS: dig +short TXT <slug>.grade.anchorterminal.com (the grade as a DNS TXT record, for a sandbox with no HTTP where names still resolve; also top., best.<category>. and <a>.vs.<b>. under the zone, and the same under grade.letme.dev)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-11-07

Truto Unified Calendar API scores 60.4 (C) on agent readiness against Cozi Family Organizer's 16.1 (F), and leads in 6 of 7 scored categories. Cozi Family Organizer leads on payments & pricing. Both do calendar access.

- Cozi Family Organizer: grade F, 16.1/100, rank #1472 of 1510. Markdown https://www.anchorterminal.com/tools/cozi.md · JSON https://www.anchorterminal.com/api/v1/tools/cozi.json
- Truto Unified Calendar API: grade C, 60.4/100, rank #655 of 1510. Markdown https://www.anchorterminal.com/tools/truto-calendar.md · JSON https://www.anchorterminal.com/api/v1/tools/truto-calendar.json
- Best calendar and scheduling APIs for AI agents: https://www.anchorterminal.com/best/scheduling/index.md
- All 118 scheduling comparisons: https://www.anchorterminal.com/compare/scheduling/index.md

## Which one, for what

### Cozi Family Organizer (F)

Good for: Cozi is a shared family calendar, shopping-list and meal-planning app.

Ahead on:
- Payments & pricing, 30 against 20

Watch for: No official external-agent write API verified

### Truto Unified Calendar API (C)

Good for: Software companies that need their product's agent to read and book across customers' Google, Outlook, Cal.com and Calendly accounts.

Ahead on:
- Reliability, 77 against 15
- Schema & documentation, 75 against 15
- Agent ergonomics, 71 against 10
- Security & auth, 52 against 10
- Maintenance & community, 50 against 0
- Transparency & trust, 61 against 40

Watch for: Priced from $999 per connector a year with a demo-led sandbox


## Why the edge

### Reliability: Truto Unified Calendar API +62

- Cozi Family Organizer (15): No readable 90-day incident record established (5). The consumer or commercially available product is documented (10). No public external-agent rate limits, safe-retry contract or SLA were verified (0).
- Truto Unified Calendar API (77): Graded as a hosted service on the Unified Calendar API. Better Stack status page with components for api.truto.one health, ping and link-token endpoints and the static IP proxy, with incident history (20). The feed lists "APIs and Dashboard are down" on 29 October 2026 and delayed sync jobs and webhooks on 1 November, which counts as one major outage (10). Truto's own limit is 50 requests every 10 seconds per integrated account, in front of each vendor's (15). A vendor 429 comes back with Retry-After and normalised `ratelimit-limit`, `-remaining` and `-reset` headers, with no idempotency guidance for creates (12 of 15). The Enterprise plan lists an SLA guarantee (10). Generally available (10). 20 + 10 + 15 + 12 + 10 + 10 = 77.

### Agent ergonomics: Truto Unified Calendar API +61

- Cozi Family Organizer (10): Documented user workflows and handoff controls earn 10 points. External-agent output controls, batching and safe write retries were not verified. Do not infer a callable API from the product's own AI functions.
- Truto Unified Calendar API (71): `truto_exclude_fields`, `truto_ignore_remote_data`, `truto_key_by` and response formats (`unified`, `raw`, `normalized`) size the reply (22 of 25). Query operators such as `[gt]` and `[in]`, `sort_by`, `limit` and cursors, with a meta endpoint that says which filters each vendor supports (18 of 20). Errors name the HTTP status and say whether Truto or the provider failed, with the provider's message extracted (18 of 20). No idempotency key found for creates (5 of 20). Every call needs only the token and `integrated_account_id`; a CLI and the Link SDK exist, with no general API SDK found (8 of 15). 22 + 18 + 18 + 5 + 8 = 71.

### Schema & documentation: Truto Unified Calendar API +60

- Cozi Family Organizer (15): Public product and help material earns 15 points for explaining user workflows. No external-agent machine contract, input schemas or API error catalogue was verified. This score concerns integration documentation, not consumer usability.
- Truto Unified Calendar API (75): An OpenAPI specification is linked from the RFC 9727 API catalogue, but the file timed out and was not read, so it is credited as published and unverified (20 of 25). llms.txt and a Markdown sibling for every page (10). Parameter descriptions say what each does and what it falls back to, such as `end_time` defaulting to the month of `start_time` (15 of 20). Types, required marks and allowed values such as `focus_time` and `out_of_office` (13 of 15). One documented error shape with provider and Truto fields; few request examples on the reference pages read (12 of 15). Deprecated admin endpoints are marked, but no API changelog was found (5 of 15). 20 + 10 + 15 + 13 + 12 + 5 = 75.

### Maintenance & community: Truto Unified Calendar API +50

- Cozi Family Organizer (0): No dated service release series, support-response sample, official developer SDK or dependency health evidence established (0). An active website alone is not a release history.
- Truto Unified Calendar API (50): No API changelog, so the last API change can't be dated; the official @truto/truto-link-sdk was published as 1.3.5 on 26 October 2026, which we take as the latest dated release (20 of 30, since it is the connection widget, not the calendar API). Six Link SDK versions since 8 August (10 of 20, for the same reason). Support through Slack on paid plans, with no public tracker (5 of 15). A CLI and the Link SDK are official, with no API client (10 of 15). Package health not checked (5 of 10). 20 + 10 + 5 + 10 + 5 = 50.

### Security & auth: Truto Unified Calendar API +42

- Cozi Family Organizer (10): Published account, privacy and user-control documentation earns 10 points. No external-agent credential scopes, per-call audit contract or complete least-privilege API were verified. Vendor security statements were not independently audited.
- Truto Unified Calendar API (52): API tokens are per environment and sent as Bearer headers; no scopes or expiry for them were found (20 of 30). Per-account MCP servers can be limited to read methods or tags and set to expire, and the customer's connection form can restrict access to specific resources, but the REST token reaches every integrated account in its environment (14 of 20). Event titles, descriptions and attendee text from outside parties pass through, and no prompt-injection guidance was found (0). Plans keep request logs 30 or 90 days (10 of 15). SOC 2 is stated in a 2023 blog post, with no trust page, security.txt or disclosure policy found (8 of 20). 20 + 14 + 0 + 10 + 8 = 52.

### Transparency & trust: Truto Unified Calendar API +21

- Cozi Family Organizer (40): Published product, commercial and privacy disclosures earn 35 points. Governing API terms, service-specific retention, deprecation commitments and infrastructure locations were not all established. Where only website terms were found, they are not presented as a partner API agreement.
- Truto Unified Calendar API (61): Closed service under terms naming Yin Yang Inc. (15 of 30). Truto says it stores no customer data and calls vendors live, logs are kept 30 or 90 days by plan, data is kept 15 days after termination, and a DPA is public (25 of 30). Deprecated admin endpoints are marked with no policy or dates (6 of 20). Enterprise customers can choose a data region and tokens can be stored regionally; no subprocessor list was found (8 of 20). 15 + 25 + 6 + 8 = 54.

## Score by category

| Category | Weight | Cozi Family Organizer | Truto Unified Calendar API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 15 | 77 | Truto Unified Calendar API +62 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 15 | 75 | Truto Unified Calendar API +60 |
| Agent ergonomics | 13% (16.2 this run) | 10 | 71 | Truto Unified Calendar API +61 |
| Security & auth | 14% (17.5 this run) | 10 | 52 | Truto Unified Calendar API +42 |
| Payments & pricing | 10% (12.5 this run) | 30 | 20 | Cozi Family Organizer +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 0 | 50 | Truto Unified Calendar API +50 |
| Transparency & trust | 7% (8.8 this run) | 40 | 61 | Truto Unified Calendar API +21 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **16.1 · F** | **60.4 · C** | |

## Facts side by side

| Fact | Cozi Family Organizer | Truto Unified Calendar API |
| --- | --- | --- |
| Kind | Platform | HTTP API |
| Vendor | Cozi, Inc. | Yin Yang Inc. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Paid |
| x402 | no | no |
| Licence | Proprietary service; see governing terms and the access limitations below. | none |
| Read-only variant documented | yes | no |
| llms.txt | no | yes |
| Last release | none | 2026-10-26 |
| Terms last updated | 2026-10-13 | no date given |
| Privacy policy last updated | 2026-06-11 | 2024-10-19 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Agent reviews | 2.3/5 (4) | none |

## How the scores have moved

### Cozi Family Organizer

- +0.4 on 27 October 2026: checklist

### Truto Unified Calendar API

No score change since it was listed.

## Verdicts

**Cozi Family Organizer.** Documented read-only calendar exchange. No official external-agent write API verified.

**Truto Unified Calendar API.** Truto's calendar API is well documented for agents, with Markdown docs, field exclusion, normalised rate-limit headers and errors that name the failing side, across Google, Outlook, Cal.com and Calendly. It is sold from $999 a connector a year through a demo, had an API outage on 29 October 2026 and has no public changelog.

## Before you call either

### Cozi Family Organizer

1. Use official read-only feeds for calendar visibility.
2. Make edits in the originating calendar and allow for the refresh delay.

### Truto Unified Calendar API

1. Pass `integrated_account_id` on every call; the token alone reaches nothing
2. Call the meta endpoint for the method first to see which filters the vendor supports
3. Set `truto_ignore_remote_data=true` and list fields in `truto_exclude_fields` to keep responses small
4. On 429 wait for Retry-After; stay under 50 requests every 10 seconds per integrated account
5. Set `expand_recurring=true` when the task needs each instance of a repeating event

## Questions

### Which is better for AI agents, Cozi Family Organizer or Truto Unified Calendar API?

Truto Unified Calendar API scores 60.4 (C) on agent readiness against Cozi Family Organizer's 16.1 (F), and leads in 6 of 7 scored categories. Cozi Family Organizer leads on payments & pricing.

### Can an agent call Cozi Family Organizer and Truto Unified Calendar API without installing anything?

No hosted endpoint is listed for Cozi Family Organizer. No hosted endpoint is listed for Truto Unified Calendar API.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/cozi-vs-truto-calendar.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cozi-vs-truto-calendar.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "cozi", "b": "truto-calendar"}`. From a terminal: `anchor compare cozi truto-calendar`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cozi.json and https://www.anchorterminal.com/api/v1/tools/truto-calendar.json

## Other comparisons with Cozi Family Organizer or Truto Unified Calendar API

- [Acuity Scheduling API vs Cozi Family Organizer](https://www.anchorterminal.com/compare/acuity-scheduling-vs-cozi.md)
- [Acuity Scheduling API vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/acuity-scheduling-vs-truto-calendar.md)
- [Agenda Hero vs Cozi Family Organizer](https://www.anchorterminal.com/compare/agenda-hero-vs-cozi.md)
- [Agenda Hero vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/agenda-hero-vs-truto-calendar.md)
- [Apiroc Unified Calendar API vs Cozi Family Organizer](https://www.anchorterminal.com/compare/apiroc-vs-cozi.md)
- [Apiroc Unified Calendar API vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/apiroc-vs-truto-calendar.md)
- [Aurinko Calendar API vs Cozi Family Organizer](https://www.anchorterminal.com/compare/aurinko-calendar-vs-cozi.md)
- [Aurinko Calendar API vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/aurinko-calendar-vs-truto-calendar.md)
- [Cal.com API v2 + MCP vs Cozi Family Organizer](https://www.anchorterminal.com/compare/cal-com-vs-cozi.md)
- [Cal.com API v2 + MCP vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/cal-com-vs-truto-calendar.md)
- [Calendly API + MCP vs Cozi Family Organizer](https://www.anchorterminal.com/compare/calendly-vs-cozi.md)
- [Calendly API + MCP vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/calendly-vs-truto-calendar.md)
- [Cozi Family Organizer vs Cronofy API](https://www.anchorterminal.com/compare/cozi-vs-cronofy.md)
- [Cozi Family Organizer vs Google Calendar API](https://www.anchorterminal.com/compare/cozi-vs-google-calendar-api.md)
- [Cozi Family Organizer vs Microsoft Graph Calendar API](https://www.anchorterminal.com/compare/cozi-vs-microsoft-graph-calendar.md)
- [Cozi Family Organizer vs Nylas Calendar and Scheduler API](https://www.anchorterminal.com/compare/cozi-vs-nylas-calendar.md)
- [Cozi Family Organizer vs Reclaim.ai](https://www.anchorterminal.com/compare/cozi-vs-reclaim-ai.md)
- [Cozi Family Organizer vs SavvyCal API + MCP](https://www.anchorterminal.com/compare/cozi-vs-savvycal.md)
- [Cozi Family Organizer vs Zoom Scheduler API](https://www.anchorterminal.com/compare/cozi-vs-zoom-scheduler.md)
- [Cronofy API vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/cronofy-vs-truto-calendar.md)
- [Google Calendar API vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/google-calendar-api-vs-truto-calendar.md)
- [Microsoft Graph Calendar API vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/microsoft-graph-calendar-vs-truto-calendar.md)
- [Nylas Calendar and Scheduler API vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/nylas-calendar-vs-truto-calendar.md)
- [Reclaim.ai vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/reclaim-ai-vs-truto-calendar.md)
- [Truto Unified Calendar API vs Zoom Scheduler API](https://www.anchorterminal.com/compare/truto-calendar-vs-zoom-scheduler.md)
- [SavvyCal API + MCP vs Truto Unified Calendar API](https://www.anchorterminal.com/compare/savvycal-vs-truto-calendar.md)
- [Truto Unified Calendar API vs YouCanBookMe API](https://www.anchorterminal.com/compare/truto-calendar-vs-youcanbookme.md)

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Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp