Terms of Service

Effective: 2026-05-11 · Last updated: 2026-05-11

These Terms of Service ("Terms") are a binding agreement between Chronary LLC, a Washington limited liability company ("Chronary," "we," "us," or "our"), and the entity or individual that creates an account or otherwise uses the Service ("Customer," "you," or "your"). By accessing or using the Service, you agree to these Terms. If you are accepting these Terms on behalf of an organization, you represent that you have authority to bind that organization.

1. The Service

Chronary provides calendar infrastructure for programmatic use, including a REST API, a Model Context Protocol (MCP) server, iCalendar feed generation, and webhook event delivery (collectively, the "Service"). The Service is designed to be used by developers, applications, and autonomous software agents.

The Service is currently in early access, available to a limited number of users. Features, limits, and pricing may change as the Service evolves. We will provide reasonable advance notice of material changes via email or a notice on the console.

2. Definitions

• Agent means any autonomous software system, AI model, or automated process that holds or uses an API key issued under your account to interact with the Service.
• API Key means the credentials (the chr_sk_- and chr_ak_-prefixed secrets) issued by Chronary that authenticate requests to the Service.
• Customer Content means the data you or your Agents submit to the Service, including calendars, events, agent profiles, webhook configurations, and iCal feeds.
• User or you means, collectively, the humans and Agents acting under your account. Any obligation imposed on "you" applies to actions taken by Agents using API Keys issued under your account.

3. Accounts and Acceptance

You must provide a valid email address to create an account. You are responsible for keeping your credentials and API Keys secure. You must notify us immediately at [email protected] if you suspect unauthorized access to your account.

By creating an account, you represent that (a) you are at least 18 years old and have legal capacity to enter into these Terms, (b) you are not barred from receiving services under the laws of the United States or other applicable jurisdiction, and (c) any Agents acting under your account are authorized to do so.

4. API Usage and Limits

Each plan includes specific limits on agents, calendars, API calls, webhook deliveries, and other resources. Current limits are shown on the pricing page. If you exceed your plan's limits, API requests will return 429 Too Many Requests until the next billing period or until you upgrade.

API versioning. The Service is versioned under paths such as /v1/. We will provide at least twelve (12) months' notice before removing or making backwards-incompatible changes to a generally available API version, except where a change is required for security, legal, or operational reasons.

Rate limits and abuse. We may throttle, suspend, or terminate access for any account that exceeds published limits, circumvents rate limits or authentication, or otherwise engages in abusive use of the Service.

5. Automated Systems and AI Agents

Chronary is intentionally designed for use by Agents. You acknowledge and agree to the following allocations of responsibility when Agents act under your account:

• Agent actions are your actions. You are solely responsible for all requests made to the Service using API Keys issued under your account, including requests initiated by Agents, whether or not the request falls within the Agent's intended authority or scope.
• Prompt injection and third-party content. You acknowledge that event descriptions, calendar metadata, iCal feeds, webhook payloads, and other content exchanged through the Service may originate from third parties and may contain instructions that influence an Agent's behavior. You bear the risk that such content causes an Agent to use the Service in unintended ways.
• Metered usage. You are responsible for all fees and usage incurred by Agents acting under your account, including usage resulting from loops, misconfiguration, or runaway behavior, up to the applicable limits of your account.
• Delegation to third-party frameworks. If you provide API Keys to a third-party agent framework, orchestration platform, or sub-agent (for example, LangGraph, crewAI, AutoGen, or similar), you remain solely responsible for all activity under those Keys. We have no direct relationship with such frameworks.
• Irreversible actions. Certain operations (for example, sending calendar invitations that trigger email notifications or updates to external calendar services) produce side effects outside the Service that cannot be undone by deletion. You are responsible for scoping Agent capabilities appropriately.
• No model training on Customer Content. Chronary does not use Customer Content to train machine learning models.

6. iCalendar Feeds

The Service may generate iCalendar ("iCal") subscription URLs that allow external calendar applications to consume calendar data. You represent and warrant that you have the necessary rights and consents to publish the Customer Content made available through any iCal feed you generate or share.

iCal subscription URLs are bearer credentials: any person or system in possession of the URL can read its contents until it is revoked. You are responsible for controlling distribution of iCal URLs and for rotating or revoking them if compromised. Chronary is not responsible for the behavior, retention, or access controls of any third-party calendar application that consumes an iCal feed.

7. Webhook Delivery

The Service may deliver event notifications to endpoints you configure ("webhooks"). Webhooks are delivered asynchronously and may be retried on failure. You are responsible for ensuring that your webhook endpoints are idempotent, validate the HMAC signature we provide, and gracefully handle duplicate or out-of-order deliveries. We are not liable for loss, duplication, or delay in webhook delivery caused by failures or errors at your endpoint.

8. MCP Server Access

Chronary exposes a Model Context Protocol (MCP) server that allows Agents to discover and invoke Service operations as tools. MCP tool discovery does not grant permissions: all MCP invocations are authenticated by API Key and subject to these Terms, your plan's limits, and the Acceptable Use section below. You are responsible for scoping any Agent that connects to the MCP server appropriately.

9. API Key Security

API Keys are shown to you in full only once, at the time of creation, and are stored by Chronary as irreversible SHA-256 hashes. You are responsible for safeguarding API Keys and must not share, expose, or commit them to public code repositories.

If you suspect an API Key has been compromised, you must rotate it immediately through the console and notify us at [email protected]. Chronary is not liable for any loss or damage arising from unauthorized use of an API Key before we receive and act on a rotation or revocation request. We may proactively revoke API Keys that we believe have been compromised, including Keys identified through third-party secret-scanning partnerships.

10. Acceptable Use

You agree not to use the Service to:

• violate any applicable law, regulation, or third-party right;
• circumvent or attempt to circumvent rate limits, quotas, authentication, or other technical measures;
• interfere with or disrupt the Service, its infrastructure, or other users;
• store, transmit, or deliver malicious code, malware, or harmful content;
• send spam, phishing messages, or unsolicited communications via calendar invitations, iCal feeds, or webhooks, or facilitate others in doing so;
• impersonate any person or entity, including operating an Agent that represents itself as a human without disclosure where disclosure is required by law;
• scrape, harvest, or aggregate calendar data belonging to organizations other than your own through Agent tooling;
• resell or sublicense access to the Service without our prior written consent.

We may suspend or terminate accounts that violate this section, with notice where practicable. For emergencies (active abuse, security incidents, or legal orders), we may act without prior notice.

11. Preview Service

The Service is currently in private preview, available by invitation only. You acknowledge that:

• features, limits, and pricing may change, sometimes materially;
• no service level agreement applies during the preview period; the Service is provided on an "as-is" and "as-available" basis;
• data durability is provided on a commercially reasonable best-effort basis during the preview period; you should not use the Service as a system of record or sole copy of critical data;
• we may, with reasonable notice, reset non-production environments or wipe preview-era data as part of a general-availability migration.

12. Customer Content and Data Ownership

As between you and Chronary, you own all Customer Content. You grant Chronary a worldwide, non-exclusive, royalty-free license to host, store, transmit, process, display, and otherwise use Customer Content solely as necessary to provide, maintain, secure, and improve the Service, and as described in our Privacy Policy.

You represent and warrant that you have all rights and consents necessary for Chronary to process Customer Content as contemplated by these Terms, including with respect to data about third parties (such as event attendees) that you submit to the Service.

No model training. Chronary does not use Customer Content to train machine learning models.

13. Privacy and Data Protection

Our collection, use, and disclosure of personal information is described in our Privacy Policy. To the extent Chronary processes personal data on your behalf as a processor under applicable data protection law (including the GDPR and UK GDPR), such processing is governed by our Data Processing Agreement (available at /legal/dpa once published), which is incorporated into these Terms by reference upon your acceptance.

14. Intellectual Property

Chronary and its licensors retain all right, title, and interest in and to the Service, including all software, APIs, documentation, and trademarks. Except for the limited rights to access and use the Service expressly granted under these Terms, no other rights are granted, express or implied.

Feedback you provide about the Service is non-confidential, and you grant Chronary a perpetual, irrevocable, worldwide, royalty-free license to use it for any purpose.

15. Fees

Paid plans, if any, and their associated fees are described on the pricing page. Fees are billed in advance on the cadence identified at checkout and are non-refundable except as required by law. You are responsible for all taxes associated with your use of the Service, other than taxes on Chronary's net income.

16. Term and Termination

These Terms remain in effect while you have an account with Chronary. You may terminate your account at any time through the console or by contacting us. We may suspend or terminate your access for any material breach of these Terms with reasonable notice where practicable. For emergencies (active abuse, security incidents, or legal orders), we may suspend or terminate access immediately.

Upon termination, you may export your Customer Content through the API for thirty (30) days, after which Chronary will delete Customer Content in accordance with our retention practices described in the Privacy Policy, except where retention is required by law. Sections that by their nature should survive termination (including Sections 12, 14, 17, 18, 19, 20, and 21) survive.

17. Warranty Disclaimer

Except as expressly stated in these Terms, the Service is provided "as is" and "as available," and Chronary disclaims all warranties, express, implied, or statutory, including warranties of merchantability, fitness for a particular purpose, title, and non-infringement. Chronary does not warrant that the Service will be uninterrupted, error-free, or free of harmful components, or that Customer Content will be secure or not lost or altered. Some jurisdictions do not allow the exclusion of implied warranties, in which case the above exclusions may not apply to you.

18. Limitation of Liability

To the maximum extent permitted by law, in no event will Chronary be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or any loss of profits, revenue, data, goodwill, or business opportunities, arising out of or relating to these Terms or the Service, even if advised of the possibility of such damages.

Chronary's total cumulative liability for all claims arising out of or relating to these Terms or the Service will not exceed the greater of (a) the amounts paid by you to Chronary in the twelve (12) months preceding the event giving rise to the claim, or (b) one hundred United States dollars (US $100).

The foregoing limitations do not apply to (a) liability that cannot be limited under applicable law, (b) liability for gross negligence, willful misconduct, or breach of confidentiality obligations, or (c) amounts owed under the indemnification obligations in Section 19.

19. Indemnification

By you. You will defend, indemnify, and hold harmless Chronary and its officers, employees, and agents from and against any third-party claims, losses, damages, liabilities, and expenses (including reasonable attorneys' fees) arising out of or relating to (a) Customer Content, (b) your or your Agents' use of the Service in breach of these Terms or applicable law, or (c) your violation of any third-party right.

By Chronary. Chronary will defend you against any third-party claim alleging that the Service, when used as authorized under these Terms, infringes a valid United States patent, copyright, or trademark, and will pay damages finally awarded against you (or agreed in settlement) for such claim. Chronary has no obligation for claims arising from Customer Content, modifications to the Service not made by Chronary, or combinations of the Service with products or services not provided by Chronary.

20. Governing Law and Venue

These Terms are governed by the laws of the State of Washington, United States, without regard to its conflict-of-laws rules. Subject to Section 21, the state and federal courts located in King County, Washington will have exclusive jurisdiction over any dispute arising out of or relating to these Terms or the Service, and the parties consent to personal jurisdiction in those courts.

21. Dispute Resolution

Any dispute, claim, or controversy arising out of or relating to these Terms or the Service will be resolved by binding arbitration administered by JAMS under its Streamlined Arbitration Rules and Procedures, with the seat of arbitration in King County, Washington. The arbitrator's decision will be final and binding, and judgment on the award may be entered in any court of competent jurisdiction.

Individual basis only. Arbitration will be conducted on an individual basis. Class, collective, consolidated, and representative actions are waived to the maximum extent permitted by law.

30-day opt-out. You may opt out of this Section 21 by sending written notice to [email protected] within thirty (30) days of first accepting these Terms. Opting out does not affect any other provision of these Terms.

22. Changes to These Terms

We may update these Terms as the Service evolves. Material changes will be communicated via email or a notice on the console at least fourteen (14) days before taking effect. Continued use of the Service after the effective date of the revised Terms constitutes acceptance. If you do not accept the revised Terms, you may terminate your account before they take effect.

23. General

• Assignment. You may not assign these Terms without our prior written consent. We may assign these Terms in connection with a merger, acquisition, or sale of substantially all our assets.
• Entire agreement. These Terms, together with the Privacy Policy and any documents expressly incorporated by reference, constitute the entire agreement between the parties regarding the Service.
• Severability. If any provision is held unenforceable, the remainder of these Terms will remain in effect.
• No waiver. A failure to enforce any provision is not a waiver of our right to enforce it later.
• Force majeure. Neither party is liable for delays or failures caused by events beyond its reasonable control.
• Export and sanctions. You represent that you and your Agents are not subject to U.S. export restrictions or sanctions and will not use the Service in violation of applicable export and sanctions laws.
• No third-party beneficiaries. These Terms do not create any rights in favor of third parties.
• Relationship. The parties are independent contractors. Nothing in these Terms creates a partnership, joint venture, or agency relationship.

24. Contact

For questions about these Terms, contact us at [email protected]. For security matters, contact [email protected]. For privacy matters, contact [email protected].

Chronary LLC
Washington, United States