Effective date: 16 July 2026 · Last updated: 31 October 2026
Operator: Alexandr Maximov, IČO 88788814, Jeseniova 1196, 130 00 Prague, Czech Republic ("usefulapi", "we", "us").
By connecting to or using a usefulapi MCP server or usefulapi.io (the "Service"), you agree to these Terms. If you use the Service on behalf of an organization, you represent that you are authorized to bind it.
usefulapi provides hosted MCP servers that let your AI client access third-party services (e.g. Linear) on your behalf, using credentials you authorize. usefulapi is an independent product and is not endorsed by or affiliated with those third-party providers.
You must have a valid account with, and comply with the terms of, each third-party service you connect. Your use of that service through usefulapi remains subject to that provider's own terms and pricing. You are responsible for activity performed under your authorized credentials, including any
write actions (e.g. creating issues or comments) initiated through the Service.
When you connect Extensiv, you appoint usefulapi as your API service provider for the calls you request. We accept the confidentiality duties applicable to that role under sections 5.3.1 and 10 of the Extensiv Master Subscription Agreement. These duties govern our handling of Extensiv API credentials and information that agreement protects as confidential. We use it only for your authorized connection and restrict access to people and infrastructure providers who need it for that work and are bound to the required confidentiality standard. Your API credentials are not disclosed to your AI client or LLM provider, and we do not transfer your API licence. These commitments prevail over any less protective provision of these Terms for Extensiv confidential information. You remain responsible for your API entitlement and authorization to send your own records to the AI client and provider you choose.
When you connect currencylayer, you appoint usefulapi under these written Terms as your outsourcing provider solely for your own internal business operations, as permitted by section 2(a) of the APILayer Master SaaS Subscription Agreement. We agree to abide by that agreement as applicable to this role, including its restrictions on use and disclosure and the confidentiality duties in section 9. We use your key only for your requested connection and disclose protected confidential information only to providers who need it for that work and are bound in writing to the required confidentiality standard. These commitments prevail over any less protective provision of these Terms for APILayer confidential information.
You must use a paid currencylayer subscription that permits commercial use and comply with your subscription's scope and quota. You remain responsible for our authorized use under your vendor agreement and for authorizing the AI client and provider you choose to receive requested rates and query details. Your API key is not sent to your AI client or LLM provider. No API account, licence, redistribution right or vendor endorsement is transferred or claimed.
When you connect ipapi.is with your own ipapi.is account and API key, you appoint usefulapi under these written Terms as your contractor for the lookups you request, as contemplated by sections 2.2 and 2.3 ("External Access") of the ipapi.is Terms of Service. In that role we access ipapi.is data exclusively on your behalf and for your direct benefit, and we comply with the ipapi.is Terms that apply to our access to and handling of that data. We do not retain, cache, resell, redistribute or reuse ipapi.is data for our own benefit or for anyone else: each response passes through to your AI client and is not stored by usefulapi. When your connection ends, we hold no ipapi.is data to delete.
We keep ipapi.is data and your API key confidential to at least the standard of those terms. We return results only to you, through the AI client you connect. We grant no third party persistent access to ipapi.is data. Our hosting provider (Cloudflare) runs the server and processes your requests and the responses transiently. Its written subscription agreement limits its use of that content to providing the service, and its data processing addendum applies to any personal data. Your API key is never sent to your AI client or LLM provider. These commitments prevail over any less protective provision of these Terms for ipapi.is data.
You remain the ipapi.is Customer: your own plan, quota and the ipapi.is terms apply to your use, including the permitted purposes in section 2.2. The AI client and LLM provider you choose receive the IP addresses you ask about and the results on your instruction, not ours. You are responsible for ensuring that they meet the conditions the ipapi.is terms set for contractors and external access, and for their use of that data. No API account, licence, redistribution right or vendor endorsement is transferred or claimed.
<product>_upgrade tool; the change keeps the billing interval and charges the price difference for the rest of the current period at once.<product>.usefulapi.io) you subscribed on. You subscribe with that server's <product>_upgrade tool, which returns a Stripe Checkout link.<product>_cancel_subscription tool of the server you subscribed to (for example gumroad_cancel_subscription), or by email to [email protected] from the address you paid with. Cancellation takes effect at the end of the paid period: Pro continues until then, and running <product>_upgrade before then undoes the cancellation. Except where required by law, payments are non-refundable and we do not provide partial-period refunds.If you are an EU consumer, you normally have a 14-day right of withdrawal for digital services. Where you request immediate access and the Service begins, you acknowledge that the right of withdrawal is lost once performance has begun with your consent, to the extent permitted by law.
You will not: (a) use the Service unlawfully or to infringe others' rights; (b) attempt to access other users' data or credentials; (c) probe, overload, or circumvent limits, metering, or security; (d) resell the Service without authorization; or (e) use it in violation of a connected provider's terms.
Health data. Do not send or retrieve protected health information (PHI) under HIPAA through any usefulapi server. We do not sign Business Associate Agreements (BAAs). If you process health data about other people, you need your own lawful basis under GDPR Articles 6 and 9. Tool results also reach your AI client provider. Our servers process tool arguments and results in memory to complete each call. We do not log or retain full tool payloads, and no person at usefulapi reads them. A server can filter, reformat or shorten a result, or add a usage notice to it, before it reaches your AI client. For feature requests, we keep and read the text that you send with a <prefix>_request_feature tool. We keep request metadata, encrypted vendor credentials and, for about 10 seconds, a one-way hash of the arguments. Resumable product-copy workflows also retain shop/product identifiers, progress, timestamps and one-way checksums to support recovery and prevent duplicate copies; they do not retain full product records. API polling limits may retain opaque account identifiers, endpoint names and cooldown timestamps, without API credentials, message contents or phone numbers. The Privacy Policy describes what we keep.
Portions of the Service may be offered on a beta / pre-release basis and may change or be discontinued. We do not guarantee uninterrupted or error-free operation.
TO THE EXTENT PERMITTED BY LAW, THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE", WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. We are not responsible for the acts, content, or availability of third-party services. (Mandatory consumer rights under Czech and EU law are unaffected.)
TO THE MAXIMUM EXTENT PERMITTED BY LAW, Alexandr Maximov WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES, OR FOR LOST PROFITS OR DATA. OUR TOTAL LIABILITY FOR ANY CLAIM ARISING FROM THE SERVICE WILL NOT EXCEED THE GREATER OF THE AMOUNTS YOU PAID US IN THE 3 MONTHS BEFORE THE CLAIM OR USD 50. Nothing limits liability that cannot be excluded by law (e.g. for death, personal injury, or intentional/gross fault).
You will indemnify Alexandr Maximov against claims arising from your use of the Service, your content or actions, or your violation of these Terms or a third-party provider's terms.
You may stop using the Service and disconnect at any time. We may suspend or terminate access for violation of these Terms, non-payment, or to comply with law. Sections that by their nature should survive (e.g. 7–9, 12) survive termination.
We may update these Terms; material changes will be posted here with a new effective date. Continued use after changes take effect constitutes acceptance.
These Terms are governed by the laws of the Czech Republic, and disputes are subject to the competent courts of the Czech Republic, excluding conflict-of-laws rules. Mandatory consumer- protection rights of your country of residence are unaffected.
Alexandr Maximov — [email protected] — Jeseniova 1196, 130 00 Prague, Czech Republic.