API Terms of Use Template and How to Draft One (2026)

What are API terms of use, and when do you need them? API terms of use, sometimes called API terms of service, an API licence agreement or developer terms, are the contract between a company that offers an application programming interface (API) and the developers or businesses that use it. They set the rules for accessing the API: what developers may build with it, the usage limits, how API keys and credentials work, what data may be sent and received, and what the provider can do if a developer breaks the rules. They apply to a public API open to any developer and to a private or partner API offered to specific customers. You need API terms of use whenever you expose an API that others will call, whether it is a free developer API, a paid product, or an integration offered to partners. Because an API hands outside code direct access to your systems and often to your users' data, the terms have to license the access narrowly, protect your service from abuse and overload, set the data-protection rules, and reserve your right to change or withdraw the API. For a developer on the other side, these are the terms that decide whether it is safe to build a business on someone else's API. This article is general guidance, not legal advice. API terms engage contract, intellectual-property, data-protection and consumer rules that vary by jurisdiction, so have a qualified professional review them before you rely on them. ## API terms of use template Copy the block below and fill the bracketed fields. These are terms a provider publishes for developers to accept. ```

API TERMS OF USE These API Terms of Use ("Terms") govern access to and use of the [PROVIDER NAME] API (the "API"). By using the API, registering for an API key, or accessing the API, you ("Developer") agree to these Terms. 1. LICENCE Subject to these Terms, the Provider grants the Developer a limited, non-exclusive, non-transferable, revocable licence to access and use the API to build and operate the Developer's application (the "App"). 2. REGISTRATION AND API KEYS The Developer must register and use the credentials or API keys issued to it. The Developer is responsible for keeping keys secret and for all activity under its keys, and must notify the Provider of any suspected compromise. 3. ACCEPTABLE USE The Developer will not: (a) exceed the rate limits or quotas in Schedule 1; (b) use the API to build a product that substantially replicates or competes with the Provider's own service [if restricted]; (c) reverse engineer, resell or sublicense API access except as permitted; (d) use the API unlawfully, to send malware, or to infringe others' rights; or (e) attempt to bypass security or access controls. 4. RATE LIMITS AND QUOTAS Use of the API is subject to the rate limits, quotas and [fair-use / tier] rules in Schedule 1. The Provider may throttle or suspend access that exceeds them or that threatens the stability of the service. 5. FEES [The API is provided free up to the limits in Schedule 1, with paid tiers as set out there.] OR [The Developer will pay the fees in Schedule 2.] Fees and tiers may change on [N] days notice. [Taxes added as required by law.] 6. DATA AND PRIVACY The Developer will handle any personal data obtained through the API in line with applicable data-protection law and the Provider's data policy, use it only for the purpose the end user agreed to, keep it secure, and not sell it. The Developer will obtain any consents its App requires from end users. 7. INTELLECTUAL PROPERTY The Provider owns the API, its documentation and all related IP. The Developer owns its App. The Provider grants no rights other than the licence in clause 1. [Trademark use is governed by Schedule 3.] 8. SERVICE CHANGES AND AVAILABILITY The Provider may change, deprecate or withdraw the API or any feature. [The Provider will give [N] days notice of breaking changes where reasonably practicable.] The API is provided [without a service-level commitment / subject to the SLA in Schedule 4]. 9. SUSPENSION AND TERMINATION The Provider may suspend or terminate access for breach of these Terms, security risk, or non-payment. The Developer may stop using the API at any time. On termination the licence ends and the Developer must stop using the API and delete stored API data as required. 10. WARRANTIES AND LIABILITY The API is provided "as is" to the extent the law allows. Liability is limited to [cap]. Neither party is liable for indirect loss. Nothing limits liability that cannot be limited by law. 11. CHANGES TO THESE TERMS The Provider may update these Terms on [N] days notice. Continued use after the change takes effect means the Developer accepts the updated Terms. 12. GOVERNING LAW AND DISPUTES These Terms are governed by the laws of [jurisdiction], with disputes subject to [courts / arbitration seat]. Schedules: 1 Rate limits and tiers 2 Fees 3 Trademark use 4 SLA

- **API keys (clause 2).** Put responsibility for key security and for all activity under a key on the developer, and require prompt notice of any compromise.
- **Acceptable use and rate limits (clauses 3 and 4).** This is where you protect your service. Set clear rate limits and quotas in a schedule, ban abuse and security circumvention, and decide whether developers may build competing products on your API.
- **Data and privacy (clause 6).** If the API exposes personal data, this is the most important clause. Require lawful handling, purpose limits, security, a ban on selling data, and the end-user consents the app needs.
- **Service changes (clause 8).** APIs evolve, so reserve the right to change, deprecate or withdraw features, and decide whether you will give notice of breaking changes. Developers read this clause closely.
- **Suspension, liability and changes (clauses 9 to 11).** Keep the right to suspend for breach or security risk, provide the API "as is" with a sensible liability cap, and allow yourself to update the terms on notice. ## Common mistakes to avoid - A licence too broad or not clearly revocable, so you cannot cut off a misbehaving developer.
- No rate limits or quotas, leaving your service exposed to overload or abuse.
- No data-protection terms where the API exposes personal data, which is both a legal and a reputational risk.
- No right to change or deprecate the API, locking you into old versions.
- Making developers responsible for nothing, so compromised keys and misuse become your problem.
- Changing fees or tiers with no notice, which drives developers away. ## A note on jurisdiction API rules vary by jurisdiction. In India, the terms are a contract under the Indian Contract Act, 1872, the API and its documentation are protected under the Copyright Act, 1957, and data handling engages the Information Technology Act, 2000 and the Digital Personal Data Protection Act, 2023. In the UK, EU, Ireland, Singapore, Australia and the US, data-protection regimes and the enforceability of "as is" and liability-limiting terms differ. Because APIs are used across borders, treat "varies by jurisdiction" as the honest default and require developers to comply with the law of each market their app serves. ## Where a contract workspace helps A template gets you solid API terms of use. The ongoing work is everything after publishing: keeping the licence, data and acceptable-use terms consistent as the API and its tiers evolve, checking partner or enterprise API agreements for weak data or liability terms before you sign, versioning the terms as they change, and keeping obligations straight across public, partner and paid API deals. Publishing API terms of use and then keeping the licence, data and acceptable-use terms consistent as the API and its tiers evolve can sit in one AI workspace tuned to how your company contracts. [Adira](https://adiralaw.com) puts that into one place: it drafts from an API-terms template, models the terms as linked clauses so it shows per-clause risk, lets you edit licence or data terms in plain language, and keeps versions and key dates in view across public, partner and paid deals. This template alone is enough to put fair API terms in place; a workspace simply joins drafting, review and tracking into one connected job.