Terms of service
The agreement between CapitolMath and the organization that holds an account, covering the application, the API and the datasets. Please read it with the privacy policy and the data processing agreement, which form part of it.
Last updated November 5, 2026
1. The agreement
- These terms are an agreement between CapitolMath, a sole proprietorship based in California (“CapitolMath”, “we”), and the organization that holds a CapitolMath account (“you”).
- Whoever creates the account, or accepts these terms for it, confirms they have authority to bind the organization. Using CapitolMath means accepting these terms.
- The data processing agreement (DPA) is incorporated into these terms and applies whenever we process personal data on your behalf. No separate signature is needed; if your organization requires a countersigned copy, email [email protected].
- A signed order form or enterprise agreement, where there is one, takes precedence over these terms where they conflict.
2. Accounts and members
- You decide who belongs to your account and what each member's role and license are. You're responsible for what your members and API keys do.
- Keep sign-in details and API keys confidential, don't share them outside your organization, and revoke any you think are exposed. Tell us promptly if you suspect unauthorized use.
- A Full license is a paid seat for one named person; it can be reassigned, but not shared.
3. Plans and billing
- Paid plans are billed in advance through Stripe for each billing period — monthly, unless an order form says otherwise — in US dollars, plus any applicable taxes. Your plan sets your limits — seats, API calls, jurisdictions and features — as shown in your account.
- If a payment fails, your plan stays in force while Stripe retries. If it still can't be collected, the account drops back to the no-cost plan.
- You can change or cancel your plan at any time; a cancellation takes effect at the end of the period already paid for. Fees already paid aren't refunded except where the law requires.
- We'll give at least 30 days' notice of a price increase, by email to the account's Owners, before it applies to you.
4. Using CapitolMath data
- While your account is in good standing, you may use CapitolMath data and derived metrics within your organization, and in your own products and publications, within your plan's limits.
- You may not redistribute or resell the data in bulk, offer it as a competing data service, or collect it by scraping or automated means outside the API and datasets your plan provides.
- Please attribute CapitolMath when you cite the data or the derived metrics.
- The data comes from legislatures' public records and is provided for informational and research purposes. The ideology, velocity, bipartisanship and popularity figures are computed estimates, not official designations; they follow the published methodology. Ideology scores are not endorsements and aren't meant to characterize anyone's personal beliefs.
- Nothing in CapitolMath is legal, financial, electoral or other professional advice. Verify against official legislative sources before relying on the data for a consequential decision.
5. Acceptable use
You agree not to:
- break the law with CapitolMath, or use it to harass or threaten anyone, including public officials;
- probe, test or breach its security except as our disclosure policy allows;
- get around rate limits, quotas, jurisdiction limits or seat counts, or interfere with the service for others;
- reverse-engineer the service, except where the law allows it regardless of this term.
6. Your data
- What you put into CapitolMath — saved views, widgets, webhook settings, member details and the like — remains yours. You give us the right to use it only to provide, secure and support the service for you.
- Personal data in it is processed under the DPA. We don't sell it. It goes to an AI model only when a member uses an AI feature or receives the Weekly digest, and only what that request or digest needs; neither we nor our AI provider use it to train models. An Owner or Admin can turn off AI writing of the Weekly digest, and your digests are then facts only.
- Where you point a webhook, publish a widget or send an export is your choice and your responsibility.
- Each of us will keep the other's non-public information confidential and use it only for this agreement.
7. Availability and changes
- Our availability target and support response times are in the service level.
- We improve CapitolMath continually. We won't remove a feature you pay for, or make a breaking change to the
v1API, without at least 90 days' notice, unless security or the law requires it sooner. - Coverage and freshness depend on each legislature's own publishing and vary by jurisdiction.
8. No warranty
Except as these terms expressly say, CapitolMath is provided “as is” and “as available”, without warranty of any kind, including warranties of merchantability, fitness for a particular purpose, accuracy, completeness or timeliness, to the extent the law allows.
9. Limits of liability
- Neither of us is liable to the other for indirect, incidental, special, consequential or punitive damages, or for lost profits, revenue or data, even if warned they were possible.
- Each party's total liability under this agreement is limited to the fees you paid CapitolMath in the 12 months before the claim arose.
- These limits don't apply to your payment obligations, a breach of the data-use or acceptable-use terms, or anything the law doesn't allow to be limited.
10. Suspension and closing
- We may suspend access that threatens the security or stability of the service, or that breaks these terms, and will tell you why and restore it when the problem is fixed.
- An Owner can close the account at any time, and can download an export of the account's data first. We may close an account for a serious or repeated breach, with notice where we can give it.
- After closing, the account's data is deleted within 90 days, and its audit log is erased whole at 90 days unless a legal hold requires us to keep it.
- Sections 4.2, 6.4, 8, 9 and 11 survive the end of this agreement.
11. General
- We may update these terms. We'll change the date at the top, and give account Owners at least 30 days' notice by email of a change that materially reduces your rights. Continuing to use CapitolMath after that means accepting it.
- These terms are governed by the laws of California, and the state and federal courts located in California have exclusive jurisdiction.
- Neither of us is responsible for delays caused by events beyond reasonable control.
- You may not assign this agreement without our consent, except to a successor to your business. We may assign it to a successor to ours.
- If a term is unenforceable, the rest still applies. Not enforcing a term isn't a waiver of it.
- Notices to us: [email protected]. Notices to you go to your account's Owners by email.