Privacy policy
Chain Ladder is a calculation tool. It runs locally on your machine — every triangle you analyse, every CSV you load, and every result you see lives on your computer and goes nowhere else. This page exists because the App Store, the MCP Connectors directory, and a few other listings require a privacy policy URL. It's also genuinely how the product is built.
What we collect
Nothing. The MCP server makes no network requests of any kind. There is no analytics, no telemetry, no error reporting, and no usage tracking. The source code is open and you are welcome to verify this yourself at github.com/datalattice/mcp-chainladder.
What stays on your machine
- The loss triangles, factors, and projections you compute
- The CSV files you import and any PDF or CSV exports you save
- Your Pro license file at
~/.chainladder/license - Your settings, including any custom LOB names or row labels
Claude (the LLM client) sees the same data Claude already sees in any conversation — your prompts and the JSON responses from each tool call. Anthropic's privacy policy at anthropic.com/legal/privacy governs what happens to that data on their side; that's outside our control. If you're handling client-confidential reserving data, consider the same precautions you would in any LLM conversation about it (e.g., redact identifiers, use a private deployment).
Pro tier purchases
If you buy a Pro license, your name and email are processed by our payment provider (Stripe, Lemon Squeezy, or Gumroad depending on the checkout link you use). That happens entirely on their infrastructure; we receive a receipt event, generate a signed license file, and email it to you. After that, we keep:
- Your email address (to contact you about license renewals or critical security updates only)
- The license key string we issued (so we can reissue if you lose the file)
- The purchase date and provider transaction ID (for refund support and tax reporting)
We do not share any of this with third parties beyond what's required to deliver the product to you. We never sell email addresses or any other personal data. Email support@chainladder.app to request deletion or export of your purchase record under GDPR / CCPA / equivalent — we'll action within 14 days.
Cookies, fonts, scripts
This marketing site loads no cookies, no JavaScript, no remote fonts, and no analytics. The stylesheet is self-contained and uses system fonts only. The MCP server itself loads nothing over the network at runtime.
Changes to this policy
If we ever change anything material here, we'll update the date at the top, post a note in the GitHub release notes, and (if you're a Pro customer) email you. Substantive changes get at least 30 days' notice before they take effect.
Contact
Questions: support@chainladder.app. We read every message and aim to reply within two business days.