# Ledger Investing

> Ledger Investing is a New York-based specialist broking and advisory firm for casualty insurance-linked securities (ILS), connecting insurers, reinsurers and fronting carriers to institutional capital. Its wholly owned SaaS subsidiary Korra Tech, LLC operates the Korra data and analytics platform for the reinsurance and ILS market, whose Ledger Analytics API provides remote Bayesian actuarial compute over insurance loss triangles.

Generated by API Evangelist from the ledger-investing profile in the API Evangelist network. The provider does not publish an llms.txt (probed https://www.ledgerinvesting.com/llms.txt, https://www.korra.com/llms.txt and https://api.korra.com/llms.txt — all 404).

## APIs

- [Ledger Analytics API](https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html): Remote compute access to Bayesian actuarial models over insurance loss triangles. Base URL https://api.korra.com/analytics/. Currently in beta.

## Getting started

- [Quick start](https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/quickstart.html): First triangle upload, model fit and prediction.
- [Installation](https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/installation.html): `pip install ledger-analytics` (Python >= 3.11).
- [Requesting access and API keys](https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/apikeys.html): Email analytics@ledgerinvesting.com for a beta account; manage keys at https://ldgr.app/api-keys.
- [Pricing](https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/pricing.html): Free during the beta period.

## Reference

- [API reference](https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/api/index.html): Client classes, interfaces and model configurations.
- [User guide](https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/user-guide/index.html): Modeling rationale and per-model documentation.
- [Tutorials](https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/tutorials/index.html): Loss development and forecasting walkthroughs.
- [Ecosystem](https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/ecosystem.html): The open-source Bermuda and BayesBlend libraries.

## Authentication

Single API key sent as an `Authorization: Api-Key <API_KEY>` header. No OAuth, OIDC or mTLS. The Python client reads the key from the `LEDGER_ANALYTICS_API_KEY` environment variable.

## Core concepts

- Triangle: an insurance loss triangle, uploaded as a Bermuda triangle dictionary and addressed by a unique name.
- Development model: Bayesian loss development — ChainLadder, TraditionalChainLadder, ManualATA, MeyersCRC, GMCL.
- Tail model: tail development — GeneralizedBondy, Sherman, ClassicalPowerTransformTail.
- Forecast model: ultimate loss forecasting — AR1, SSM, TraditionalGCC.
- Cashflow model: composed from one fitted development model and one fitted tail model.
- Task: fits and predictions run asynchronously; poll `/tasks/{task_id}` until `task_response.status` is `success`.

## Packages

- [ledger-analytics (PyPI)](https://pypi.org/project/ledger-analytics/): Official Python client for the Analytics API. `pip install ledger-analytics`
- [bermuda-ledger (PyPI)](https://pypi.org/project/bermuda-ledger/): Loss triangle representation and manipulation — the API's data model.
- [bayesblend (PyPI)](https://pypi.org/project/bayesblend/): Bayesian model averaging and hierarchical stacking.

## Source

- [LedgerInvesting on GitHub](https://github.com/LedgerInvesting)
- [ledger-analytics](https://github.com/LedgerInvesting/ledger-analytics)
- [bermuda-ledger](https://github.com/LedgerInvesting/bermuda-ledger)
- [bayesblend](https://github.com/LedgerInvesting/bayesblend)

## API Evangelist artifacts

- [OpenAPI (derived)](openapi/ledger-investing-analytics-openapi.yml): Derived from the first-party open-source Python client; the provider publishes no OpenAPI.
- [Authentication](authentication/ledger-investing-authentication.yml)
- [Conventions](conventions/ledger-investing-conventions.yml)
- [Error catalog](errors/ledger-investing-problem-types.yml)
- [Data model](data-model/ledger-investing-data-model.yml)
- [Lifecycle](lifecycle/ledger-investing-lifecycle.yml)
- [Conformance](conformance/ledger-investing-conformance.yml)
- [Agent skills](skills/_index.yml)
- [MCP candidate](mcp/ledger-investing-mcp.yml)

## Company

- [Ledger Investing](https://www.ledgerinvesting.com/): Casualty ILS broking, structuring, distribution and secondary trading.
- [Korra](https://www.korra.com): The SaaS platform subsidiary operating the analytics products.
- [Korra Trust Center](https://trust.korra.com): SOC 2 Type 1 and SOC 2 Type 2.
- [Newsroom](https://www.ledgerinvesting.com/news)
- [Terms of use](https://www.ledgerinvesting.com/terms-of-use)
- [Privacy policy](https://www.ledgerinvesting.com/privacy)

## Not available

No webhooks, event stream or AsyncAPI. No public status page. No CLI. No embedded UI components. No OAuth scopes. No sandbox or test-data environment. No /.well-known/ documents. No published OpenAPI. No hosted MCP server.