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 markets investors. The firm originates casualty risk, structures off-balance-sheet solutions, brokes and distributes the resulting securities, and supports secondary trading, having securitized more than $2.5 billion of casualty premium across 170+ transactions since graduating Y Combinator in 2017. Its wholly owned SaaS subsidiary Korra Tech, LLC operates the Korra open data and analytics platform for the reinsurance and ILS market, whose Ledger Analytics API gives actuaries programmatic remote-compute access to Bayesian loss development, tail and forecasting models over insurance loss triangles, alongside the open-source Bermuda (loss triangle manipulation) and BayesBlend (Bayesian model stacking) Python libraries. Other subsidiaries include Ledger Capital Markets, LLC (SEC-registered broker-dealer, FINRA/SIPC member) and Ledger Risk Markets, LLC (licensed reinsurance intermediary).

Ledger Investing publishes 6 APIs on the APIs.io network, including Cashflow Models API, Development Models API, Forecast Models API, and 3 more. Tagged areas include Company, Insurance Tech, Insurance, Reinsurance, and Insurance-Linked Securities.

Ledger Investing’s developer surface includes documentation, API reference, getting-started guide, pricing, signup flow, support, engineering blog, and 31 more developer resources.

🌐 Visit website 📡 Source on GitHub

53.2/100 developing ▬ flat Agent 21/100 agent aware open core · MIT Full breakdown ↓
scored 2026-08-30 · rubric v0.17.2

AccessSelf serve

1 APIs 1 MCP Servers

Company Insurance Tech Insurance ReinsuranceInsurance-Linked SecuritiesActuarial Analytics Capital Markets Data Science Financial-Services

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Actuarial Management

BC-2180

Cashflow ModelsDevelopment ModelsForecast ModelsTail ModelsTriangles

POST /development-model POST /tail-model POST /forecast-model

Kin Score

Kin Score How this is scored →
scored 2026-08-30 · rubric v0.17.2

Composite quality — 53.2/100 · developing

Contract Quality 10.2 / 19

Developer Ergonomics 9.9 / 15

Access Clarity 9.1 / 15

Operational Transparency 2.8 / 10

Contract Governance 1.6 / 9

Discoverability 5.1 / 8

Regulatory Posture 8.2 / 15

Open Source Surface 2.5 / 10

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Insurance regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

The six quality facets above are damped to 75 points between them, because both conditional facets apply and carry 25 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/ledger-investing: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

WellKnown

MCPServer

LLMsTxt

AgentSkill

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

SourceCode

Packages

SDKs

Access & Security 6

Authentication, authorization, and security posture

Compliance

Security

Authentication

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

TrustCenter

TrustCenter

Operate 4

Status, limits, changes, and where to get help

IssueTracker

Releases

Support

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

License

Pricing

TermsOfService

PrivacyPolicy

Company 4

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Twitter

Twitter

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: ledger-investing
name: Ledger Investing
description: 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 markets investors. The firm originates
  casualty risk, structures off-balance-sheet solutions, brokes and distributes the resulting securities, and supports secondary
  trading, having securitized more than $2.5 billion of casualty premium across 170+ transactions since graduating Y Combinator
  in 2017. Its wholly owned SaaS subsidiary Korra Tech, LLC operates the Korra open data and analytics platform for the reinsurance
  and ILS market, whose Ledger Analytics API gives actuaries programmatic remote-compute access to Bayesian loss development,
  tail and forecasting models over insurance loss triangles, alongside the open-source Bermuda (loss triangle manipulation)
  and BayesBlend (Bayesian model stacking) Python libraries. Other subsidiaries include Ledger Capital Markets, LLC (SEC-registered
  broker-dealer, FINRA/SIPC member) and Ledger Risk Markets, LLC (licensed reinsurance intermediary).
url: https://raw.githubusercontent.com/api-evangelist/ledger-investing/refs/heads/main/apis.yml
deliveryModel:
  model: open-core
  license: MIT
  open_source: true
  commercial: true
  callable_host: true
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://www.ledgerinvesting.com/apple-touch-icon.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Insurance Tech
- Insurance
- Reinsurance
- Insurance-Linked Securities
- Actuarial
- Analytics
- Capital Markets
- Data Science
- Financial-Services
tags_raw:
- Company
- Insurance Tech
- Insurance
- Reinsurance
- Insurance-Linked Securities
- Actuarial
- Analytics
- Capital Markets
- Data Science
- Financial Services
apis:
- aid: ledger-investing:ledger-investing-cashflow-models-api
  name: Ledger Investing Cashflow Models API
  description: Cashflow models composed from a fitted development model and tail model.
  humanURL: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  baseURL: https://api.korra.com/analytics/
  tags:
  - Cashflow Models
  properties:
  - type: OpenAPI
    url: openapi/ledger-investing-cashflow-models-api-openapi.yml
  - type: Documentation
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  - type: APIReference
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/api/index.html
  - type: GettingStarted
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/quickstart.html
  - type: DataModel
    url: data-model/ledger-investing-data-model.yml
- aid: ledger-investing:ledger-investing-development-models-api
  name: Ledger Investing Development Models API
  description: Bayesian loss development models (ChainLadder, TraditionalChainLadder, ManualATA, MeyersCRC, GMCL).
  humanURL: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  baseURL: https://api.korra.com/analytics/
  tags:
  - Development Models
  properties:
  - type: OpenAPI
    url: openapi/ledger-investing-development-models-api-openapi.yml
  - type: Documentation
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  - type: APIReference
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/api/index.html
  - type: GettingStarted
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/quickstart.html
  - type: DataModel
    url: data-model/ledger-investing-data-model.yml
- aid: ledger-investing:ledger-investing-forecast-models-api
  name: Ledger Investing Forecast Models API
  description: Forecasting models (AR1, SSM, TraditionalGCC).
  humanURL: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  baseURL: https://api.korra.com/analytics/
  tags:
  - Forecast Models
  properties:
  - type: OpenAPI
    url: openapi/ledger-investing-forecast-models-api-openapi.yml
  - type: Documentation
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  - type: APIReference
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/api/index.html
  - type: GettingStarted
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/quickstart.html
  - type: DataModel
    url: data-model/ledger-investing-data-model.yml
- aid: ledger-investing:ledger-investing-tail-models-api
  name: Ledger Investing Tail Models API
  description: Tail development models (GeneralizedBondy, Sherman, ClassicalPowerTransformTail).
  humanURL: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  baseURL: https://api.korra.com/analytics/
  tags:
  - Tail Models
  properties:
  - type: OpenAPI
    url: openapi/ledger-investing-tail-models-api-openapi.yml
  - type: Documentation
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  - type: APIReference
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/api/index.html
  - type: GettingStarted
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/quickstart.html
  - type: DataModel
    url: data-model/ledger-investing-data-model.yml
- aid: ledger-investing:ledger-investing-tasks-api
  name: Ledger Investing Tasks API
  description: Poll the status of asynchronous fit and predict tasks.
  humanURL: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  baseURL: https://api.korra.com/analytics/
  tags:
  - Task
  tags_raw:
  - Tasks
  properties:
  - type: OpenAPI
    url: openapi/ledger-investing-tasks-api-openapi.yml
  - type: Documentation
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  - type: APIReference
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/api/index.html
  - type: GettingStarted
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/quickstart.html
  - type: DataModel
    url: data-model/ledger-investing-data-model.yml
- aid: ledger-investing:ledger-investing-triangles-api
  name: Ledger Investing Triangles API
  description: Upload, list, retrieve and delete insurance loss triangles.
  humanURL: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  baseURL: https://api.korra.com/analytics/
  tags:
  - Triangles
  properties:
  - type: OpenAPI
    url: openapi/ledger-investing-triangles-api-openapi.yml
  - type: Documentation
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
  - type: APIReference
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/api/index.html
  - type: GettingStarted
    url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/quickstart.html
  - type: DataModel
    url: data-model/ledger-investing-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/ledger-investing-capability-edges.yml
  name: Ledger Investing Business Capability Map
- type: Overlay
  url: overlays/ledger-investing-analytics-overlay.yaml
- type: IssueTracker
  url: https://github.com/LedgerInvesting/ledger-analytics/issues
- type: Releases
  url: https://github.com/LedgerInvesting/ledger-analytics/releases
- type: License
  name: MIT
  url: https://github.com/LedgerInvesting/ledger-analytics/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/ledger-investing-agentic-access.yml
- type: Website
  url: https://www.ledgerinvesting.com/
- type: DeveloperPortal
  url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
- type: Documentation
  url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/index.html
- type: APIReference
  url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/api/index.html
- type: GettingStarted
  url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/quickstart.html
- type: Pricing
  url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/pricing.html
- type: SignUp
  url: https://ledger-investing-ledger-analytics.readthedocs-hosted.com/en/stable/apikeys.html
- type: Support
  url: https://www.ledgerinvesting.com/contact-us
- type: Blog
  url: https://www.ledgerinvesting.com/news
- type: GitHubOrganization
  url: https://github.com/LedgerInvesting
- type: SourceCode
  url: https://github.com/LedgerInvesting/ledger-analytics
- type: TermsOfService
  url: https://www.ledgerinvesting.com/terms-of-use
- type: PrivacyPolicy
  url: https://www.ledgerinvesting.com/privacy
- type: Compliance
  url: https://trust.korra.com
- type: Security
  url: https://trust.korra.com
- type: LinkedIn
  url: https://www.linkedin.com/company/ledger-investing
- type: Twitter
  url: https://x.com/LedgerInvesting
- type: Packages
  url: packages/ledger-investing-packages.yml
- type: SDKs
  url: packages/ledger-investing-packages.yml
- type: Authentication
  url: authentication/ledger-investing-authentication.yml
- type: Conventions
  url: conventions/ledger-investing-conventions.yml
- type: ErrorCatalog
  url: errors/ledger-investing-problem-types.yml
- type: Lifecycle
  url: lifecycle/ledger-investing-lifecycle.yml
- type: Conformance
  url: conformance/ledger-investing-conformance.yml
- type: WellKnown
  url: well-known/ledger-investing-well-known.yml
- type: DomainSecurity
  url: security/ledger-investing-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/ledger-investing-vulnerability-disclosure.yml
- type: TrustCenter
  url: security/ledger-investing-trust-center.yml
- type: MCPServer
  url: mcp/ledger-investing-mcp.yml
- type: LLMsTxt
  url: llms/ledger-investing-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: ChangeLog
  url: changelog/ledger-investing-changelog.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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