Ledger Investing website screenshot

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 API contracts indexed 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 33 more developer resources.

57.2/100 strong ▬ flat Agent 21/100 agent aware Front door AI 3/6 light open core · MIT Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →
1 published contract 3 Agent Skills
CompanyInsurance TechInsuranceReinsuranceInsurance-Linked SecuritiesActuarialAnalyticsCapital MarketsData ScienceFinancial 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 Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0
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.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Show this score on your site. Kin Score badge preview for Ledger Investing It updates itself when the score changes. Paste this where you link to your API docs:
<a href="https://apis.io/providers/ledger-investing/"><img src="https://apis.io/badge/ledger-investing/card.svg" alt="Ledger Investing on APIs.io — Kin Score by API Evangelist"></a>
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Raise your score.
Agent readiness — checks not met, largest first (exact, from this profile):
  • MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
  • Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
  • A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
  • Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
  • Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
  • Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
8 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/ledger-investing/apis.yml: open an issue on github.com/api-evangelist/ledger-investing to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

MarketPositionDepthRegistered MCP serverDeclares compatibility
Insurance and Insurtech undeclared - - -

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 6

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

Ledger Investing Cashflow Models API

Cashflow models composed from a fitted development model and tail model.

Ledger Investing Development Models API

Bayesian loss development models (ChainLadder, TraditionalChainLadder, ManualATA, MeyersCRC, GMCL).

Ledger Investing Forecast Models API

Forecasting models (AR1, SSM, TraditionalGCC).

Ledger Investing Tail Models API

Tail development models (GeneralizedBondy, Sherman, ClassicalPowerTransformTail).

Ledger Investing Tasks API

Poll the status of asynchronous fit and predict tasks.

Ledger Investing Triangles API

Upload, list, retrieve and delete insurance loss triangles.

Open Collections 6

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Pricing Plans 1

Published pricing tiers and plan structures.

FinOps 1

Cost, billing, and metering signals for API financial operations.

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Ledger Investing Analytics Overlay

5 actions · update · ledger-investing-analytics-openapi.yml

DERIVED

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Ledger Investing Authentication

apiKey · 1 scheme

SECURITY

Ledger Investing Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Ledger Investing Trust Center

SOC 2 Type 1, SOC 2 Type 2

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Ledger Investing Agentic Access

32 operations · 17 acting · 3 human-in-the-loop

32 operations · 17 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Build 5

SDKs, sample code, and the tooling you integrate with

Access & Security 6

Authentication, authorization, and security posture

Operate 4

Status, limits, changes, and where to get help

Commercial 5

Pricing, plans, and the legal terms of use

Company 4

The organization behind the API

Other 2

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
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: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  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'
x-docs-platform: sphinx
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
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
- 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: Plans
  url: plans/ledger-investing-plans-pricing.yml
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/ledger-investing/overview
- 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: X-MCPServerCandidate
  url: mcp/ledger-investing-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- 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

Ledger Investing API — frequently asked questions

Does Ledger Investing have an API?

Yes. APIs.io lists 6 APIs from Ledger Investing, including Ledger Investing Cashflow Models API, Ledger Investing Development Models API and Ledger Investing Forecast Models API, and 3 more.

Is there an OpenAPI specification for the Ledger Investing API?

Yes. APIs.io indexes 6 OpenAPI specifications for Ledger Investing, each linked for download from this page.

How do I authenticate with the Ledger Investing API?

Ledger Investing uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Ledger Investing Authentication.

How much does the Ledger Investing API cost?

APIs.io lists 1 pricing plan for Ledger Investing, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Ledger Investing API ready for AI agents?

Ledger Investing has a Kin Score of 57.2 out of 100 (strong) and an Agent Readiness score of 20.6 (agent-aware), scored by API Evangelist on 2026-10-31.

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