ZenLedger

ZenLedger is a Seattle-founded crypto tax and digital-asset accounting company whose platform ingests transactions from 400+ exchanges, 100+ DeFi protocols and 10+ NFT marketplaces to calculate cost basis, capital gains and income, and generate US tax forms. Beyond the consumer product it operates two documented B2B REST APIs on api.zenledger.io: the Compliance Suite API (v3), a digital-asset trade-monitoring surface built with COMPLY for financial institutions and enterprise compliance teams that registers companies and users, imports wallets and exchange accounts, returns normalized transactions and holdings, and screens blockchain addresses against sanctions lists; and the Aggregator Suite API (v1), a partner surface that builds an aggregated portfolio from a set of accounts and returns the resulting tax calculation. Both authenticate with OAuth 2.0 client_credentials JWTs and are documented as versioned Postman collections at docs.zenledger.io.

ZenLedger publishes 2 APIs on the APIs.io network: Compliance Suite API and Aggregator Suite API. Tagged areas include Crypto Tax, Digital Assets, Tax Compliance, Blockchain Analytics, and RegTech.

The ZenLedger catalog on APIs.io includes 1 event-driven AsyncAPI specification.

ZenLedger’s developer surface includes documentation, API reference, support, pricing, authentication, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub

56.9/100 strong Agent 37/100 agent ready Full breakdown ↓
scored 2026-09-05 · rubric v0.18.3

2 APIs

Crypto TaxDigital Assets Tax Compliance Blockchain Analytics RegTech Accounting Sanctions ScreeningFinancial ServicesPortfolio AggregationCryptocurrency

Kin Score

Kin Score How this is scored →
scored 2026-09-05 · rubric v0.18.3

Composite quality — 56.9/100 · strong

Contract Quality 16.0 / 25

Developer Ergonomics 11.0 / 20

Access Clarity 15.8 / 20

Operational Transparency 5.1 / 13

Contract Governance 2.2 / 12

Discoverability 6.9 / 10

Agent readiness — 37/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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 Well-Known Document 0 / 5

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 github.com/api-evangelist/zenledger: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

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

Rate Limits 1

Documented rate limits and quota policies.

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

DataModel

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

Postman

Postman

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 6

Authentication, authorization, and security posture

Authentication

Authentication

Compliance

Compliance

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: zenledger
name: ZenLedger
description: 'ZenLedger is a Seattle-founded crypto tax and digital-asset accounting company whose platform ingests transactions
  from 400+ exchanges, 100+ DeFi protocols and 10+ NFT marketplaces to calculate cost basis, capital gains and income, and
  generate US tax forms. Beyond the consumer product it operates two documented B2B REST APIs on api.zenledger.io: the Compliance
  Suite API (v3), a digital-asset trade-monitoring surface built with COMPLY for financial institutions and enterprise compliance
  teams that registers companies and users, imports wallets and exchange accounts, returns normalized transactions and holdings,
  and screens blockchain addresses against sanctions lists; and the Aggregator Suite API (v1), a partner surface that builds
  an aggregated portfolio from a set of accounts and returns the resulting tax calculation. Both authenticate with OAuth 2.0
  client_credentials JWTs and are documented as versioned Postman collections at docs.zenledger.io.'
url: https://raw.githubusercontent.com/api-evangelist/zenledger/refs/heads/main/apis.yml
image: https://zenledger.io/wp-content/uploads/2023/07/ZenLedger-OpenGraph.png
x-type: company
x-source: harvest:secondary-market
position: Producing
specificationVersion: '0.23'
created: '2026-09-05'
modified: '2026-09-05'
tags:
- Crypto Tax
- Digital Assets
- Tax Compliance
- Blockchain Analytics
- RegTech
- Accounting
- Sanctions Screening
- Financial Services
- Portfolio Aggregation
- Cryptocurrency
tags_raw:
- crypto-tax
- digital-assets
- tax-compliance
- blockchain-analytics
- regtech
- accounting
- sanctions-screening
- financial-services
- portfolio-aggregation
- cryptocurrency
apis:
- aid: zenledger:zenledger-compliance-suite-api
  name: ZenLedger Compliance Suite API
  description: Digital-asset trade-monitoring and crypto tax-compliance REST API (v3) for financial institutions and enterprise
    compliance teams. Registers companies and their users, imports exchange accounts and wallets over a signed and AES-256
    encrypted request, returns normalized transactions and per-source holdings, screens blockchain addresses against sanctions
    lists, exposes Polymarket positions, and serves supported currency, source and chain reference data. Authenticated with
    an OAuth 2.0 client_credentials JWT that expires in 30 minutes. Import completion, import-limit and wallet-screening events
    are delivered as webhooks.
  humanURL: https://docs.zenledger.io/compliance/v3/
  baseURL: https://api.zenledger.io
  tags:
  - Tax Compliance
  - Sanctions Screening
  - Digital Assets
  - RegTech
  - Blockchain Analytics
  tags_raw:
  - tax-compliance
  - sanctions-screening
  - digital-assets
  - regtech
  - blockchain-analytics
  properties:
  - type: OpenAPI
    url: openapi/zenledger-compliance-api-openapi.yml
  - type: Postman
    url: postman/zenledger-compliance-v3.postman_collection.json
  - type: Documentation
    url: https://docs.zenledger.io/compliance/v3/
  - type: APIReference
    url: https://docs.zenledger.io/compliance/v3/README.md
  - type: Overlay
    url: overlays/zenledger-compliance-api-overlay.yaml
  - type: Webhooks
    url: asyncapi/zenledger-compliance-webhooks.yml
- aid: zenledger:zenledger-aggregator-suite-api
  name: ZenLedger Aggregator Suite API
  description: Partner/aggregator REST API (v1) that creates an aggregated portfolio from a set of exchange and wallet accounts,
    returns the resulting tax calculation for that portfolio by aggregation code, and serves the supported source and currency
    reference data. Authenticated with the same OAuth 2.0 client_credentials JWT as the Compliance Suite.
  humanURL: https://docs.zenledger.io/aggregators/rest-api/v1/
  baseURL: https://api.zenledger.io
  tags:
  - Portfolio Aggregation
  - Crypto Tax
  - Digital Assets
  tags_raw:
  - portfolio-aggregation
  - crypto-tax
  - digital-assets
  properties:
  - type: OpenAPI
    url: openapi/zenledger-aggregator-api-openapi.yml
  - type: Postman
    url: postman/zenledger-aggregators-v1.postman_collection.json
  - type: Documentation
    url: https://docs.zenledger.io/aggregators/rest-api/v1/
  - type: APIReference
    url: https://docs.zenledger.io/aggregators/rest-api/v1/README.md
  - type: Overlay
    url: overlays/zenledger-aggregator-api-overlay.yaml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://zenledger.io/
- type: DeveloperPortal
  url: https://docs.zenledger.io/
- type: Documentation
  url: https://docs.zenledger.io/
- type: APIReference
  url: https://docs.zenledger.io/compliance/v3/README.md
- type: Postman
  url: postman/zenledger-compliance-v3.postman_collection.json
- type: GitHubOrganization
  url: https://github.com/zenledger-io
- type: Support
  url: https://support.zenledger.io/en/
- type: Pricing
  url: https://zenledger.io/pricing/
- type: TermsOfService
  url: https://zenledger.io/terms-of-use/
- type: PrivacyPolicy
  url: https://zenledger.io/privacy-policy/
- type: StatusPage
  url: https://status.zenledger.io/
- type: Authentication
  url: authentication/zenledger-authentication.yml
- type: Conventions
  url: conventions/zenledger-conventions.yml
- type: ErrorCatalog
  url: errors/zenledger-error-codes.yml
- type: Lifecycle
  url: lifecycle/zenledger-lifecycle.yml
- type: DataModel
  url: data-model/zenledger-data-model.yml
- type: Conformance
  url: conformance/zenledger-conformance.yml
- type: Compliance
  url: conformance/zenledger-conformance.yml
- type: Security
  url: security/zenledger-vulnerability-disclosure.yml
- type: VulnerabilityDisclosure
  url: security/zenledger-vulnerability-disclosure.yml
- type: TrustCenter
  url: security/zenledger-trust-center.yml
- type: DomainSecurity
  url: security/zenledger-domain-security.yml
- type: Packages
  url: packages/zenledger-packages.yml
- type: Plans
  url: plans/zenledger-plans-pricing.yml
- type: RateLimits
  url: rate-limits/zenledger-rate-limits.yml
- type: X-MCPServerCandidate
  url: mcp/zenledger-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/zenledger-llms.txt
x-enrichment:
  date: '2026-09-05'
  status: enriched
  artifacts_added: 27
  pass: local-v3

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ZenLedger

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APIs 2

ZenLedger Compliance Suite API

ZenLedger Aggregator Suite API

Postman Collections 2

Aggregator Suite: REST API Reference

V3::Compliance Suite: REST API Reference

Pricing Plans 1

Zenledger Plans Pricing

Rate Limits 1

Zenledger Rate Limits

Event Specifications 1

Zenledger Compliance Webhooks

Security Posture 4

Zenledger Authentication

Zenledger Domain Security

Zenledger Vulnerability Disclosure

Zenledger Trust Center

Resources