Lemon Markets

lemon.markets is a Berlin-based, BaFin-licensed Brokerage-as-a-Service provider that sells white-label investment infrastructure as an API. Partners embed securities trading in their own products without holding a licence or operating custody, order routing, settlement, tax and reporting themselves. The Brokerage API covers account opening and KYC/ID+V, business and BPO accounts, securities accounts, instruments and prices across 10,000+ ETFs, stocks, bonds and funds, single and batch orders, trades, positions and financials, withdrawals and balance sweeps, corporate actions and income distributions, treasury mandates and transfers, German tax exemption orders (Freistellungsauftrag), documents, cash settlement, and recurring-investment workflows for savings plans. It is a REST API over JSON with bearer API-key auth, cursor pagination, an Idempotency-Key header on order creation, HMAC-signed webhooks across 83 event types, and a sandbox environment with published test ISINs. The API is invite-only.

Lemon Markets publishes 17 APIs on the APIs.io network, including Accounts: General API, Accounts: ID+V API, Batch Orders API, and 14 more. Tagged areas include Company, Brokerage, Trading, Investing, and Securities.

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

Lemon Markets’ developer surface includes documentation, API reference, getting-started guide, engineering blog, support, changelog, authentication, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub
51.4/100 developing ▬ flat Agent 69/100 agent native Full breakdown ↓
scored 2026-07-23 · rubric v0.5
AccessSelf serve
17 APIs 1 MCP Servers
CompanyBrokerageTradingInvestingSecuritiesFinancial ServicesBanking as a ServiceFintechWealth ManagementEmbedded FinanceGermany

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-23 · rubric v0.5
Composite quality — 51.4/100 · developing
Contract Quality 15.1 / 25
Developer Ergonomics 14.8 / 20
Commercial Clarity 4.2 / 20
Operational Transparency 6.8 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 69/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
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/lemon-markets: 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 17

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

Lemon Markets Accounts: General API

The Accounts: General API from Lemon Markets — 6 operation(s) for accounts: general.

Lemon Markets Accounts: ID+V API

The Accounts: ID+V API from Lemon Markets — 3 operation(s) for accounts: id+v.

Lemon Markets Batch Orders API

The Batch Orders API from Lemon Markets — 4 operation(s) for batch orders.

Lemon Markets Businesses API

The Businesses API from Lemon Markets — 5 operation(s) for businesses.

Lemon Markets Cash Settlement API

The Cash Settlement API from Lemon Markets — 5 operation(s) for cash settlement.

Lemon Markets Corporate Actions API

The Corporate Actions API from Lemon Markets — 6 operation(s) for corporate actions.

Lemon Markets Documents API

The Documents API from Lemon Markets — 4 operation(s) for documents.

Lemon Markets Events + Webhooks API

The Events + Webhooks API from Lemon Markets — 3 operation(s) for events + webhooks.

Lemon Markets Instruments API

The Instruments API from Lemon Markets — 4 operation(s) for instruments.

Lemon Markets Money + Positions API

The Money + Positions API from Lemon Markets — 9 operation(s) for money + positions.

Lemon Markets Orders API

The Orders API from Lemon Markets — 4 operation(s) for orders.

Lemon Markets Persons API

The Persons API from Lemon Markets — 4 operation(s) for persons.

Lemon Markets Securities Accounts API

The Securities Accounts API from Lemon Markets — 2 operation(s) for securities accounts.

Lemon Markets Taxes API

The Taxes API from Lemon Markets — 4 operation(s) for taxes.

Lemon Markets Trades API

The Trades API from Lemon Markets — 2 operation(s) for trades.

Lemon Markets Treasury Mandates API

The Treasury Mandates API from Lemon Markets — 9 operation(s) for treasury mandates.

Lemon Markets Workflows API

Use workflows to perform repetitive tasks automatically.

Scroll for all 17

MCP Servers 1

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

lemon-markets-mcp.yml

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Lemon Markets Brokerage Webhooks

ASYNCAPI

Security Posture 2

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

Lemon Markets Authentication

http · 1 scheme

SECURITY

Lemon Markets Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 Sandbox
Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

WellKnown
WellKnown
 LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Idempotency
Idempotency
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel
 Webhooks
Webhooks

Scroll for all 7

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 5

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 ChangeLog
ChangeLog
 ChangeLog
ChangeLog
 Deprecation
Deprecation

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: lemon-markets
name: Lemon Markets
description: lemon.markets is a Berlin-based, BaFin-licensed Brokerage-as-a-Service provider that sells white-label investment
  infrastructure as an API. Partners embed securities trading in their own products without holding a licence or operating
  custody, order routing, settlement, tax and reporting themselves. The Brokerage API covers account opening and KYC/ID+V,
  business and BPO accounts, securities accounts, instruments and prices across 10,000+ ETFs, stocks, bonds and funds, single
  and batch orders, trades, positions and financials, withdrawals and balance sweeps, corporate actions and income distributions,
  treasury mandates and transfers, German tax exemption orders (Freistellungsauftrag), documents, cash settlement, and recurring-investment
  workflows for savings plans. It is a REST API over JSON with bearer API-key auth, cursor pagination, an Idempotency-Key
  header on order creation, HMAC-signed webhooks across 83 event types, and a sandbox environment with published test ISINs.
  The API is invite-only.
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://lemon.markets/apple-touch-icon.png
url: https://raw.githubusercontent.com/api-evangelist/lemon-markets/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- lightspeed-venture-partners
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Brokerage
- Trading
- Investing
- Securities
- Financial Services
- Banking as a Service
- Fintech
- Wealth Management
- Embedded Finance
- Germany
apis:
- aid: lemon-markets:lemon-markets-accounts-general-api
  name: 'Lemon Markets Accounts: General API'
  description: 'The Accounts: General API from Lemon Markets — 6 operation(s) for accounts: general.'
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - 'Accounts: General'
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-accounts-general-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-accounts-id-v-api
  name: 'Lemon Markets Accounts: ID+V API'
  description: 'The Accounts: ID+V API from Lemon Markets — 3 operation(s) for accounts: id+v.'
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - 'Accounts: ID+V'
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-accounts-id-v-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-batch-orders-api
  name: Lemon Markets Batch Orders API
  description: The Batch Orders API from Lemon Markets — 4 operation(s) for batch orders.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Batch Orders
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-batch-orders-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-businesses-api
  name: Lemon Markets Businesses API
  description: The Businesses API from Lemon Markets — 5 operation(s) for businesses.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Businesses
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-businesses-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-cash-settlement-api
  name: Lemon Markets Cash Settlement API
  description: The Cash Settlement API from Lemon Markets — 5 operation(s) for cash settlement.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Cash Settlement
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-cash-settlement-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-corporate-actions-api
  name: Lemon Markets Corporate Actions API
  description: The Corporate Actions API from Lemon Markets — 6 operation(s) for corporate actions.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Corporate Actions
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-corporate-actions-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-documents-api
  name: Lemon Markets Documents API
  description: The Documents API from Lemon Markets — 4 operation(s) for documents.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-documents-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-events-webhooks-api
  name: Lemon Markets Events + Webhooks API
  description: The Events + Webhooks API from Lemon Markets — 3 operation(s) for events + webhooks.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Events + Webhooks
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-events-webhooks-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-instruments-api
  name: Lemon Markets Instruments API
  description: The Instruments API from Lemon Markets — 4 operation(s) for instruments.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Instruments
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-instruments-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-money-positions-api
  name: Lemon Markets Money + Positions API
  description: The Money + Positions API from Lemon Markets — 9 operation(s) for money + positions.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Money + Positions
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-money-positions-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-orders-api
  name: Lemon Markets Orders API
  description: The Orders API from Lemon Markets — 4 operation(s) for orders.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Orders
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-orders-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-persons-api
  name: Lemon Markets Persons API
  description: The Persons API from Lemon Markets — 4 operation(s) for persons.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Persons
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-persons-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-securities-accounts-api
  name: Lemon Markets Securities Accounts API
  description: The Securities Accounts API from Lemon Markets — 2 operation(s) for securities accounts.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Securities Accounts
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-securities-accounts-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-taxes-api
  name: Lemon Markets Taxes API
  description: The Taxes API from Lemon Markets — 4 operation(s) for taxes.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Taxes
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-taxes-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-trades-api
  name: Lemon Markets Trades API
  description: The Trades API from Lemon Markets — 2 operation(s) for trades.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Trades
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-trades-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-treasury-mandates-api
  name: Lemon Markets Treasury Mandates API
  description: The Treasury Mandates API from Lemon Markets — 9 operation(s) for treasury mandates.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Treasury Mandates
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-treasury-mandates-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
- aid: lemon-markets:lemon-markets-workflows-api
  name: Lemon Markets Workflows API
  description: Use workflows to perform repetitive tasks automatically.
  humanURL: https://developer.lemon.markets/
  baseURL: https://sandbox.api.lemon.markets/v1
  tags:
  - Workflows
  properties:
  - type: OpenAPI
    url: openapi/lemon-markets-workflows-api-openapi.yml
  - type: Documentation
    url: https://developer.lemon.markets/docs
  - type: APIReference
    url: https://developer.lemon.markets/reference
  - type: GettingStarted
    url: https://developer.lemon.markets/docs/getting-started
  - type: Webhooks
    url: asyncapi/lemon-markets-brokerage-webhooks.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DeveloperPortal
  url: https://developer.lemon.markets/
- type: Documentation
  url: https://developer.lemon.markets/docs
- type: APIReference
  url: https://developer.lemon.markets/reference
- type: GettingStarted
  url: https://developer.lemon.markets/docs/getting-started
- type: Website
  url: https://lemon.markets/
- type: Blog
  url: https://lemon.markets/en-de/blog
- type: Support
  url: https://lemon.markets/en-de/contact
- type: GitHubOrganization
  url: https://github.com/lemon-markets
- type: TermsOfService
  url: https://lemon.markets/en-de/terms-of-use
- type: PrivacyPolicy
  url: https://lemon.markets/en-de/privacy-policy
- type: StatusPage
  url: https://status.lemon.markets/
- type: ChangeLog
  url: https://developer.lemon.markets/changelog
- type: ChangeLog
  url: changelog/lemon-markets-changelog.yml
- type: Authentication
  url: authentication/lemon-markets-authentication.yml
- type: Conventions
  url: conventions/lemon-markets-conventions.yml
- type: Idempotency
  url: conventions/lemon-markets-conventions.yml
- type: ErrorCatalog
  url: errors/lemon-markets-problem-types.yml
- type: Lifecycle
  url: lifecycle/lemon-markets-lifecycle.yml
- type: Deprecation
  url: lifecycle/lemon-markets-lifecycle.yml
- type: Sandbox
  url: sandbox/lemon-markets-sandbox.yml
- type: Conformance
  url: conformance/lemon-markets-conformance.yml
- type: DataModel
  url: data-model/lemon-markets-data-model.yml
- type: Packages
  url: packages/lemon-markets-packages.yml
- type: WellKnown
  url: well-known/lemon-markets-well-known.yml
- type: DomainSecurity
  url: security/lemon-markets-domain-security.yml
- type: LLMsTxt
  url: llms/lemon-markets-llms.txt
- type: MCPServer
  url: mcp/lemon-markets-mcp.yml
- type: Webhooks
  url: asyncapi/lemon-markets-brokerage-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence