Finmid website screenshot

Finmid

finmid is a Berlin-based embedded lending and B2B payments infrastructure provider that lets software platforms and marketplaces offer financing — cash advances, term loans, and business loans — to their customers across 30+ European markets without becoming a lender or handling the regulatory complexity themselves. finmid exposes two REST APIs: the B2B Payments API (buyer/seller onboarding, payment requests, payouts, and repayment) and the Capital API (pre-approved offer generation, an embeddable acceptance widget, business onboarding/KYB, fundings, and payments). Both APIs are JSON over HTTPS, authenticated with an environment-scoped X-API-Key header, with a separate sandbox environment, HMAC-signed webhooks for asynchronous events, and HTTP Message Signatures (RFC 9421, Ed25519) for platform-provided capital payout execution.

Finmid publishes 2 APIs on the APIs.io network. Tagged areas include Company, Embedded Finance, Embedded Lending, B2B Payments, and Fintech.

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

Finmid’s developer surface includes documentation, API reference, getting-started guide, engineering blog, signup flow, support, authentication, and 18 more developer resources.

37.3/100 thin ▬ flat Agent 33/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessSelf serve
2 APIs 1 MCP Servers
CompanyEmbedded FinanceEmbedded LendingB2B PaymentsFintechLendingCapitalFinancingPaymentsMarketplaces

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 37.3/100 · thin
Contract Quality 9.6 / 21
Developer Ergonomics 8.3 / 17
Access Clarity 3.6 / 17
Operational Transparency 2.5 / 11
Contract Governance 0.5 / 10
Discoverability 6.5 / 9
Regulatory Posture 5.9 / 15
Agent readiness — 33/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 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 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Regulatory Posture applies to this provider. Its tags matched the Payments 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.
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/.
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/finmid: 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 2

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

finmid B2B Payments API

Embed B2B payment and financing into a platform: onboard buyers and sellers, create payment requests financed by a finmid loan, create payouts, upload documents, and track repay...

finmid Capital API

Offer pre-approved, customizable financing to businesses on a platform: real-time offer generation, an embeddable acceptance widget (iframe), business onboarding and KYB, fundin...

MCP Servers 1

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

Finmid MCP Server

MCP SERVER

Event Specifications 1

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

Finmid Webhooks

ASYNCAPI

Security Posture 2

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

Finmid Authentication

apiKey/httpMessageSignatures · 2 schemes

SECURITY

Finmid Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 5

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Scroll for all 7

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: finmid
name: Finmid
description: 'finmid is a Berlin-based embedded lending and B2B payments infrastructure provider that lets software platforms
  and marketplaces offer financing — cash advances, term loans, and business loans — to their customers across 30+ European
  markets without becoming a lender or handling the regulatory complexity themselves. finmid exposes two REST APIs: the B2B
  Payments API (buyer/seller onboarding, payment requests, payouts, and repayment) and the Capital API (pre-approved offer
  generation, an embeddable acceptance widget, business onboarding/KYB, fundings, and payments). Both APIs are JSON over HTTPS,
  authenticated with an environment-scoped X-API-Key header, with a separate sandbox environment, HMAC-signed webhooks for
  asynchronous events, and HTTP Message Signatures (RFC 9421, Ed25519) for platform-provided capital payout execution.'
url: https://raw.githubusercontent.com/api-evangelist/finmid/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- earlybird
x-tier: profiled
x-tier-reason: enrichment-pipeline
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://finmid.com/icon-192x192.png
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Embedded Finance
- Embedded Lending
- B2B Payments
- Fintech
- Lending
- Capital
- Financing
- Payments
- Marketplaces
apis:
- name: finmid B2B Payments API
  description: 'Embed B2B payment and financing into a platform: onboard buyers and sellers, create payment requests financed
    by a finmid loan, create payouts, upload documents, and track repayment. JSON over HTTPS, X-API-Key auth, with a sandbox
    environment and simulation endpoints.'
  humanURL: https://docs.finmid.com/reference/api-introduction
  baseURL: https://api.finmid.com
  tags:
  - B2B Payments
  - Embedded Lending
  - Payments
  properties:
  - type: Documentation
    url: https://docs.finmid.com/docs/b2b-payments-core-concepts
  - type: Webhooks
    url: https://docs.finmid.com/docs/webhooks
- name: finmid Capital API
  description: 'Offer pre-approved, customizable financing to businesses on a platform: real-time offer generation, an embeddable
    acceptance widget (iframe), business onboarding and KYB, fundings, and business payments. JSON over HTTPS, X-API-Key auth,
    HMAC-signed webhooks, and RFC 9421 HTTP Message Signatures for platform-provided capital payouts.'
  humanURL: https://docs.finmid.com/docs/capital-core-concepts
  baseURL: https://api.finmid.com
  tags:
  - Capital
  - Embedded Lending
  - Financing
  properties:
  - type: Documentation
    url: https://docs.finmid.com/docs/capital-core-concepts
  - type: Webhooks
    url: https://docs.finmid.com/docs/capital-webhooks
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/finmid-domain-security.yml
- type: Website
  url: https://www.finmid.com
- type: DeveloperPortal
  url: https://docs.finmid.com
- type: Documentation
  url: https://docs.finmid.com
- type: APIReference
  url: https://docs.finmid.com/reference/api-introduction
- type: GettingStarted
  url: https://docs.finmid.com/docs/finmid-products
- type: Blog
  url: https://finmid.com/blog/
- type: GitHubOrganization
  url: https://github.com/finmid
- type: SignUp
  url: https://platform.finmid.com
- type: Login
  url: https://platform.finmid.com
- type: Support
  url: mailto:support@finmid.com
- type: TermsOfService
  url: https://finmid.com/legal/
- type: PrivacyPolicy
  url: https://finmid.com/privacy/
- type: StatusPage
  url: https://finmid.statuspage.io
- type: Lifecycle
  url: lifecycle/finmid-lifecycle.yml
- type: LLMsTxt
  url: llms/finmid-llms.txt
- type: Authentication
  url: authentication/finmid-authentication.yml
- type: Sandbox
  url: sandbox/finmid-sandbox.yml
- type: ErrorCatalog
  url: errors/finmid-error-codes.yml
- type: Webhooks
  url: asyncapi/finmid-webhooks.yml
- type: Conventions
  url: conventions/finmid-conventions.yml
- type: Components
  url: components/finmid-components.yml
- type: Conformance
  url: conformance/finmid-conformance.yml
- type: MCPServer
  url: mcp/finmid-mcp.yml
- type: DataModel
  url: data-model/finmid-data-model.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence