Donnerstag Ai website screenshot

Donnerstag Ai

Donnerstag.ai (Donnerstag.ai Technologies GmbH) is a Frankfurt-based enterprise fintech building an AI Reconciliation Layer for enterprise finance. Its platform automates financial reconciliation at the line-item level across accounts payable, accounts receivable, bank, and intercompany flows, adapting to each customer's systems, data sources, workflows, and roles. The stated goal is 100% line-item coverage at T+0 so the financial close becomes a confirmation rather than a month-end scramble, with an immutable audit trail for GoBD, IFRS, SOX, and BEPS. The company serves logistics, payment service providers, retail and e-commerce, manufacturing, human resources, and construction, is EU-hosted in Frankfurt, and is founded by Barbaros Ozbugutu and Volkan Ozkan and backed by Speedinvest. As a solution-and-services provider it exposes no public developer API, SDK, or docs.

Donnerstag Ai is profiled on the APIs.io network. Tagged areas include Company, Fintech, Reconciliation, Enterprise Finance, and Financial Automation.

Donnerstag Ai’s developer surface includes engineering blog and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
15.5/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyFintechReconciliationEnterprise FinanceFinancial AutomationAccounts PayableAccounts ReceivableArtificial IntelligencePaymentsGermany

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 15.5/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 5.3 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 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/donnerstag-ai: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 2

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

Donnerstag Ai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Donnerstag Ai Trust Center

ISO 27001

SECURITY

Resources

Access & Security 3

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 Compliance
Compliance
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Contact
Contact

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

Website
Website
 Blog
Blog
 LinkedIn
LinkedIn

Other 2

Properties that don't map to a standard resource type

Whitepapers
Whitepapers
 Imprint
Imprint

Source (apis.yml)

apis.yml Raw ↑ 
aid: donnerstag-ai
name: Donnerstag Ai
description: Donnerstag.ai (Donnerstag.ai Technologies GmbH) is a Frankfurt-based enterprise fintech building an AI Reconciliation
  Layer for enterprise finance. Its platform automates financial reconciliation at the line-item level across accounts payable,
  accounts receivable, bank, and intercompany flows, adapting to each customer's systems, data sources, workflows, and roles.
  The stated goal is 100% line-item coverage at T+0 so the financial close becomes a confirmation rather than a month-end
  scramble, with an immutable audit trail for GoBD, IFRS, SOX, and BEPS. The company serves logistics, payment service providers,
  retail and e-commerce, manufacturing, human resources, and construction, is EU-hosted in Frankfurt, and is founded by Barbaros
  Ozbugutu and Volkan Ozkan and backed by Speedinvest. As a solution-and-services provider it exposes no public developer
  API, SDK, or docs.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://framerusercontent.com/images/iAFSOvcJWm86sIBCSWs4r44RdvY.png
url: https://raw.githubusercontent.com/api-evangelist/donnerstag-ai/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- speedinvest
x-tier: profile
x-tier-reason: portfolio-lead-enriched
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Fintech
- Reconciliation
- Enterprise Finance
- Financial Automation
- Accounts Payable
- Accounts Receivable
- Artificial Intelligence
- Payments
- Germany
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.donnerstag.ai/
- type: Blog
  url: https://www.donnerstag.ai/resources/blog
- type: Whitepapers
  url: https://www.donnerstag.ai/resources/whitepapers
- type: PrivacyPolicy
  url: https://www.donnerstag.ai/privacy
- type: TrustCenter
  url: security/donnerstag-ai-trust-center.yml
- type: Compliance
  url: https://www.donnerstag.ai/trust
- type: DomainSecurity
  url: security/donnerstag-ai-domain-security.yml
- type: Contact
  url: https://147471513.hs-sites-eu1.com/en/book-a-meeting
- type: LinkedIn
  url: https://www.linkedin.com/company/donnerstag-ai
- type: Imprint
  url: https://www.donnerstag.ai/imprint
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence