Flanks

Flanks is an AI-powered wealth data platform, headquartered in Barcelona with offices in Madrid, Paris, and London, that aggregates and standardizes investment and banking data from 700+ financial institutions into a single unified model. It serves financial advisors, banks, family offices, and asset managers through its Aggregate and Lume modules, processing millions of portfolios monthly across the EU. The Flanks API exposes an OAuth2-secured Connect flow (link accounts, resolve MFA/SCA challenges), plus Credentials, Entities, Aggregation, and Letters APIs that return portfolios, investments, accounts, liabilities, cards, and their transactions. A hosted Model Context Protocol (MCP) server gives AI assistants direct, OAuth-secured access to the same multi-bank investment data.

Flanks publishes 1 API on the APIs.io network. Tagged areas include Company, Wealth Management, Financial Data, Data Aggregation, and Fintech.

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

🌐 Visit website 📡 Source on GitHub
38.1/100 thin Agent 36/100 agent aware Full breakdown ↓
scored 2026-07-20 · rubric v0.4
1 APIs 1 MCP Servers 0 Features
CompanyWealth ManagementFinancial DataData AggregationFintechInvestmentsOpen BankingAPIs

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4
Composite quality — 38.1/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 14.8 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 36/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 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 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 3 / 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/flanks: 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

Flanks API

OAuth2-secured wealth-data API covering the Connect flow (connectors, sessions, SCA resolution), Credentials, Entities, Aggregation, and Letters, returning standardized portfoli...

MCP Servers

flanks-mcp.yml

MCP SERVER

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 Sandbox
Sandbox
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 WellKnown
WellKnown
 LLMsTxt
LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 DataModel
DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs
 GitHubOrganization
GitHubOrganization

Access & Security 7

Authentication, authorization, and security posture

Authentication
Authentication
 SecurityTxt
SecurityTxt
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security
 TrustCenter
TrustCenter
 Compliance
Compliance
 DomainSecurity
DomainSecurity

Scroll for all 7

Operate 2

Status, limits, changes, and where to get help

ChangeLog
ChangeLog
 Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: flanks
name: Flanks
description: Flanks is an AI-powered wealth data platform, headquartered in Barcelona with offices in Madrid, Paris, and London,
  that aggregates and standardizes investment and banking data from 700+ financial institutions into a single unified model.
  It serves financial advisors, banks, family offices, and asset managers through its Aggregate and Lume modules, processing
  millions of portfolios monthly across the EU. The Flanks API exposes an OAuth2-secured Connect flow (link accounts, resolve
  MFA/SCA challenges), plus Credentials, Entities, Aggregation, and Letters APIs that return portfolios, investments, accounts,
  liabilities, cards, and their transactions. A hosted Model Context Protocol (MCP) server gives AI assistants direct, OAuth-secured
  access to the same multi-bank investment data.
url: https://raw.githubusercontent.com/api-evangelist/flanks/refs/heads/main/apis.yml
image: https://cdn.prod.website-files.com/66d71d258c24eef64e16030e/66e002e85abba93409df5c36_flanks-opengrapfh.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- battery-ventures
- earlybird
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Wealth Management
- Financial Data
- Data Aggregation
- Fintech
- Investments
- Open Banking
- APIs
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: Flanks API
  description: OAuth2-secured wealth-data API covering the Connect flow (connectors, sessions, SCA resolution), Credentials,
    Entities, Aggregation, and Letters, returning standardized portfolios, investments, accounts, liabilities, and cards from
    700+ financial institutions.
  humanURL: https://docs.flanks.io/
  baseURL: https://api.flanks.io
  tags:
  - Wealth Management
  - Financial Data
  - Aggregation
  properties:
  - type: Authentication
    url: authentication/flanks-authentication.yml
  - type: Documentation
    url: https://docs.flanks.io/
  - type: APIReference
    url: https://docs.flanks.io/pages/flanks-apis/connect-api/v2/
  - type: GettingStarted
    url: https://docs.flanks.io/pages/integration-example/
common:
- type: DeveloperPortal
  url: https://docs.flanks.io/
- type: Documentation
  url: https://docs.flanks.io/
- type: APIReference
  url: https://docs.flanks.io/pages/flanks-apis/connect-api/v2/
- type: GettingStarted
  url: https://docs.flanks.io/pages/integration-example/
- type: Authentication
  url: authentication/flanks-authentication.yml
- type: MCPServer
  url: mcp/flanks-mcp.yml
- type: WellKnown
  url: well-known/flanks-well-known.yml
- type: SecurityTxt
  url: well-known/flanks-security.txt
- type: VulnerabilityDisclosure
  url: security/flanks-vulnerability-disclosure.yml
- type: Security
  url: https://www.flanks.io/responsible-disclosure
- type: TrustCenter
  url: https://www.flanks.io/security-and-privacy
- type: Compliance
  url: https://www.flanks.io/security-and-privacy
- type: Conformance
  url: conformance/flanks-conformance.yml
- type: DomainSecurity
  url: security/flanks-domain-security.yml
- type: Conventions
  url: conventions/flanks-conventions.yml
- type: ChangeLog
  url: changelog/flanks-changelog.yml
- type: ErrorCatalog
  url: errors/flanks-problem-types.yml
- type: Lifecycle
  url: lifecycle/flanks-lifecycle.yml
- type: Sandbox
  url: sandbox/flanks-sandbox.yml
- type: DataModel
  url: data-model/flanks-data-model.yml
- type: Packages
  url: packages/flanks-packages.yml
- type: SDKs
  url: packages/flanks-packages.yml
- type: LLMsTxt
  url: llms/flanks-llms.txt
- type: Blog
  url: https://www.flanks.io/blog
- type: Support
  url: https://www.flanks.io/customer-service
- type: Login
  url: https://platform.flanks.io
- type: TermsOfService
  url: https://www.flanks.io/terms-conditions
- type: PrivacyPolicy
  url: https://www.flanks.io/privacy-policy
- type: GitHubOrganization
  url: https://github.com/flanksio
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence