FDC3 website screenshot

FDC3

FDC3 (Financial Desktop Connectivity and Collaboration Consortium) is an open standard hosted by FINOS for interoperability between financial desktop applications. The standard defines how applications launch other apps, share typed context data, raise and resolve intents across the financial desktop, and register themselves in an App Directory. FDC3 eliminates the need for custom bilateral agreements between software vendors and enables plug-and-play integration workflows for financial services firms. Current version is 2.2, licensed under the Community Specification License 1.0 with code released under Apache 2.0.

FDC3 publishes 2 APIs on the APIs.io network: App Directory API and Application API. Tagged areas include Financial Services, Fintech, Desktop Interoperability, Open Standard, and FINOS.

The FDC3 catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

FDC3’s developer surface includes authentication, documentation, engineering blog, changelog, status page, and 11 more developer resources.

50.6/100 developing ▼ -5.6 Agent 41/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
6 APIs
Financial ServicesFintechDesktop InteroperabilityOpen StandardFINOSContext SharingIntents

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 50.6/100 · developing
Contract Quality 14.1 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 6.8 / 13
Governance 7.0 / 12
Discoverability 7.4 / 10
Agent readiness — 41/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 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 0 / 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
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/fdc3: 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 6

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

FDC3 Desktop Agent API

The FDC3 Desktop Agent API is the primary interface for application interoperability on the financial desktop. It provides a JavaScript/TypeScript API that applications use to o...

FDC3 App Directory API

The FDC3 App Directory (AppD) is a REST API standard for registering and discovering financial desktop applications. Desktop Agents query App Directories to resolve application ...

FDC3 Context Data

FDC3 Context Data defines a standard set of typed data structures used to carry information between financial applications when broadcasting or raising intents. Context types in...

FDC3 Intents

FDC3 Intents are standardized verbs that applications use to request functionality from other applications on the financial desktop. Standard intents include ViewChart, ViewQuot...

FDC3 Desktop Agent Bridging

FDC3 Desktop Agent Bridging (DAB) is a wire protocol that enables multiple Desktop Agent implementations to interoperate, allowing applications running under different Desktop A...

FDC3 Application API

The Application API from FDC3 — 5 operation(s) for application.

Pricing Plans 1

Published pricing tiers and plan structures.

Fdc3 Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fdc3 Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Fdc3 Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Fdc3 Context

28 classes · 19 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

FDC3 API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Appd.Schema

0 properties

JSON SCHEMA

Examples 1

Example request and response payloads for these APIs.

Fdc3 Workbench App

17 fields

EXAMPLE

Security Posture 2

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

Fdc3 Authentication

http · 1 scheme

SECURITY

Fdc3 Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Fdc3 Agentic Access

21 operations · 5 acting

21 operations · 5 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 4

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

Other 2

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: fdc3
name: FDC3
description: FDC3 (Financial Desktop Connectivity and Collaboration Consortium) is an open standard hosted by FINOS for interoperability
  between financial desktop applications. The standard defines how applications launch other apps, share typed context data,
  raise and resolve intents across the financial desktop, and register themselves in an App Directory. FDC3 eliminates the
  need for custom bilateral agreements between software vendors and enables plug-and-play integration workflows for financial
  services firms. Current version is 2.2, licensed under the Community Specification License 1.0 with code released under
  Apache 2.0.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
position: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fdc3.png
tags:
- Financial Services
- Fintech
- Desktop Interoperability
- Open Standard
- FINOS
- Context Sharing
- Intents
created: '2026-06-13'
modified: '2026-06-13'
url: https://raw.githubusercontent.com/api-evangelist/fdc3/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: fdc3:desktop-agent-api
  name: FDC3 Desktop Agent API
  description: The FDC3 Desktop Agent API is the primary interface for application interoperability on the financial desktop.
    It provides a JavaScript/TypeScript API that applications use to open other applications, raise intents to request functionality
    from peer apps, broadcast typed context data on channels, listen for incoming context and intents, discover available
    applications and their capabilities, and create private two-party communication channels. Desktop Agents implement this
    API and expose it to the applications they host.
  humanURL: https://fdc3.finos.org/docs/api/spec
  baseURL: https://fdc3.finos.org
  tags:
  - Desktop Agent
  - Intents
  - Context Sharing
  - Channels
  - Financial Services
  - Open Standard
  properties:
  - type: Documentation
    url: https://fdc3.finos.org/docs/api/spec
  - type: Reference
    url: https://fdc3.finos.org/docs/api/ref/DesktopAgent
  - type: GitHubRepository
    url: https://github.com/finos/FDC3
  - type: TypeScriptSDK
    url: https://www.npmjs.com/package/@finos/fdc3
  - type: ChangeLog
    url: https://github.com/finos/FDC3/blob/main/CHANGELOG.md
  - type: OpenSource
    url: https://github.com/finos/FDC3/blob/main/LICENSE.md
- aid: fdc3:app-directory-api
  name: FDC3 App Directory API
  description: The FDC3 App Directory (AppD) is a REST API standard for registering and discovering financial desktop applications.
    Desktop Agents query App Directories to resolve application definitions when launching apps or resolving intents. The
    v2 endpoints are the current standard, supporting retrieval of all app definitions and lookup by appId. Authentication
    is supported via HTTP Authorization Bearer JWT tokens. Implementations are provided by vendors and financial institutions;
    FINOS publishes the specification and JSON schema.
  humanURL: https://fdc3.finos.org/docs/app-directory/spec
  baseURL: https://appd.example.com
  tags:
  - App Directory
  - Application Registry
  - REST API
  - Financial Services
  - Open Standard
  properties:
  - type: Documentation
    url: https://fdc3.finos.org/docs/app-directory/spec
  - type: OpenAPISpec
    url: https://fdc3.finos.org/schemas/2.2/app-directory.html
  - type: JSONSchema
    url: https://fdc3.finos.org/schemas/2.2/appd.schema.json
  - type: GitHubRepository
    url: https://github.com/finos/FDC3
  - type: Reference
    url: https://fdc3.finos.org/docs/app-directory/overview
- aid: fdc3:context-data
  name: FDC3 Context Data
  description: FDC3 Context Data defines a standard set of typed data structures used to carry information between financial
    applications when broadcasting or raising intents. Context types include instruments, positions, portfolios, contacts,
    organizations, orders, charts, country, currency, date range, email, and more. Each context type has a JSON schema definition.
    Applications share and receive these typed objects through the Desktop Agent API channels and intent resolution, enabling
    interoperability without custom data mapping.
  humanURL: https://fdc3.finos.org/docs/context/spec
  baseURL: https://fdc3.finos.org
  tags:
  - Context Data
  - JSON Schema
  - Financial Data
  - Instruments
  - Open Standard
  properties:
  - type: Documentation
    url: https://fdc3.finos.org/docs/context/spec
  - type: JSONSchema
    url: https://fdc3.finos.org/schemas/2.2/context/
  - type: Reference
    url: https://fdc3.finos.org/docs/context/ref/Instrument
  - type: GitHubRepository
    url: https://github.com/finos/FDC3
- aid: fdc3:intents
  name: FDC3 Intents
  description: FDC3 Intents are standardized verbs that applications use to request functionality from other applications
    on the financial desktop. Standard intents include ViewChart, ViewQuote, ViewNews, ViewAnalysis, ViewInstrument, ViewHoldings,
    ViewOrders, ViewResearch, ViewProfile, ViewInteractions, ViewMessages, ViewChat, StartCall, StartChat, StartEmail, CreateInteraction,
    and CreateOrUpdateProfile. Applications declare which intents they handle in their App Directory entry, and the Desktop
    Agent routes intent requests to appropriate handler apps.
  humanURL: https://fdc3.finos.org/docs/intents/spec
  baseURL: https://fdc3.finos.org
  tags:
  - Intents
  - Interoperability
  - Financial Services
  - Workflow
  - Open Standard
  properties:
  - type: Documentation
    url: https://fdc3.finos.org/docs/intents/spec
  - type: Reference
    url: https://fdc3.finos.org/docs/intents/ref/ViewChart
  - type: GitHubRepository
    url: https://github.com/finos/FDC3
- aid: fdc3:desktop-agent-bridging
  name: FDC3 Desktop Agent Bridging
  description: FDC3 Desktop Agent Bridging (DAB) is a wire protocol that enables multiple Desktop Agent implementations to
    interoperate, allowing applications running under different Desktop Agents to share context and raise intents with each
    other. The bridging specification defines a WebSocket-based protocol for agent-to-agent communication, enabling cross-agent
    context broadcasting and cross-agent intent resolution within the same desktop environment or across network boundaries.
  humanURL: https://fdc3.finos.org/docs/agent-bridging/spec
  baseURL: https://fdc3.finos.org
  tags:
  - Desktop Agent Bridging
  - WebSocket
  - Interoperability
  - Financial Services
  - Open Standard
  properties:
  - type: Documentation
    url: https://fdc3.finos.org/docs/agent-bridging/spec
  - type: GitHubRepository
    url: https://github.com/finos/FDC3
- aid: fdc3:fdc3-application-api
  name: FDC3 Application API
  description: The Application API from FDC3 — 5 operation(s) for application.
  humanURL: https://fdc3.finos.org/docs/api/spec
  baseURL: https://fdc3.finos.org
  tags:
  - Application
  properties:
  - type: OpenAPI
    url: openapi/fdc3-application-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/fdc3-agentic-access.yml
- type: DomainSecurity
  url: security/fdc3-domain-security.yml
- type: Authentication
  url: authentication/fdc3-authentication.yml
- type: Website
  url: https://fdc3.finos.org
- type: Documentation
  url: https://fdc3.finos.org/docs/fdc3-intro
- type: GitHubOrg
  url: https://github.com/finos
- type: GitHubRepository
  url: https://github.com/finos/FDC3
- type: Slack
  url: https://finos-lf.slack.com/messages/fdc3
- type: MailingList
  url: mailto:fdc3+subscribe@finos.org
- type: Community
  url: https://www.finos.org/community
- type: Blog
  url: https://www.finos.org/blog
- type: ChangeLog
  url: https://github.com/finos/FDC3/blob/main/CHANGELOG.md
- type: License
  url: https://github.com/finos/FDC3/blob/main/LICENSE.md
- type: TermsOfService
  url: https://github.com/finos/FDC3/blob/main/LICENSE.md
- type: Contributing
  url: https://github.com/finos/FDC3/blob/main/CONTRIBUTING.md
- type: Status
  url: https://github.com/finos/FDC3/releases
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com