Finnhub

With the sole mission of democratizing financial data, we are proud to offer a FREE realtime API for stocks, forex and cryptocurrency. With this API, you can access realtime market data from stock exchanges, 10 forex brokers, and 15+ crypto exchanges.

Finnhub publishes 7 APIs on the APIs.io network, including Company News API, Crypto API, Forex API, and 4 more. Tagged areas include Financial, Market Data, Stocks, Forex, and Cryptocurrency.

The Finnhub catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Finnhub’s developer surface includes authentication, documentation, API reference, support, pricing, signup flow, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub

48.2/100 developing ▬ flat Agent 35/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessFreemiumSelf serve⚡ Free to try

7 APIs 1 MCP Servers

Financial Market Data Stocks Forex Cryptocurrency Fundamentals News WebSocket

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 48.2/100 · developing

Contract Quality 12.3 / 21

Developer Ergonomics 8.0 / 17

Access Clarity 8.5 / 17

Operational Transparency 1.2 / 11

Contract Governance 2.9 / 10

Discoverability 6.9 / 9

Regulatory Posture 6.8 / 15

Agent readiness — 35/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 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 Securities & Market Data 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/finnhub: 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 7

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

Open Collections 10

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

MCP Servers 1

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

Rate Limits 1

Documented rate limits and quota policies.

Finnhub Rate Limits

6 limits

RATE LIMITS

FinOps 1

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

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Signup

Signup

Documentation 3

Reference material describing how the API behaves

OpenAPI

OpenAPI

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

MCPServer

LLMsTxt

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Build 5

SDKs, sample code, and the tooling you integrate with

Packages

SDKs

ToolCrosswalk

Postman

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

FinOps

TermsOfService

Pricing

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: finnhub
name: Finnhub
description: With the sole mission of democratizing financial data, we are proud to offer a FREE realtime API for stocks,
  forex and cryptocurrency. With this API, you can access realtime market data from stock exchanges, 10 forex brokers, and
  15+ crypto exchanges.
kind: contract
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
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/finnhub.png
access: 3rd-Party
created: '2025-02-08'
modified: '2026-07-22'
position: Consumer
tags:
- Financial
- Market Data
- Stocks
- Forex
- Cryptocurrency
- Fundamentals
- News
- WebSocket
url: https://raw.githubusercontent.com/api-evangelist/finnhub/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: finnhub:finnhub-company-news-api
  name: Finnhub Company News API
  description: The Company News API from Finnhub — 1 operation(s) for company news.
  humanURL: https://finnhub.io/docs/api
  baseURL: https://finnhub.io/api/v1
  tags:
  - Company News
  properties:
  - type: OpenAPI
    url: openapi/finnhub-company-news-api-openapi.yml
- aid: finnhub:finnhub-crypto-api
  name: Finnhub Crypto API
  description: The Crypto API from Finnhub — 3 operation(s) for crypto.
  humanURL: https://finnhub.io/docs/api
  baseURL: https://finnhub.io/api/v1
  tags:
  - Crypto
  properties:
  - type: OpenAPI
    url: openapi/finnhub-crypto-api-openapi.yml
- aid: finnhub:finnhub-forex-api
  name: Finnhub Forex API
  description: The Forex API from Finnhub — 3 operation(s) for forex.
  humanURL: https://finnhub.io/docs/api
  baseURL: https://finnhub.io/api/v1
  tags:
  - Forex
  properties:
  - type: OpenAPI
    url: openapi/finnhub-forex-api-openapi.yml
- aid: finnhub:finnhub-news-api
  name: Finnhub News API
  description: The News API from Finnhub — 1 operation(s) for news.
  humanURL: https://finnhub.io/docs/api
  baseURL: https://finnhub.io/api/v1
  tags:
  - News
  properties:
  - type: OpenAPI
    url: openapi/finnhub-news-api-openapi.yml
- aid: finnhub:finnhub-quote-api
  name: Finnhub Quote API
  description: The Quote API from Finnhub — 1 operation(s) for quote.
  humanURL: https://finnhub.io/docs/api
  baseURL: https://finnhub.io/api/v1
  tags:
  - Quotes
  tags_raw:
  - Quote
  properties:
  - type: OpenAPI
    url: openapi/finnhub-quote-api-openapi.yml
- aid: finnhub:finnhub-search-api
  name: Finnhub Search API
  description: The Search API from Finnhub — 1 operation(s) for search.
  humanURL: https://finnhub.io/docs/api
  baseURL: https://finnhub.io/api/v1
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/finnhub-search-api-openapi.yml
- aid: finnhub:finnhub-stock-api
  name: Finnhub Stock API
  description: The Stock API from Finnhub — 5 operation(s) for stock.
  humanURL: https://finnhub.io/docs/api
  baseURL: https://finnhub.io/api/v1
  tags:
  - Stock
  properties:
  - type: OpenAPI
    url: openapi/finnhub-stock-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/finnhub-agentic-access.yml
- type: DomainSecurity
  url: security/finnhub-domain-security.yml
- type: Authentication
  url: authentication/finnhub-authentication.yml
- type: OpenAPI
  url: openapi/finnhub-swagger-original.json
- type: Packages
  url: packages/finnhub-packages.yml
- type: SDKs
  url: packages/finnhub-packages.yml
- type: MCPServer
  url: mcp/finnhub-mcp.yml
- type: ToolCrosswalk
  url: mcp/finnhub-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/finnhub-llms.txt
- type: Overlay
  url: overlays/finnhub-swagger-overlay.yaml
- type: Conformance
  url: conformance/finnhub-conformance.yml
- type: ErrorCatalog
  url: errors/finnhub-problem-types.yml
- type: Lifecycle
  url: lifecycle/finnhub-lifecycle.yml
- type: Conventions
  url: conventions/finnhub-conventions.yml
- type: DataModel
  url: data-model/finnhub-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: RateLimits
  url: rate-limits/finnhub-rate-limits.yml
- type: Plans
  url: plans/finnhub-plans-pricing.yml
- type: FinOps
  url: finops/finnhub-finops.yml
- type: Postman
  url: collections/finnhub.postman_collection.json
- type: LinkedIn
  url: https://www.linkedin.com/company/finnhub
- type: Website
  url: https://finnhub.io/
- type: Documentation
  url: https://finnhub.io/docs/api
- type: APIReference
  url: https://finnhub.io/docs/api
- type: GitHubOrganization
  url: https://github.com/Finnhub-Stock-API
- type: Support
  url: mailto:support@finnhub.io
- type: TermsOfService
  url: https://finnhub.io/terms-of-service
- type: Pricing
  url: https://finnhub.io/pricing
- type: Signup
  url: https://finnhub.io/register
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com