Tradier

Tradier is a brokerage platform offering REST and WebSocket APIs for trading US equities, options, and futures, plus market data and account-opening services. The Tradier Brokerage API exposes account, trading, market data, fundamentals, watchlist, and streaming endpoints under a single base URL.

Tradier publishes 8 APIs on the APIs.io network, including Streaming API, Accounts API, Market Data API, and 5 more. Tagged areas include Fintech, Trading, Stocks, Options, and Brokerage.

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

Tradier’s developer surface includes authentication, developer portal, documentation, pricing, engineering blog, API reference, getting-started guide, and 35 more developer resources.

🌐 Visit website 📡 Source on GitHub

56.6/100 strong ▬ flat Agent 45/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemium

1 APIs 1 MCP Servers

Fintech Trading Stocks Options Brokerage Streaming

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 56.6/100 · strong

Contract Quality 11.0 / 19

Developer Ergonomics 7.8 / 15

Access Clarity 7.1 / 15

Operational Transparency 5.1 / 10

Contract Governance 1.4 / 9

Discoverability 5.7 / 8

Regulatory Posture 11.7 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 45/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

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 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

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime (on an ambiguous tag, where no other regime matched), 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.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/tradier: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 10

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

Tradier Brokerage API

The Tradier Brokerage API provides REST endpoints for placing equity, option, and multileg orders, retrieving account balances, positions, orders, and history, and accessing mar...

Tradier Streaming API

The Tradier Streaming API delivers real-time market and account events over HTTP and WebSocket. Quote, trade, summary, timesale, and order events are streamed; client first crea...

Tradier MCP Server

Tradier's official hosted MCP server (launched July 2026) connects AI assistants like ChatGPT, Claude, Gemini CLI, and Cursor directly to a Tradier brokerage account over Stream...

Tradier Accounts API

The Accounts API from Tradier — 4 operation(s) for accounts.

Tradier Market Data API

The Market Data API from Tradier — 7 operation(s) for market data.

Tradier Options API

The Options API from Tradier — 3 operation(s) for options.

Tradier Streaming API

The Streaming API from Tradier — 2 operation(s) for streaming.

Tradier Trading API

The Trading API from Tradier — 2 operation(s) for trading.

Tradier User API

The User API from Tradier — 1 operation(s) for user.

Tradier Watchlists API

The Watchlists API from Tradier — 2 operation(s) for watchlists.

Scroll for all 10

Open Collections 1

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

Tradier Brokerage API

OPEN COLLECTION

MCP Servers 1

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

Tradier MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Tradier Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Tradier Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

Tradier Finops

FINOPS

Event Specifications 1

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

Tradier Streaming WebSocket API

AsyncAPI 2.6 description of Tradier's WebSocket streaming for market events and account events. A streaming session must first be created via the brokerage REST endpoints (POST ...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Tradier API Rules

7 rules · 1 errors 6 warnings

SPECTRAL

Security Posture 3

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

Tradier Authentication

http/oauth2 · 2 schemes

SECURITY

Tradier Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Tradier Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Tradier Scopes

5 scopes · authorizationCode

5 scopes

SCOPES

Agentic Access 1

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

Tradier Agentic Access

28 operations · 9 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

Portal

GettingStarted

SignUp

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 6

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

LlmsText

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

ErrorCatalog

Lifecycle

Conventions

DataModel

Build 5

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

GitHubOrganization

ToolCrosswalk

Packages

SDKs

Access & Security 6

Authentication, authorization, and security posture

Authentication

Authentication

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

Security

SecurityTxt

OAuthScopes

Operate 4

Status, limits, changes, and where to get help

StatusPage

RateLimits

Support

ChangeLog

Commercial 5

Pricing, plans, and the legal terms of use

Pricing

Plans

FinOps

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: tradier
url: https://raw.githubusercontent.com/api-evangelist/tradier/refs/heads/main/apis.yml
name: Tradier
kind: company
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/tradier.png
tags:
- Fintech
- Trading
- Stocks
- Options
- Brokerage
- Streaming
created: '2026-05-08'
modified: '2026-07-22'
specificationVersion: '0.23'
description: Tradier is a brokerage platform offering REST and WebSocket APIs for trading US equities, options, and futures,
  plus market data and account-opening services. The Tradier Brokerage API exposes account, trading, market data, fundamentals,
  watchlist, and streaming endpoints under a single base URL.
apis:
- aid: tradier:brokerage-api
  name: Tradier Brokerage API
  tags:
  - Trading
  - Stocks
  - Options
  - Account
  - Order
  - Market Data
  tags_raw:
  - Trading
  - Stocks
  - Options
  - Account
  - Orders
  - Market Data
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.tradier.com/v1
  humanURL: https://docs.tradier.com/
  description: The Tradier Brokerage API provides REST endpoints for placing equity, option, and multileg orders, retrieving
    account balances, positions, orders, and history, and accessing market data including quotes, option chains, time and
    sales, fundamentals, and corporate calendars. A sandbox base URL is available at api.sandbox.tradier.com/v1.
  properties:
  - type: Documentation
    url: https://docs.tradier.com/
  - type: Sandbox
    url: https://api.sandbox.tradier.com/v1
  x-features:
  - Equity, option, and multileg order placement
  - Account balances, positions, history
  - Quotes, option chains, time and sales
  - Corporate calendars and fundamentals
  - Watchlists
  - Sandbox environment
  x-use-cases:
  - Build automated equity and options trading systems
  - Power retail trading and watchlist apps
  - Backtest using sandbox accounts
- aid: tradier:streaming-api
  name: Tradier Streaming API
  tags:
  - Streaming
  - WebSocket
  - HTTP
  - Real-Time
  - Market Data
  tags_raw:
  - Streaming
  - WebSocket
  - HTTP
  - Real-time
  - Market Data
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://stream.tradier.com/v1
  humanURL: https://docs.tradier.com/brokerage-api/streaming
  description: The Tradier Streaming API delivers real-time market and account events over HTTP and WebSocket. Quote, trade,
    summary, timesale, and order events are streamed; client first creates a session via the brokerage REST endpoints and
    connects to stream.tradier.com.
  properties:
  - type: Documentation
    url: https://docs.tradier.com/brokerage-api/streaming
  - type: AsyncAPI
    url: asyncapi/tradier-asyncapi.yml
  x-features:
  - HTTP and WebSocket streaming
  - Quote, trade, summary, timesale events
  - Account-level order events
  x-use-cases:
  - Stream live ticks into trading bots
  - Power real-time UI updates
  - Monitor order state changes in real time
- aid: tradier:mcp-server
  name: Tradier MCP Server
  tags:
  - MCP
  - Agents
  - Trading
  - Market Data
  - Artificial Intelligence
  tags_raw:
  - MCP
  - Agents
  - Trading
  - Market Data
  - AI
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://mcp.tradier.com/mcp
  humanURL: https://docs.tradier.com/docs/tradier-mcp
  description: Tradier's official hosted MCP server (launched July 2026) connects AI assistants like ChatGPT, Claude, Gemini
    CLI, and Cursor directly to a Tradier brokerage account over Streamable HTTP. It exposes 21 tools for account data, equity/option/multileg/OCO/OTO/OTOCO
    order placement, market data, and watchlists, authenticated with the user's API token and a PAPER_TRADING flag for live-vs-paper
    switching.
  properties:
  - type: Documentation
    url: https://docs.tradier.com/docs/tradier-mcp
  - type: MCPServer
    url: mcp/tradier-mcp.yml
  - type: ToolCrosswalk
    url: mcp/tradier-tool-crosswalk.yml
  x-features:
  - 21 tools with public tools/list schemas
  - Streamable HTTP transport
  - Live and paper trading via PAPER_TRADING flag
  - Built-in documentation search
  x-use-cases:
  - Trade and manage a brokerage account from an AI assistant
  - Build agentic trading research workflows
  - Query market data conversationally
- aid: tradier:tradier-accounts-api
  name: Tradier Accounts API
  description: The Accounts API from Tradier — 4 operation(s) for accounts.
  humanURL: https://docs.tradier.com/
  baseURL: https://api.tradier.com/v1
  tags:
  - Account
  tags_raw:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/tradier-accounts-api-openapi.yml
- aid: tradier:tradier-market-data-api
  name: Tradier Market Data API
  description: The Market Data API from Tradier — 7 operation(s) for market data.
  humanURL: https://docs.tradier.com/
  baseURL: https://api.tradier.com/v1
  tags:
  - Market Data
  properties:
  - type: OpenAPI
    url: openapi/tradier-market-data-api-openapi.yml
- aid: tradier:tradier-options-api
  name: Tradier Options API
  description: The Options API from Tradier — 3 operation(s) for options.
  humanURL: https://docs.tradier.com/
  baseURL: https://api.tradier.com/v1
  tags:
  - Options
  properties:
  - type: OpenAPI
    url: openapi/tradier-options-api-openapi.yml
- aid: tradier:tradier-streaming-api
  name: Tradier Streaming API
  description: The Streaming API from Tradier — 2 operation(s) for streaming.
  humanURL: https://docs.tradier.com/
  baseURL: https://api.tradier.com/v1
  tags:
  - Streaming
  properties:
  - type: OpenAPI
    url: openapi/tradier-streaming-api-openapi.yml
- aid: tradier:tradier-trading-api
  name: Tradier Trading API
  description: The Trading API from Tradier — 2 operation(s) for trading.
  humanURL: https://docs.tradier.com/
  baseURL: https://api.tradier.com/v1
  tags:
  - Trading
  properties:
  - type: OpenAPI
    url: openapi/tradier-trading-api-openapi.yml
- aid: tradier:tradier-user-api
  name: Tradier User API
  description: The User API from Tradier — 1 operation(s) for user.
  humanURL: https://docs.tradier.com/
  baseURL: https://api.tradier.com/v1
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/tradier-user-api-openapi.yml
- aid: tradier:tradier-watchlists-api
  name: Tradier Watchlists API
  description: The Watchlists API from Tradier — 2 operation(s) for watchlists.
  humanURL: https://docs.tradier.com/
  baseURL: https://api.tradier.com/v1
  tags:
  - Watchlist
  tags_raw:
  - Watchlists
  properties:
  - type: OpenAPI
    url: openapi/tradier-watchlists-api-openapi.yml
common:
- type: Website
  url: https://www.tradier.com/
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/tradier/overview
- type: AgenticAccess
  url: agentic-access/tradier-agentic-access.yml
- type: Authentication
  url: authentication/tradier-authentication.yml
- type: VulnerabilityDisclosure
  url: security/tradier-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/tradier-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/tradier
- type: LinkedIn
  url: https://www.linkedin.com/company/tradier
- type: Portal
  url: https://tradier.com/
- type: Documentation
  url: https://docs.tradier.com/
- type: Pricing
  url: https://tradier.com/individuals/pricing
- type: StatusPage
  url: https://status.tradier.com/
- type: Plans
  url: plans/tradier-plans-pricing.yml
- type: RateLimits
  url: rate-limits/tradier-rate-limits.yml
- type: FinOps
  url: finops/tradier-finops.yml
- type: LlmsText
  url: https://docs.tradier.com/llms.txt
- url: https://blog.tradier.com/blog/rss.xml
  type: Blog
- type: Security
  url: https://tradier.com/legal/vulnerability-disclosure-policy
- type: APIReference
  url: https://docs.tradier.com/reference/brokerage-api-user-get-profile
- type: GettingStarted
  url: https://docs.tradier.com/docs/getting-started
- type: Support
  url: https://support.tradier.com/
- type: TermsOfService
  url: https://tradier.com/legal
- type: PrivacyPolicy
  url: https://tradier.com/legal/privacy-policy
- type: SignUp
  url: https://dash.tradier.com/sign-up
- type: MCPServer
  url: mcp/tradier-mcp.yml
- type: ToolCrosswalk
  url: mcp/tradier-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/tradier-llms.txt
- type: WellKnown
  url: well-known/tradier-well-known.yml
- type: SecurityTxt
  url: well-known/tradier-security.txt
- type: Packages
  url: packages/tradier-packages.yml
- type: SDKs
  url: packages/tradier-packages.yml
- type: OAuthScopes
  url: scopes/tradier-scopes.yml
- type: Conformance
  url: conformance/tradier-conformance.yml
- type: ErrorCatalog
  url: errors/tradier-error-codes.yml
- type: ErrorCatalog
  url: errors/tradier-problem-types.yml
- type: Lifecycle
  url: lifecycle/tradier-lifecycle.yml
- type: Sandbox
  url: sandbox/tradier-sandbox.yml
- type: Conventions
  url: conventions/tradier-conventions.yml
- type: ChangeLog
  url: changelog/tradier-changelog.yml
- type: DataModel
  url: data-model/tradier-data-model.yml
- type: Overlay
  url: overlays/tradier-brokerage-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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