Ondo Finance

Ondo Finance builds institutional-grade platforms and infrastructure to bring financial markets onchain, tokenizing real-world assets and equities. Its developer surface spans three APIs: the GM Backend API (Ondo Stocks / Global Markets) for tokenized-stock prices, market data, dividends, trading limits and mint/redeem attestations, exposed over REST plus a gRPC real-time streaming service; and the Ondo Perps REST and WebSocket APIs for perpetual-futures trading with SIWE (EIP-4361) and Web2 authentication, order management, positions, funding and live market data. Products include Ondo Stocks, USDY (yieldcoin) and OUSG (tokenized US Treasuries).

Ondo Finance publishes 3 APIs on the APIs.io network: Ondo GM Backend API (Ondo Stocks / Global Markets), Ondo Perps REST API, and Ondo Perps WebSocket API. Tagged areas include Company, Crypto, Tokenization, Real World Assets, and DeFi.

Ondo Finance’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, signup flow, authentication, and 25 more developer resources.

🌐 Visit website 📡 Source on GitHub
48.4/100 developing Agent 72/100 agent native Full breakdown ↓
scored 2026-07-21 · rubric v0.4
3 APIs 1 MCP Servers 0 Features
CompanyCryptoTokenizationReal World AssetsDeFiStocksTradingPerpetual FuturesMarket DataBlockchainFinancial Services

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-21 · rubric v0.4
Composite quality — 48.4/100 · developing
Contract Quality 9.4 / 25
Developer Ergonomics 14.8 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 7.9 / 13
Governance 0.0 / 12
Discoverability 9.5 / 10
Agent readiness — 72/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 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 7 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 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/ondo-finance: 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

Ondo GM Backend API (Ondo Stocks / Global Markets)

REST + gRPC API for tokenized-stock (Ondo Stocks) prices, market data, dividends, contract addresses, trading limits, market status and mint/redeem attestations.

Ondo Perps REST API

REST API for Ondo Perps: account, wallet, deposits/withdrawals, API keys and perpetual-futures trading (orders, TWAP, positions, funding, leverage).

Ondo Perps WebSocket API

Real-time WebSocket API for Ondo Perps: market data, order/position/balance/funding updates and a dead-man-switch, across 22 subscription channels.

MCP Servers

ondo-finance-mcp.yml

MCP SERVER

Rate Limits

Ondo Finance Rate Limits

2 limits

RATE LIMITS

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Sandbox
Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog
ErrorCatalog
 Conventions
Conventions
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security

Operate 4

Status, limits, changes, and where to get help

Support
Support
 RateLimits
RateLimits
 Deprecation
Deprecation
 ChangeLog
ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 4

Properties that don't map to a standard resource type

Protobuf
Protobuf
 Overlay
Overlay
 Overlay
Overlay
 Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: ondo-finance
name: Ondo Finance
description: 'Ondo Finance builds institutional-grade platforms and infrastructure to bring financial markets onchain, tokenizing
  real-world assets and equities. Its developer surface spans three APIs: the GM Backend API (Ondo Stocks / Global Markets)
  for tokenized-stock prices, market data, dividends, trading limits and mint/redeem attestations, exposed over REST plus
  a gRPC real-time streaming service; and the Ondo Perps REST and WebSocket APIs for perpetual-futures trading with SIWE (EIP-4361)
  and Web2 authentication, order management, positions, funding and live market data. Products include Ondo Stocks, USDY (yieldcoin)
  and OUSG (tokenized US Treasuries).'
url: https://raw.githubusercontent.com/api-evangelist/ondo-finance/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- pantera-capital
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Crypto
- Tokenization
- Real World Assets
- DeFi
- Stocks
- Trading
- Perpetual Futures
- Market Data
- Blockchain
- Financial Services
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: Ondo GM Backend API (Ondo Stocks / Global Markets)
  description: REST + gRPC API for tokenized-stock (Ondo Stocks) prices, market data, dividends, contract addresses, trading
    limits, market status and mint/redeem attestations.
  humanURL: https://docs.ondo.finance/api-reference/overview
  baseURL: https://api.gm.ondo.finance
  properties:
  - type: OpenAPI
    url: openapi/ondo-finance-gm-openapi-original.json
  - type: Protobuf
    url: grpc/ondo-finance-gm-backend.proto
  - type: Quickstart
    url: https://docs.ondo.finance/api-reference/quickstart
  - type: ErrorCatalog
    url: errors/ondo-finance-error-codes.yml
- name: Ondo Perps REST API
  description: 'REST API for Ondo Perps: account, wallet, deposits/withdrawals, API keys and perpetual-futures trading (orders,
    TWAP, positions, funding, leverage).'
  humanURL: https://docs.ondo.finance
  baseURL: https://api.ondoperps.xyz
  properties:
  - type: OpenAPI
    url: openapi/ondo-finance-perps-openapi-original.json
- name: Ondo Perps WebSocket API
  description: 'Real-time WebSocket API for Ondo Perps: market data, order/position/balance/funding updates and a dead-man-switch,
    across 22 subscription channels.'
  humanURL: https://docs.ondo.finance
  baseURL: wss://api.ondoperps.xyz
  properties:
  - type: OpenAPI
    url: openapi/ondo-finance-perps-ws-openapi-original.json
  - type: Webhooks
    url: openapi/ondo-finance-perps-ws-openapi-original.json
common:
- type: Website
  url: https://ondo.finance/
- type: DeveloperPortal
  url: https://docs.ondo.finance
- type: Documentation
  url: https://docs.ondo.finance/api-reference/overview
- type: APIReference
  url: https://docs.ondo.finance/api-reference/overview
- type: GettingStarted
  url: https://docs.ondo.finance/api-reference/quickstart
- type: GitHubOrganization
  url: https://github.com/ondoprotocol
- type: Blog
  url: https://www.ondo.finance/insights
- type: Support
  url: https://ondo.finance/contact
- type: SignUp
  url: https://app.ondo.finance
- type: TermsOfService
  url: https://docs.ondo.finance/legal/terms-of-service
- type: PrivacyPolicy
  url: https://docs.ondo.finance/legal/privacy-policy
- type: Authentication
  url: authentication/ondo-finance-authentication.yml
- type: AgenticAccess
  url: agentic-access/ondo-finance-agentic-access.yml
- type: DomainSecurity
  url: security/ondo-finance-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/ondo-finance-vulnerability-disclosure.yml
- type: Security
  url: https://immunefi.com/bug-bounty/ondofinance/
- type: LLMsTxt
  url: llms/ondo-finance-llms.txt
- type: ErrorCatalog
  url: errors/ondo-finance-error-codes.yml
- type: Conventions
  url: conventions/ondo-finance-conventions.yml
- type: Sandbox
  url: sandbox/ondo-finance-sandbox.yml
- type: RateLimits
  url: rate-limits/ondo-finance-rate-limits.yml
- type: Lifecycle
  url: lifecycle/ondo-finance-lifecycle.yml
- type: Deprecation
  url: https://docs.ondo.finance/api-reference/upcoming-changes
- type: ChangeLog
  url: changelog/ondo-finance-changelog.yml
- type: Conformance
  url: conformance/ondo-finance-conformance.yml
- type: MCPServer
  url: mcp/ondo-finance-mcp.yml
- type: DataModel
  url: data-model/ondo-finance-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Protobuf
  url: grpc/ondo-finance-gm-backend.proto
- type: Overlay
  url: overlays/ondo-finance-gm-overlay.yaml
- type: Overlay
  url: overlays/ondo-finance-perps-overlay.yaml
- type: Overlay
  url: overlays/ondo-finance-perps-ws-overlay.yaml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 22
  pass: local-v1