Orthogonal

Orthogonal is a unified API and payment layer for AI agents, backed by Pantera Capital and Y Combinator. An agent describes what it needs in natural language and Orthogonal returns the right service from a catalog of 40+ third-party APIs (web search, data enrichment, scraping, email finding/verification, identity), then proxies the call and meters a per-call price. Access is available through a REST API (api.orthogonal.com), a TypeScript SDK (@orth/sdk), a Python SDK (orth), a CLI (@orth/cli), and an official hosted MCP server (mcp.orthogonal.com) for Claude, Cursor, and other agents. Billing is prepaid credits or pay-per-call stablecoin micropayments over x402 (USDC on Base) and MPP (USDC.e on Tempo). Orthogonal also publishes an open library of 88 installable Agent Skills.

Orthogonal publishes 4 APIs on the APIs.io network, including Account API, Discovery API, Run API, and 1 more. Tagged areas include Company, AI Agents, API Discovery, API Marketplace, and Agent Payments.

Orthogonal’s developer surface includes documentation, API reference, getting-started guide, pricing, signup flow, CLI, authentication, and 32 more developer resources.

🌐 Visit website 📡 Source on GitHub

50.9/100 developing ▲ 8.5 Agent 55/100 agent ready Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0

AccessSelf serve

4 APIs 1 MCP Servers

CompanyAI AgentsAPI DiscoveryAPI MarketplaceAgent PaymentsMCPData EnrichmentCryptoStablecoins

Kin Score

Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0

Composite quality — 50.9/100 · developing

Contract Quality 3.1 / 21

Developer Ergonomics 14.0 / 17

Commercial Clarity 12.5 / 17

Operational Transparency 3.5 / 11

Governance 1.2 / 10

Discoverability 6.9 / 9

Regulatory Posture 9.6 / 15

Agent readiness — 55/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

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

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Regulatory Posture applies to this provider. Its tags matched the Payments 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/orthogonal: 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 4

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

MCP Servers 1

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

Rate Limits 1

Documented rate limits and quota policies.

Orthogonal Rate Limits

0 limits

RATE LIMITS

FinOps 1

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

Scopes 1

OAuth scopes governing access to this provider's APIs.

Orthogonal Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 4

Portal, sign-up, and the first successful call

GettingStarted

SignUp

Sandbox

DeveloperPortal

Documentation 4

Reference material describing how the API behaves

Documentation

APIReference

OpenAPI

OpenAPI

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

LLMsTxt

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Conformance

Lifecycle

DataModel

Build 5

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

ToolCrosswalk

Access & Security 5

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

StatusPage

StatusPage

Commercial 5

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

FinOps

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 3

Properties that don't map to a standard resource type

Overlay

Overlay

Overlay

Overlay

AgentCard

AgentCard

Source (apis.yml)

aid: orthogonal
name: Orthogonal
description: Orthogonal is a unified API and payment layer for AI agents, backed by Pantera Capital and Y Combinator. An agent
  describes what it needs in natural language and Orthogonal returns the right service from a catalog of 40+ third-party APIs
  (web search, data enrichment, scraping, email finding/verification, identity), then proxies the call and meters a per-call
  price. Access is available through a REST API (api.orthogonal.com), a TypeScript SDK (@orth/sdk), a Python SDK (orth), a
  CLI (@orth/cli), and an official hosted MCP server (mcp.orthogonal.com) for Claude, Cursor, and other agents. Billing is
  prepaid credits or pay-per-call stablecoin micropayments over x402 (USDC on Base) and MPP (USDC.e on Tempo). Orthogonal
  also publishes an open library of 88 installable Agent Skills.
url: https://raw.githubusercontent.com/api-evangelist/orthogonal/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- pantera-capital
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://orthogonal.sh/logo.jpg
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-08-14'
tags:
- Company
- AI Agents
- API Discovery
- API Marketplace
- Agent Payments
- MCP
- Data Enrichment
- Crypto
- Stablecoins
apis:
- aid: orthogonal:orthogonal-account-api
  name: Orthogonal Account API
  description: Credit balance, usage, and transaction history.
  humanURL: https://docs.orthogonal.com/api-reference/introduction
  baseURL: https://api.orthogonal.com/v1
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/orthogonal-account-api-openapi.yml
  - type: Documentation
    url: https://docs.orthogonal.com/
  - type: APIReference
    url: https://docs.orthogonal.com/api-reference/introduction
  - type: Quickstart
    url: https://docs.orthogonal.com/quickstart
- aid: orthogonal:orthogonal-discovery-api
  name: Orthogonal Discovery API
  description: Find APIs and endpoints, inspect parameters, and get code snippets.
  humanURL: https://docs.orthogonal.com/api-reference/introduction
  baseURL: https://api.orthogonal.com/v1
  tags:
  - Discovery
  properties:
  - type: OpenAPI
    url: openapi/orthogonal-discovery-api-openapi.yml
  - type: Documentation
    url: https://docs.orthogonal.com/
  - type: APIReference
    url: https://docs.orthogonal.com/api-reference/introduction
  - type: Quickstart
    url: https://docs.orthogonal.com/quickstart
- aid: orthogonal:orthogonal-run-api
  name: Orthogonal Run API
  description: Execute a call against any catalog API through Orthogonal.
  humanURL: https://docs.orthogonal.com/api-reference/introduction
  baseURL: https://api.orthogonal.com/v1
  tags:
  - Run
  properties:
  - type: OpenAPI
    url: openapi/orthogonal-run-api-openapi.yml
  - type: Documentation
    url: https://docs.orthogonal.com/
  - type: APIReference
    url: https://docs.orthogonal.com/api-reference/introduction
  - type: Quickstart
    url: https://docs.orthogonal.com/quickstart
- aid: orthogonal:orthogonal-marketplace-api
  name: Orthogonal API Marketplace
  description: 'The resold catalog itself — 795 payable operations across 58 third-party provider families (scraping, enrichment,
    search, jobs, weather, agent infrastructure), each namespaced /{provider-slug}/{upstream-path} and each carrying its own
    fixed USD price in-band. Reachable three ways: as arguments to POST /v1/run on the control plane, or directly against
    one of three stablecoin payment rails that answer HTTP 402 and settle before the call runs.'
  humanURL: https://www.orthogonal.com/discover
  baseURL: https://mpp.orthogonal.com
  tags:
  - Marketplace
  - Payments
  - x402
  properties:
  - type: OpenAPI
    url: openapi/_original/orthogonal-marketplace-openapi.json
  - type: Overlay
    url: overlays/orthogonal-marketplace-overlay.yaml
  - type: Plans
    url: plans/orthogonal-plans-pricing.yml
  - type: FinOps
    url: finops/orthogonal-finops.yml
  - type: Documentation
    url: https://docs.orthogonal.com/payments
  - type: APIReference
    url: https://api.orthogonal.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.orthogonal.com/
- type: Documentation
  url: https://docs.orthogonal.com/
- type: APIReference
  url: https://docs.orthogonal.com/api-reference/introduction
- type: GettingStarted
  url: https://docs.orthogonal.com/quickstart
- type: Pricing
  url: https://www.orthogonal.com/pricing
- type: SignUp
  url: https://orthogonal.com/dashboard
- type: TermsOfService
  url: https://www.orthogonal.com/terms
- type: PrivacyPolicy
  url: https://www.orthogonal.com/privacy
- type: GitHubOrganization
  url: https://github.com/orthogonal-sh
- type: OpenAPI
  url: openapi/_original/orthogonal-openapi.yaml
- type: Overlay
  url: overlays/orthogonal-openapi-overlay.yaml
- type: Packages
  url: packages/orthogonal-packages.yml
- type: SDKs
  url: packages/orthogonal-packages.yml
- type: CLI
  url: cli/orthogonal-cli.yml
- type: MCPServer
  url: mcp/orthogonal-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/orthogonal-llms.txt
- type: WellKnown
  url: well-known/orthogonal-well-known.yml
- type: Authentication
  url: authentication/orthogonal-authentication.yml
- type: OAuthScopes
  url: scopes/orthogonal-scopes.yml
- type: Conventions
  url: conventions/orthogonal-conventions.yml
- type: ErrorCatalog
  url: errors/orthogonal-problem-types.yml
- type: Conformance
  url: conformance/orthogonal-conformance.yml
- type: Lifecycle
  url: lifecycle/orthogonal-lifecycle.yml
- type: Sandbox
  url: sandbox/orthogonal-sandbox.yml
- type: DataModel
  url: data-model/orthogonal-data-model.yml
- type: DomainSecurity
  url: security/orthogonal-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/orthogonal-vulnerability-disclosure.yml
- type: Security
  url: security/orthogonal-vulnerability-disclosure.yml
- type: OpenAPI
  url: openapi/_original/orthogonal-marketplace-openapi.json
- type: Overlay
  url: overlays/orthogonal-marketplace-overlay.yaml
- type: AgentCard
  url: a2a/orthogonal-a2a.yml
- type: ToolCrosswalk
  url: mcp/orthogonal-tool-crosswalk.yml
- type: Plans
  url: plans/orthogonal-plans-pricing.yml
- type: RateLimits
  url: rate-limits/orthogonal-rate-limits.yml
- type: FinOps
  url: finops/orthogonal-finops.yml
- type: StatusPage
  url: https://status.orthogonal.com/
- type: Blog
  url: https://www.orthogonal.com/blog
- type: DeveloperPortal
  url: https://docs.orthogonal.com/
x-enrichment:
  date: '2026-08-14'
  status: enriched
  artifacts_added: 11
  pass: local-v1

Orthogonal

Kin Score

APIs 4

Orthogonal Account API

Orthogonal Discovery API

Orthogonal Run API

Orthogonal API Marketplace

Open Collections 4

API Collection

Orthogonal Account API

Orthogonal Account Discovery API

Orthogonal Account Run API

MCP Servers 1

orthogonal-mcp.yml

Pricing Plans 1

Orthogonal Plans Pricing