SponsorUnited

SponsorUnited is a sports and entertainment sponsorship intelligence platform, founded in 2018 and headquartered in Stamford, Connecticut. Its B2B SaaS product gives brands, rights holders (teams, leagues, venues and events), agencies and media companies a searchable dataset of marketing partnerships — the company reports 403,000+ brands, 2.2M+ tracked deals and 21.1M+ data points across sports, entertainment, media and talent — used to discover, evaluate, price, negotiate and activate sponsorships. The platform (SponsorUnited 4.0) layers AI features on that dataset, including the Surface AI analyst, a Proposal Evaluator, and SPND (Sponsorship Price of Negotiated Deals), a pricing-transparency product built on verified deal data. SponsorUnited runs a production REST API at api.sponsorunited.com whose OpenAPI 3.0 description is publicly served, but it publishes no developer portal, API reference or partner program around it; access is sold as a paid subscription with custom pricing and no self-serve sign-up.

SponsorUnited publishes 1 API on the APIs.io network. Tagged areas include Company, Sponsorship, Sports, Entertainment, and Marketing.

The SponsorUnited catalog on APIs.io includes 1 event-driven AsyncAPI specification.

SponsorUnited’s developer surface includes documentation, support, signup flow, changelog, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
46.8/100 developing ▬ flat Agent 38/100 agent ready Full breakdown ↓
scored 2026-09-01 · rubric v0.17.2
1 APIs 1 MCP Servers
CompanySponsorshipSportsEntertainmentMarketingAdvertisingMediaDataAnalyticsMarket IntelligenceSoftware-as-a-ServicePartnerships

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-01 · rubric v0.17.2
Composite quality — 46.8/100 · developing
Contract Quality 14.6 / 25
Developer Ergonomics 6.7 / 20
Access Clarity 10.0 / 20
Operational Transparency 5.8 / 13
Contract Governance 2.2 / 12
Discoverability 7.6 / 10
Agent readiness — 38/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 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 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 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Surface 0 / 5
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/sponsorunited: 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 1

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

SponsorUnited API

The production REST API behind the SponsorUnited platform. Its OpenAPI 3.0 description is publicly served at https://api.sponsorunited.com/docs and describes 547 operations acro...

MCP Servers 1

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

SponsorUnited MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Sponsorunited Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sponsorunited Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

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

Sponsorunited Event Surface

ASYNCAPI

Security Posture 3

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

Sponsorunited Authentication

apiKey/http · 2 schemes

SECURITY

Sponsorunited Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Sponsorunited Trust Center

SOC 2 Type II, GDPR

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp
SignUp
 Login
Login

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle
Lifecycle
 Conformance
Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages

Access & Security 4

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 Compliance
Compliance
 Security
Security
 DomainSecurity
DomainSecurity

Operate 4

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 ChangeLog
ChangeLog
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy
 Plans
Plans

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: sponsorunited
name: SponsorUnited
description: SponsorUnited is a sports and entertainment sponsorship intelligence platform, founded in 2018 and headquartered
  in Stamford, Connecticut. Its B2B SaaS product gives brands, rights holders (teams, leagues, venues and events), agencies
  and media companies a searchable dataset of marketing partnerships — the company reports 403,000+ brands, 2.2M+ tracked
  deals and 21.1M+ data points across sports, entertainment, media and talent — used to discover, evaluate, price, negotiate
  and activate sponsorships. The platform (SponsorUnited 4.0) layers AI features on that dataset, including the Surface AI
  analyst, a Proposal Evaluator, and SPND (Sponsorship Price of Negotiated Deals), a pricing-transparency product built on
  verified deal data. SponsorUnited runs a production REST API at api.sponsorunited.com whose OpenAPI 3.0 description is publicly
  served, but it publishes no developer portal, API reference or partner program around it; access is sold as a paid subscription
  with custom pricing and no self-serve sign-up.
url: https://raw.githubusercontent.com/api-evangelist/sponsorunited/refs/heads/main/apis.yml
image: https://cdn.prod.website-files.com/69150d2cbcfa91eb0672f267/691cc16ce42d7f8320d6e4d0_SU-logotype-light.svg
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-29'
modified: '2026-08-29'
tags:
- Company
- Sponsorship
- Sports
- Entertainment
- Marketing
- Advertising
- Media
- Data
- Analytics
- Market Intelligence
- Software-as-a-Service
- Partnerships
tags_raw:
- Company
- Sponsorship
- Sports
- Entertainment
- Marketing
- Advertising
- Media
- Data
- Analytics
- Market Intelligence
- SaaS
- Partnerships
apis:
- name: SponsorUnited API
  description: The production REST API behind the SponsorUnited platform. Its OpenAPI 3.0 description is publicly served at
    https://api.sponsorunited.com/docs and describes 547 operations across 422 paths and 561 schemas, covering brands, properties,
    leagues, agencies, events, contacts, deals and spend tracking, saved and custom reports, scouting audits, social scraping,
    news, user and organization management, and the Surface AI assistant. Authentication is a bearer JWT for platform users
    plus an X-API-Key service key for internal services. SponsorUnited publishes no developer documentation, reference site
    or sign-up path for this API.
  humanURL: https://www.sponsorunited.com/platform
  baseURL: https://api.sponsorunited.com
  tags:
  - Sponsorship
  - Sports
  - Marketing
  - Data
  - Analytics
  properties:
  - type: OpenAPI
    url: openapi/sponsorunited-api-openapi.json
  - type: Authentication
    url: authentication/sponsorunited-authentication.yml
  - type: ErrorCatalog
    url: errors/sponsorunited-problem-types.yml
  - type: Conventions
    url: conventions/sponsorunited-conventions.yml
  - type: DataModel
    url: data-model/sponsorunited-data-model.yml
  - type: Overlay
    url: overlays/sponsorunited-api-overlay.yaml
  - type: MCPServer
    url: mcp/sponsorunited-mcp.yml
  - type: AgentSkill
    url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.sponsorunited.com/
- type: Documentation
  url: https://help.sponsorunited.com/en/
- type: Support
  url: https://www.sponsorunited.com/contact
- type: SignUp
  url: https://www.sponsorunited.com/request-a-demo
- type: Login
  url: https://pro.sponsorunited.com/
- type: TermsOfService
  url: https://www.sponsorunited.com/legal/terms-of-service
- type: PrivacyPolicy
  url: https://www.sponsorunited.com/legal/privacy
- type: StatusPage
  url: https://sponsorunited.statuspage.io/
- type: TrustCenter
  url: security/sponsorunited-trust-center.yml
- type: Compliance
  url: https://www.sponsorunited.com/security
- type: Security
  url: https://www.sponsorunited.com/security
- type: GitHubOrganization
  url: https://github.com/SponsorUnited
- type: ChangeLog
  url: https://help.sponsorunited.com/en/collections/7168679-data-product-releases
- type: LLMsTxt
  url: llms/sponsorunited-llms.txt
- type: Lifecycle
  url: lifecycle/sponsorunited-lifecycle.yml
- type: Conformance
  url: conformance/sponsorunited-conformance.yml
- type: DomainSecurity
  url: security/sponsorunited-domain-security.yml
- type: Plans
  url: plans/sponsorunited-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sponsorunited-rate-limits.yml
- type: Packages
  url: packages/sponsorunited-packages.yml
x-enrichment:
  date: '2026-08-29'
  status: enriched
  artifacts_added: 23
  pass: local-v1

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