Sync API website screenshot

Sync API

Sync API is an enterprise API platform for the in-app mobile advertising ecosystem, delivering performance, transparency, and control for marketers. The platform provides a bidder platform and suite of APIs for user acquisition, mobile user growth, and user re-engagement. It enables data-driven, ROI-focused mobile advertising across 1.2 billion global audiences in 50+ countries, with 500+ robust API integrations and advanced algorithms for LTV forecasting and in-app event conversion tracking.

Sync API publishes 3 APIs on the APIs.io network. Tagged areas include Advertising, Digital Marketing, In-App Advertising, Mobile, and Programmatic.

The Sync API catalog on APIs.io includes 1 JSON-LD context.

🌐 Visit website 📡 Source on GitHub
22.6/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
3 APIs
AdvertisingDigital MarketingIn-App AdvertisingMobileProgrammaticReal-Time BiddingUser Acquisition

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 22.6/100 · emerging
Contract Quality 3.2 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
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/sync-api: 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 3

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

Sync API Platform

The Sync API bidder platform provides enterprise-grade APIs for the in-app advertising ecosystem. The platform supports real-time bidding (RTB), user acquisition optimization, L...

Sync API User Acquisition

User acquisition API leveraging advanced algorithms to optimize user acquisition strategies for mobile apps. Provides targeting across 1.2B+ global audiences with LTV forecastin...

Sync API User Re-Engagement

Re-engagement API that analyzes behavioral data to identify relevant content for target audiences, enabling advertisers to re-engage lapsed users through personalized in-app adv...

Pricing Plans 1

Published pricing tiers and plan structures.

Sync Api Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sync Api Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Sync Api Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Sync Api Context

0 classes · 25 properties

JSON-LD

Security Posture 1

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

Sync Api Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Contact
Contact

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: sync-api
name: Sync API
description: Sync API is an enterprise API platform for the in-app mobile advertising ecosystem, delivering performance, transparency,
  and control for marketers. The platform provides a bidder platform and suite of APIs for user acquisition, mobile user growth,
  and user re-engagement. It enables data-driven, ROI-focused mobile advertising across 1.2 billion global audiences in 50+
  countries, with 500+ robust API integrations and advanced algorithms for LTV forecasting and in-app event conversion tracking.
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://sync-api.com/favicon.ico
tags:
- Advertising
- Digital Marketing
- In-App Advertising
- Mobile
- Programmatic
- Real-Time Bidding
- User Acquisition
type: Index
position: Consumer
access: 3rd-Party
created: '2026-05-03'
modified: '2026-05-03'
url: https://raw.githubusercontent.com/api-evangelist/sync-api/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: sync-api:sync-api-platform
  name: Sync API Platform
  description: The Sync API bidder platform provides enterprise-grade APIs for the in-app advertising ecosystem. The platform
    supports real-time bidding (RTB), user acquisition optimization, LTV (Lifetime Value) forecasting, behavioral analysis
    for re-engagement targeting, and cross-channel campaign management. Accessed by programmatic advertisers, DSPs, and mobile
    marketing teams.
  humanURL: https://sync-api.com/
  baseURL: https://api.sync-api.com
  tags:
  - Advertising
  - Behavioral Analysis
  - Bidding
  - Campaign Management
  - LTV
  - Mobile
  - Programmatic
  - Real-Time Bidding
  - User Acquisition
  properties:
  - type: Documentation
    url: https://sync-api.com/
  - type: Website
    url: https://sync-api.com/
- aid: sync-api:sync-api-user-acquisition
  name: Sync API User Acquisition
  description: User acquisition API leveraging advanced algorithms to optimize user acquisition strategies for mobile apps.
    Provides targeting across 1.2B+ global audiences with LTV forecasting and in-app event conversion tracking across 50+
    countries.
  humanURL: https://sync-api.com/
  baseURL: https://api.sync-api.com
  tags:
  - Advertising
  - Attribution
  - Conversion
  - LTV
  - Mobile
  - User Acquisition
  properties:
  - type: Documentation
    url: https://sync-api.com/
  - type: Website
    url: https://sync-api.com/
- aid: sync-api:sync-api-re-engagement
  name: Sync API User Re-Engagement
  description: Re-engagement API that analyzes behavioral data to identify relevant content for target audiences, enabling
    advertisers to re-engage lapsed users through personalized in-app advertising campaigns.
  humanURL: https://sync-api.com/
  baseURL: https://api.sync-api.com
  tags:
  - Advertising
  - Behavioral Analysis
  - Mobile
  - Personalization
  - Re-Engagement
  - Retargeting
  properties:
  - type: Documentation
    url: https://sync-api.com/
  - type: Website
    url: https://sync-api.com/
common:
- type: DomainSecurity
  url: security/sync-api-domain-security.yml
- type: Website
  url: https://sync-api.com
- type: Contact
  url: mailto:support@sync-api.com
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com