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.

12.4/100 emerging ▬ flat Agent 3/100 human only Front door AI 1/6 silent Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
AccessFreemium
3 APIs
AdvertisingDigital MarketingIn-App AdvertisingMobileProgrammaticReal-Time BiddingUser Acquisition

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
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/. 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/sync-api: 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 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.

Rate Limits 1

Documented rate limits and quota policies.

Sync Api Rate Limits

0 limits

RATE LIMITS

FinOps 1

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

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

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Access & Security 1

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Company 1

The organization behind the API

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.
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  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://sync-api.com/favicon.ico
tags:
- Advertising
- Digital Marketing
- In-App Advertising
- Mobile
- Programmatic
- Real-Time Bidding
- User Acquisition
type: Index
position: Consuming
access: 3rd-Party
created: '2026-05-03'
modified: '2026-08-12'
url: https://raw.githubusercontent.com/api-evangelist/sync-api/refs/heads/main/apis.yml
specificationVersion: '0.23'
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/
  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/
  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/
  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: LLMsTxt
  url: llms/sync-api-llms.txt
- type: Website
  url: https://sync-api.com
- type: Contact
  url: mailto:support@sync-api.com
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-12'
  status: minimal
  artifacts_added: 2
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: 'Sync API markets itself as an "Enterprise API for the In-App advertising ecosystem" but ships no developer surface
    at all: the site is a five-page WordPress brochure with no docs, no reference, no signup and no SDKs, and the API host
    it advertised, api.sync-api.com, is authoritative NXDOMAIN on 8.8.8.8, 1.1.1.1 and 9.9.9.9 — so the placeholder baseURL
    was removed from this file. Every spec and /.well-known/ path returns the WordPress 404 template; the only machine-readable
    surface on the domain is the marketing site''s own WordPress REST API (/wp-json/, 268 CMS routes) and an auth-gated (401)
    WordPress MCP-adapter route, neither of which is the advertising product.'
  evidence:
  - url: https://api.sync-api.com
    status: 0
  - url: https://sync-api.com/openapi.json
    status: 404
  - url: https://sync-api.com/.well-known/agent-card.json
    status: 404
  - url: https://sync-api.com/docs
    status: 404
  - url: https://sync-api.com/wp-json/mcp/mcp-adapter-default-server
    status: 401
  - url: https://sync-api.com/
    status: 200
  checked: '2026-08-12'

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