Sync Labs

Sync Labs (sync.so) provides a suite of studio-grade AI lip-sync and visual dubbing APIs. Their technology synchronizes video lip movements with any audio track using state-of-the-art models, enabling professional video dubbing, content localization, and personalized video generation at scale. Models include sync-3, lipsync-2-pro, lipsync-2, lipsync-1.9, and react-1, with support for batch processing (up to 500 videos), webhooks, Python and TypeScript SDKs, Adobe Premiere plugin, and ComfyUI integration. Backed by Y Combinator.

Sync Labs publishes 6 API contracts indexed on the APIs.io network, including Assets API, Batch API, Generate API, and 3 more. Tagged areas include Artificial Intelligence, Content Localization, Dubbing, Lip Sync, and Media.

The Sync Labs catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Sync Labs’ developer surface includes authentication, documentation, getting-started guide, pricing, signup flow, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.6/100 thin ▬ flat Agent 44/100 agent ready Front door AI 3/6 light Heartbeat 78/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessPaid

1 published contract 1 MCP Servers

Artificial IntelligenceContent LocalizationDubbing Lip Sync Media Video Visual AI

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Content Origination & Production Management

BC-3700

BatchGenerate

POST /generate POST /batch

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 34.6/100 · thin

Contract Quality 10.5 / 19

Developer Ergonomics 5.4 / 15

Access Clarity 3.8 / 15

Operational Transparency 1.2 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 44/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 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

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too Ask about this →

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 25.5 — up to +14.9 composite points Ask about this →
Developer Ergonomics scores 35.7 — up to +12.9 composite points Ask about this →
Operational Transparency scores 11.9 — up to +11.5 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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 the provider profile at artifacts.apis.io/sync-labs/apis.yml: open an issue on github.com/api-evangelist/sync-labs to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Film & Media Identifiers (EIDR, ISAN, MovieLabs, DPP)	builds-on	17.2 (thin)	-	-
ONVIF Video Analytics (video surveillance, edge cameras, computer vision)	builds-on	17.2 (thin)	-	-
Adobe Exchange (publishers of Creative Cloud, Experience Cloud and Document Cloud integrations)	builds-on	17.2 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 4

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 6

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

Sync Labs Python SDK

Official Python SDK for integrating the Sync Labs lip-sync API into Python applications. Supports Python 3.8+. Install via pip install syncsdk.

Sync Labs TypeScript SDK

Official TypeScript/Node.js SDK for integrating the Sync Labs API. Supports Node.js 18+. Install via npm install @sync.so/sdk.

Sync Labs Assets API

Uploaded asset management

Sync Labs Batch API

Batch processing multiple videos

Sync Labs Generate API

Lip-sync video generation operations

Sync Labs Models API

Available AI model listing

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Sync Labs Assets API

OPEN COLLECTION

Sync Labs Assets Batch API

OPEN COLLECTION

Sync Labs Assets Generate API

OPEN COLLECTION

Sync Labs Assets Models API

OPEN COLLECTION

Sync Labs API

OPEN COLLECTION

MCP Servers 1

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

Sync Labs MCP Server

Remote MCP server at mcp.sync.so over HTTP.

MCP SERVER

Sync Labs API pricing

Not yet checked against Sync Labs's own pricing page. Compiled by API Evangelist on 2026-05-05 from sync.so/pricing; confirm before you rely on a figure.

Plan	Price
Hobbyist subscription	—
Creator subscription	—
Growth subscription	—
Scale subscription	—
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Generation Endpoint Rate Limit: 60 requests per minute
Other Endpoints Rate Limit: 600 requests per minute
Concurrent Generations - Hobbyist: 1 concurrent requests

Compiled by API Evangelist, not yet checked against Sync Labs's documentation. All 7 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Sync Labs Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sync Labs Rate Limits

7 limits

RATE LIMITS

FinOps 1

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

Sync Labs Finops

FINOPS

Semantic Vocabularies 1

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

Sync Labs Context

0 classes · 22 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Sync Labs — jsonschema rules

5 rules · 4 warn-severity 1 info-severity

SPECTRAL

Sync Labs API Rules

8 rules · 1 error-severity 5 warn-severity 1 info-severity

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Sync Labs Generation

9 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Sync Labs Generation Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Sync Labs Create Generation Example

6 fields

EXAMPLE

Security Posture 2

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

Sync Labs Authentication

apiKey · 1 scheme

SECURITY

Sync Labs Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

Sync Labs Agentic Access

10 operations · 2 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Signup

Signup

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

API Keys

API Keys

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Contact

Contact

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Pricing

Pricing

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Y Combinator

Y Combinator

Source (apis.yml)

aid: sync-labs
name: Sync Labs
description: Sync Labs (sync.so) provides a suite of studio-grade AI lip-sync and visual dubbing APIs. Their technology synchronizes
  video lip movements with any audio track using state-of-the-art models, enabling professional video dubbing, content localization,
  and personalized video generation at scale. Models include sync-3, lipsync-2-pro, lipsync-2, lipsync-1.9, and react-1, with
  support for batch processing (up to 500 videos), webhooks, Python and TypeScript SDKs, Adobe Premiere plugin, and ComfyUI
  integration. Backed by Y Combinator.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://sync.so/favicon.ico
tags:
- Artificial Intelligence
- Content Localization
- Dubbing
- Lip Sync
- Media
- Video
- Visual AI
type: Index
position: Consuming
access: 3rd-Party
created: '2026-05-03'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/sync-labs/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: sync-labs:sync-labs-python-sdk
  name: Sync Labs Python SDK
  description: Official Python SDK for integrating the Sync Labs lip-sync API into Python applications. Supports Python 3.8+.
    Install via pip install syncsdk.
  humanURL: https://sync.so/docs/introduction
  tags:
  - Python
  - SDK
  properties:
  - type: Documentation
    url: https://sync.so/docs/introduction
  - type: PyPI
    url: https://pypi.org/project/syncsdk/
- aid: sync-labs:sync-labs-typescript-sdk
  name: Sync Labs TypeScript SDK
  description: Official TypeScript/Node.js SDK for integrating the Sync Labs API. Supports Node.js 18+. Install via npm install
    @sync.so/sdk.
  humanURL: https://sync.so/docs/introduction
  tags:
  - JavaScript
  - Node.js
  - SDK
  - TypeScript
  properties:
  - type: Documentation
    url: https://sync.so/docs/introduction
  - type: NPM
    url: https://www.npmjs.com/package/@sync.so/sdk
- aid: sync-labs:sync-labs-assets-api
  name: Sync Labs Assets API
  description: Uploaded asset management
  humanURL: https://sync.so/api
  baseURL: https://api.sync.so/v2
  tags:
  - Assets
  properties:
  - type: OpenAPI
    url: openapi/sync-labs-assets-api-openapi.yml
  - type: Documentation
    url: https://sync.so/docs/introduction
  - type: Pricing
    url: https://sync.so/pricing
  - type: GettingStarted
    url: https://sync.so/docs/quickstart
- aid: sync-labs:sync-labs-batch-api
  name: Sync Labs Batch API
  description: Batch processing multiple videos
  humanURL: https://sync.so/api
  baseURL: https://api.sync.so/v2
  tags:
  - Batch
  properties:
  - type: OpenAPI
    url: openapi/sync-labs-batch-api-openapi.yml
  - type: Documentation
    url: https://sync.so/docs/introduction
  - type: Pricing
    url: https://sync.so/pricing
  - type: GettingStarted
    url: https://sync.so/docs/quickstart
- aid: sync-labs:sync-labs-generate-api
  name: Sync Labs Generate API
  description: Lip-sync video generation operations
  humanURL: https://sync.so/api
  baseURL: https://api.sync.so/v2
  tags:
  - Generate
  properties:
  - type: OpenAPI
    url: openapi/sync-labs-generate-api-openapi.yml
  - type: Documentation
    url: https://sync.so/docs/introduction
  - type: Pricing
    url: https://sync.so/pricing
  - type: GettingStarted
    url: https://sync.so/docs/quickstart
- aid: sync-labs:sync-labs-models-api
  name: Sync Labs Models API
  description: Available AI model listing
  humanURL: https://sync.so/api
  baseURL: https://api.sync.so/v2
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/sync-labs-models-api-openapi.yml
  - type: Documentation
    url: https://sync.so/docs/introduction
  - type: Pricing
    url: https://sync.so/pricing
  - type: GettingStarted
    url: https://sync.so/docs/quickstart
common:
- type: Plans
  url: plans/sync-labs-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sync-labs-rate-limits.yml
- type: FinOps
  url: finops/sync-labs-finops.yml
- type: CapabilityMap
  url: capabilities/sync-labs-capability-edges.yml
  name: Sync Labs Business Capability Map
- type: AgenticAccess
  url: agentic-access/sync-labs-agentic-access.yml
- type: DomainSecurity
  url: security/sync-labs-domain-security.yml
- type: Authentication
  url: authentication/sync-labs-authentication.yml
- type: GitHubOrganization
  url: https://github.com/synchronicity-labs
- type: LinkedIn
  url: https://www.linkedin.com/company/synclabs-ai
- type: Website
  url: https://sync.so
- type: Documentation
  url: https://sync.so/docs/introduction
- type: GettingStarted
  url: https://sync.so/docs/quickstart
- type: Pricing
  url: https://sync.so/pricing
- type: API Keys
  url: https://sync.so/settings/api-keys
- type: Signup
  url: https://sync.so/sign-up
- type: Contact
  url: mailto:hello@sync.so
- type: Y Combinator
  url: https://www.ycombinator.com/companies/sync-2
- type: LlmsText
  url: https://sync.so/llms.txt
- url: https://sync.so/blog/rss.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Sync Labs API — frequently asked questions

Does Sync Labs have an API?

Yes. APIs.io lists 6 APIs from Sync Labs, including Sync Labs Python SDK, Sync Labs TypeScript SDK and Sync Labs Assets API, and 3 more.

Is there an OpenAPI specification for the Sync Labs API?

Yes. APIs.io indexes 4 OpenAPI specifications for Sync Labs, each linked for download from this page.

How do I authenticate with the Sync Labs API?

Sync Labs documents its authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Sync Labs Authentication.

How much does the Sync Labs API cost?

APIs.io lists 5 pricing plans for Sync Labs, with each plan's price, limits and inclusions under Pricing on this page.

Does Sync Labs have an MCP server?

Yes. APIs.io lists 1 MCP server for Sync Labs: Remote MCP server at mcp.sync.so over HTTP.

Is the Sync Labs API ready for AI agents?

Sync Labs has a Kin Score of 34.6 out of 100 (thin) and an Agent Readiness score of 43.9 (agent-ready), scored by API Evangelist on 2026-11-13.

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get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
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