whatsync-app

WhatSync connects WhatsApp to ChatGPT, Claude, and other AI agents, using personal numbers or the WhatsApp Business API. It offers two connection methods—personal WhatsApp linked via device screen, and the official WhatsApp Business API with Meta‑approved templates. Users can filter chats, control data sharing, and the service respects privacy, not selling message contents. Built by Appstronauts, it integrates AI assistants to read, search, and draft replies, with optional voice note transcription on Pro plans.

whatsync-app publishes 10 API contracts indexed on the APIs.io network, including Account API, Business and pricing API, Business templates (Attio workflows) API, and 7 more. Tagged areas include WhatsApp, AI, ChatGPT, Claude, and Integration.

The whatsync-app catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

whatsync-app’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

48.8/100 developing Agent 63/100 agent native Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 Agent Skills

WhatsAppAIChatGPT Claude Integration MCP

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 48.8/100 · developing

Contract Quality 13.1 / 21

Developer Ergonomics 8.8 / 17

Access Clarity 8.9 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 5.5 / 15

Agent readiness — 63/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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

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/.

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

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter

1 more unmet check in the Agent Readiness table above.

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

Operational Transparency scores 0.0 — up to +13.0 composite points
Developer Ergonomics scores 51.7 — up to +9.7 composite points
Contract Quality scores 61.8 — up to +9.6 composite points

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.

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/whatsync-app/apis.yml: open an issue on github.com/api-evangelist/whatsync-app 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 →

APIs 10

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

whatsync-app Account API

The Account API from whatsync-app — 2 operation(s) for account.

whatsync-app Business and pricing API

The Business and pricing API from whatsync-app — 14 operation(s) for business and pricing.

whatsync-app Business templates (Attio workflows) API

List approved Meta WhatsApp templates and send one from an Attio workflow with a workspace service API key.

whatsync-app Campaigns API

The Campaigns API from whatsync-app — 10 operation(s) for campaigns.

whatsync-app Forms API

The Forms API from whatsync-app — 6 operation(s) for forms.

whatsync-app Groups API

The Groups API from whatsync-app — 15 operation(s) for groups.

whatsync-app Reading and account API

The Reading and account API from whatsync-app — 11 operation(s) for reading and account.

whatsync-app Saving and filters API

The Saving and filters API from whatsync-app — 6 operation(s) for saving and filters.

whatsync-app Sending and message actions API

The Sending and message actions API from whatsync-app — 16 operation(s) for sending and message actions.

whatsync-app Webhooks API

The Webhooks API from whatsync-app — 7 operation(s) for webhooks.

Scroll for all 10

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

send-message

AGENT SKILL

Semantic Vocabularies 1

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

Whatsync App Context

4 classes · 14 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

whatsync-app API Rules

18 rules · 13 errors 4 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Whatsync App Openapi Overlay

0 actions · update

UNRECORDED

JSON Schema 1

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

SendTemplateRequest

5 properties

JSON SCHEMA

Security Posture 2

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

Whatsync App Authentication

0 schemes

SECURITY

Whatsync App Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Whatsync App Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Whatsync App Agentic Access

91 operations · 53 acting · 2 human-in-the-loop

91 operations · 53 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Login

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Access & Security 2

Authentication, authorization, and security posture

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: whatsync-app
name: whatsync-app
description: WhatSync connects WhatsApp to ChatGPT, Claude, and other AI agents, using personal numbers or the WhatsApp Business
  API. It offers two connection methods—personal WhatsApp linked via device screen, and the official WhatsApp Business API
  with Meta‑approved templates. Users can filter chats, control data sharing, and the service respects privacy, not selling
  message contents. Built by Appstronauts, it integrates AI assistants to read, search, and draft replies, with optional voice
  note transcription on Pro plans.
url: https://artifacts.apis.io/whatsync-app/apis.yml
image: https://whatsync.app/opengraph-image?84b113d7734fa0d6
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- WhatsApp
- AI
- ChatGPT
- Claude
- Integration
- MCP
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/whatsync-app-agentic-access.yml
- type: Spectral
  url: rules/whatsync-app-rules.yml
- type: JSONLD
  url: json-ld/whatsync-app-context.jsonld
- type: Vocabulary
  url: vocabulary/whatsync-app-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/whatsync-app-data-model.yml
- type: ErrorCatalog
  url: errors/whatsync-app-problem-types.yml
- type: Conformance
  url: conformance/whatsync-app-conformance.yml
- type: WellKnown
  url: well-known/whatsync-app-well-known.yml
- type: Hosts
  url: hosts/whatsync-app-hosts.yml
- type: Vendors
  url: vendors/whatsync-app-vendors.yml
- type: TrustCenter
  url: https://whatsync.app/trust
- type: TermsOfService
  url: https://whatsync.app/terms-and-conditions
- type: PrivacyPolicy
  url: https://whatsync.app/privacy-policy
- type: Login
  url: https://whatsync.app/login
- type: DeveloperPortal
  url: https://whatsync.app/developers
- type: DomainSecurity
  url: security/whatsync-app-domain-security.yml
- type: Website
  url: https://whatsync.app/
- type: Documentation
  url: https://whatsync.app/docs
- type: APIReference
  url: https://whatsync.app/openapi.json
- type: GettingStarted
  url: https://whatsync.app/attio/whatsapp-link-with-qrcode
- type: Support
  url: https://whatsync.app/contact
- type: Blog
  url: https://whatsync.app/blog
- type: Pricing
  url: https://whatsync.app/pricing
apis:
- aid: whatsync-app:whatsync-app-account-api
  name: whatsync-app Account API
  description: The Account API from whatsync-app — 2 operation(s) for account.
  humanURL: https://whatsync.app/docs/api/tools
  baseURL: https://whatsync.app
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/whatsync-app-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/whatsync-app-send-template-request-schema.json
- aid: whatsync-app:whatsync-app-business-and-pricing-api
  name: whatsync-app Business and pricing API
  description: The Business and pricing API from whatsync-app — 14 operation(s) for business and pricing.
  humanURL: https://whatsync.app/docs/api/tools
  baseURL: https://whatsync.app
  tags:
  - Business and pricing
  properties:
  - type: OpenAPI
    url: openapi/whatsync-app-business-and-pricing-api-openapi.yml
  - type: JSONSchema
    url: json-schema/whatsync-app-send-template-request-schema.json
- aid: whatsync-app:whatsync-app-business-templates-attio-workflows-api
  name: whatsync-app Business templates (Attio workflows) API
  description: List approved Meta WhatsApp templates and send one from an Attio workflow with a workspace service API key.
  humanURL: https://whatsync.app/docs/api/tools
  baseURL: https://whatsync.app
  tags:
  - Business templates (Attio workflows)
  properties:
  - type: OpenAPI
    url: openapi/whatsync-app-business-templates-attio-workflows-api-openapi.yml
  - type: JSONSchema
    url: json-schema/whatsync-app-send-template-request-schema.json
- aid: whatsync-app:whatsync-app-campaigns-api
  name: whatsync-app Campaigns API
  description: The Campaigns API from whatsync-app — 10 operation(s) for campaigns.
  humanURL: https://whatsync.app/docs/api/tools
  baseURL: https://whatsync.app
  tags:
  - Campaigns
  properties:
  - type: OpenAPI
    url: openapi/whatsync-app-campaigns-api-openapi.yml
  - type: JSONSchema
    url: json-schema/whatsync-app-send-template-request-schema.json
- aid: whatsync-app:whatsync-app-forms-api
  name: whatsync-app Forms API
  description: The Forms API from whatsync-app — 6 operation(s) for forms.
  humanURL: https://whatsync.app/docs/api/tools
  baseURL: https://whatsync.app
  tags:
  - Forms
  properties:
  - type: OpenAPI
    url: openapi/whatsync-app-forms-api-openapi.yml
  - type: JSONSchema
    url: json-schema/whatsync-app-send-template-request-schema.json
- aid: whatsync-app:whatsync-app-groups-api
  name: whatsync-app Groups API
  description: The Groups API from whatsync-app — 15 operation(s) for groups.
  humanURL: https://whatsync.app/docs/api/tools
  baseURL: https://whatsync.app
  tags:
  - Groups
  properties:
  - type: OpenAPI
    url: openapi/whatsync-app-groups-api-openapi.yml
  - type: JSONSchema
    url: json-schema/whatsync-app-send-template-request-schema.json
- aid: whatsync-app:whatsync-app-reading-and-account-api
  name: whatsync-app Reading and account API
  description: The Reading and account API from whatsync-app — 11 operation(s) for reading and account.
  humanURL: https://whatsync.app/docs/api/tools
  baseURL: https://whatsync.app
  tags:
  - Reading and account
  properties:
  - type: OpenAPI
    url: openapi/whatsync-app-reading-and-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/whatsync-app-send-template-request-schema.json
- aid: whatsync-app:whatsync-app-saving-and-filters-api
  name: whatsync-app Saving and filters API
  description: The Saving and filters API from whatsync-app — 6 operation(s) for saving and filters.
  humanURL: https://whatsync.app/docs/api/tools
  baseURL: https://whatsync.app
  tags:
  - Saving and filters
  properties:
  - type: OpenAPI
    url: openapi/whatsync-app-saving-and-filters-api-openapi.yml
  - type: JSONSchema
    url: json-schema/whatsync-app-send-template-request-schema.json
- aid: whatsync-app:whatsync-app-sending-and-message-actions-api
  name: whatsync-app Sending and message actions API
  description: The Sending and message actions API from whatsync-app — 16 operation(s) for sending and message actions.
  humanURL: https://whatsync.app/docs/api/tools
  baseURL: https://whatsync.app
  tags:
  - Sending and message actions
  properties:
  - type: OpenAPI
    url: openapi/whatsync-app-sending-and-message-actions-api-openapi.yml
  - type: JSONSchema
    url: json-schema/whatsync-app-send-template-request-schema.json
- aid: whatsync-app:whatsync-app-webhooks-api
  name: whatsync-app Webhooks API
  description: The Webhooks API from whatsync-app — 7 operation(s) for webhooks.
  humanURL: https://whatsync.app/docs/api/tools
  baseURL: https://whatsync.app
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/whatsync-app-webhooks-api-openapi.yml
  - type: JSONSchema
    url: json-schema/whatsync-app-send-template-request-schema.json
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-10-30'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://whatsync.app/openapi.json
    status: null
  - url: https://whatsync.app/api/mcp
    status: 401
  - url: https://whatsync.app/
    status: 200
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 32
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

whatsync-app API — frequently asked questions

Does whatsync-app have an API?

Yes. APIs.io lists 10 APIs from whatsync-app, including whatsync-app Account API, whatsync-app Business and pricing API and whatsync-app Business templates (Attio workflows) API, and 7 more.

Is there an OpenAPI specification for the whatsync-app API?

Yes. APIs.io indexes 10 OpenAPI specifications for whatsync-app, each linked for download from this page.

How do I authenticate with the whatsync-app API?

whatsync-app documents its authentication (0 schemes). The details are profiled on APIs.io as Whatsync App Authentication.

Is the whatsync-app API ready for AI agents?

whatsync-app has a Kin Score of 48.8 out of 100 (developing) and an Agent Readiness score of 62.7 (agent-native), scored by API Evangelist on 2026-10-31.

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