SleekFlow website screenshot

SleekFlow

SleekFlow is an omnichannel social-commerce and customer-engagement platform that unifies WhatsApp, Facebook Messenger, Instagram, WeChat, LINE, SMS, and live chat into a single inbox with automation, broadcast, and AI. The SleekFlow Platform API exposes contacts, conversations, messaging, companies, lists, staff and teams, and webhooks for building custom integrations on top of the platform.

SleekFlow publishes 7 APIs on the APIs.io network, including Companies API, Contacts API, Conversations API, and 4 more. Tagged areas include Messaging, Omnichannel, WhatsApp, Customer Engagement, and Social Commerce.

SleekFlow’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.1/100 developing ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessFreemiumSelf serve⚡ Free to try
1 APIs
MessagingOmnichannelWhatsAppCustomer EngagementSocial CommerceAutomation

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 40.1/100 · developing
Contract Quality 11.9 / 23
Developer Ergonomics 5.8 / 18
Access Clarity 7.1 / 18
Operational Transparency 3.7 / 12
Contract Governance 0.0 / 11
Discoverability 6.2 / 9
Create-or-Update Ergonomics 2.2 / 10
Agent readiness — 20/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 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 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
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.
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/sleekflow: 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 7

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

SleekFlow Companies API

Manage company records.

SleekFlow Contacts API

Create, read, search, update, and delete contacts.

SleekFlow Conversations API

Read conversations and update conversation assignment.

SleekFlow Lists API

Manage contact lists and list membership.

SleekFlow Messaging API

Send messages, files, and internal notes; check conversation windows.

SleekFlow Staff and Teams API

Manage staff and teams.

SleekFlow Webhooks API

Register webhook subscriptions for platform events.

Scroll for all 7

Open Collections 9

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

API Collection

OPEN COLLECTION

SleekFlow Platform Companies API

OPEN COLLECTION

SleekFlow Platform Companies Contacts API

OPEN COLLECTION

SleekFlow Platform Companies Conversations API

OPEN COLLECTION

SleekFlow Platform Companies Lists API

OPEN COLLECTION

SleekFlow Platform Companies Messaging API

OPEN COLLECTION

SleekFlow Platform Companies Staff and Teams API

OPEN COLLECTION

SleekFlow Platform Companies Webhooks API

OPEN COLLECTION

SleekFlow Platform API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Sleekflow Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sleekflow Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Sleekflow Finops

FINOPS

Security Posture 2

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

Sleekflow Authentication

apiKey · 1 scheme

SECURITY

Sleekflow Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Sleekflow Agentic Access

27 operations · 14 acting

27 operations · 14 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap
CapabilityMap

Source (apis.yml)

apis.yml Raw ↑ 
aid: sleekflow
url: https://raw.githubusercontent.com/api-evangelist/sleekflow/refs/heads/main/apis.yml
name: SleekFlow
kind: company
description: SleekFlow is an omnichannel social-commerce and customer-engagement platform that unifies WhatsApp, Facebook
  Messenger, Instagram, WeChat, LINE, SMS, and live chat into a single inbox with automation, broadcast, and AI. The SleekFlow
  Platform API exposes contacts, conversations, messaging, companies, lists, staff and teams, and webhooks for building custom
  integrations on top of the platform.
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: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sleekflow.png
tags:
- Messaging
- Omnichannel
- WhatsApp
- Customer Engagement
- Social Commerce
- Automation
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.23'
apis:
- aid: sleekflow:sleekflow-companies-api
  name: SleekFlow Companies API
  description: Manage company records.
  humanURL: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  baseURL: https://api.sleekflow.io
  tags:
  - Companies
  properties:
  - type: OpenAPI
    url: openapi/sleekflow-companies-api-openapi.yml
  - type: Documentation
    url: https://help.sleekflow.io/en_US/integrations/platform-api-integration
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  - type: PostmanCollection
    url: collections/sleekflow.postman_collection.json
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/9ty13q0r571om-messaging
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/nijbjgxrs4s50-sleek-flow-platform-api
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/t21aeu2xvtiw6-staff-and-team
  - type: Review
    url: review.yml
- aid: sleekflow:sleekflow-contacts-api
  name: SleekFlow Contacts API
  description: Create, read, search, update, and delete contacts.
  humanURL: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  baseURL: https://api.sleekflow.io
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/sleekflow-contacts-api-openapi.yml
  - type: Documentation
    url: https://help.sleekflow.io/en_US/integrations/platform-api-integration
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  - type: PostmanCollection
    url: collections/sleekflow.postman_collection.json
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/9ty13q0r571om-messaging
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/nijbjgxrs4s50-sleek-flow-platform-api
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/t21aeu2xvtiw6-staff-and-team
  - type: Review
    url: review.yml
- aid: sleekflow:sleekflow-conversations-api
  name: SleekFlow Conversations API
  description: Read conversations and update conversation assignment.
  humanURL: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  baseURL: https://api.sleekflow.io
  tags:
  - Conversations
  properties:
  - type: OpenAPI
    url: openapi/sleekflow-conversations-api-openapi.yml
  - type: Documentation
    url: https://help.sleekflow.io/en_US/integrations/platform-api-integration
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  - type: PostmanCollection
    url: collections/sleekflow.postman_collection.json
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/9ty13q0r571om-messaging
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/nijbjgxrs4s50-sleek-flow-platform-api
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/t21aeu2xvtiw6-staff-and-team
  - type: Review
    url: review.yml
- aid: sleekflow:sleekflow-lists-api
  name: SleekFlow Lists API
  description: Manage contact lists and list membership.
  humanURL: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  baseURL: https://api.sleekflow.io
  tags:
  - List
  tags_raw:
  - Lists
  properties:
  - type: OpenAPI
    url: openapi/sleekflow-lists-api-openapi.yml
  - type: Documentation
    url: https://help.sleekflow.io/en_US/integrations/platform-api-integration
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  - type: PostmanCollection
    url: collections/sleekflow.postman_collection.json
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/9ty13q0r571om-messaging
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/nijbjgxrs4s50-sleek-flow-platform-api
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/t21aeu2xvtiw6-staff-and-team
  - type: Review
    url: review.yml
- aid: sleekflow:sleekflow-messaging-api
  name: SleekFlow Messaging API
  description: Send messages, files, and internal notes; check conversation windows.
  humanURL: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  baseURL: https://api.sleekflow.io
  tags:
  - Messaging
  properties:
  - type: OpenAPI
    url: openapi/sleekflow-messaging-api-openapi.yml
  - type: Documentation
    url: https://help.sleekflow.io/en_US/integrations/platform-api-integration
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  - type: PostmanCollection
    url: collections/sleekflow.postman_collection.json
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/9ty13q0r571om-messaging
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/nijbjgxrs4s50-sleek-flow-platform-api
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/t21aeu2xvtiw6-staff-and-team
  - type: Review
    url: review.yml
- aid: sleekflow:sleekflow-staff-and-teams-api
  name: SleekFlow Staff and Teams API
  description: Manage staff and teams.
  humanURL: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  baseURL: https://api.sleekflow.io
  tags:
  - Staff and Teams
  properties:
  - type: OpenAPI
    url: openapi/sleekflow-staff-and-teams-api-openapi.yml
  - type: Documentation
    url: https://help.sleekflow.io/en_US/integrations/platform-api-integration
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  - type: PostmanCollection
    url: collections/sleekflow.postman_collection.json
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/9ty13q0r571om-messaging
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/nijbjgxrs4s50-sleek-flow-platform-api
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/t21aeu2xvtiw6-staff-and-team
  - type: Review
    url: review.yml
- aid: sleekflow:sleekflow-webhooks-api
  name: SleekFlow Webhooks API
  description: Register webhook subscriptions for platform events.
  humanURL: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  baseURL: https://api.sleekflow.io
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/sleekflow-webhooks-api-openapi.yml
  - type: Documentation
    url: https://help.sleekflow.io/en_US/integrations/platform-api-integration
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/3z6iu3fo5evix-contacts
  - type: PostmanCollection
    url: collections/sleekflow.postman_collection.json
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/9ty13q0r571om-messaging
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/nijbjgxrs4s50-sleek-flow-platform-api
  - type: APIReference
    url: https://apidoc.sleekflow.io/docs/platform-api/t21aeu2xvtiw6-staff-and-team
  - type: Review
    url: review.yml
common:
- type: CapabilityMap
  url: capabilities/sleekflow-capability-edges.yml
  name: SleekFlow Business Capability Map
- type: AgenticAccess
  url: agentic-access/sleekflow-agentic-access.yml
- type: DomainSecurity
  url: security/sleekflow-domain-security.yml
- type: Authentication
  url: authentication/sleekflow-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/sleekflow
- type: Website
  url: https://sleekflow.io
- type: Documentation
  url: https://apidoc.sleekflow.io/docs/platform-api/nijbjgxrs4s50-sleek-flow-platform-api
- type: Plans
  url: plans/sleekflow-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sleekflow-rate-limits.yml
- type: FinOps
  url: finops/sleekflow-finops.yml
- url: https://sleekflow.io/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this
  • find_providersBrowse and filter every provider in the catalog.
  • get_provider_artifactsEvery artifact this provider publishes, grouped by type.
  • 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.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This provider 
curl "https://apis.io/api/v1/providers/sleekflow"
All providers 
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose 
curl "https://apis.io/api/v1/providers/sleekflow/operations?limit=25"
How their score was established 
curl "https://apis.io/api/v1/providers/sleekflow/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.