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 API contracts indexed 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.

The SleekFlow catalog on APIs.io includes 1 Spectral governance ruleset.

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

🌐 Visit website 📡 Profile data on GitHub

37.7/100 thin ▬ flat Agent 21/100 agent aware Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract

Messaging Omnichannel WhatsApp Customer Engagement Social Commerce Automation

What this lets a business do 2

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

Customer Relationship Management

BC-420

CompaniesContacts

POST /v1/contacts POST /v1/contacts/search POST /v1/companies

Customer Service Management

BC-430

Conversations

GET /v1/conversations GET /v1/conversations/{conversationId}/messages PUT /v1/conversations/{conversationId}/assignee

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 37.7/100 · thin

Contract Quality 9.0 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 5.5 / 15

Operational Transparency 2.1 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.8 / 15

Create-or-Update Ergonomics 2.2 / 10

Agent readiness — 21/100 · 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

Pagination 0 / 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

10 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 32.1 — up to +13.6 composite points
Contract Quality scores 47.8 — up to +13.1 composite points
Access Clarity scores 36.8 — up to +12.6 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/sleekflow/apis.yml: open an issue on github.com/api-evangelist/sleekflow 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
Commerce Platform Ecosystems (Shopify, WooCommerce, Stripe Apps)	builds-on	14.8	-	-

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 1

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.

OpenAPI

measured — observed by APIs.io (published)

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

Scroll for all 7

Open Collections 8

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

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 8

SleekFlow API pricing

Prices published by SleekFlow, read 2026-09-20 from sleekflow.io/whatsapp-pricing-calculator.

Plan	Price
Marketing template (Brazil default view)	US$0.025 per marketing template message
Utility template	US$0.0034 per utility template message
Authentication template	US$0.0034 per authentication template message
Service message	US$0.0034 per service message
SleekFlow plans (FAQ, starting price)	starting from USD 149 per month
Premium Plan	USD 349 per month if you pay yearly

Plan details, limits and sources →

Rate limits

WhatsApp Flow message throttling: 10 messages using this flow have already been sent in the last hour

Rate-limit details →

Pricing Plans 2

Published pricing tiers and plan structures.

Sleekflow Plans Pricing

6 plans

PLANS

Sleekflow Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sleekflow Rate Limits

1 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

SleekFlow

SLA

FinOps 1

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

Sleekflow Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

SleekFlow API Rules

64 rules · 60 errors 2 warnings 2 info

SPECTRAL

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 · 13 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 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

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: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sleekflow.png
x-docs-platform: stoplight
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-04
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: Pricing
  url: https://sleekflow.io/whatsapp-pricing-calculator
- 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

SleekFlow API — frequently asked questions

Does SleekFlow have an API?

Yes. APIs.io lists 7 APIs from SleekFlow, including SleekFlow Companies API, SleekFlow Contacts API and SleekFlow Conversations API, and 4 more.

Is there an OpenAPI specification for the SleekFlow API?

Yes. APIs.io indexes 7 OpenAPI specifications for SleekFlow, each linked for download from this page.

How do I authenticate with the SleekFlow API?

SleekFlow uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Sleekflow Authentication.

How much does the SleekFlow API cost?

SleekFlow publishes its prices; its Marketing template (Brazil default view) plan is US$0.025 per marketing template message as of 2026-09-20. APIs.io lists 6 pricing plans for SleekFlow, with each plan's price, limits and inclusions under Pricing on this page.

Is the SleekFlow API ready for AI agents?

SleekFlow has a Kin Score of 37.7 out of 100 (thin) and an Agent Readiness score of 20.7 (agent-aware), scored by API Evangelist on 2026-11-06.

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