Gupshup

Gupshup is a conversational messaging and CPaaS platform (headquartered in India) that lets businesses send and receive messages across WhatsApp, SMS, RCS, and other channels, plus build chatbots and conversational AI journeys. The developer platform exposes REST APIs on api.gupshup.io - most prominently the WhatsApp Business API (send session and template messages, opt-in management, templates, media, and inbound webhooks) - authenticated with an apikey header and scoped to a registered app. Separate SMS, RCS, and Partner API surfaces are also documented.

Gupshup publishes 6 API contracts indexed on the APIs.io network, including Messaging API, Opt-In API, Templates API, and 3 more. Tagged areas include Messaging, WhatsApp, Conversational AI, CPaaS, and SMS.

Gupshup’s developer surface includes authentication, documentation, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

23.7/100 emerging ▬ flat Agent 20/100 agent aware Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

AccessPaid

1 published contract

Messaging WhatsApp Conversational AI CPaaS SMS RCS India Chatbots Business Messaging Communications

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 23.7/100 · emerging

Contract Quality 9.6 / 19

Developer Ergonomics 3.6 / 15

Access Clarity 1.2 / 15

Operational Transparency 0.8 / 10

Contract Governance 0.0 / 9

Discoverability 4.3 / 8

Regulatory Posture 1.5 / 15

Create-or-Update Ergonomics 0.0 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Telecommunications 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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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/gupshup: 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 →

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
India Stack (Account Aggregator, ONDC, UPI, DigiLocker, Aadhaar)	undeclared	-	-	-

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.

RCS

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 6

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

Gupshup SMS API

Broadcast SMS to a single number or many numbers programmatically via POST /msg on the /sm surface. Note - Gupshup has announced end-of-life for the /sm endpoints and recommends...

Gupshup RCS API

Send RCS (Rich Communication Services) business messages - rich cards, carousels, suggested replies, and media. RCS is onboarding-gated (username / password issued by Gupshup) a...

Gupshup Partner API

Token-authenticated Partner surface (partner.gupshup.io) for BSPs and resellers - manage apps, templates, subscriptions/callbacks, and send messages through Meta-format passthro...

Gupshup Messaging API

Send WhatsApp session messages.

Gupshup Opt-In API

Manage user opt-in / opt-out and list interacted users.

Gupshup Templates API

Send and list WhatsApp template (HSM) messages.

Open Collections 4

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

Gupshup WhatsApp Business Messaging API

OPEN COLLECTION

Gupshup WhatsApp Business Messaging Opt-In API

OPEN COLLECTION

Gupshup WhatsApp Business Messaging Templates API

OPEN COLLECTION

Gupshup WhatsApp Business API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Gupshup Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Gupshup Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

Gupshup Finops

FINOPS

Security Posture 2

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

Gupshup Authentication

apiKey · 1 scheme

SECURITY

Gupshup Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Gupshup Agentic Access

6 operations · 4 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

Authentication

Authentication

DomainSecurity

DomainSecurity

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

Website

Website

Blog

Blog

Source (apis.yml)

aid: gupshup
url: https://raw.githubusercontent.com/api-evangelist/gupshup/refs/heads/main/apis.yml
name: Gupshup
kind: company
description: Gupshup is a conversational messaging and CPaaS platform (headquartered in India) that lets businesses send and
  receive messages across WhatsApp, SMS, RCS, and other channels, plus build chatbots and conversational AI journeys. The
  developer platform exposes REST APIs on api.gupshup.io - most prominently the WhatsApp Business API (send session and template
  messages, opt-in management, templates, media, and inbound webhooks) - authenticated with an apikey header and scoped to
  a registered app. Separate SMS, RCS, and Partner API surfaces are also documented.
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: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/gupshup.png
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-03
tags:
- Messaging
- WhatsApp
- Conversational AI
- CPaaS
- SMS
- RCS
- India
- Chatbots
- Business Messaging
- Communications
created: '2026-07-12'
modified: '2026-07-12'
specificationVersion: '0.23'
apis:
- aid: gupshup:gupshup-sms-api
  name: Gupshup SMS API
  tags:
  - SMS
  - Messaging
  - Notification
  tags_raw:
  - SMS
  - Messaging
  - Notifications
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.gupshup.io/docs/sms-api-introduction
  baseURL: https://api.gupshup.io/sm/api/v1
  properties:
  - url: https://docs.gupshup.io/docs/sms-api-introduction
    type: Documentation
  - url: https://docs.gupshup.io/docs/send-message-to-single-number
    type: Documentation
  description: Broadcast SMS to a single number or many numbers programmatically via POST /msg on the /sm surface. Note -
    Gupshup has announced end-of-life for the /sm endpoints and recommends migrating SMS traffic to the /wa messaging surface.
- aid: gupshup:gupshup-rcs-api
  name: Gupshup RCS API
  tags:
  - RCS
  - Rich Messaging
  - Business Messaging
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.gupshup.io/docs/rcs-api-introduction
  properties:
  - url: https://docs.gupshup.io/docs/rcs-api-introduction
    type: Documentation
  - url: https://docs.gupshup.io/docs/send-rcs-message
    type: APIReference
  description: Send RCS (Rich Communication Services) business messages - rich cards, carousels, suggested replies, and media.
    RCS is onboarding-gated (username / password issued by Gupshup) and served through the Gupshup Enterprise messaging gateway
    rather than the apikey-based api.gupshup.io REST surface.
- aid: gupshup:gupshup-partner-api
  name: Gupshup Partner API
  tags:
  - Partners
  - WhatsApp
  - Passthrough
  tags_raw:
  - Partner
  - WhatsApp
  - Passthrough
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://partner-docs.gupshup.io/docs/whatsapp-passthrough-apis-for-partners
  baseURL: https://partner.gupshup.io/partner
  properties:
  - url: https://partner-docs.gupshup.io/docs/whatsapp-passthrough-apis-for-partners
    type: Documentation
  description: Token-authenticated Partner surface (partner.gupshup.io) for BSPs and resellers - manage apps, templates, subscriptions/callbacks,
    and send messages through Meta-format passthrough endpoints (e.g. POST /partner/app/{appId}/v3/message). Uses a partner
    token / app access token rather than the per-app apikey header.
- aid: gupshup:gupshup-messaging-api
  name: Gupshup Messaging API
  description: Send WhatsApp session messages.
  humanURL: https://docs.gupshup.io/reference/msg
  baseURL: https://api.gupshup.io/wa/api/v1
  tags:
  - Messaging
  properties:
  - type: OpenAPI
    url: openapi/gupshup-messaging-api-openapi.yml
  - type: Documentation
    url: https://docs.gupshup.io/docs/whatsapp-api-introduction
  - type: APIReference
    url: https://docs.gupshup.io/reference/msg
  - type: PostmanCollection
    url: collections/gupshup.postman_collection.json
  - type: OpenCollection
    url: collections/gupshup.opencollection.json
  - type: Documentation
    url: https://docs.gupshup.io/docs/template-messages
  - type: Documentation
    url: https://docs.gupshup.io/docs/optin-message
- aid: gupshup:gupshup-opt-in-api
  name: Gupshup Opt-In API
  description: Manage user opt-in / opt-out and list interacted users.
  humanURL: https://docs.gupshup.io/reference/msg
  baseURL: https://api.gupshup.io/wa/api/v1
  tags:
  - Opt In
  tags_raw:
  - Opt-In
  properties:
  - type: OpenAPI
    url: openapi/gupshup-opt-in-api-openapi.yml
  - type: Documentation
    url: https://docs.gupshup.io/docs/whatsapp-api-introduction
  - type: APIReference
    url: https://docs.gupshup.io/reference/msg
  - type: PostmanCollection
    url: collections/gupshup.postman_collection.json
  - type: OpenCollection
    url: collections/gupshup.opencollection.json
  - type: Documentation
    url: https://docs.gupshup.io/docs/template-messages
  - type: Documentation
    url: https://docs.gupshup.io/docs/optin-message
- aid: gupshup:gupshup-templates-api
  name: Gupshup Templates API
  description: Send and list WhatsApp template (HSM) messages.
  humanURL: https://docs.gupshup.io/reference/msg
  baseURL: https://api.gupshup.io/wa/api/v1
  tags:
  - Templates
  properties:
  - type: OpenAPI
    url: openapi/gupshup-templates-api-openapi.yml
  - type: Documentation
    url: https://docs.gupshup.io/docs/whatsapp-api-introduction
  - type: APIReference
    url: https://docs.gupshup.io/reference/msg
  - type: PostmanCollection
    url: collections/gupshup.postman_collection.json
  - type: OpenCollection
    url: collections/gupshup.opencollection.json
  - type: Documentation
    url: https://docs.gupshup.io/docs/template-messages
  - type: Documentation
    url: https://docs.gupshup.io/docs/optin-message
common:
- type: AgenticAccess
  url: agentic-access/gupshup-agentic-access.yml
- type: Authentication
  url: authentication/gupshup-authentication.yml
- type: DomainSecurity
  url: security/gupshup-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/gupshup
- type: Website
  url: https://www.gupshup.io
- type: Documentation
  url: https://docs.gupshup.io
- type: Plans
  url: plans/gupshup-plans-pricing.yml
- type: RateLimits
  url: rate-limits/gupshup-rate-limits.yml
- type: FinOps
  url: finops/gupshup-finops.yml
- url: https://www.gupshup.io/resources/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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