engageSPARK

engageSPARK is a mobile messaging and engagement platform for reaching hard-to-reach populations in low- and middle-income countries at scale. It lets NGOs, researchers, microfinance institutions, and businesses run SMS, automated voice (IVR), WhatsApp, and pre-paid airtime top-up campaigns across 180+ countries without writing code, or programmatically through its HTTP API. The engageSPARK API (api.engagespark.com, v1) exposes token-authenticated endpoints for sending SMS, WhatsApp, and airtime top-ups, managing contacts and organizations, subscribing and unsubscribing contacts to voice and SMS campaigns, reading message and top-up history, checking organization balance, and managing files. Incoming-SMS and campaign-action webhooks let the platform push survey responses and inbound messages into external systems such as Salesforce or Qualtrics.

engageSPARK publishes 7 APIs on the APIs.io network, including Balance API, Campaigns API, Contacts API, and 4 more. Tagged areas include Company, Messaging, SMS, Voice, and WhatsApp.

The engageSPARK catalog on APIs.io includes 1 event-driven AsyncAPI specification.

engageSPARK’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
46.9/100 developing ▬ flat Agent 42/100 agent aware Full breakdown ↓
scored 2026-07-23 · rubric v0.5
AccessSelf serve
7 APIs
CompanyMessagingSMSVoiceWhatsAppAirtimeCommunicationsCPaaSSurveysInternational Development

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-23 · rubric v0.5
Composite quality — 46.9/100 · developing
Contract Quality 17.7 / 25
Developer Ergonomics 9.6 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 42/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/engagespark: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 7

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

engageSPARK Balance API

The Balance API from engageSPARK — 1 operation(s) for balance.

engageSPARK Campaigns API

The Campaigns API from engageSPARK — 2 operation(s) for campaigns.

engageSPARK Contacts API

The Contacts API from engageSPARK — 2 operation(s) for contacts.

engageSPARK Files API

The Files API from engageSPARK — 2 operation(s) for files.

engageSPARK SMS API

The SMS API from engageSPARK — 4 operation(s) for sms.

engageSPARK Top-Up API

The Top-Up API from engageSPARK — 3 operation(s) for top-up.

engageSPARK WhatsApp API

The WhatsApp API from engageSPARK — 3 operation(s) for whatsapp.

Scroll for all 7

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Engagespark Webhooks

ASYNCAPI

Security Posture 2

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

Engagespark Authentication

http · 1 scheme

SECURITY

Engagespark Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Engagespark Agentic Access

23 operations · 12 acting

23 operations · 12 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login

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
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: engagespark
name: engageSPARK
description: engageSPARK is a mobile messaging and engagement platform for reaching hard-to-reach populations in low- and
  middle-income countries at scale. It lets NGOs, researchers, microfinance institutions, and businesses run SMS, automated
  voice (IVR), WhatsApp, and pre-paid airtime top-up campaigns across 180+ countries without writing code, or programmatically
  through its HTTP API. The engageSPARK API (api.engagespark.com, v1) exposes token-authenticated endpoints for sending SMS,
  WhatsApp, and airtime top-ups, managing contacts and organizations, subscribing and unsubscribing contacts to voice and
  SMS campaigns, reading message and top-up history, checking organization balance, and managing files. Incoming-SMS and campaign-action
  webhooks let the platform push survey responses and inbound messages into external systems such as Salesforce or Qualtrics.
url: https://raw.githubusercontent.com/api-evangelist/engagespark/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://www.engagespark.com/wp-content/uploads/2017/03/engagespark_logo_small.png
tags:
- Company
- Messaging
- SMS
- Voice
- WhatsApp
- Airtime
- Communications
- CPaaS
- Surveys
- International Development
apis:
- aid: engagespark:engagespark-balance-api
  name: engageSPARK Balance API
  description: The Balance API from engageSPARK — 1 operation(s) for balance.
  humanURL: https://openapi.engagespark.com/
  baseURL: https://api.engagespark.com
  tags:
  - Balance
  properties:
  - type: OpenAPI
    url: openapi/engagespark-balance-api-openapi.yml
  - type: Authentication
    url: authentication/engagespark-authentication.yml
  - type: ErrorCatalog
    url: errors/engagespark-problem-types.yml
  - type: Conventions
    url: conventions/engagespark-conventions.yml
  - type: Idempotency
    url: conventions/engagespark-conventions.yml
  - type: DataModel
    url: data-model/engagespark-data-model.yml
  - type: Conformance
    url: conformance/engagespark-conformance.yml
  - type: Lifecycle
    url: lifecycle/engagespark-lifecycle.yml
  - type: Webhooks
    url: asyncapi/engagespark-webhooks.yml
- aid: engagespark:engagespark-campaigns-api
  name: engageSPARK Campaigns API
  description: The Campaigns API from engageSPARK — 2 operation(s) for campaigns.
  humanURL: https://openapi.engagespark.com/
  baseURL: https://api.engagespark.com
  tags:
  - Campaigns
  properties:
  - type: OpenAPI
    url: openapi/engagespark-campaigns-api-openapi.yml
  - type: Authentication
    url: authentication/engagespark-authentication.yml
  - type: ErrorCatalog
    url: errors/engagespark-problem-types.yml
  - type: Conventions
    url: conventions/engagespark-conventions.yml
  - type: Idempotency
    url: conventions/engagespark-conventions.yml
  - type: DataModel
    url: data-model/engagespark-data-model.yml
  - type: Conformance
    url: conformance/engagespark-conformance.yml
  - type: Lifecycle
    url: lifecycle/engagespark-lifecycle.yml
  - type: Webhooks
    url: asyncapi/engagespark-webhooks.yml
- aid: engagespark:engagespark-contacts-api
  name: engageSPARK Contacts API
  description: The Contacts API from engageSPARK — 2 operation(s) for contacts.
  humanURL: https://openapi.engagespark.com/
  baseURL: https://api.engagespark.com
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/engagespark-contacts-api-openapi.yml
  - type: Authentication
    url: authentication/engagespark-authentication.yml
  - type: ErrorCatalog
    url: errors/engagespark-problem-types.yml
  - type: Conventions
    url: conventions/engagespark-conventions.yml
  - type: Idempotency
    url: conventions/engagespark-conventions.yml
  - type: DataModel
    url: data-model/engagespark-data-model.yml
  - type: Conformance
    url: conformance/engagespark-conformance.yml
  - type: Lifecycle
    url: lifecycle/engagespark-lifecycle.yml
  - type: Webhooks
    url: asyncapi/engagespark-webhooks.yml
- aid: engagespark:engagespark-files-api
  name: engageSPARK Files API
  description: The Files API from engageSPARK — 2 operation(s) for files.
  humanURL: https://openapi.engagespark.com/
  baseURL: https://api.engagespark.com
  tags:
  - Files
  properties:
  - type: OpenAPI
    url: openapi/engagespark-files-api-openapi.yml
  - type: Authentication
    url: authentication/engagespark-authentication.yml
  - type: ErrorCatalog
    url: errors/engagespark-problem-types.yml
  - type: Conventions
    url: conventions/engagespark-conventions.yml
  - type: Idempotency
    url: conventions/engagespark-conventions.yml
  - type: DataModel
    url: data-model/engagespark-data-model.yml
  - type: Conformance
    url: conformance/engagespark-conformance.yml
  - type: Lifecycle
    url: lifecycle/engagespark-lifecycle.yml
  - type: Webhooks
    url: asyncapi/engagespark-webhooks.yml
- aid: engagespark:engagespark-sms-api
  name: engageSPARK SMS API
  description: The SMS API from engageSPARK — 4 operation(s) for sms.
  humanURL: https://openapi.engagespark.com/
  baseURL: https://api.engagespark.com
  tags:
  - SMS
  properties:
  - type: OpenAPI
    url: openapi/engagespark-sms-api-openapi.yml
  - type: Authentication
    url: authentication/engagespark-authentication.yml
  - type: ErrorCatalog
    url: errors/engagespark-problem-types.yml
  - type: Conventions
    url: conventions/engagespark-conventions.yml
  - type: Idempotency
    url: conventions/engagespark-conventions.yml
  - type: DataModel
    url: data-model/engagespark-data-model.yml
  - type: Conformance
    url: conformance/engagespark-conformance.yml
  - type: Lifecycle
    url: lifecycle/engagespark-lifecycle.yml
  - type: Webhooks
    url: asyncapi/engagespark-webhooks.yml
- aid: engagespark:engagespark-top-up-api
  name: engageSPARK Top-Up API
  description: The Top-Up API from engageSPARK — 3 operation(s) for top-up.
  humanURL: https://openapi.engagespark.com/
  baseURL: https://api.engagespark.com
  tags:
  - Top-Up
  properties:
  - type: OpenAPI
    url: openapi/engagespark-top-up-api-openapi.yml
  - type: Authentication
    url: authentication/engagespark-authentication.yml
  - type: ErrorCatalog
    url: errors/engagespark-problem-types.yml
  - type: Conventions
    url: conventions/engagespark-conventions.yml
  - type: Idempotency
    url: conventions/engagespark-conventions.yml
  - type: DataModel
    url: data-model/engagespark-data-model.yml
  - type: Conformance
    url: conformance/engagespark-conformance.yml
  - type: Lifecycle
    url: lifecycle/engagespark-lifecycle.yml
  - type: Webhooks
    url: asyncapi/engagespark-webhooks.yml
- aid: engagespark:engagespark-whatsapp-api
  name: engageSPARK WhatsApp API
  description: The WhatsApp API from engageSPARK — 3 operation(s) for whatsapp.
  humanURL: https://openapi.engagespark.com/
  baseURL: https://api.engagespark.com
  tags:
  - WhatsApp
  properties:
  - type: OpenAPI
    url: openapi/engagespark-whatsapp-api-openapi.yml
  - type: Authentication
    url: authentication/engagespark-authentication.yml
  - type: ErrorCatalog
    url: errors/engagespark-problem-types.yml
  - type: Conventions
    url: conventions/engagespark-conventions.yml
  - type: Idempotency
    url: conventions/engagespark-conventions.yml
  - type: DataModel
    url: data-model/engagespark-data-model.yml
  - type: Conformance
    url: conformance/engagespark-conformance.yml
  - type: Lifecycle
    url: lifecycle/engagespark-lifecycle.yml
  - type: Webhooks
    url: asyncapi/engagespark-webhooks.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/engagespark-agentic-access.yml
- type: DomainSecurity
  url: security/engagespark-domain-security.yml
- type: Website
  url: https://engagespark.com
- type: DeveloperPortal
  url: https://www.engagespark.com/support/how-can-i-use-your-api/
- type: Documentation
  url: https://openapi.engagespark.com/
- type: APIReference
  url: https://openapi.engagespark.com/
- type: GettingStarted
  url: https://www.engagespark.com/support/getting-started/
- type: Support
  url: https://www.engagespark.com/support/
- type: Blog
  url: https://www.engagespark.com/blog/
- type: Pricing
  url: https://www.engagespark.com/pricing/
- type: SignUp
  url: https://app.engagespark.com/register
- type: Login
  url: https://app.engagespark.com/login
- type: TermsOfService
  url: https://www.engagespark.com/terms-of-service/
- type: PrivacyPolicy
  url: https://www.engagespark.com/privacy-policy/
- type: GitHubOrganization
  url: https://github.com/engagespark
- type: LLMsTxt
  url: llms/engagespark-llms.txt
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence