Vonage Messages API (WhatsApp)

Best for: Regulated or enterprise workloads - compliance attestations and an enterprise plan; AI agents and automation - an agent-ready surface (MCP / llms.txt); Teams needing broad API coverage out of the box

Avoid if: You want to try it free before paying

• ████░░░░░░
  40 / 100
  Agent friendliness
• ████████▒░
  85 / 100
  Pricing transparency
• ███████▒░░
  75 / 100
  Setup speed
• █▒░░░░░░░░
  15 / 100
  Docs quality
• ████████▒░
  85 / 100
  Procurement ease
• ███████▒░░
  75 / 100
  Trust readiness

Scores are computed deterministically from this profile's published, sourced fields (pricing, compliance, capabilities, docs and developer-surface signals) - not from reviews or paid placement. Each axis is 0-100; an unknown signal scores 0 for that axis. Procurement ease is the inverse of buying friction (higher = easier to adopt).

Pricing model

Usage-based [2]developer.vonage.com/en/messages/concepts/whatsapp“Vonage employs a Per-Message Pricing (PMP) model effective July 1, 2025: Platform fee charged per message. WhatsApp fee charged per template message based on three categories: Utility templates, Authentication templates, Marketing templates.”api.support.vonage.com/hc/en-us/articles/20773952146460-WhatsApp-Pricing-Vonage-Platform-Fees“Vonage now has a pay-per-message platform fee with rates starting as low as 0.0001 Euros (0.00015 USD) per message.”

Published pricing

✓ Yes [3]vonage.com/communications-apis/messages/pricing/“Messages API Pricing | Vonage”api.support.vonage.com/hc/en-us/articles/20773952146460-WhatsApp-Pricing-Vonage-Platform-Fees“Vonage now has a pay-per-message platform fee with rates starting as low as 0.0001 Euros (0.00015 USD) per message.”

Free tier

✗ No [4]developer.vonage.com/en/messages/concepts/messages-api-sandbox“Monthly limit: 100 messages/month with a fair usage policy. Rate limit: One message per second. Cost: Free to use. Overage response: 429 HTTP error when monthly limit exceeded.”

Free tier details

No recurring $0 platform plan. Meta provides 1,000 free service conversations/month at the WABA level (Meta-level allowance, not a Vonage platform free tier). The Vonage Messages API sandbox is free to use (100 messages/month across channels, 1 msg/sec) for development and testing only - this is a development sandbox, not a production free tier.

Self-serve signup

✓ Yes [5]api.support.vonage.com/hc/en-us/articles/6025833602580-Getting-Started-with-Vonage-s-WhatsApp-Business-API-Embedded-Sign-Up“Vonage offers a self-service onboarding tool, embedded in Vonage's Customer Dashboard, allowing you to create your own WhatsApp Business Account (WABA). You can be onboarding and sending WhatsApp messages in as little as 10 minutes.”

Requires sales call

✗ No

Enterprise plan

✓ Yes [6]vonage.com/communications-apis/services/support/“For customers with high volume or critical use cases, Vonage recommends their Premium or Enterprise Support Plans. The Enterprise Plan includes solution and consulting services.”

Supported actions

send_template_message, send_session_message, send_media (image / audio / video / document), send_location, send_contact, send_sticker, send_reaction, interactive_buttons (reply buttons), list_messages, whatsapp_flows, product_messages (single and multi-product), carousel_templates, media_message_templates, authentication_templates, inbound_webhooks, message_status_callbacks, mark_message_as_read, show_replying_indicator, template_management (list / create / update / delete), phone_number_registration (via WhatsApp Provisioning API), message_failover [7]developer.vonage.com/en/messages/guides/whatsapp-flows“WhatsApp Flows enable businesses to collect information from their users via rich UI components within WhatsApp.”developer.vonage.com/en/messages/overview“WhatsApp: Message templates, authentication templates, media messages, audio/video/file/image/location sending, quick replies, buttons, contacts, reactions, stickers, and carousel templates”

Regions

global

Languages

Arabic, Bengali, Bulgarian, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swahili, Swedish, Thai, Turkish, Ukrainian, Vietnamese

Input types

text, template (utility / authentication / marketing), media message template, image, audio, video, document, location, contact, sticker, reaction, interactive buttons / reply buttons, list messages, product messages (single and multi-product), carousel templates, WhatsApp Flows

Output types

message_status (submitted / delivered / rejected / undeliverable), inbound message webhook, delivery receipts, order submissions (cart / product details), WhatsApp Flows response payload

Webhooks

✓ Yes [8]developer.vonage.com/en/messages/concepts/messages-api-sandbox“Inbound and status webhooks must be configured separately from account-level settings. Vonage retries failed webhooks (non-200 responses) with increasing intervals over 24 hours.”

Sandbox / test mode

✓ Yes [9]developer.vonage.com/en/messages/concepts/messages-api-sandbox“The Messages API Sandbox provides a testing environment for WhatsApp messaging without requiring a WhatsApp Business Account setup. It's designed for initial API exploration rather than production use.”api.support.vonage.com/hc/en-us/articles/11679887237276-What-is-the-Messages-API-sandbox-rate-limit“The Messages API sandbox has a limit of 1 message per second and 100 messages per month.”

SDK languages

Node.js, Python, Java, Ruby, .NET, PHP, Kotlin [10]developer.vonage.com/en/messages/code-snippets/whatsapp/send-text“The documentation provides code examples for: Bash/cURL, JavaScript (Node.js), Kotlin, Java, C#, PHP, Python, Ruby”

MCP server

✓ Yes [11]developer.vonage.com/en/blog/spread-holiday-cheer-with-ai-agents-and-vonage-mcp-messaging-tools“the Vonage Tooling MCP Server exposes five messaging tools: whatsapp-send-text, whatsapp-send-text-with-sms-failover, rcs-send-text, rcs-send-text-with-sms-failover, sms”developer.vonage.com/en/blog/introducing-the-vonage-mcp-tooling-server“The MCP Tooling Server enables AI-driven tools to perform real operations, from sending SMS to managing WhatsApp flows, all within the developer workflow.”

SOC 2

Unknown [12]prnewswire.com/news-releases/vonage-achieves-soc-2-type-ii-compliance-for-network-apis-reinforcing-its-commitment-to-data-security-and-customer-trust-302355586.html“Vonage has achieved SOC 2 Type II compliance for its Vonage Network APIs. Vonage is one of the first network API providers to earn this certification.”

HIPAA

✓ Yes [13]vonage.com/communications-apis/platform/“For Vonage's Communications API Platform, the platform is certified for ISO27001, HIPAA, SOC 2, and PCI DSS.”vonage.com/security/communication-apis/“Vonage maintains a wide range of compliance certifications across its product lines that are independently tested and audited by third parties, including ISO 27001, PCI-DSS, SOC, HIPAA, HITECH, HITRUST, and CSA STAR.”

GDPR

✓ Yes [14]vonage.com/security/communication-apis/“Vonage also adheres to global privacy standards through the General Data Protection Regulation (GDPR).”

ISO 27001

✓ Yes [15]vonage.com/communications-apis/platform/“For Vonage's Communications API Platform, the platform is certified for ISO27001, HIPAA, SOC 2, and PCI DSS.”

PCI DSS

✓ Yes [16]vonage.com/communications-apis/platform/“For Vonage's Communications API Platform, the platform is certified for ISO27001, HIPAA, SOC 2, and PCI DSS.”

Published SLA

✓ Yes [17]vonage.com/communications-apis/services/support/“The Premium support plan includes a 99.99% platform availability SLA. The Vonage API platform boasts 99.99% uptime and is deployed in multiple regions globally.”

Rate limits

Sandbox: 1 message/second, 100 messages/month across all channels. Production: default 75 API requests/second per API key (429 returned on exceed). Meta-enforced WhatsApp messaging tiers (business-initiated conversations per 24-hour rolling window): unverified accounts 250 unique customers; verified accounts start at 1,000 unique customers and scale automatically (1K → 10K → 100K → unlimited) based on phone number quality rating and messaging patterns. Template creation rate: 100 templates/hour. Unverified accounts: max 250 templates; verified accounts: max 6,000 templates. [18]developer.vonage.com/en/messages/technical-details“The default rate limit is 75 requests per second per API key. Exceeding this threshold returns a 429 HTTP response.”api.support.vonage.com/hc/en-us/articles/13159737704348-WhatsApp-Quality-Rating-and-Messaging-Limits“Messaging limits determine the maximum number of business-initiated conversations you can initiate using each phone number in a rolling 24-hour period. Business phone numbers without a connected status and an approved display name are limited to 250 business-initiated conversations in a rolling 24-hour period.”

Known restrictions

WhatsApp is in Limited Availability - Vonage cannot guarantee you will receive a WhatsApp account, Businesses must obtain customer opt-in consent before sending messages, Messages outside the 24-hour customer care window must use pre-approved Message Templates, Templates must be approved by WhatsApp/Meta before use, Only templates in your own namespace are valid; external templates return error 1022, Template header/footer max 60 characters; body max 1,024 characters, Meta Business Verification required to scale beyond 250 unique contacts/24h or to obtain Official Business Account status, WhatsApp templates not available in sandbox environment, Vonage per-message platform fee charged per message in addition to Meta per-message fees; effective July 1 2025 Meta moved from conversation-based to per-message pricing, Vonage Platform Fee updated April 1, 2026 to align with Meta rate card changes, Approved template names cannot be reused for 30 days after deletion, Enterprise contracts may bundle Meta rates with annual minimum commitments and monthly minimums regardless of usage [19]developer.vonage.com/en/messages/concepts/whatsapp“WhatsApp is in Limited Availability and Vonage cannot guarantee you will receive a WhatsApp account.”whapi.cloud/blog/whatsapp-bsp-pricing-hidden-costs-2026“Enterprise contracts bundle Meta rates with professional services and annual minimum commitments. Monthly minimums apply regardless of actual usage — a fixed cost floor regardless of your send volume in a given month.”api.support.vonage.com/hc/en-us/articles/20773952146460-WhatsApp-Pricing-Vonage-Platform-Fees“The Vonage Platform Fee will be updated effective April 1, 2026.”

• Docs
• API reference
• llms.txt
• Changelog

Docs rendering: static · llms.txt present

API style

rest

Base URL

https://api.nexmo.com/v1/messages

Version

v1

Versioning

url

Stability

ga

Auth methods

jwt, basic

Idempotency keys

✗ No

Error format

vendor-specific

Webhook signing

JWT HS256 in Authorization header (payload_hash SHA-256)

Rate limit

75 / second

SDKs

• Node.js @vonage/server-sdk · repo
• Python vonage · repo
• Java com.vonage:client · repo
• Ruby vonage · repo
• .NET Vonage · repo
• PHP vonage/client-core · repo
• Kotlin com.vonage:client-jvm · repo

• Auth docs
• Quickstart
• MCP server
• Webhook events

Launched

2022-01-01

Notable customers

Aramex

• Twilio WhatsApp Business API

  "Enable businesses to engage customers through WhatsApp messaging and calling via programmable APIs" connecting "3+ billion users on the world's most popular messaging app"

  Usage · public pricing · self-serve

• Bird WhatsApp API (MessageBird)

  "Engage customers worldwide with WhatsApp API" - Bird connects marketing, service, and operations teams with customers on the world's most popular messaging app through rich message templates, interactive elements, product catalogs, and one-click payments via a unified API platform.

  Hybrid · public pricing · self-serve

• Infobip WhatsApp Business API

  "Meta-authorized partner that provides businesses with secure access to WhatsApp's messaging infrastructure, enabling secure interactions, 24/7 customer support, and unique experiences at scale."

  Sales-led · self-serve

• WhatsApp Cloud API (Meta)

  "The Cloud API, hosted by Meta, allows you to implement WhatsApp Business APIs without the cost of hosting your own servers and also allows you to more easily scale your business messaging."

  Usage · public pricing · self-serve

• 360dialog WhatsApp Business API

  "WhatsApp Business solutions that drive real results"

  Hybrid · public pricing · self-serve

• Gupshup WhatsApp Business API

  "The all-in-one platform for managing conversations at scale"

  Usage · public pricing · self-serve

Vonage Messages API (WhatsApp) alternatives · Vonage Messages API (WhatsApp) vs Twilio WhatsApp Business API · All WhatsApp Business APIs APIs

Each field above carries a numbered source - hover for a preview, click to jump here.

1. ↑Description: developer.vonage.com
2. ↑Pricing model: developer.vonage.com · api.support.vonage.com
3. ↑Published pricing: vonage.com · api.support.vonage.com
4. ↑Free tier: developer.vonage.com
5. ↑Self-serve signup: api.support.vonage.com
6. ↑Enterprise plan: vonage.com
7. ↑Supported actions: developer.vonage.com · developer.vonage.com
8. ↑Webhooks: developer.vonage.com
9. ↑Sandbox: developer.vonage.com · api.support.vonage.com
10. ↑SDK languages: developer.vonage.com
11. ↑MCP server: developer.vonage.com · developer.vonage.com
12. ↑SOC 2: prnewswire.com
13. ↑HIPAA: vonage.com · vonage.com
14. ↑GDPR: vonage.com
15. ↑ISO 27001: vonage.com
16. ↑PCI DSS: vonage.com
17. ↑Published SLA: vonage.com
18. ↑Rate limits: developer.vonage.com · api.support.vonage.com
19. ↑Known restrictions: developer.vonage.com · whapi.cloud · api.support.vonage.com

Every field change, who made it, and when - from our audited data pipeline and editors.

1. 2026-06-16 Changelog URL: (none) → https://developer.vonage.com/changelog
2. 2026-06-16 Llms Txt Present: (none) → Yes
3. 2026-06-16 Llms Txt URL: (none) → https://developer.vonage.com/llms.txt
4. 2026-06-16 Rendering: (none) → static
5. 2026-06-16 Has Structured Data: (none) → No
6. 2026-06-16 Robots Allows Agents: (none) → Yes
7. 2026-06-16 API Reference URL: (none) → https://developer.vonage.com/en/reference
8. 2026-06-16 Summary Md: (none) → Vonage Messages API (WhatsApp) is a REST-based multichannel messaging platform …
9. 2026-06-16 Avoid If: (none) → You want to try it free before paying
10. 2026-06-16 Scoring Methodology: (none) → Scores are computed deterministically from this profile's published, sourced fi…
11. 2026-06-16 Score Agent Friendliness: (none) → 40
12. 2026-06-16 Score Pricing Transparency: (none) → 85
13. 2026-06-16 Score Setup Speed: (none) → 75
14. 2026-06-16 Score Docs Quality: (none) → 15
15. 2026-06-16 Score Procurement Friction: (none) → 85
16. 2026-06-16 Score Trust Readiness: (none) → 75
17. 2026-06-16 Best For: (none) → Regulated or enterprise workloads - compliance attestations and an enterprise p…
18. 2026-06-16 Docs URL: (none) → https://developer.vonage.com/en/home
19. 2026-06-16 Free Tier Available: set to No
20. 2026-06-16 Free Tier Details: set to No recurring $0 platform plan. Meta provides 1,000 free service conversations/m…
21. 2026-06-16 Self Serve Signup: set to Yes
22. 2026-06-16 Requires Sales Call: set to No
23. 2026-06-16 Enterprise Plan Available: set to Yes
24. 2026-06-16 SOC 2: set to unknown
25. 2026-06-16 HIPAA: set to Yes
26. 2026-06-16 GDPR: set to Yes
27. 2026-06-16 ISO 27001: set to Yes
28. 2026-06-16 PCI DSS: set to Yes
29. 2026-06-16 SLA Published: set to Yes
30. 2026-06-16 SLA URL: set to https://www.vonage.com/communications-apis/services/support/
31. 2026-06-16 Data Retention Policy URL: set to https://www.vonage.com/privacy-policy
32. 2026-06-16 Documented Rate Limits: set to Sandbox: 1 message/second, 100 messages/month across all channels. Production: …
33. 2026-06-16 Rate Limit Requests: set to 75
34. 2026-06-16 Rate Limit Window: set to second
35. 2026-06-16 Fields Not Found: set to minimum_commitment (no publicly stated monthly/annual floor for self-serve), so…
36. 2026-06-16 Source Confidence: set to high
37. 2026-06-16 Known Restrictions: set to WhatsApp is in Limited Availability - Vonage cannot guarantee you will receive …
38. 2026-06-16 Auth Methods: set to jwt, basic
39. 2026-06-16 Auth Docs URL: set to https://developer.vonage.com/en/getting-started/concepts/authentication
40. 2026-06-16 API Style: set to rest
41. 2026-06-16 Base URL: set to https://api.nexmo.com/v1/messages
42. 2026-06-16 API Version: set to v1
43. 2026-06-16 Versioning Scheme: set to url
44. 2026-06-16 Stability: set to ga
45. 2026-06-16 MCP URL: set to https://documentation-mcp.vonage.dev/mcp
46. 2026-06-16 Quickstart URL: set to https://developer.vonage.com/en/messages/code-snippets/send-a-whatsapp-message
47. 2026-06-16 Idempotency Supported: set to No
48. 2026-06-16 Slug: set to vonage-whatsapp
49. 2026-06-16 Webhook Signing: set to JWT HS256 in Authorization header (payload_hash SHA-256)
50. 2026-06-16 Webhook Events URL: set to https://developer.vonage.com/en/api/messages

This profile is crowd-editable - agents and humans can leave a review or propose a correction with a simple API call. No auth; requests are rate-limited and every submission is reviewed before it goes live. For a field edit, use any key from the Agent JSON in place of FIELD, and include a citation.

curl -X POST https://apio.sh/api/feedback/vonage-whatsapp \
  -H 'Content-Type: application/json' \
  -d '{"kind":"review","rating":5,"body":"Your experience with this API…"}'

curl -X POST https://apio.sh/api/suggest/vonage-whatsapp/FIELD \
  -H 'Content-Type: application/json' \
  -d '{"value":"corrected value","citations":[{"url":"https://source.example/page","excerpt":"supporting quote"}],"note":"what changed and why"}'

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