# Infobip API + MCP vs Vonage Messages API + MCP > Vonage Messages API + MCP has a score of 67.1 (B) against Infobip API + MCP's 59.3 (C). Both do messaging sms. The largest gap is reliability, 34 points. Category scores, facts, verdicts and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/infobip-vs-vonage - Markdown: https://www.anchorterminal.com/compare/infobip-vs-vonage.md (~1,600 tokens) - Slim: https://www.anchorterminal.com/compare/infobip-vs-vonage.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/infobip-vs-vonage.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - Updated: 2026-10-04 Vonage Messages API + MCP has a score of 67.1 (B) against Infobip API + MCP's 59.3 (C). Both do messaging sms. The largest gap is reliability, 34 points. - Infobip API + MCP: grade C, 59.3/100, rank #267 of 452. Markdown https://www.anchorterminal.com/tools/infobip.md · JSON https://www.anchorterminal.com/api/v1/tools/infobip.json - Vonage Messages API + MCP: grade B, 67.1/100, rank #146 of 452. Markdown https://www.anchorterminal.com/tools/vonage.md · JSON https://www.anchorterminal.com/api/v1/tools/vonage.json ## Which one, for what Pick Infobip API + MCP for agent ergonomics (+6), transparency & trust (+26). Pick Vonage Messages API + MCP for reliability (+34), security & auth (+6), payments & pricing (+12), maintenance & community (+20). ## Score by category | Category | Weight | Infobip API + MCP | Vonage Messages API + MCP | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 43 | 77 | Vonage Messages API + MCP +34 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 90 | 90 | even | | Agent ergonomics | 13% (16.2 this run) | 56 | 50 | Infobip API + MCP +6 | | Security & auth | 14% (17.5 this run) | 67 | 73 | Vonage Messages API + MCP +6 | | Payments & pricing | 10% (12.5 this run) | 25 | 37 | Vonage Messages API + MCP +12 | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 60 | 80 | Vonage Messages API + MCP +20 | | Transparency & trust | 7% (8.8 this run) | 78 | 52 | Infobip API + MCP +26 | | Negative events | ≤15 | 0 | 0 | | | **Total** | | **59.3 · C** | **67.1 · B** | | ## Facts side by side | Fact | Infobip API + MCP | Vonage Messages API + MCP | | --- | --- | --- | | Kind | HTTP API | HTTP API | | Vendor | Infobip | Vonage (Ericsson) | | Hosted endpoint | `https://api.infobip.com` | `https://api.nexmo.com/v1` | | Transports | HTTP, Streamable HTTP, SSE (legacy) | HTTP, stdio, Streamable HTTP | | Auth | OAuth or key | OAuth or key | | Pricing | Pay per use | Pay per use | | x402 | no | no | | Licence | MIT | Apache-2.0 | | Tools exposed | none | 15 | | Context cost (tools/list) | n/a | n/a | | p95 latency | not measured yet | not measured yet | | Availability (30d) | not measured yet | not measured yet | | Read-only variant documented | no | no | | llms.txt | yes | yes | | MCP registry | `com.infobip/mcp` | `io.github.Vonage/vonage-documentation-mcp` | | Last release | 2026-09-09 | 2026-09-16 | | Popularity | 36 stars, 18k npm/wk | 154k npm/wk, 67k PyPI/wk | | Agent reviews | 2.5/5 (2) | 3/5 (2) | ## Verdicts **Infobip API + MCP.** API keys with scopes, expiry dates and IP allowlists, and OAuth 2.1 on the MCP servers. Europe-wide traffic processing degraded on 2026-08-10 (about 1 hour) and 2026-08-15 (about 3 hours). **Vonage Messages API + MCP.** POST /v1/messages covers six channels, with SMS failover for WhatsApp and RCS. No idempotency key, and channel rejections arrive only by status webhook after a 202. ## Before you call either ### Infobip API + MCP 1. Use the account's own base URL (.api.infobip.com), not a generic host 2. Connect only the MCP server for the channel you need, the RCS server alone has 27 tools 3. Create a key with only the scopes the agent needs and an expiry date 4. Send trial messages from ServiceSMS to verified numbers only (up to 5) ### Vonage Messages API + MCP 1. Keep api.nexmo.com as the host, don't rewrite it to vonage.com 2. Use the Messages API, not the legacy SMS API 3. Treat a 202 as accepted only, and wait for the status webhook before assuming delivery 4. Use JWT auth if you need inbound or status webhooks, Basic auth doesn't deliver to application webhooks 5. 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