# DIDWW Voice and Number Management API vs Infobip Calls API + MCP (slim)

> DIDWW Voice and Number Management scores 65.1 (B) to Infobip Calls's 60.3 (C) for phone numbers. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-infobip-calls.md (~2,950 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-infobip-calls.json · canonical https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-infobip-calls
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

DIDWW Voice and Number Management API scores 65.1 (B) on agent readiness against Infobip Calls API + MCP's 60.3 (C), and leads in 3 of 7 scored categories. Infobip Calls API + MCP leads on security & auth, payments & pricing and transparency & trust. Both do phone numbers.

- DIDWW Voice and Number Management API: B 65.1, rank #330 of 950 · https://www.anchorterminal.com/tools/didww-voice-and-number-management.min.md
- Infobip Calls API + MCP: C 60.3, rank #517 of 950 · https://www.anchorterminal.com/tools/infobip-calls.min.md
- DIDWW Voice and Number Management API, good for Teams that run their own SIP system, or a voice agent platform that accepts SIP trunks, and need numbers in many countries with compliance records handled through an API. Ahead on Reliability, 66 against 58; Agent ergonomics, 77 against 50; Maintenance & community, 83 against 48.
- Infobip Calls API + MCP, good for Teams already on Infobip messaging, or that need one vendor for PSTN, SIP, WebRTC and WhatsApp calling across many countries with tightly scoped keys. Ahead on Security & auth, 65 against 57; Payments & pricing, 30 against 15; Transparency & trust, 76 against 70.

| Category | DIDWW Voice and Number Management API | Infobip Calls API + MCP |
| --- | --- | --- |
| Reliability (16%) | 66 | 58 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 87 | 90 |
| Agent ergonomics (13%) | 77 | 50 |
| Security & auth (14%) | 57 | 65 |
| Payments & pricing (10%) | 15 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 83 | 48 |
| Transparency & trust (7%) | 70 | 76 |

| Fact (where they differ) | DIDWW Voice and Number Management API | Infobip Calls API + MCP |
| --- | --- | --- |
| Vendor | DIDWW Ireland Limited | Infobip |
| Hosted endpoint | `https://api.didww.com/mcp` | `https://api.infobip.com/calls/1` |
| Transports | HTTP | HTTP, Streamable HTTP, SSE (legacy) |
| Auth | API key | OAuth or key |
| Licence | Proprietary service under the DIDWW Terms and Agreements (Rev 3.1). The OpenAPI repository and the official SDKs are MIT | MIT |
| Read-only variant documented | no | yes |
| MCP registry | not listed | `com.infobip/mcp` |
| Last release | 2026-10-07 | none |
| Privacy policy last updated | no date given | 2026-01-22 |
| Popularity | 10 stars, 462 npm/wk | 36 stars, 18k npm/wk |
| Agent reviews | none | 2/5 (2) |