# Exotel Voice API + MCP vs Infobip Calls API + MCP

> Infobip Calls API + MCP has a score of 60.5 (C) against Exotel Voice API + MCP's 39.8 (E). Both do voice calls. The largest gap is maintenance & community, 43 points. Category scores, facts, verdicts and agent notes side by side.

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- Updated: 2026-10-04

Infobip Calls API + MCP has a score of 60.5 (C) against Exotel Voice API + MCP's 39.8 (E). Both do voice calls. The largest gap is maintenance & community, 43 points.

- Exotel Voice API + MCP: grade E, 39.8/100, rank #424 of 452. Markdown https://www.anchorterminal.com/tools/exotel-voice.md · JSON https://www.anchorterminal.com/api/v1/tools/exotel-voice.json
- Infobip Calls API + MCP: grade C, 60.5/100, rank #246 of 452. Markdown https://www.anchorterminal.com/tools/infobip-calls.md · JSON https://www.anchorterminal.com/api/v1/tools/infobip-calls.json

## Which one, for what

Pick Exotel Voice API + MCP for nothing in particular (no category where it leads by five points or more).

Pick Infobip Calls API + MCP for reliability (+8), schema & documentation (+42), agent ergonomics (+10), security & auth (+25), payments & pricing (+10), maintenance & community (+43), transparency & trust (+15).

## Score by category

| Category | Weight | Exotel Voice API + MCP | Infobip Calls API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 50 | 58 | Infobip Calls API + MCP +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 48 | 90 | Infobip Calls API + MCP +42 |
| Agent ergonomics | 13% (16.2 this run) | 40 | 50 | Infobip Calls API + MCP +10 |
| Security & auth | 14% (17.5 this run) | 40 | 65 | Infobip Calls API + MCP +25 |
| Payments & pricing | 10% (12.5 this run) | 20 | 30 | Infobip Calls API + MCP +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 5 | 48 | Infobip Calls API + MCP +43 |
| Transparency & trust | 7% (8.8 this run) | 63 | 78 | Infobip Calls API + MCP +15 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **39.8 · E** | **60.5 · C** | |

## Facts side by side

| Fact | Exotel Voice API + MCP | Infobip Calls API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Exotel | Infobip |
| Hosted endpoint | `https://api.exotel.com/v1` | `https://api.infobip.com/calls/1` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, SSE (legacy) |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | MIT | MIT |
| Tools exposed | 62 | none |
| 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 | yes |
| llms.txt | no | yes |
| MCP registry | not listed | `com.infobip/mcp` |
| Last release | none | none |
| Popularity | 5 stars | 36 stars, 18k npm/wk |
| Agent reviews | 2/5 (2) | 2/5 (2) |

## Verdicts

**Exotel Voice API + MCP.** Local Indian numbers and DLT and TRAI handling. Per-minute rates and plan prices not published.

**Infobip Calls API + MCP.** API keys support call scopes, expiry and IP allowlists, with OAuth also available. US outbound calls cost about $0.067 a minute.

## Before you call either

### Exotel Voice API + MCP

1. Use api.in.exotel.com for India-hosted accounts and api.exotel.com for Singapore-hosted ones
2. Pass StreamUrl on Calls/connect for a quick outbound voice-agent call
3. Whitelist test numbers before calling on a trial account
4. Pass confirm=true only after a person approves a destructive MCP tool call

### Infobip Calls API + MCP

1. Create a calls configuration and a VOICE_VIDEO subscription with your webhook before calling POST /calls/1/calls
2. Use your account's own base URL, not api.infobip.com
3. Give a monitoring agent a key with only `voice:logs:read` and `calls:recording:read`
4. For a quick spoken notification, the Voice MCP is simpler than the Calls API

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