BubblyPhone Agents
https://agents.bubblyphone.com/mcp ↗
Description
Make AI phone calls from any AI assistant. BubblyPhone's MCP server lets you manage AI-powered phone agents — book reservations, schedule appointments, set up customer support lines, or have your AI agent call anyone on your behalf. ## Features - **Make AI phone calls** — Initiate outbound calls with AI agents (Gemini, GPT) that handle the conversation - **Manage phone numbers** — Search, purchase, and configure numbers in 30+ countries - **Configure AI agents** — Set system prompts, choose AI models, select voices - **Monitor calls** — View call events, transcripts, and recordings - **Track billing** — Check balance, usage, and transaction history - **Mid-call control** — Inject context, transfer calls, or hang up ## 20 Tools `make_call` · `list_calls` · `get_call` · `hangup_call` · `transfer_call` · `inject_context` · `get_call_transcript` · `get_call_events` · `search_phone_numbers` · `list_phone_numbers` · `buy_phone_number` · `get_phone_number` · `update_phone_number` · `get_b
What our measurements say
BubblyPhone Agents is a remote MCP server published at agents.bubblyphone.com. It has been probed 25 times since 9/10/2026. It answered in 25 of them (100.0%), a near-uninterrupted record. Median response time is 362 ms, placing it among the faster endpoints. Its tool list could not be read; the server is closed to direct calls. It answers direct calls with an authentication wall.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Agent readability score
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| Run | Era | Modern | ms | Legacy | ms | Versions |
|---|---|---|---|---|---|---|
| 2026-09-13 01:33:33 | Auth-gated | 401 | 307 | 401 | 306 | — |
| 2026-09-12 23:31:36 | Auth-gated | 401 | 444 | 401 | 433 | — |
| 2026-09-12 21:29:15 | Auth-gated | 401 | 287 | 401 | 285 | — |
| 2026-09-12 19:27:29 | Auth-gated | 401 | 323 | 401 | 318 | — |
| 2026-09-12 17:24:09 | Auth-gated | 401 | 365 | 401 | 363 | — |
| 2026-09-12 15:21:42 | Auth-gated | 401 | 363 | 401 | 368 | — |
| 2026-09-12 13:29:16 | Auth-gated | 401 | 488 | 401 | 501 | — |
| 2026-09-12 11:39:06 | Auth-gated | 401 | 260 | 401 | 256 | — |
| 2026-09-12 09:47:15 | Auth-gated | 401 | 399 | 401 | 390 | — |
| 2026-09-12 07:55:23 | Auth-gated | 401 | 275 | 401 | 272 | — |
Availability history
Each block is one measurement round. Green: working response. Amber: responded but the server was returning errors (5xx). Red: no response at all.
Era history
Each cell is one probe run. Faded cells are incomplete probes — one leg did not answer, so the era is inconclusive.
Response time history
The two probe legs separately: modern server/discover and legacy initialize.
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Auth-gated
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