Leaderboard/BubblyPhone Agents
MCP ServerScored via MCP protocol probing: initialize handshake, tools/list conformance, and ping + tool invocation performance.

BubblyPhone Agents

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_balance` · `get_usage` · `list_transactions` · `list_models` · `lookup_rate` · `get_country_rates` · `get_account`

55/100
Operational Score
Score Breakdown
Availability30/30
Conformance10/30
Performance15/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
184.8ms
Conformance
Fail
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 401 in 181ms
ConformanceNot tested
MCP initialize handshake + tools/list
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 184ms, task completion: 0%
Recent Probe Results
TimestampStatusLatencyConformance
Apr 10, 2026success181.7msPass
Apr 10, 2026success234.2msPass
Apr 10, 2026success184.8msPass
Source Registries
smithery
First Seen
Apr 10, 2026
Last Seen
Apr 10, 2026
Last Probed
Apr 10, 2026
BubblyPhone Agents — Chiark Agent Quality Index