Ringback (mohitbadwal/ringback) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 12 tools. No publisher has claimed this listing.

Emerging

74/100

10 days ago

Ringback

Item: Ringback
Rating: 74
Author: M8ven

Let your AI agent call your phone and talk to you — MCP servers for live, interruptible voice calls + tiered alerts, using free self-hosted pieces (pjsua2 + whisper.cpp + Linphone). No paid telephony, no extra API key.

→ mohitbadwal/ringback · listed on glama

Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

Code Verified⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

⚡ Connect GitHub → continuous verification on every push why connect →

Who stands behind it

mohitbadwal

Source: Glama

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

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Install from

Glamanot scored here

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings

🚨

Secret credentials may flow to a network call

2 flows detected: NTFY_TOKEN, PUSHOVER_TOKEN. We can’t prove the destination matches the brand the credential belongs to.

🔐

You'll be asked for 4 credentials: RINGBACK_CHANNEL_TOKEN, NTFY_TOKEN, PUSHOVER_TOKEN, VOICE_SIP_PASS

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// environment variables

To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.

configRINGBACK_CHANNEL_PORT

🔐 secretRINGBACK_CHANNEL_TOKEN

configRINGBACK_REPO

configALERT_CHANNELalert_me(message, severity, title) with severity = info warn critical. Channels via (comma list of ntfy, pushover, call):

configNTFY_URL

🔐 secretNTFY_TOKEN

🔐 secretPUSHOVER_TOKEN

configPUSHOVER_USER

configSIP_BARESIP_BIN

configSIP_CONFIG_DIR

configSIP_CALLEE

configSIP_RING_SECONDS

configCALL_MIN_SEVERITY

configALERT_MAX_PER_WINDOW

configALERT_WINDOW_SEC

configPUSHOVER_RETRY

configPUSHOVER_EXPIRE

configOPENSSL_PREFIXOpenSSL libs (macOS; auto-detected)

configPJPROJECT_DIRpjsua2 build dir (auto-detected)

configPYTHON_BINPython that has pjsua2 (auto-detected)

configPYTHONPATH

configVOICE_AEC_DELAY_MS

configFFMPEG_BIN

configVOICE_PIPER_BIN

configRINGBACK_PRESENCEOverride watchdog idle/presence: present or absent (for Wayland/headless)

configVOICE_TTSTTS engine: auto (Piper if installed, else OS voice) · piper · say · espeak · sapi

configVOICE_TTS_CMDCustom TTS command template with {text}/{out} (overrides VOICE_TTS)

configVOICE_SIP_IDYour SIP address, e.g. sip:you@sip.linphone.org

configVOICE_SIP_CALLEEAddress to call (normally yourself)

configVOICE_SIP_USERSIP username (the part before @)

🔐 secretVOICE_SIP_PASSYour SIP password

configVOICE_SIP_PROXYSIP registrar/proxy

configVOICE_DISPLAY_NAME

configWHISPER_BIN

configWHISPER_MODELSTT model: base.en (fast) · small.en (default) · medium.en (accurate)

configVOICE_BARGE_RMS

configVOICE_LISTEN_RMS

configVOICE_NOISE_FACTOR

configVOICE_RMS_CAP

configVOICE_BARGE_RMS_MIN

configVOICE_LISTEN_NOISE_FACTOR

configVOICE_BARGE_DEBOUNCE

configVOICE_LISTEN_DEBOUNCE

configVOICE_HALF_DUPLEX

configVOICE_EARLY_BARGE_SEC

configVOICE_POST_SPEAK_DRAIN

configVOICE_START_TIMEOUT

configVOICE_END_SILENCE

configVOICE_LISTEN_END_RMS

configVOICE_NO_SPEECH_SEC

configWHISPER_SERVER_BIN

configWHISPER_SERVER_MODEL

configWHISPER_SERVER_HOST

configWHISPER_SERVER_PORT

configWHISPER_SERVER_IDLE_SEC

configVOICE_DEBUG

configVOICE_DEBUG_KEEP_WAV

configVOICE_DEBUG_WAV_DIR

configVOICE_LOG_LEVEL

configVOICE_CONSOLE_LEVEL

configVOICE_LOG_FILE

configVOICE_STUN

configVOICE_NULL_AUDIOForce pjsua2 null audio device (auto = on except macOS; 1/0 to force)

configVOICE_RTP_PORT

configVOICE_TIMING

configRINGBACK_AWAY_IDLE_SEC

configRINGBACK_HOOK_DRYRUN

configRINGBACK_SAY_WAIT

// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

12/12 tools missing one or more hints — ask_user_by_phone (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); say (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); alert_me (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +9 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tool test coverage

Only 3/12 tools referenced in tests (25%)

Write tests that reference each tool by name so every tool has at least one test.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail

The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.

// improvement guidance — verified publishers only

We have 3 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/mohitbadwal/ringback)](https://m8ven.ai/mcp/mohitbadwal/ringback)

Shows your grade and updates automatically. Prefer no grade? Append ?variant=verified to the badge URL.

commit: dfadf47ef5f106079cb11d48daaa4da39825e140

code hash: 114654f79e6a75e9ab580bdbeb3626f45707f90f2f542d3d9e4069c214ca24d6

verified: 9/2/2026, 9:10:37 PM

view raw JSON →

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