WhatsApp MCP Stream
Enables programmatic WhatsApp automation through MCP, including sending messages, managing chats and contacts, searching conversation history, and exchanging media files.
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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.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
Axios Node HTTP adapter can use an inherited proxy after interceptor config cloning
Multer vulnerable to Denial of Service via deeply nested field names
Axios: Excessive recursion in formDataToJSON can cause denial of service
Axios: Nested axios option objects can consume polluted prototype values
Axios: NO_PROXY bypass for 0.0.0.0 local addresses in axios
AUTO_DOWNLOAD_MAX_MBAUTO_DOWNLOAD_MEDIAAUTO_SELECT_CONTACTBAILEYS_LOG_LEVELDB_PATHSQLite database path for chats/messages persistence.FFMPEG_PATHLOG_LEVELMCP_HTTP_ENABLE_JSON_RESPONSEUse direct JSON responses for Streamable HTTP POST requests by default. Set to 0 to force the older SSE-style POST response handling.MEDIA_DIRSettings can be edited in the admin UI and are persisted to SETTINGS_PATH (defaults to /settings.json).MEDIA_PUBLIC_BASE_URLPUBLIC_BASE_URLREQUIRE_UPLOAD_TOKENSESSION_DIRSQLite database path for chats/messages persistence.SETTINGS_PATHSettings can be edited in the admin UI and are persisted to (defaults to MEDIA_DIR/settings.json).TRANSPORTUPLOAD_ENABLEDUPLOAD_MAX_FILESUPLOAD_MAX_MBUPLOAD_TOKENWA_AUTO_DOWNLOAD_CONCURRENCYMax parallel auto-downloads. Auto-download runs through an in-process bounded queue so a burst of inbound media cannot saturate the I/O.WA_AUTO_DOWNLOAD_QUEUE_MAXMax queued auto-download jobs. Excess is dropped FIFO (oldest first) with a warning log; recent messages stay prioritised.WA_DISCONNECT_RECOVERY_DELAY_MSHow long to wait after a socket close before the disconnect watchdog forces reconnect/restart.WA_DISCONNECT_RECOVERY_RESTART_CODESComma-separated disconnect status codes that should escalate straight to an internal restart watchdog.WA_EVENT_LOGEnable detailed WhatsApp event logs.WA_EVENT_STREAMWrite raw Baileys event stream to a file for deep debugging.WA_EVENT_STREAM_PATHFile path for the event stream log.WA_IDEMPOTENCY_TTL_MSHow long completed send_message idempotency records are retained in SQLite for safe retries.WA_INITIALIZE_TIMEOUT_MSRace the WhatsApp client initialise against this deadline; set to 0 to disable. Throws on timeout so recovery can retry instead of hanging.WA_MESSAGE_INDEX_MAXMax in-memory entries for message index (jid:id -> raw message).WA_MESSAGE_KEY_INDEX_MAXMax in-memory entries for message key index (id -> raw message).WA_READINESS_GRACE_MSGrace period during recovery/disconnect before /healthz turns unhealthy.WA_RESYNC_RECONNECTEnable reconnect safety net after force resync.WA_RESYNC_RECONNECT_DELAY_MSDelay before reconnect after force resync (ms).WA_SEND_DEDUP_WINDOW_MSSuppress exact duplicate send_message requests to the same JID within this window.WA_SYNC_RECOVERY_COOLDOWN_MSMinimum delay between automatic app-state recoveries.WA_SYNC_RECOVERY_WINDOW_MSTime window used to count repeated app-state corruption failures.WA_SYNC_SOFT_RECOVERY_LIMITNumber of soft recoveries before escalating to an internal restart.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
29/29 tools missing one or more hints — ping (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_qr_code (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); check_auth_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +26 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.
Destructive tools are labelled
1 tool perform destructive updates without destructiveHint — send_media deletes at line 183 (fs.unlinkSync(tempFilePath))
Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.
Tool inputs are validated
Only 9/29 tool handlers declare input schemas (31%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool test coverage
Only 3/29 tools referenced in tests (10%)
Write tests that reference each tool by name so every tool has at least one test.
Tests pass
npm test failed — tests do not pass
Make sure npm test runs cleanly. Common cause: missing build step or missing env vars.
Production dependencies are patched
0 critical, 2 high severity in production deps — axios@1.16.1 (high), multer@2.1.1 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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