Enables AI assistants to send real faxes through the FaxDrop API. Provides safeguards including rate limiting, dry-run mode, and audit logging for secure fax operations.
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process.env. You'll be asked to provide them before it can run.FAXDROP_API_BASE_URLFAXDROP_API_KEY— The server reads from the environment. Get your key at [faxdrop.com/account](https://faxdrop.com/account) (Developer API → Generate Key). Keys look like fd_live_<32 hex>.FAXDROP_MCP_ALLOWED_COUNTRIES— Allowed countries =... US,CA,PR,GU,VI,AS,MP ISO-3166-1 alpha-2 allow-list (US/CA + US territories).FAXDROP_MCP_ALLOWED_TYPES— Allowed types =... FIXED_LINE,FIXED_LINE_OR_MOBILE,VOIP,TOLL_FREE libphonenumber NumberType allow-list.FAXDROP_MCP_ALLOW_NON_FAXDROP_HOSTFAXDROP_MCP_AUDIT_LOG— Dry-run + audit log — FAXDROP_MCP_DRY_RUN=true to test prompts without sending; =/abs/path for a JSONL trail (mode 0o600).FAXDROP_MCP_DRY_RUN— Dry-run + audit log — =true to test prompts without sending; FAXDROP_MCP_AUDIT_LOG=/abs/path for a JSONL trail (mode 0o600).FAXDROP_MCP_NUMBER_GATE— Number gate =open\pairing\closed pairing pairing requires HITL approval via faxdrop_pair_number before a new number can be faxed. closed disables runtime pairing (paired.json edited out-of-band).FAXDROP_MCP_SOURCEMAPFAXDROP_MCP_STATE_DIR— State directory =/abs/path ~/.faxdrop-mcp/ (mode 0o700) Where paired.json lives (mode 0o600, atomic write).FAXDROP_MCP_WORK_DIR— Outbox jail =/abs/path ~/FaxOutbox/ (auto-created mode 0o700) Every filePath must live inside this directory after realpath canonicalization. Symlinks to outside the outbox are rejected.[](https://m8ven.ai/mcp/klodr-faxdrop-mcp-1sbfj9)