{"generated_at":"2026-10-14T20:07:22+00:00","item":{"added_at":"2026-08-21","analysis_method":"independent_manual_review_2026-10-10","assessment_status":"provisional","auth_posture":"auth_required","category":"Web Connector","confidence":"medium","description":"Search shared inboxes and prepare customer replies in Missive. Read conversations across channels, look up contacts or canned responses, and compose signed drafts. Your team reviews drafts; delivery requires approval and can be disabled entirely.","did":"dd8d8315-4cf0-482d-83d2-0606e4d2a665","documentation_url":"https://missiveapp.com/docs/ai/mcp/server","editorial_description":{"extended_description":"Inspect or change labels and work with calendars or calendar events. Search mailboxes, teams, and conversation history to identify unanswered messages or recurring support topics.","schema_version":1,"summary":"Search shared inboxes and prepare customer replies in Missive.\nRead conversations across channels, look up contacts or canned responses, and compose signed drafts.\nYour team reviews drafts; delivery requires approval and can be disabled entirely."},"homepage_url":"","icon":"","id":"dd8d8315-4cf0-482d-83d2-0606e4d2a665","installs":0,"last_scanned":"","license":"","long_description":"Inspect or change labels and work with calendars or calendar events. Search mailboxes, teams, and conversation history to identify unanswered messages or recurring support topics.","manual_assessment":"medium","manual_review":{"all_findings":[{"evidence":"The connector stages drafts and manages collaborative mailbox/calendar state.","reasoning":"These are material account writes.","risk_type":"data_modification","severity":"medium","title":"Drafts, labels and calendar events can be changed","triggering_tools_or_skills":["compose_draft","change_labels","manage_calendar_events"]},{"evidence":"Declared tools access sensitive shared-inbox data.","reasoning":"The data is private even where delivery is separated.","risk_type":"private_data_read","severity":"low","title":"Email, WhatsApp, SMS, contacts and calendars are readable","triggering_tools_or_skills":["search_conversations","get_conversation_entries","get_contact_details","get_calendar_events"]},{"evidence":"External correspondents supply message text.","reasoning":"Messages can contain prompt injection.","risk_type":"prompt_injection_exposure","severity":"low","title":"Inbound messages enter model context","triggering_tools_or_skills":["get_conversation_entries","search_conversations"]},{"evidence":"The connector runs at https://mcp.missiveapp.com/ without a pinned server implementation in the packet.","reasoning":"The implementation can change independently, so runtime verification and change monitoring remain necessary.","risk_type":"provenance_uncertainty","severity":"low","title":"Missive is a mutable hosted service","triggering_tools_or_skills":[]}],"assessment_status":"provisional","auth_and_scopes":"OAuth follows existing team/mailbox permissions; sending can be disabled and no delivery tool appears in the declared inventory.","blocked_missing_evidence":null,"confidence":"medium","displayed_risk":"medium","evidence_completeness":"partial","manual_overall_risk":"medium","official_sources":[{"accessed_at":"2026-10-10T20:24:37Z","url_or_path":"plutosecurity/plutonium@b749c8dc43536c794409be9805edd48063f045e2:app/data/conn/claudesec/dd8d8315-4cf0-482d-83d2-0606e4d2a665.json","what_it_proves":"Candidate PR #125 record identity (name \"Missive\", publisher, type web_connector) and 14 stored tool names; no tool descriptions stored"},{"accessed_at":"2026-09-22T10:46:07Z","url_or_path":"https://api.anthropic.com/api/directory/servers?verified_tier=anthropic,partner,community (snapshot claude-directory-all-tiers-2026-09-22.json)","what_it_proves":"Official Claude Directory listing https://claude.ai/directory/dd8d8315-4cf0-482d-83d2-0606e4d2a665: complete tool_names inventory (14 tools), remote streamable-http endpoint https://mcp.missiveapp.com/, auth_posture auth_required, directory tier community"}],"primary_reason":"Missive creates drafts and modifies mailbox/calendar state, but the declared tool set cannot deliver messages.","provisional_risk":null,"publication_recommendation":"accept","requires_runtime_verification":true,"review_key":"claude:dd8d8315-4cf0-482d-83d2-0606e4d2a665","reviewed_at":"2026-10-10","reviewer_notes":"Reviewed all 14 tools. The description explicitly separates composing from delivery; no send tool was inferred.","risk_domains":{"arbitrary_network_access":"false","authz_ambiguity":"false","browser_control":"false","credential_or_admin_actions":"false","deletes_data":"false","deployment_or_infrastructure":"false","dynamic_hidden_actions":"false","filesystem_or_repo_access":"false","forwards_data_to_third_party":"true","modifies_data":"true","persistent_credentials":"true","prompt_injection_exposure":"true","provenance_uncertainty":"true","reads_private_data":"true","runs_code_or_queries":"false","sends_messages_as_user":"false","spends_or_moves_money":"false"},"tools_or_skills_reviewed":14,"tools_or_skills_total":14},"name":"Missive","needs_runtime_verification":true,"plutonium_url":"https://plutonium.pluto.security/detail.html?planet=claudesec&did=dd8d8315-4cf0-482d-83d2-0606e4d2a665&utm_source=plutonium_analysis_skill&utm_medium=claude_skill&utm_campaign=connector_risk_assessment","privacy_policy_url":"https://missiveapp.com/privacy","provisional_risk":null,"publication_recommendation":"accept","publisher":"Missive","publisher_url":"https://missiveapp.com/","remote_url":"https://mcp.missiveapp.com/","repository_url":"","risk":"medium","risk_severity":"medium","security_risks":[{"description":"This connector can create, update, configure, or otherwise change connected resources. Review findings: These are material account writes.","evidence":"Drafts, labels and calendar events can be changed: The connector stages drafts and manages collaborative mailbox/calendar state.","manual_risk_type":"data_modification","remediation":{"block_tool_categories":["state_change"],"steps":["Use a test account or sandbox before allowing changes to production data.","Grant only the write permissions required for the intended workflow.","Require human confirmation for consequential state changes."]},"risk_type":"modifies_data","severity":"medium","title":"Drafts, labels and calendar events can be changed","triggering_tools":["compose_draft","change_labels","manage_calendar_events"]},{"description":"This connector can read information available to the connected account and return it to the AI. Review findings: The data is private even where delivery is separated.","evidence":"Email, WhatsApp, SMS, contacts and calendars are readable: Declared tools access sensitive shared-inbox data.","manual_risk_type":"private_data_read","remediation":{"block_tool_categories":["data_exfiltration"],"steps":["Use a least-privilege account limited to the information required by the workflow.","Restrict folders, projects, tenants, and other data scopes wherever the provider allows it.","Review access logs for unexpected reads or bulk retrieval."]},"risk_type":"reads_private_data","severity":"low","title":"Email, WhatsApp, SMS, contacts and calendars are readable","triggering_tools":["search_conversations","get_conversation_entries","get_contact_details","get_calendar_events"]}],"signature_status":"unknown","source_code_reviewed":false,"support_url":"support@missiveapp.com","tags":["accesses_calendar","accesses_messaging","modifies_data","network_access","oauth_required","reads_private_data","web_connector"],"tools":[{"description":"","name":"change_labels","risk":{"category":"state_change","level":"medium","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can create, update, configure, or otherwise change connected resources. Review findings: These are material account writes."}},{"description":"","name":"compose_draft","risk":{"category":"state_change","level":"medium","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can create, update, configure, or otherwise change connected resources. Review findings: These are material account writes."}},{"description":"","name":"get_calendar_events"},{"description":"","name":"get_contact_details"},{"description":"","name":"get_conversation_entries"},{"description":"","name":"get_conversations"},{"description":"","name":"get_search_results"},{"description":"","name":"list_calendars"},{"description":"","name":"manage_calendar_events","risk":{"category":"state_change","level":"medium","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can create, update, configure, or otherwise change connected resources. Review findings: These are material account writes."}},{"description":"","name":"search_conversations"},{"description":"","name":"search_mailboxes"},{"description":"","name":"search_responses"},{"description":"","name":"search_shared_labels"},{"description":"","name":"search_teams"}],"tools_count":14,"transport":"streamable-http","type":"web_connector","url":"https://claude.ai/directory/dd8d8315-4cf0-482d-83d2-0606e4d2a665","uuid":"5301fb7f-0fe4-5fd3-8a9b-599d3f2e1400","verification_tier":"community","version":""},"query_key":"missive missive","schema_version":1,"status":"match"}