{"generated_at":"2026-10-14T20:07:22+00:00","item":{"added_at":"2026-09-02","analysis_method":"independent_manual_review_2026-10-10","assessment_status":"provisional","auth_posture":"auth_required","category":"Web Connector","confidence":"medium","description":"Manage email marketing and reporting in Mailercloud. Maintain campaigns, contacts, lists, templates, tags, and webhooks. Schedule campaigns, send test or transactional emails, and analyze engagement or delivery.","did":"e3008776-fc44-49ba-bdc4-dfa25b0ef7f1","documentation_url":"https://help.mailercloud.com/","editorial_description":{"extended_description":"Audit drafts, compare campaign performance, inspect account health, and review inbox tracking or domain reports. Tools also retrieve automation details, senders, segments, webforms, and reply emails.","schema_version":1,"summary":"Manage email marketing and reporting in Mailercloud.\nMaintain campaigns, contacts, lists, templates, tags, and webhooks.\nSchedule campaigns, send test or transactional emails, and analyze engagement or delivery."},"homepage_url":"","icon":"https://www.mailercloud.com/favicon.ico","id":"e3008776-fc44-49ba-bdc4-dfa25b0ef7f1","installs":0,"last_scanned":"","license":"","long_description":"Audit drafts, compare campaign performance, inspect account health, and review inbox tracking or domain reports. Tools also retrieve automation details, senders, segments, webforms, and reply emails.","manual_assessment":"high","manual_review":{"all_findings":[{"evidence":"Declared tools deliver real email.","reasoning":"This communicates externally as configured senders.","risk_type":"messaging_as_user","severity":"high","title":"Campaign, test and transactional email can be sent/scheduled","triggering_tools_or_skills":["schedule_campaign","send_test_email","send_transactional_email"]},{"evidence":"Explicit destructive tools remove audience/integration data.","reasoning":"These are material deletions.","risk_type":"data_deletion","severity":"high","title":"Contacts, lists and webhooks can be deleted","triggering_tools_or_skills":["delete_contact","delete_list","delete_webhook"]},{"evidence":"Live integration/automation state is changed.","reasoning":"This affects production messaging flows.","risk_type":"deployment_infrastructure","severity":"high","title":"Webhooks and automations can be configured","triggering_tools_or_skills":["create_webhook","toggle_webhook","update_webhook","get_automation"]},{"evidence":"External recipient content is returned.","reasoning":"It may contain prompt injection.","risk_type":"prompt_injection_exposure","severity":"low","title":"Contact replies and campaign data enter model context","triggering_tools_or_skills":["list_reply_emails","get_contact","analyze_campaign"]},{"evidence":"The connector runs at https://mcp.mailercloud.com/mcp 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":"Mailercloud is a mutable hosted service","triggering_tools_or_skills":[]}],"assessment_status":"provisional","auth_and_scopes":"OAuth connects a Mailercloud workspace; exact sender/domain roles and send confirmation controls are not documented.","blocked_missing_evidence":null,"confidence":"medium","displayed_risk":"high","evidence_completeness":"partial","manual_overall_risk":"high","official_sources":[{"accessed_at":"2026-10-10T20:24:37Z","url_or_path":"plutosecurity/plutonium@b749c8dc43536c794409be9805edd48063f045e2:app/data/conn/claudesec/e3008776-fc44-49ba-bdc4-dfa25b0ef7f1.json","what_it_proves":"Candidate PR #125 record identity (name \"Mailercloud\", publisher, type web_connector) and 47 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/e3008776-fc44-49ba-bdc4-dfa25b0ef7f1: complete tool_names inventory (47 tools), remote streamable-http endpoint https://mcp.mailercloud.com/mcp, auth_posture auth_required, directory tier community"}],"primary_reason":"Mailercloud sends email and can delete audiences or alter live webhooks.","provisional_risk":null,"publication_recommendation":"accept","requires_runtime_verification":true,"review_key":"claude:e3008776-fc44-49ba-bdc4-dfa25b0ef7f1","reviewed_at":"2026-10-10","reviewer_notes":"Reviewed all 47 tools. Campaign sending beyond schedule_campaign may be implicit and should be runtime-verified.","risk_domains":{"arbitrary_network_access":"false","authz_ambiguity":"false","browser_control":"false","credential_or_admin_actions":"false","deletes_data":"true","deployment_or_infrastructure":"true","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":"true","spends_or_moves_money":"false"},"tools_or_skills_reviewed":47,"tools_or_skills_total":47},"name":"Mailercloud","needs_runtime_verification":true,"plutonium_url":"https://plutonium.pluto.security/detail.html?planet=claudesec&did=e3008776-fc44-49ba-bdc4-dfa25b0ef7f1&utm_source=plutonium_analysis_skill&utm_medium=claude_skill&utm_campaign=connector_risk_assessment","privacy_policy_url":"https://mailercloud.com/privacy-policy","provisional_risk":null,"publication_recommendation":"accept","publisher":"Mailercloud","publisher_url":"https://mailercloud.com/","remote_url":"https://mcp.mailercloud.com/mcp","repository_url":"","risk":"high","risk_severity":"high","security_risks":[{"description":"This connector can publish or send messages and content using the connected identity. Review findings: This communicates externally as configured senders.","evidence":"Campaign, test and transactional email can be sent/scheduled: Declared tools deliver real email.","manual_risk_type":"messaging_as_user","remediation":{"block_tool_categories":["sends_externally"],"steps":["Require review before messages, posts, or publications are sent.","Restrict delivery to test or internal recipients where possible."]},"risk_type":"sends_messages_as_you","severity":"high","title":"Campaign, test and transactional email can be sent/scheduled","triggering_tools":["schedule_campaign","send_test_email","send_transactional_email"]},{"description":"This connector can permanently remove data or resources. 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Review findings: This affects production messaging flows."}},{"description":"","name":"delete_contact","risk":{"category":"destructive","level":"high","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can permanently remove data or resources. Review findings: These are material deletions."}},{"description":"","name":"delete_list","risk":{"category":"destructive","level":"high","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can permanently remove data or resources. Review findings: These are material deletions."}},{"description":"","name":"delete_webhook","risk":{"category":"destructive","level":"high","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can permanently remove data or resources. Review findings: These are material deletions."}},{"description":"","name":"engagement_funnel"},{"description":"","name":"get_account_overview"},{"description":"","name":"get_automation","risk":{"category":"code_execution","level":"high","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can deploy code or change infrastructure and production environments. Review findings: This affects production messaging flows."}},{"description":"","name":"get_best_practices"},{"description":"","name":"get_campaign"},{"description":"","name":"get_campaign_domain_report"},{"description":"","name":"get_contact"},{"description":"","name":"get_inbox_tracking"},{"description":"","name":"get_list_details"},{"description":"","name":"get_template"},{"description":"","name":"get_webhook"},{"description":"","name":"list_campaigns"},{"description":"","name":"list_contact_lists"},{"description":"","name":"list_contacts"},{"description":"","name":"list_custom_fields"},{"description":"","name":"list_reply_emails"},{"description":"","name":"list_segments"},{"description":"","name":"list_senders"},{"description":"","name":"list_tags"},{"description":"","name":"list_template_categories"},{"description":"","name":"list_webforms"},{"description":"","name":"list_webhooks"},{"description":"","name":"schedule_campaign","risk":{"category":"sends_externally","level":"high","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can publish or send messages and content using the connected identity. Review findings: This communicates externally as configured senders."}},{"description":"","name":"send_test_email","risk":{"category":"sends_externally","level":"high","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can publish or send messages and content using the connected identity. Review findings: This communicates externally as configured senders."}},{"description":"","name":"send_transactional_email","risk":{"category":"sends_externally","level":"high","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can publish or send messages and content using the connected identity. Review findings: This communicates externally as configured senders."}},{"description":"","name":"toggle_webhook","risk":{"category":"code_execution","level":"high","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can deploy code or change infrastructure and production environments. Review findings: This affects production messaging flows."}},{"description":"","name":"update_campaign"},{"description":"","name":"update_contact"},{"description":"","name":"update_list"},{"description":"","name":"update_template"},{"description":"","name":"update_webhook","risk":{"category":"code_execution","level":"high","recommendation":"Follow the connector-level remediation and require approval for consequential actions.","why":"This connector can deploy code or change infrastructure and production environments. Review findings: This affects production messaging flows."}},{"description":"","name":"upsert_contact"}],"tools_count":47,"transport":"streamable-http","type":"web_connector","url":"https://claude.ai/directory/e3008776-fc44-49ba-bdc4-dfa25b0ef7f1","uuid":"087f08f6-6bdd-593c-bab3-fd84fafc18e4","verification_tier":"community","version":""},"query_key":"mailercloud mailercloud","schema_version":1,"status":"match"}