{"generated_at":"2026-10-14T20:07:22+00:00","item":{"added_at":"2026-08-19","analysis_method":"independent_manual_review_2026-10-10","assessment_status":"provisional","auth_posture":"auth_required","category":"Web Connector","confidence":"medium","description":"Postiz organizes social-media publishing through Claude. List connected channels, prepare posts, upload media from URLs, and schedule publication. Inspect scheduled content and social analytics through authenticated access.","did":"f3078b0b-d797-4ab9-99c4-70e2563d33bc","documentation_url":"https://docs.postiz.com/","editorial_description":{"extended_description":"Supported channels include X, LinkedIn, Instagram, Facebook, TikTok, Reddit, YouTube, Threads, Bluesky, and other connected services. Tools inspect channel schemas and posting settings.","schema_version":1,"summary":"Postiz organizes social-media publishing through Claude.\nList connected channels, prepare posts, upload media from URLs, and schedule publication.\nInspect scheduled content and social analytics through authenticated access."},"homepage_url":"","icon":"https://postiz.com/favicon.ico","id":"f3078b0b-d797-4ab9-99c4-70e2563d33bc","installs":0,"last_scanned":"","license":"","long_description":"Supported channels include X, LinkedIn, Instagram, Facebook, TikTok, Reddit, YouTube, Threads, Bluesky, and other connected services. Tools inspect channel schemas and posting settings.","manual_assessment":"high","manual_review":{"all_findings":[{"evidence":"The listing says Postiz manages publishing end-to-end and drafts/schedules content for X, LinkedIn, Instagram, Facebook, TikTok, Reddit, YouTube, Discord, Slack, Telegram, and more.","reasoning":"Scheduling or triggering content communicates as the authenticated social identities to public or group audiences.","risk_type":"messaging_as_user","severity":"high","title":"Social posts can be drafted and scheduled across many channels","triggering_tools_or_skills":["integrationSchedulePostTool","triggerTool"]},{"evidence":"uploadFromUrlTool imports external media into the publishing workflow.","reasoning":"The hosted service may fetch a user-selected URL, so private-network and redirect restrictions should be verified.","risk_type":"arbitrary_network_access","severity":"low","title":"Media can be uploaded from a URL","triggering_tools_or_skills":["uploadFromUrlTool"]},{"evidence":"The inventory includes generic integrationSchema, triggerTool, and postSettingsTool rather than enumerating platform-specific actions.","reasoning":"Runtime schemas must be compared with the stored inventory to detect action expansion or unexpected settings changes.","risk_type":"generic_gateway","severity":"low","title":"Schema and trigger tools have broad server-defined behavior","triggering_tools_or_skills":["integrationSchema","triggerTool","postSettingsTool"]}],"assessment_status":"provisional","auth_and_scopes":"Authentication connects Postiz and its linked social channels; per-network scopes and approval behavior are not stated.","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/f3078b0b-d797-4ab9-99c4-70e2563d33bc.json","what_it_proves":"Candidate PR #125 record identity (name \"Postiz\", publisher, type web_connector) and 8 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/f3078b0b-d797-4ab9-99c4-70e2563d33bc: complete tool_names inventory (8 tools), remote streamable-http endpoint https://mcp.postiz.com/mcp-oauth-claude, auth_posture auth_required, directory tier community"}],"primary_reason":"Postiz can schedule or trigger outbound content across connected social and messaging channels.","provisional_risk":null,"publication_recommendation":"accept","requires_runtime_verification":true,"review_key":"claude:f3078b0b-d797-4ab9-99c4-70e2563d33bc","reviewed_at":"2026-10-10","reviewer_notes":"Reviewed all eight visible tools; the generic schema/trigger surface and lack of delete semantics require runtime inspection.","risk_domains":{"arbitrary_network_access":"true","authz_ambiguity":"false","browser_control":"false","credential_or_admin_actions":"false","deletes_data":"false","deployment_or_infrastructure":"false","dynamic_hidden_actions":"true","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":8,"tools_or_skills_total":8},"name":"Postiz","needs_runtime_verification":true,"plutonium_url":"https://plutonium.pluto.security/detail.html?planet=claudesec&did=f3078b0b-d797-4ab9-99c4-70e2563d33bc&utm_source=plutonium_analysis_skill&utm_medium=claude_skill&utm_campaign=connector_risk_assessment","privacy_policy_url":"https://postiz.com/privacy-policy","provisional_risk":null,"publication_recommendation":"accept","publisher":"Postiz","publisher_url":"https://postiz.com/","remote_url":"https://mcp.postiz.com/mcp-oauth-claude","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: Scheduling or triggering content communicates as the authenticated social identities to public or group audiences.","evidence":"Social posts can be drafted and scheduled across many channels: The listing says Postiz manages publishing end-to-end and drafts/schedules content for X, LinkedIn, Instagram, Facebook, TikTok, Reddit, YouTube, Discord, Slack, Telegram, and more.","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":"Social posts can be drafted and scheduled across many channels","triggering_tools":["integrationSchedulePostTool","triggerTool"]},{"description":"This connector can send caller-provided data to an external service or publisher. Review findings: The hosted service may fetch a user-selected URL, so private-network and redirect restrictions should be verified.","evidence":"Media can be uploaded from a URL: uploadFromUrlTool imports external media into the publishing workflow.","manual_risk_type":"arbitrary_network_access","remediation":{"block_tool_categories":["sends_externally"],"steps":["Do not include secrets, regulated data, or customer information unless the destination is approved.","Review the recipient's retention and deletion policy before enabling the connector."]},"risk_type":"forwards_data_to_third_party","severity":"low","title":"Media can be uploaded from a URL","triggering_tools":["uploadFromUrlTool"]},{"description":"This connector can execute code, commands, queries, or dynamically selected actions. Review findings: Runtime schemas must be compared with the stored inventory to detect action expansion or unexpected settings changes.","evidence":"Schema and trigger tools have broad server-defined behavior: The inventory includes generic integrationSchema, triggerTool, and postSettingsTool rather than enumerating platform-specific actions.","manual_risk_type":"generic_gateway","remediation":{"block_tool_categories":["code_execution"],"steps":["Run only in a sandbox with least-privilege credentials and strict resource limits.","Disable generic execution gateways unless their reachable action set is fully understood.","Require approval before execution against production systems or sensitive data."]},"risk_type":"runs_code","severity":"low","title":"Schema and trigger tools have broad server-defined behavior","triggering_tools":["integrationSchema","triggerTool","postSettingsTool"]}],"signature_status":"unknown","source_code_reviewed":false,"support_url":"support@postiz.com","tags":["forwards_data_to_third_party","network_access","oauth_required","runs_code","sends_messages_as_you","web_connector"],"tools":[{"description":"","name":"groupList"},{"description":"","name":"integrationList"},{"description":"","name":"integrationSchedulePostTool","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: Scheduling or triggering content communicates as the authenticated social identities to public or group audiences."}},{"description":"","name":"integrationSchema"},{"description":"","name":"postSettingsTool"},{"description":"","name":"postsListTool"},{"description":"","name":"triggerTool","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: Scheduling or triggering content communicates as the authenticated social identities to public or group audiences."}},{"description":"","name":"uploadFromUrlTool"}],"tools_count":8,"transport":"streamable-http","type":"web_connector","url":"https://claude.ai/directory/f3078b0b-d797-4ab9-99c4-70e2563d33bc","uuid":"9d5b63ec-449c-5bf9-b5f8-9f0d73e27d69","verification_tier":"community","version":""},"query_key":"postiz postiz","schema_version":1,"status":"match"}