{"generated_at":"2026-10-14T20:07:22+00:00","item":{"added_at":"2026-08-05","analysis_method":"independent_manual_review_2026-10-10","assessment_status":"reviewed","auth_posture":"auth_required","category":"Web Connector","confidence":"high","description":"Create and manage Builder.io CMS content from Claude. Search entries, update pages and inspect or change content models. Use design tokens, registered components and templates to guide new content.","did":"051b45ef-c902-4918-9a3e-18833cd1121c","documentation_url":"https://www.builder.io/c/docs/mcp-builder-server","editorial_description":{"extended_description":"Tools support symbols, page hierarchy, assets, model schemas and direct content-source editing. Workflows include investigating rendering issues, checking design consistency and migrating entries after schema changes. A connected Builder.io account is required; content updates are not limited to read-only analysis.","schema_version":1,"summary":"Create and manage Builder.io CMS content from Claude.\nSearch entries, update pages and inspect or change content models.\nUse design tokens, registered components and templates to guide new content."},"homepage_url":"","icon":"","id":"051b45ef-c902-4918-9a3e-18833cd1121c","installs":0,"last_scanned":"","license":"","long_description":"Tools support symbols, page hierarchy, assets, model schemas and direct content-source editing. Workflows include investigating rendering issues, checking design consistency and migrating entries after schema changes. A connected Builder.io account is required; content updates are not limited to read-only analysis.","manual_assessment":"high","manual_review":{"all_findings":[{"evidence":"Official MCP documentation explicitly states that Symbols are automatically published once created.","reasoning":"The action can make new reusable site content live without the normal separate draft-publish step.","risk_type":"deployment_infrastructure","severity":"high","title":"Created Symbols are automatically published","triggering_tools_or_skills":["create_symbol"]},{"evidence":"An automatically published Symbol becomes shared content available to site experiences in the selected Builder Space.","reasoning":"Publishing content represents the connected user to external site audiences.","risk_type":"messaging_as_user","severity":"high","title":"Content can be externally published","triggering_tools_or_skills":["create_symbol"]},{"evidence":"Official documentation confirms persistent creation and modification of content entries, model schemas, targeting, schedules, and source.","reasoning":"These actions change production CMS state even when content remains draft.","risk_type":"data_modification","severity":"medium","title":"Content and models can be created or updated","triggering_tools_or_skills":["create_builder_content","create_builder_model","edit_content_source","update_builder_model","update_content","write_content_source"]},{"evidence":"Read and search tools return user-authored CMS content, source, asset metadata, templates, and component definitions.","reasoning":"Stored content from editors or imports is untrusted model input.","risk_type":"prompt_injection_exposure","severity":"low","title":"CMS content and assets enter context","triggering_tools_or_skills":["get_content","search_builder_content","read_content_source","search_assets"]}],"assessment_status":"reviewed","auth_and_scopes":"OAuth 2.0 with dynamic client registration; user selects a Builder Content Space and actions follow that user's roles and permissions.","blocked_missing_evidence":null,"confidence":"high","displayed_risk":"high","evidence_completeness":"complete","manual_overall_risk":"high","official_sources":[{"accessed_at":"2026-10-10T20:24:37Z","url_or_path":"plutosecurity/plutonium@b749c8dc43536c794409be9805edd48063f045e2:app/data/conn/claudesec/051b45ef-c902-4918-9a3e-18833cd1121c.json","what_it_proves":"Candidate PR #125 record identity (name \"Builder.io CMS\", publisher, type web_connector) and 20 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/051b45ef-c902-4918-9a3e-18833cd1121c: complete tool_names inventory (20 tools), remote streamable-http endpoint https://mcp.builder.io/mcp/publish, auth_posture auth_required, directory tier community"},{"accessed_at":"2026-10-10T20:48:06Z","url_or_path":"https://www.builder.io/c/docs/mcp-builder-server","what_it_proves":"Official MCP documentation describes OAuth, reads, content and model creation/update, targeting and scheduling, and states create_symbol automatically publishes the Symbol."},{"accessed_at":"2026-10-10T20:48:06Z","url_or_path":"https://www.builder.io/c/docs/content-agent","what_it_proves":"Official Content Agent docs state MCP changes normally create drafts with approval, while users may grant full access; publishing is otherwise a separate review step."}],"primary_reason":"Official documentation confirms broad CMS modification and the exceptional create_symbol path that publishes immediately.","provisional_risk":null,"publication_recommendation":"accept","requires_runtime_verification":false,"review_key":"claude:051b45ef-c902-4918-9a3e-18833cd1121c","reviewed_at":"2026-10-10","reviewer_notes":"Reviewed all 20 tools against official MCP and Content Agent docs; most generated entries default to draft, but create_symbol is explicitly auto-published.","risk_domains":{"arbitrary_network_access":"false","authz_ambiguity":"false","browser_control":"false","credential_or_admin_actions":"false","deletes_data":"false","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":20,"tools_or_skills_total":20},"name":"Builder.io CMS","needs_runtime_verification":false,"plutonium_url":"https://plutonium.pluto.security/detail.html?planet=claudesec&did=051b45ef-c902-4918-9a3e-18833cd1121c&utm_source=plutonium_analysis_skill&utm_medium=claude_skill&utm_campaign=connector_risk_assessment","privacy_policy_url":"https://www.builder.io/legal/privacy","provisional_risk":null,"publication_recommendation":"accept","publisher":"Builder.io","publisher_url":"https://www.builder.io/","remote_url":"https://mcp.builder.io/mcp/publish","repository_url":"","risk":"high","risk_severity":"high","security_risks":[{"description":"This connector can deploy code or change infrastructure and production environments. Review findings: The action can make new reusable site content live without the normal separate draft-publish step.","evidence":"Created Symbols are automatically published: Official MCP documentation explicitly states that Symbols are automatically published once created.","manual_risk_type":"deployment_infrastructure","remediation":{"block_tool_categories":["code_execution","state_change"],"steps":["Default to a sandbox or staging environment.","Require code review, human approval, audit logging, and a tested rollback path for production changes."]},"risk_type":"code_deployment","severity":"high","title":"Created Symbols are automatically published","triggering_tools":["create_symbol"]},{"description":"This connector can publish or send messages and content using the connected identity. Review findings: Publishing content represents the connected user to external site audiences.","evidence":"Content can be externally published: An automatically published Symbol becomes shared content available to site experiences in the selected Builder Space.","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":"Content can be externally published","triggering_tools":["create_symbol"]},{"description":"This connector can create, update, configure, or otherwise change connected resources. Review findings: These actions change production CMS state even when content remains draft.","evidence":"Content and models can be created or updated: Official documentation confirms persistent creation and modification of content entries, model schemas, targeting, schedules, and source.","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":"Content and models can be created or updated","triggering_tools":["create_builder_content","create_builder_model","edit_content_source","update_builder_model","update_content","write_content_source"]}],"signature_status":"unknown","source_code_reviewed":false,"support_url":"support@builder.io","tags":["code_deployment","modifies_data","network_access","oauth_required","sends_messages_as_you","web_connector"],"tools":[{"description":"","name":"browse_model_content"},{"description":"","name":"create_builder_content","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 actions change production CMS state even when content remains draft."}},{"description":"","name":"create_builder_model","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 actions change production CMS state even when content remains draft."}},{"description":"","name":"create_symbol","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: Publishing content represents the connected user to external site audiences."}},{"description":"","name":"edit_content_source","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 actions change production CMS state even when content remains draft."}},{"description":"","name":"get_content"},{"description":"","name":"get_design_tokens"},{"description":"","name":"get_model_schema"},{"description":"","name":"get_pages_hierarchy"},{"description":"","name":"get_registered_components"},{"description":"","name":"get_templates"},{"description":"","name":"list_builder_models"},{"description":"","name":"read_content_source"},{"description":"","name":"search_assets"},{"description":"","name":"search_builder_content"},{"description":"","name":"search_content_ids"},{"description":"","name":"update_builder_model","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 actions change production CMS state even when content remains draft."}},{"description":"","name":"update_content","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 actions change production CMS state even when content remains draft."}},{"description":"","name":"who_am_i"},{"description":"","name":"write_content_source","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 actions change production CMS state even when content remains draft."}}],"tools_count":20,"transport":"streamable-http","type":"web_connector","url":"https://claude.ai/directory/051b45ef-c902-4918-9a3e-18833cd1121c","uuid":"2b4c33d8-42a2-54a8-a216-f5bb3fb47a57","verification_tier":"community","version":""},"query_key":"builder io cms","schema_version":1,"status":"match"}