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Each result includes a reason code array explaining why it was ranked. Use this instead of query_registry when you want an opinionated ranked list rather than a filtered search.","inputSchema":{"type":"object","properties":{"q":{"type":"string","description":"Task or capability query — e.g. \"search the web\" or \"read files\""},"auth":{"type":"boolean","description":"Include servers that require authentication (default: true)"},"production_safe":{"type":"boolean","description":"Only return production-safe servers (uptime > 97%, handshake > 95%)"},"read_only":{"type":"boolean","description":"Only return servers with no write-classified tools"},"limit":{"type":"number","description":"Max results 1–20 (default: 5)"}}}},{"name":"report_server","description":"Submit an agent usage report for an MCP server. Reports are aggregated and influence registry trust scores. Call this after using an MCP server so the registry can track real-world reliability. Supports both a simple outcome report and a structured scoring report (criterion + component_score).","inputSchema":{"type":"object","required":["serverUrl","outcome"],"properties":{"serverUrl":{"type":"string","description":"The MCP server endpoint URL that was used"},"outcome":{"type":"string","enum":["success","failure","partial"],"description":"Result of using the server"},"agentId":{"type":"string","description":"Identifier for the reporting agent (optional)"},"toolsUsed":{"type":"array","items":{"type":"string"},"description":"List of tool names that were called"},"turnsRequired":{"type":"number","description":"Number of turns to complete the task"},"latencyMs":{"type":"number","description":"Total wall-clock latency in milliseconds"},"taskCategory":{"type":"string","description":"Category of task attempted (e.g. \"search\", \"write\", \"read\")"},"taskDescription":{"type":"string","description":"Brief description of what the task was"},"errors":{"type":"array","items":{"type":"string"},"description":"Array of error strings encountered during tool use"},"criterion":{"type":"string","enum":["output_reliability","side_effect_transparency","failure_handling","rate_limits","agent_feedback"],"description":"Specific reliability criterion being scored (enables structured component scoring)"},"componentScore":{"type":"number","description":"Score 0–100 for the specified criterion"},"severity":{"type":"string","enum":["info","warning","error","critical"],"description":"Severity of the worst issue encountered"},"environment":{"type":"string","enum":["prod","staging","dev","unknown"],"description":"Environment the server was used in"},"evidenceRef":{"type":"string","description":"Trace ID, log URL, or other reference supporting this report"}}}}]}},"bad_protocol_headers":{"strict-transport-security":"max-age=31536000; includeSubDomains; preload","content-type":"application/json; 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MCP Registry","registry_version":null,"server_card_version":"0.1.0","registry_homepage":null,"server_card_homepage":null,"registry_repository":null,"server_card_repository":null,"drift_fields":[],"metadata_document_count":2}},"connector_publishability_probe":{"status":"warning","latency_ms":null,"details":{"transport":"streamable-http","tool_count":4,"high_risk_tools":1,"blockers":["transport_compliance","action_safety"],"criteria":{"remote_transport":true,"initialize":true,"tools_list":true,"protocol_version":true,"session_resume":true,"step_up_auth":true,"transport_compliance":false,"connector_replay":true,"request_association":true,"action_safety":false,"server_card":true,"tool_surface":true,"auth_flow":true}}}},"score_components":{"auth_operability_score":2.0,"error_contract_score":3.4,"rate_limit_semantics_score":2.0,"schema_completeness_score":2.0,"backward_compatibility_score":2.0,"slo_health_score":4.0,"security_hygiene_score":2.0,"task_success_score":4.0,"trust_confidence_score":1.75,"abuse_noise_ratio_score":4.0,"prompt_contract_score":2.0,"resource_contract_score":2.0,"discovery_metadata_score":3.0,"registry_consistency_score":2.0,"installability_score":4.0,"session_semantics_score":4.0,"tool_surface_design_score":3.0,"result_shape_stability_score":2.0,"oauth_interop_score":3.0,"recovery_semantics_score":0.0,"maintenance_signal_score":3.0,"adoption_signal_score":2.0,"freshness_confidence_score":3.0,"transport_fidelity_score":4.0,"spec_recency_score":4.0,"session_resume_score":3.0,"step_up_auth_score":3.0,"transport_compliance_score":0.0,"utility_coverage_score":2.0,"advanced_capability_coverage_score":2.0,"connector_publishability_score":3.0,"tool_snapshot_churn_score":3.0,"connector_replay_score":3.0,"request_association_score":3.0,"interactive_flow_safety_score":3.0,"action_safety_score":2.0,"official_registry_presence_score":4.0,"provenance_divergence_score":4.0,"safety_transparency_score":2.0,"tool_capability_clarity_score":4.0,"destructive_operation_safety_score":3.0,"egress_ssrf_resilience_score":3.5,"execution_sandbox_safety_score":2.0,"data_exfiltration_resilience_score":3.35,"least_privilege_scope_score":2.0,"secret_handling_hygiene_score":3.0,"dependency_supply_chain_signal_score":2.5,"input_sanitization_safety_score":3.0,"tool_namespace_clarity_score":4.0},"validation_schema_version":"16d1d270090d6c8f","started_at":"2026-07-31T05:34:01.520578+00:00","completed_at":"2026-07-31T05:34:02.799329+00:00"},"current_snapshot":{"schema_version":"verify.trust_snapshot.v1","snapshot_id":"trustsnap_f09d8762b5263ffb","generated_at":"2026-07-31T10:28:47.146849+00:00","source":"current_snapshot","server":"ai.arclan/registry","last_validated_at":"2026-07-31T05:34:02.799329+00:00","validation_age_hours":4.91,"freshness":{"schema_version":"verify.freshness_profile.v1","last_validated_at":"2026-07-31T05:34:02.799329+00:00","age_hours":4.91,"bucket":"verified_last_24h","label":"Verified 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validation","reason_count":2},"production_readiness_class":{"code":"safe_for_evaluation","label":"Safe for evaluation","reason":"The server is suitable for evaluation, but remaining gaps should be resolved before broad production use."},"evidence_confidence":{"score":76.25,"label":"high","validation_age_hours":4.91,"live_check_count":26},"active_alerts":[]},"trust_snapshot":{"schema_version":"verify.trust_snapshot.v1","snapshot_id":"trustsnap_f09d8762b5263ffb","generated_at":"2026-07-31T10:28:47.146849+00:00","source":"current_snapshot","server":"ai.arclan/registry","last_validated_at":"2026-07-31T05:34:02.799329+00:00","validation_age_hours":4.91,"freshness":{"schema_version":"verify.freshness_profile.v1","last_validated_at":"2026-07-31T05:34:02.799329+00:00","age_hours":4.91,"bucket":"verified_last_24h","label":"Verified in last 24h","badges":["verified_last_24h"],"freshness_sla_hours":168.0,"freshness_sla_status":"met","stale_score_suppressed":false,"display_score":69.13,"raw_score":69.13,"confidence_score":76.2,"confidence_weighted_score":52.7,"tier_status":[{"tier":"community","label":"Community","freshness_sla_hours":720,"met":true,"priority_revalidation":false},{"tier":"pro","label":"Pro","freshness_sla_hours":168,"met":true,"priority_revalidation":true},{"tier":"enterprise","label":"Enterprise","freshness_sla_hours":24,"met":true,"priority_revalidation":true}]},"current_status":"healthy","current_score":69.13,"display_score":69.13,"stale_score_suppressed":false,"production_trust_decision":{"schema_version":"verify.executive_verdict.v1","decision":"Allow with approval","why":"exec-capable tools + no confirmation safeguards + high-risk tools need review","next_action":"export policy, require approval for writes, add authenticated validation","reason_count":2},"production_readiness_class":{"code":"safe_for_evaluation","label":"Safe for evaluation","reason":"The server is suitable for evaluation, but remaining gaps should be resolved before broad production use."},"evidence_confidence":{"score":76.25,"label":"high","validation_age_hours":4.91,"live_check_count":26},"active_alerts":[]},"snapshot_invariant":{"schema_version":"verify.snapshot_invariant.v1","server":"ai.arclan/registry","ok":true,"surface_snapshot_ids":{"page":"trustsnap_f09d8762b5263ffb","badge":null,"report":"trustsnap_f09d8762b5263ffb","policy":null},"checked_at":"2026-07-31T10:29:11.043368+00:00"},"history":{"points":[{"timestamp":"2026-07-31T05:34:02.799329+00:00","score":69.13,"status":"healthy","latency_ms":1277.74,"tool_count":4,"prompt_count":0,"resource_count":0}],"status_counts":{"healthy":1},"score_delta_7d":null,"score_delta_30d":null,"avg_latency_ms":1277.74,"healthy_ratio_recent":1.0,"freshness_hours":4.91,"latest_status":"healthy"},"production_readiness":{"code":"safe_for_evaluation","label":"Safe for evaluation","reason":"The server is suitable for evaluation, but remaining gaps should be resolved before broad production use.","badge":"score-medium","critical_alerts":0},"agent_commerce_readiness":{"status":"beta","commerce_signal":"moderate","payment_execution_detected":"no","billing_or_usage_detected":"yes","quote_or_pricing_detected":"no","numeric_price_context":"yes","commercial_quote_context":"no","checkout_or_charge_detected":"no","checkout_term_observed":"no","payment_capable":"inferred","payment_rails":[],"purchase_stage_supported":["usage_metering"],"human_confirmation_required":"unknown","spending_policy_supported":"yes","receipt_supported":"unknown","refund_policy_present":"unknown","operator_identity":"declared","auth_required":"no","auth_scheme":"none","tool_risk_level":"write_capable","tool_risk_score":35,"pricing_transparency":"partial","schema_change_detected":"unknown","delegation_level":"usage_metering_context","evidence_level":"inferred","confidence":"medium","highest_risk_tools":[{"name":"query_registry","risk_level":"write_capable"},{"name":"recommend_server","risk_level":"write_capable"},{"name":"report_server","risk_level":"write_capable"}],"skipped_unsafe_tools":["query_registry","recommend_server","report_server"],"last_checked_at":"2026-07-31T10:28:47.140656+00:00","evidence":[{"field":"commerce_signal","value":"moderate","evidence_level":"observed","source":"tool_schema","matched_terms":["limit","limits","usage","rate"],"sample":"query_registry","confidence":"medium","last_checked_at":"2026-07-31T10:28:47.140656+00:00"}],"disclaimer":"Beta assessment. Verify detects evidence and risk signals but does not certify that this server is safe for autonomous purchases.","scores":{"auth_posture_score":10,"tool_risk_score":35,"payment_readiness_score":35,"agent_delegation_safety_score":10,"overall_agent_commerce_score":23},"warnings":["Verify observed commerce-adjacent billing, usage, or pricing context, but did not observe a tool that can execute payment."],"recommended_fixes":["Clarify whether observed billing, usage, or pricing context can execute payment or is informational only."]},"evidence_confidence":{"score":76.25,"label":"high","reason":"Based on 1 recent validations, 26 captured checks, and validation age of 4.9 hours.","live_check_count":26,"validation_age_hours":4.91},"recommended_for":[{"label":"Claude Desktop","reason":"Claude Desktop is marked compatible with score 83."},{"label":"Smithery","reason":"Smithery is marked compatible with score 100."},{"label":"Generic Streamable HTTP","reason":"Generic Streamable HTTP is marked compatible with score 100."}],"active_alerts":[],"remediations":[{"code":"add_confirmation_semantics","severity":"high","title":"Add confirmation and dry-run semantics for risky actions","why":"High-risk write, delete, exec, or egress tools should communicate safeguards clearly.","action":"Inspect the latest validation evidence and resolve the client-visible regression.","playbook":["Inspect the latest validation evidence.","Resolve the highest-severity client-facing gap first.","Revalidate and confirm the score and verdict improve."],"maintainer_context":null},{"code":"fix_transport_compliance","severity":"high","title":"Align session and protocol behavior with Streamable HTTP expectations","why":"Clients increasingly rely on MCP-Protocol-Version, session teardown, and expired-session semantics.","action":"Align MCP-Protocol-Version, MCP-Session-Id, DELETE teardown, and expired-session handling with the transport spec.","playbook":["Return `Mcp-Session-Id` and `Mcp-Protocol-Version` headers consistently on streamable HTTP responses.","Honor `DELETE` session teardown and return `404` when a deleted session is reused.","Reject invalid protocol-version headers with `400 Bad Request`."],"maintainer_context":null},{"code":"enforce_request_association","severity":"high","title":"Associate roots, sampling, and elicitation with active client requests","why":"Modern MCP guidance expects roots, sampling, and elicitation traffic to be tied to an active client request instead of arriving unsolicited on idle sessions.","action":"Inspect the latest validation evidence and resolve the client-visible regression.","playbook":["Inspect the latest validation evidence.","Resolve the highest-severity client-facing gap first.","Revalidate and confirm the score and verdict improve."],"maintainer_context":null},{"code":"publish_oauth_protected_resource","severity":"high","title":"Expose /.well-known/oauth-protected-resource","why":"Without a protected-resource document, OAuth clients cannot discover auth requirements reliably.","action":"Serve /.well-known/oauth-protected-resource and point it at your authorization server metadata.","playbook":["Serve `/.well-known/oauth-protected-resource` from the same host as the MCP endpoint.","Point it at the authorization server metadata URL.","Confirm clients receive consistent auth hints before tool execution."],"maintainer_context":null},{"code":"protect_connector_refreshes","severity":"high","title":"Keep connector refreshes backward compatible","why":"Managed connector clients freeze tool snapshots, so removed tools, new required args, and breaking output changes can break published integrations after refresh.","action":"Inspect the latest validation evidence and resolve the client-visible regression.","playbook":["Inspect the latest validation evidence.","Resolve the highest-severity client-facing gap first.","Revalidate and confirm the score and verdict improve."],"maintainer_context":null},{"code":"publish_oauth_authorization_server","severity":"high","title":"Publish OAuth authorization-server metadata","why":"Clients need authorization-server metadata to discover issuer, endpoints, and DCR support.","action":"Publish /.well-known/oauth-authorization-server from your issuer and include registration_endpoint when supported.","playbook":["Publish `/.well-known/oauth-authorization-server` from the issuer.","Add `registration_endpoint` if DCR is supported.","Verify issuer, authorization, token, and jwks metadata are all reachable."],"maintainer_context":null},{"code":"harden_interactive_flows","severity":"high","title":"Stop asking users to paste secrets directly","why":"Public MCP servers should prefer OAuth or browser-based auth guidance over in-band secret collection.","action":"Inspect the latest validation evidence and resolve the client-visible regression.","playbook":["Inspect the latest validation evidence.","Resolve the highest-severity client-facing gap first.","Revalidate and confirm the score and verdict improve."],"maintainer_context":null},{"code":"update_protocol_version","severity":"medium","title":"Adopt a current MCP protocol revision","why":"Older protocol revisions reduce compatibility with newer clients and registry programs.","action":"Inspect the latest validation evidence and resolve the client-visible regression.","playbook":["Inspect the latest validation evidence.","Resolve the highest-severity client-facing gap first.","Revalidate and confirm the score and verdict improve."],"maintainer_context":null},{"code":"improve_connector_publishability","severity":"medium","title":"Close connector-publishing gaps","why":"Connector catalogs care about protocol recency, session behavior, auth clarity, and tool-surface stability.","action":"Inspect the latest validation evidence and resolve the client-visible regression.","playbook":["Inspect the latest validation evidence.","Resolve the highest-severity client-facing gap first.","Revalidate and confirm the score and verdict improve."],"maintainer_context":null},{"code":"tighten_step_up_auth","severity":"medium","title":"Document minimal scopes and return cleaner auth challenges","why":"Modern clients expect granular scopes and step-up auth signals such as WWW-Authenticate scope hints.","action":"Return granular scopes and WWW-Authenticate challenge hints instead of forcing overly broad auth upfront.","playbook":["Advertise the narrowest viable scopes in OAuth metadata.","Return `WWW-Authenticate` challenges with scope or insufficient-scope hints when additional consent is needed.","Revalidate with both public discovery and auth-required flows."],"maintainer_context":null},{"code":"publish_openid_configuration","severity":"medium","title":"Publish OpenID configuration","why":"OIDC metadata improves token validation and client compatibility.","action":"Expose /.well-known/openid-configuration with issuer, jwks_uri, and supported grants.","playbook":["Inspect the latest validation evidence.","Resolve the highest-severity client-facing gap first.","Revalidate and confirm the score and verdict improve."],"maintainer_context":null},{"code":"stabilize_tool_surface","severity":"medium","title":"Reduce tool-surface churn","why":"Frequent add/remove or output-shape drift makes published connectors and cached tool snapshots brittle.","action":"Inspect the latest validation evidence and resolve the client-visible regression.","playbook":["Inspect the latest validation evidence.","Resolve the highest-severity client-facing gap first.","Revalidate and confirm the score and verdict improve."],"maintainer_context":null},{"code":"fix_prompts_list","severity":"medium","title":"Repair prompts/list or stop advertising prompts","why":"Prompt metadata should either work live or be removed from the advertised capability set.","action":"Only advertise prompts if prompts/list works and prompt arguments are documented.","playbook":["Only advertise prompts that are actually accessible.","Add prompt descriptions and argument docs.","Run a live `prompts/list` check after any prompt changes."],"maintainer_context":null},{"code":"fix_resources_list","severity":"medium","title":"Repair resources/list or stop advertising resources","why":"Resource metadata should either work live or be removed from the advertised capability set.","action":"Only advertise resources if resources/list works and resources expose stable URIs/types.","playbook":["Only advertise resources with stable URIs and read semantics.","Add MIME/type hints where possible.","Run a live `resources/list` and `resources/read` check after updates."],"maintainer_context":null},{"code":"repair_session_resume","severity":"medium","title":"Support resumable HTTP sessions cleanly","why":"Modern MCP clients increasingly expect resumable session behavior on streamable HTTP transports.","action":"Inspect the latest validation evidence and resolve the client-visible regression.","playbook":["Inspect the latest validation evidence.","Resolve the highest-severity client-facing gap first.","Revalidate and confirm the score and verdict improve."],"maintainer_context":null},{"code":"expand_utility_coverage","severity":"low","title":"Expose modern utility surfaces like completions, pagination, or tasks","why":"Utility coverage improves interoperability with larger clients and long-lived agent workflows.","action":"Expose completions, pagination, and task metadata where supported so larger clients can plan and resume work safely.","playbook":["Advertise `completions`, pagination cursors, and `tasks` only when they are actually supported.","Return `nextCursor` on large list operations when pagination is available.","Document task support and whether it requires step-up auth."],"maintainer_context":null},{"code":"expand_advanced_capabilities","severity":"low","title":"Publish newer MCP capability signals","why":"Roots, sampling, elicitation, structured outputs, and related metadata improve client understanding and ranking.","action":"Inspect the latest validation evidence and resolve the client-visible regression.","playbook":["Inspect the latest validation evidence.","Resolve the highest-severity client-facing gap first.","Revalidate and confirm the score and verdict improve."],"maintainer_context":null}],"publisher_claim":{"verified":false,"status":"unclaimed","claim_url":"https://verify.sentinelsignal.io/claim?server=ai.arclan%2Fregistry&source=report_json","reason_code":"machine_attention_detected","reason":"Agents and crawlers are already evaluating this server. Claim to publish authoritative owner, security, trust, and integration metadata.","score_neutral":true},"observed_attention":{"schema":"verify.observed_attention.v1","window_days":30,"level":"moderate","label":"Moderate observed attention","summary":"Recent machine-readable trust and discovery activity observed for this server.","segments":{"useful_ai_user":{"level":"none","observed":false,"description":"AI-assisted user sessions such as ChatGPT/User or Claude/User."},"machine_trust_evaluator":{"level":"low","observed":true,"description":"Synthetic sessions inspecting multiple trust surfaces such as report, policy, ledger, badge, trust-summary, or compare."},"possible_agent_or_script":{"level":"low","observed":true,"description":"Structured direct sessions with rapid profile, compare, report, policy, badge, or trust-surface fan-out."},"isolated_machine_surface":{"level":"none","observed":false,"description":"Aged-out direct synthetic singleton sessions that touched a machine-readable trust surface without becoming a broader evaluator."},"ai_crawler":{"level":"moderate","observed":true,"description":"Known AI crawler activity such as ClaudeBot, GPTBot, or similar crawlers."},"search_crawler":{"level":"none","observed":false,"description":"Search and SEO crawler activity."},"browser_like_automation":{"level":"none","observed":false,"description":"Browser-like synthetic sessions with rapid structured endpoint activity."},"confirmed_human":{"level":"none","observed":false,"description":"Confirmed browser-session human activity."}},"surfaces_observed":{"server_profile":true,"compare":true,"compare_json":false,"compare_api":false,"report_json":true,"policy":true,"ledger":true,"badge_metadata":true,"badge_svg":false,"trust_summary":true,"mcp_tool":false},"claim_prompt":{"recommended":true,"reason":"This server has recent machine attention. A verified publisher claim can improve owner, policy, security, and trust metadata available to agents."},"notes":["Observed attention is based on segmented first-party telemetry.","Crawler and evaluator activity is not treated as confirmed human demand.","Public levels are bucketed to avoid exposing raw traffic counts."]},"owner_activation":{"claim_recommended":true,"reason":"ai_discovery_detected","headline":"AI discovery detected","message":"This server is being discovered by AI users, crawlers, or machine trust evaluators on Verify. Claim this profile to add publisher metadata, official links, a security contact, and machine-readable trust details agents can use.","claim_url":"https://verify.sentinelsignal.io/claim?server=ai.arclan%2Fregistry&source=report_json","trust_summary_url":"https://verify.sentinelsignal.io/v1/servers/ai.arclan/registry/trust-summary"},"related_machine_surfaces":{"compare_index":"/compare.json","compare_api":"/v1/compare?server=ai.arclan%2Fregistry","trust_summary":"/v1/servers/ai.arclan/registry/trust-summary","ledger":"/v1/servers/ai.arclan/registry/ledger","policy":"/v1/servers/ai.arclan/registry/policy","report":"/v1/servers/ai.arclan/registry/report"},"intelligence_api":{"available":true,"signup_url":"https://verify.sentinelsignal.io/verify-intelligence-api","use_case":"Programmatic MCP server trust, comparison, policy, and evidence enrichment."}}