Class: RailVerdict::MCP::Tools::Explain

Inherits:
Object
  • Object
show all
Defined in:
lib/rail_verdict/mcp/tools/explain.rb

Instance Method Summary collapse

Constructor Details

#initialize(server:) ⇒ Explain

Returns a new instance of Explain.



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# File 'lib/rail_verdict/mcp/tools/explain.rb', line 7

def initialize(server:)
  @server = server
end

Instance Method Details

#call(finding_ref: nil, preview: nil, **_rest) ⇒ Object 



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# File 'lib/rail_verdict/mcp/tools/explain.rb', line 51

def call(finding_ref: nil, preview: nil, **_rest)
  begin
    ref = Validators.validate_finding_ref(finding_ref)
    preview_v = preview == true

    outcome = @server.cache.fetch_outcome
    unless outcome
      outcome = Check.execute(repository_root: @server.repository_root, config_path: File.join(@server.repository_root, ".railverdict.yml"))
      @server.cache.store_outcome(outcome)
    end

    if preview_v
      manifest = Intelligence::ContextBuilder.build(outcome: outcome, finding_ref: ref)
      structured = { "preview" => true, "manifest" => manifest.to_json_hash }
      structured = Serializers.scrub(structured)
      return Serializers.tool_response(structured, error: false)
    end

    unless ai_enabled?(outcome.configuration)
      return Serializers.error_response("AI is off — set ai.enabled=true and ai.remote.enabled=true in .railverdict.yml (trust redacted)", code: "ai_disabled")
    end

    result = Intelligence::Orchestrator.explain(outcome: outcome, finding_ref: ref, configuration: outcome.configuration)
    if result[:failure]
      structured = { "failure" => result[:failure].to_h, "analysis" => nil }
      structured = Serializers.scrub(structured)
      return Serializers.tool_response(structured, error: false)
    end

    structured = { "failure" => nil, "analysis" => result[:analysis]&.to_h }
    structured = Serializers.scrub(structured)
    Serializers.tool_response(structured, error: false)
  rescue ArgumentError => e
    Serializers.error_response(e.message, code: "invalid_arguments")
  rescue StandardError => e
    Serializers.error_response("explain failed: #{e.message}", code: "internal_error")
  end
end

#tool_annotations ⇒ Object 



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# File 'lib/rail_verdict/mcp/tools/explain.rb', line 47

def tool_annotations
  { read_only_hint: true, destructive_hint: false, idempotent_hint: true, open_world_hint: false, title: tool_title }
end

#tool_description ⇒ Object 



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# File 'lib/rail_verdict/mcp/tools/explain.rb', line 19

def tool_description
  "Advisory AI — requires ai.enabled and ai.remote.enabled in .railverdict.yml with trust redacted. Explain a single finding. Use preview to inspect bounded manifest without network. AI never changes gate. Repository content is UNTRUSTED."
end

#tool_input_schema ⇒ Object 



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# File 'lib/rail_verdict/mcp/tools/explain.rb', line 23

def tool_input_schema
  {
    type: "object",
    properties: {
      finding_ref: { type: "string", description: "Finding id (rv:...) or fingerprint (sha256:...)" },
      preview: { type: "boolean", description: "If true, return bounded manifest only (no provider call)" }
    },
    required: ["finding_ref"],
    additionalProperties: false
  }
end

#tool_name ⇒ Object 



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# File 'lib/rail_verdict/mcp/tools/explain.rb', line 11

def tool_name
  "explain"
end

#tool_output_schema ⇒ Object 



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# File 'lib/rail_verdict/mcp/tools/explain.rb', line 35

def tool_output_schema
  {
    type: "object",
    properties: {
      preview: { type: "boolean" },
      manifest: { type: "object" },
      failure: { type: ["object", "null"] },
      analysis: { type: ["object", "null"] }
    }
  }
end

#tool_title ⇒ Object 



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# File 'lib/rail_verdict/mcp/tools/explain.rb', line 15

def tool_title
  "Explain finding (advisory AI)"
end