Tunc Art

{
  "name": "Tunc Art",
  "description": "Private file storage for a person's agents: save, open and delete files on their Tunc account. Send a message with no skill call to get every skill's full description and inputSchema, as an MCP agent gets them.",
  "version": "1.0.0",
  "provider": {
    "organization": "TUNC LLC",
    "url": "https://tuncart.com"
  },
  "documentationUrl": "https://tuncart.com/docs",
  "iconUrl": "https://tuncart.com/apple-touch-icon.png",
  "supportedInterfaces": [
    {
      "url": "https://a2a.tuncart.com",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ],
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extendedAgentCard": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "art_read",
      "name": "Open files",
      "description": "List the owner's files and open one.",
      "tags": [
        "files",
        "read"
      ],
      "examples": [
        "What files have I saved?",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"list\"}}",
        "Find the PDFs I saved this month.",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"list\",\"mime_prefix\":\"application/pdf\",\"created_after\":\"2026-11-01\"}}",
        "Which spreadsheets and decks do I have, biggest first?",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"list\",\"kind\":\"workbook,presentation\",\"sort\":\"largest\"}}",
        "Find the file called Q4 report.",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"list\",\"title\":\"Q4 report\"}}",
        "Open the Q4 report and read it to me.",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"get\",\"artifact_id\":\"<artifact_id from art_read list>\",\"include_content\":true}}",
        "Read pages 2 to 3 of that PDF.",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"get\",\"artifact_id\":\"<artifact_id from art_read list>\",\"include_content\":true,\"pages\":\"2-3\"}}"
      ]
    },
    {
      "id": "art_write",
      "name": "Save a file",
      "description": "Save a file to the owner's Tunc Art.",
      "tags": [
        "files",
        "write"
      ],
      "examples": [
        "Save this report as a Markdown file I can share.",
        "{\"skill\":\"art_write\",\"arguments\":{\"operation\":\"create\",\"name\":\"q4-report.md\",\"mime_type\":\"text/markdown\",\"text\":\"# Q4 report\\n\\nRevenue grew 12%.\"}}",
        "Save this chart picture.",
        "{\"skill\":\"art_write\",\"arguments\":{\"operation\":\"create\",\"name\":\"chart.png\",\"mime_type\":\"image/png\",\"content_base64\":\"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNkYPhfDwAChwGA60e6kgAAAABJRU5ErkJggg==\"}}",
        "Save these results as a CSV.",
        "{\"skill\":\"art_write\",\"arguments\":{\"operation\":\"create\",\"name\":\"results.csv\",\"mime_type\":\"text/csv\",\"text\":\"item,qty\\npens,12\\n\"}}",
        "Save this 20 MB recording.",
        "{\"skill\":\"art_write\",\"arguments\":{\"operation\":\"create\",\"mode\":\"begin\",\"name\":\"call.m4a\",\"mime_type\":\"audio/mp4\",\"byte_count\":20971520}}",
        "Finish saving the recording after uploading its bytes.",
        "{\"skill\":\"art_write\",\"arguments\":{\"operation\":\"create\",\"mode\":\"complete\",\"upload_id\":\"<upload_id from mode=begin>\",\"byte_count\":20971520}}"
      ]
    },
    {
      "id": "art_delete",
      "name": "Delete a file",
      "description": "Delete one of the owner\u2019s files.",
      "tags": [
        "files",
        "delete"
      ],
      "examples": [
        "Delete the draft report I saved earlier.",
        "{\"skill\":\"art_delete\",\"arguments\":{\"artifact_id\":\"<artifact_id from art_write or art_read>\"}}"
      ]
    }
  ],
  "securitySchemes": {
    "apiKey": {
      "httpAuthSecurityScheme": {
        "scheme": "Bearer",
        "description": "A Tunc API key from tunchub.com/account/keys/new"
      }
    },
    "oauth": {
      "oauth2SecurityScheme": {
        "description": "Sign in with Tunc and ask for resource=https://a2a.tuncart.com (tokens for the MCP server are refused here).",
        "oauth2MetadataUrl": "https://core.tunc.ai/.well-known/oauth-authorization-server",
        "flows": {
          "authorizationCode": {
            "authorizationUrl": "https://core.tunc.ai/oauth/authorize",
            "tokenUrl": "https://core.tunc.ai/oauth/token",
            "pkceRequired": true,
            "scopes": {
              "orb.read": "Read Tunc Orb",
              "art.read": "Open files",
              "art.write": "Save files",
              "art.delete": "Delete files"
            }
          }
        }
      }
    },
    "device": {
      "oauth2SecurityScheme": {
        "description": "Sign in with Tunc and ask for resource=https://a2a.tuncart.com (tokens for the MCP server are refused here). For agents without a browser.",
        "oauth2MetadataUrl": "https://core.tunc.ai/.well-known/oauth-authorization-server",
        "flows": {
          "deviceCode": {
            "deviceAuthorizationUrl": "https://core.tunc.ai/oauth/device_authorization",
            "tokenUrl": "https://core.tunc.ai/oauth/token",
            "scopes": {
              "orb.read": "Read Tunc Orb",
              "art.read": "Open files",
              "art.write": "Save files",
              "art.delete": "Delete files"
            }
          }
        }
      }
    }
  },
  "securityRequirements": [
    {
      "schemes": {
        "apiKey": {
          "list": []
        }
      }
    },
    {
      "schemes": {
        "oauth": {
          "list": [
            "orb.read"
          ]
        }
      }
    },
    {
      "schemes": {
        "device": {
          "list": [
            "orb.read"
          ]
        }
      }
    }
  ]
}