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Documentation Index

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Tool Servers API

The Tool Servers API allows you to manage external tool integrations that agents and assistants can use. Tool servers define collections of API endpoints that can be called as tools during AI executions.

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Capabilities

  • CRUD Operations: Create, read, update, and delete tool servers
  • Tool Management: Add, update, and remove individual tools
  • Test Tool Calls: Test tool configurations before deployment
  • Clone Servers: Duplicate tool server configurations
  • Authentication: Support for JWT, OAuth2, Basic Auth, and custom headers

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How Tool Servers Connect to Agents

Tool Servers provide external API capabilities through a layered architecture: 
Tool Server (API Definition)
       │
       │ assigned to
       ▼
  Tools Group (Logical Grouping)
       │
       │ referenced by availableToolsGroupsUids
       ▼
Assistant Specialization
       │
       ├──► Assistant (processes messages with tools)
       │
       └──► Agent (executes threads with tools)

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Integration Steps

  1. Create Tool Server: Define your external API tools
  2. Assign to Tools Group: Link the tool server to a Tools Group (via dashboard)
  3. Configure Agent: Add the Tools Group UID to availableToolsGroupsUids
  4. Tools Available: The agent can now invoke tools during execution

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Endpoints Summary

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Tool Server Management

MethodEndpointDescription
GET/api/v1/tool-serversList all tool servers
GET/api/v1/tool-servers/:idGet tool server by ID
POST/api/v1/tool-serversCreate tool server
PATCH/api/v1/tool-servers/:idUpdate tool server
DELETE/api/v1/tool-servers/:idDelete tool server
POST/api/v1/tool-servers/:id/cloneClone tool server

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Tool Management

MethodEndpointDescription
GET/api/v1/tool-servers/:id/toolsList tools in server
GET/api/v1/tool-servers/:id/tools/:nameGet specific tool
POST/api/v1/tool-servers/:id/toolsAdd tool to server
PATCH/api/v1/tool-servers/:id/tools/:nameUpdate tool
DELETE/api/v1/tool-servers/:id/tools/:nameDelete tool
POST/api/v1/tool-servers/:id/tools/:name/testTest tool call

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Example: Create Tool Server with Tools

curl -X POST "https://api.devic.ai/api/v1/tool-servers" \
  -H "Authorization: Bearer devic-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Weather API",
    "description": "Get weather information",
    "url": "https://api.weather.example.com",
    "identifier": "weather-api",
    "enabled": true,
    "toolDefinitions": [
      {
        "type": "function",
        "function": {
          "name": "get_weather",
          "description": "Get current weather for a location",
          "parameters": {
            "type": "object",
            "properties": {
              "city": {
                "type": "string",
                "description": "City name"
              }
            },
            "required": ["city"]
          }
        },
        "endpoint": "/weather/${city}",
        "method": "GET",
        "pathParametersKeys": ["city"]
      }
    ]
  }'

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Example: Add Tool to Existing Server

curl -X POST "https://api.devic.ai/api/v1/tool-servers/server-123/tools" \
  -H "Authorization: Bearer devic-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "tool": {
      "type": "function",
      "function": {
        "name": "create_contact",
        "description": "Create a new contact in the CRM",
        "parameters": {
          "type": "object",
          "properties": {
            "name": { "type": "string" },
            "email": { "type": "string" }
          },
          "required": ["name", "email"]
        }
      },
      "endpoint": "/contacts",
      "method": "POST",
      "bodyMode": "advanced",
      "bodyJsonTemplate": "{ name: params.name, email: params.email }"
    }
  }'

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Example: Test Tool Call

curl -X POST "https://api.devic.ai/api/v1/tool-servers/server-123/tools/get_weather/test" \
  -H "Authorization: Bearer devic-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "parameters": {
      "city": "London"
    }
  }'

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Response

{
  "success": true,
  "data": {
    "success": true,
    "data": {
      "temperature": 15,
      "condition": "cloudy"
    },
    "executionTimeMs": 245,
    "requestUrl": "https://api.weather.example.com/weather/London",
    "requestMethod": "GET"
  }
}

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Tool Definition Schema

{
  "type": "function",
  "function": {
    "name": "tool_name",
    "description": "What this tool does",
    "parameters": {
      "type": "object",
      "properties": {
        "param1": {
          "type": "string",
          "description": "Parameter description"
        }
      },
      "required": ["param1"]
    }
  },
  "endpoint": "/api/endpoint/${pathParam}",
  "method": "POST",
  "pathParametersKeys": ["pathParam"],
  "queryParametersKeys": ["queryParam"],
  "bodyPropertyKey": "bodyParam",
  "bodyMode": "simple",
  "bodyJsonTemplate": "{ key: params.value }",
  "customHeaders": [
    {"headerName": "X-Custom-Header", "value": "custom-value"}
  ],
  "responsePostProcessingEnabled": true,
  "responsePostProcessingTemplate": "response.body.data"
}

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Parameter Handling

ModeDescription
Path ParametersUse ${paramName} in endpoint URL, list in pathParametersKeys
Query ParametersList parameter names in queryParametersKeys
Body (Simple)Specify parameter name in bodyPropertyKey
Body (Advanced)Use bodyJsonTemplate with JS expression, access via params.<name>

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Response Post-Processing

When enabled, transform the response using JavaScript expressions: 
// Extract data field
response.body.data

// Map to names only
response.body.items.map(i => i.name)

// Conditional
response.status === 200 ? response.body : {error: 'Failed'}

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Authentication Configuration

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JWT / Bearer Token

{
  "authenticationConfig": {
    "authenticationMethod": "jwt",
    "jwt": {
      "token": "your-api-token"
    }
  }
}

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Basic Auth

{
  "authenticationConfig": {
    "authenticationMethod": "basic",
    "basic": {
      "username": "api_user",
      "password": "secret_password"
    }
  }
}

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OAuth2

{
  "authenticationConfig": {
    "authenticationMethod": "oauth2",
    "oauth2": {
      "clientId": "client-id",
      "clientSecret": "client-secret",
      "refreshToken": "refresh-token",
      "refreshTokenEndpoint": "https://auth.example.com/token",
      "grant_type": "refresh_token"
    }
  }
}

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Custom Headers

{
  "authenticationConfig": {
    "authenticationMethod": "customHeader",
    "customHeader": {
      "headerName": "X-API-Key",
      "value": "your-api-key"
    }
  }
}

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See Also