add openapi agent toolkit

packages/components/nodes/agents/OpenAPIAgent/OpenAPIAgent.ts

@@ -0,0 +1,112 @@
+import { INode, INodeData, INodeParams } from '../../../src/Interface'
+import { AgentExecutor } from 'langchain/agents'
+import { getBaseClasses } from '../../../src/utils'
+import * as yaml from 'js-yaml'
+import { OpenAI } from 'langchain/llms/openai'
+import { JsonSpec, JsonObject } from 'langchain/tools'
+import { createOpenApiAgent, OpenApiToolkit } from 'langchain/agents'
+
+class OpenAPIAgent_Agents implements INode {
+    label: string
+    name: string
+    description: string
+    type: string
+    icon: string
+    category: string
+    baseClasses: string[]
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'OpenAPI Agent'
+        this.name = 'openAPIAgent'
+        this.type = 'AgentExecutor'
+        this.category = 'Agents'
+        this.icon = 'openapi.svg'
+        this.description = 'Conversational agent for a chat model. It will utilize chat specific prompts'
+        this.baseClasses = [this.type, ...getBaseClasses(AgentExecutor)]
+        this.inputs = [
+            {
+                label: 'YAML File',
+                name: 'yamlFile',
+                type: 'string',
+                placeholder: 'https://github.com/openai/openai-openapi/blob/master/openapi.yaml'
+            },
+            {
+                label: 'Headers',
+                name: 'headers',
+                type: 'string',
+                rows: 4,
+                default: `{
+    "Content-Type": "application/json",
+}`,
+                placeholder: `{
+    "Content-Type": "application/json",
+    "Authorization": "Bearer <api-key>",
+}`
+            },
+            {
+                label: 'Language Model',
+                name: 'model',
+                type: 'BaseLanguageModel'
+            }
+        ]
+    }
+
+    async init(nodeData: INodeData): Promise<any> {
+        /*
+        const model = nodeData.inputs?.model as BaseChatModel
+        const tools = nodeData.inputs?.tools as Tool[]
+        const memory = nodeData.inputs?.memory as BaseChatMemory
+        const humanMessage = nodeData.inputs?.humanMessage as string
+        const systemMessage = nodeData.inputs?.systemMessage as string
+
+        const obj: InitializeAgentExecutorOptions = {
+            agentType: 'chat-conversational-react-description',
+            verbose: true
+        }
+
+        const agentArgs: any = {}
+        if (humanMessage) {
+            agentArgs.humanMessage = humanMessage
+        }
+        if (systemMessage) {
+            agentArgs.systemMessage = systemMessage
+        }
+
+        if (Object.keys(agentArgs).length) obj.agentArgs = agentArgs
+
+        const executor = await initializeAgentExecutorWithOptions(tools, model, obj)
+        executor.memory = memory
+        return executor*/
+        return null
+    }
+
+    async run(nodeData: INodeData, input: string): Promise<string> {
+        let data: JsonObject
+        try {
+            // const yamlFile = fs.readFileSync("openai_openapi.yaml", "utf8");
+            data = yaml.load('https://github.com/openai/openai-openapi/blob/master/openapi.yaml') as JsonObject
+            if (!data) {
+                throw new Error('Failed to load OpenAPI spec')
+            }
+        } catch (e) {
+            console.error(e)
+            return ''
+        }
+
+        const headers = {
+            'Content-Type': 'application/json',
+            Authorization: `Bearer `
+        }
+        const model = new OpenAI({ temperature: 0 })
+        const toolkit = new OpenApiToolkit(new JsonSpec(data), model, headers)
+        const executor = createOpenApiAgent(model, toolkit)
+
+        const result = await executor.call({ input })
+        console.log(`Got output ${result.output}`)
+
+        return result?.output
+    }
+}
+
+module.exports = { nodeClass: OpenAPIAgent_Agents }

packages/components/nodes/agents/OpenAPIAgent/openapi.svg

@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-api" width="24" height="24" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
+   <path stroke="none" d="M0 0h24v24H0z" fill="none"></path>
+   <path d="M4 13h5"></path>
+   <path d="M12 16v-8h3a2 2 0 0 1 2 2v1a2 2 0 0 1 -2 2h-3"></path>
+   <path d="M20 8v8"></path>
+   <path d="M9 16v-5.5a2.5 2.5 0 0 0 -5 0v5.5"></path>
+</svg>

packages/components/package.json

@@ -27,6 +27,7 @@
         "dotenv": "^16.0.0",
         "express": "^4.17.3",
         "form-data": "^4.0.0",
+        "js-yaml": "^4.1.0",
         "langchain": "^0.0.63",
         "mammoth": "^1.5.1",
         "moment": "^2.29.3",
@@ -36,6 +37,7 @@
     },
     "devDependencies": {
         "@types/gulp": "4.0.9",
+        "@types/js-yaml": "^4.0.5",
         "@types/ws": "^8.5.3",
         "gulp": "^4.0.2",
         "typescript": "^4.8.4"