init

examples/agent-kit-langgraph/index.ts

@@ -0,0 +1,6 @@
+import { StateGraph } from "@langchain/langgraph";
+import { solanaAgentState } from "./utils/state";
+
+const workflow = new StateGraph(solanaAgentState);
+
+export const graph = workflow.compile();

examples/agent-kit-langgraph/langgraph.json

@@ -0,0 +1,7 @@
+{
+  "graphs": {
+    "solana-agent": "./index.ts:graph"
+  },
+  "env": ".env",
+  "node_version": "20"
+}

examples/agent-kit-langgraph/utils/model.ts

@@ -0,0 +1,12 @@
+import { ChatOpenAI } from "@langchain/openai";
+import "dotenv/config";
+
+export const gpt4o = new ChatOpenAI({
+  modelName: "gpt-4o",
+  apiKey: process.env.OPENAI_API_KEY!,
+});
+
+export const gpt4oMini = new ChatOpenAI({
+  modelName: "gpt-4o-mini",
+  apiKey: process.env.OPENAI_API_KEY!,
+});

examples/agent-kit-langgraph/utils/solanaAgent.ts

@@ -0,0 +1,7 @@
+import { SolanaAgentKit } from "../../../src/agent";
+
+export const agentKit = new SolanaAgentKit(
+  process.env.SOLANA_PRIVATE_KEY!,
+  process.env.RPC_URL!,
+  process.env.OPENAI_API_KEY!,
+);

examples/agent-kit-langgraph/utils/state.ts

@@ -0,0 +1,25 @@
+import { Annotation } from "@langchain/langgraph";
+import { BaseMessage } from "@langchain/core/messages";
+import { messagesStateReducer } from "@langchain/langgraph";
+
+export const solanaAgentState = Annotation.Root({
+  messages: Annotation<BaseMessage[]>({
+    reducer: messagesStateReducer,
+    default: () => [],
+  }),
+
+  isSolanaReadQuery: Annotation<boolean>({
+    reducer: (x, y) => y ?? x ?? false,
+    default: () => false,
+  }),
+
+  isSolanaWriteQuery: Annotation<boolean>({
+    reducer: (x, y) => y ?? x ?? false,
+    default: () => false,
+  }),
+
+  isGeneralQuery: Annotation<boolean>({
+    reducer: (x, y) => y ?? x ?? false,
+    default: () => false,
+  }),
+});

package.json

@@ -23,9 +23,9 @@
   "dependencies": {
     "@bonfida/spl-name-service": "^3.0.7",
     "@coral-xyz/anchor": "0.29",
-    "@langchain/core": "^0.3.18",
+    "@langchain/core": "^0.3.26",
     "@langchain/groq": "^0.1.2",
-    "@langchain/langgraph": "^0.2.27",
+    "@langchain/langgraph": "^0.2.34",
     "@langchain/openai": "^0.3.13",
     "@lightprotocol/compressed-token": "^0.17.1",
     "@lightprotocol/stateless.js": "^0.17.1",
@@ -56,13 +56,13 @@
     "@types/bn.js": "^5.1.5",
     "@types/chai": "^5.0.1",
     "@types/node": "^22.9.0",
-    "ts-node": "^10.9.2",
-    "typescript": "^5.7.2",
+    "@typescript-eslint/eslint-plugin": "^7.0.0",
+    "@typescript-eslint/parser": "^7.0.0",
     "eslint": "^8.56.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-prettier": "^5.1.3",
-    "@typescript-eslint/eslint-plugin": "^7.0.0",
-    "@typescript-eslint/parser": "^7.0.0",
-    "prettier": "^3.2.5"
+    "prettier": "^3.2.5",
+    "ts-node": "^10.9.2",
+    "typescript": "^5.7.2"
   }
 }

pnpm-lock.yaml

@@ -15,13 +15,13 @@ importers:
         specifier: '0.29'
         version: 0.29.0(bufferutil@4.0.8)(utf-8-validate@5.0.10)
       '@langchain/core':
-        specifier: ^0.3.18
+        specifier: ^0.3.26
         version: 0.3.26(openai@4.77.0(zod@3.24.1))
       '@langchain/groq':
         specifier: ^0.1.2
         version: 0.1.2(@langchain/core@0.3.26(openai@4.77.0(zod@3.24.1)))
       '@langchain/langgraph':
-        specifier: ^0.2.27
+        specifier: ^0.2.34
         version: 0.2.34(@langchain/core@0.3.26(openai@4.77.0(zod@3.24.1)))
       '@langchain/openai':
         specifier: ^0.3.13