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fix(ai-chat): ensure jsonSchema initialized before onChatMessage #979

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Merged
threepointone merged 1 commit into from
Feb 24, 2026
Merged

fix(ai-chat): ensure jsonSchema initialized before onChatMessage #979

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5 changes: 5 additions & 0 deletions .changeset/fix-jsonschema-init.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"@cloudflare/ai-chat": patch
---

Fix jsonSchema not initialized error when calling getAITools() in onChatMessage
3 changes: 3 additions & 0 deletions packages/ai-chat/src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -362,6 +362,9 @@ export class AIChatAgent<
// Wrap onMessage
const _onMessage = this.onMessage.bind(this);
this.onMessage = async (connection: Connection, message: WSMessage) => {
// Ensure jsonSchema is initialized for getAITools() (matches base Agent pattern)
await this.mcp.ensureJsonSchema();

// Handle AIChatAgent's internal messages first
if (typeof message === "string") {
let data: IncomingMessage;
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