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fix llm streaming #88

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Merged
tlgimenes merged 1 commit into from
Jan 6, 2026
Merged

fix llm streaming #88

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29 changes: 14 additions & 15 deletions bun.lock
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
{
"lockfileVersion": 1,
"configVersion": 1,
"workspaces": {
"": {
"name": "@decocms/mcps",
Expand Down Expand Up @@ -227,11 +228,11 @@
"name": "openrouter",
"version": "1.0.0",
"dependencies": {
"@ai-sdk/provider": "^3.0.0",
"@ai-sdk/provider-utils": "^4.0.1",
"@ai-sdk/provider": "^3.0.2",
"@ai-sdk/provider-utils": "^4.0.4",
"@decocms/bindings": "^1.0.6",
"@decocms/runtime": "^1.1.0",
"@openrouter/ai-sdk-provider": "^1.2.0",
"@openrouter/ai-sdk-provider": "^1.5.4",
"@openrouter/sdk": "^0.1.11",
"ai": "^6.0.3",
"zod": "^4.0.0",
Expand Down Expand Up @@ -513,7 +514,7 @@

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Expand Down Expand Up @@ -1483,7 +1484,7 @@

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Expand Down Expand Up @@ -1511,7 +1512,7 @@

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Expand Down Expand Up @@ -2095,7 +2096,7 @@

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"postgres": ["[email protected].7", "", {}, "sha512-Jtc2612XINuBjIl/QTWsV5UvE8UHuNblcO3vVADSrKsrc6RqGX6lOW1cEo3CM2v0XG4Nat8nI+YM7/f26VxXLw=="],
"postgres": ["[email protected].8", "", {}, "sha512-d+JFcLM17njZaOLkv6SCev7uoLaBtfK86vMUXhW1Z4glPWh4jozno9APvW/XKFJ3CCxVoC7OL38BqRydtu5nGg=="],

"postgres-array": ["[email protected]", "", {}, "sha512-VpZrUqU5A69eQyW2c5CA1jtLecCsN2U/bD6VilrFDWq5+5UIEVO7nazS3TEcHf1zuPYO/sqGvUvW62g86RXZuA=="],

Expand Down Expand Up @@ -2703,8 +2704,6 @@

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"ai-v5/@ai-sdk/gateway": ["@ai-sdk/[email protected]", "", { "dependencies": { "@ai-sdk/provider": "2.0.0", "@ai-sdk/provider-utils": "3.0.17", "@vercel/oidc": "3.0.5" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-W+cB1sOWvPcz9qiIsNtD+HxUrBUva2vWv2K1EFukuImX+HA0uZx3EyyOjhYQ9gtf/teqEG80M6OvJ7xx/VLV2A=="],

"ai-v5/@ai-sdk/provider": ["@ai-sdk/[email protected]", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-6o7Y2SeO9vFKB8lArHXehNuusnpddKPk7xqL7T2/b+OvXMRIXUO1rR4wcv1hAFUAT9avGZshty3Wlua/XA7TvA=="],
Expand Down Expand Up @@ -2801,7 +2800,7 @@

"ora/chalk": ["[email protected]", "", { "dependencies": { "ansi-styles": "^4.1.0", "supports-color": "^7.1.0" } }, "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA=="],

"path-scurry/lru-cache": ["lru-cache@10.2.0", "", {}, "sha512-2bIM8x+VAf6JT4bKAljS1qUWgMsqZRPGJS6FSahIMPVvctcNhyVp7AJu7quxOW9jwkryBReKZY5tY5JYv2n/7Q=="],
"path-scurry/lru-cache": ["lru-cache@10.4.3", "", {}, "sha512-JNAzZcXrCt42VGLuYz0zfAzDfAvJWW6AfYlDBQyDV5DClI2m5sAmK+OIO7s59XfsRsWHp02jAJrRadPRGTt6SQ=="],

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Expand Down Expand Up @@ -3043,7 +3042,7 @@

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"google-calendar/@decocms/runtime/@ai-sdk/provider": ["@ai-sdk/[email protected].0", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-6o7Y2SeO9vFKB8lArHXehNuusnpddKPk7xqL7T2/b+OvXMRIXUO1rR4wcv1hAFUAT9avGZshty3Wlua/XA7TvA=="],
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"google-calendar/@decocms/runtime/@decocms/bindings": ["@decocms/[email protected]", "", { "dependencies": { "@modelcontextprotocol/sdk": "1.25.1", "zod": "^3.25.76", "zod-from-json-schema": "^0.0.5" } }, "sha512-0qGrAcH74Td9Ruhx7SI31o9mvKlMeQGtiRf5BzDcSgG0cvgJhaMMSvz72tvbUVl77GLu93v02NlKupui8yeiMw=="],

Expand Down Expand Up @@ -3091,19 +3090,19 @@

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"mcp-studio/@decocms/runtime/@ai-sdk/provider": ["@ai-sdk/[email protected].0", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-6o7Y2SeO9vFKB8lArHXehNuusnpddKPk7xqL7T2/b+OvXMRIXUO1rR4wcv1hAFUAT9avGZshty3Wlua/XA7TvA=="],
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"mcp-studio/@decocms/runtime/@decocms/bindings": ["@decocms/[email protected]", "", { "dependencies": { "@modelcontextprotocol/sdk": "1.25.1", "zod": "^3.25.76", "zod-from-json-schema": "^0.0.5" } }, "sha512-0qGrAcH74Td9Ruhx7SI31o9mvKlMeQGtiRf5BzDcSgG0cvgJhaMMSvz72tvbUVl77GLu93v02NlKupui8yeiMw=="],

"mcp-studio/@modelcontextprotocol/sdk/ajv": ["[email protected]", "", { "dependencies": { "fast-deep-equal": "^3.1.3", "fast-uri": "^3.0.1", "json-schema-traverse": "^1.0.0", "require-from-string": "^2.0.2" } }, "sha512-B/gBuNg5SiMTrPkC+A2+cW0RszwxYmn6VYxB/inlBStS5nx6xHIt/ehKRhIMhqusl7a8LjQoZnjCs5vhwxOQ1g=="],

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"meta-ads/@decocms/runtime/@decocms/bindings": ["@decocms/[email protected]", "", { "dependencies": { "@modelcontextprotocol/sdk": "1.25.1", "zod": "^3.25.76", "zod-from-json-schema": "^0.0.5" } }, "sha512-0qGrAcH74Td9Ruhx7SI31o9mvKlMeQGtiRf5BzDcSgG0cvgJhaMMSvz72tvbUVl77GLu93v02NlKupui8yeiMw=="],

"meta-ads/@modelcontextprotocol/sdk/ajv": ["[email protected]", "", { "dependencies": { "fast-deep-equal": "^3.1.3", "fast-uri": "^3.0.1", "json-schema-traverse": "^1.0.0", "require-from-string": "^2.0.2" } }, "sha512-B/gBuNg5SiMTrPkC+A2+cW0RszwxYmn6VYxB/inlBStS5nx6xHIt/ehKRhIMhqusl7a8LjQoZnjCs5vhwxOQ1g=="],

"openrouter/@decocms/runtime/@ai-sdk/provider": ["@ai-sdk/[email protected].0", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-6o7Y2SeO9vFKB8lArHXehNuusnpddKPk7xqL7T2/b+OvXMRIXUO1rR4wcv1hAFUAT9avGZshty3Wlua/XA7TvA=="],
"openrouter/@decocms/runtime/@ai-sdk/provider": ["@ai-sdk/[email protected].1", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-KCUwswvsC5VsW2PWFqF8eJgSCu5Ysj7m1TxiHTVA6g7k360bk0RNQENT8KTMAYEs+8fWPD3Uu4dEmzGHc+jGng=="],

"openrouter/@decocms/runtime/@decocms/bindings": ["@decocms/[email protected]", "", { "dependencies": { "@modelcontextprotocol/sdk": "1.25.1", "zod": "^3.25.76", "zod-from-json-schema": "^0.0.5" } }, "sha512-0qGrAcH74Td9Ruhx7SI31o9mvKlMeQGtiRf5BzDcSgG0cvgJhaMMSvz72tvbUVl77GLu93v02NlKupui8yeiMw=="],

Expand All @@ -3123,7 +3122,7 @@

"reddit/deco-cli/ws": ["[email protected]", "", { "peerDependencies": { "bufferutil": "^4.0.1", "utf-8-validate": ">=5.0.2" }, "optionalPeers": ["bufferutil", "utf-8-validate"] }, "sha512-blAT2mjOEIi0ZzruJfIhb3nps74PRWTCz1IjglWEEpQl5XS/UNama6u2/rjFkDDouqr4L67ry+1aGIALViWjDg=="],

"registry/@decocms/runtime/@ai-sdk/provider": ["@ai-sdk/[email protected].0", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-6o7Y2SeO9vFKB8lArHXehNuusnpddKPk7xqL7T2/b+OvXMRIXUO1rR4wcv1hAFUAT9avGZshty3Wlua/XA7TvA=="],
"registry/@decocms/runtime/@ai-sdk/provider": ["@ai-sdk/[email protected].1", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-KCUwswvsC5VsW2PWFqF8eJgSCu5Ysj7m1TxiHTVA6g7k360bk0RNQENT8KTMAYEs+8fWPD3Uu4dEmzGHc+jGng=="],

"registry/@decocms/runtime/@decocms/bindings": ["@decocms/[email protected]", "", { "dependencies": { "@modelcontextprotocol/sdk": "1.25.1", "zod": "^3.25.76", "zod-from-json-schema": "^0.0.5" } }, "sha512-0qGrAcH74Td9Ruhx7SI31o9mvKlMeQGtiRf5BzDcSgG0cvgJhaMMSvz72tvbUVl77GLu93v02NlKupui8yeiMw=="],

Expand Down
6 changes: 3 additions & 3 deletions openrouter/package.json
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,11 +12,11 @@
"check": "tsc --noEmit"
},
"dependencies": {
"@ai-sdk/provider": "^3.0.0",
"@ai-sdk/provider-utils": "^4.0.1",
"@ai-sdk/provider": "^3.0.2",
"@ai-sdk/provider-utils": "^4.0.4",
"@decocms/bindings": "^1.0.6",
"@decocms/runtime": "^1.1.0",
"@openrouter/ai-sdk-provider": "^1.2.0",
"@openrouter/ai-sdk-provider": "^1.5.4",
"@openrouter/sdk": "^0.1.11",
"ai": "^6.0.3",
"zod": "^4.0.0"
Expand Down
40 changes: 29 additions & 11 deletions openrouter/server/tools/llm-binding.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -9,9 +9,10 @@
* - LLM_DO_GENERATE: Generates complete non-streaming responses
*/

import type {
LanguageModelV2CallOptions,
LanguageModelV2StreamPart,
import {
APICallError,
type LanguageModelV2CallOptions,
type LanguageModelV2StreamPart,
} from "@ai-sdk/provider";
import {
LANGUAGE_MODEL_BINDING,
Expand Down Expand Up @@ -467,6 +468,12 @@ const getUsageFromStream = (
];
};

const isAPICallError = (error: unknown): error is APICallError =>
typeof error === "object" &&
error !== null &&
Symbol.for("vercel.ai.error") in error &&
Symbol.for("vercel.ai.error.AI_APICallError") in error;
Comment on lines +471 to +475
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@cubic-dev-ai cubic-dev-ai bot Jan 6, 2026 •
edited
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P2: Use APICallError.isInstance(error) instead of a custom symbol-based type guard. The AI SDK provides this static method specifically for type checking, and relying on internal symbols (Symbol.for('vercel.ai.error')) is fragile and could break with SDK updates.

Prompt for AI agents 
Check if this issue is valid — if so, understand the root cause and fix it. At openrouter/server/tools/llm-binding.ts, line 471:

<comment>Use `APICallError.isInstance(error)` instead of a custom symbol-based type guard. The AI SDK provides this static method specifically for type checking, and relying on internal symbols (`Symbol.for(&#39;vercel.ai.error&#39;)`) is fragile and could break with SDK updates.</comment>

<file context>
@@ -467,6 +468,12 @@ const getUsageFromStream = (
   ];
 };
 
+const isAPICallError = (error: unknown): error is APICallError =&gt;
+  typeof error === &quot;object&quot; &amp;&amp;
+  error !== null &amp;&amp;
</file context>
Suggested change
const isAPICallError = (error: unknown): error is APICallError =>
typeof error === "object" &&
error !== null &&
Symbol.for("vercel.ai.error") in error &&
Symbol.for("vercel.ai.error.AI_APICallError") in error;
const isAPICallError = (error: unknown): error is APICallError =>
APICallError.isInstance(error);
Fix with Cubic


/**
* LLM_DO_STREAM - Streams a language model response in real-time
*/
Expand All @@ -488,16 +495,27 @@ export const createLLMStreamTool = (env: Env) =>
const apiKey = getOpenRouterApiKey(env);
// Create OpenRouter provider
const openrouter = createOpenRouter({ apiKey });
const model = openrouter.languageModel(modelId);
const model = openrouter(modelId);

const callResponse = await model.doStream(
callOptions as LanguageModelV2CallOptions,
);
const [_, stream] = getUsageFromStream(callResponse.stream);
const response = streamToResponse(stream);
try {
const callResponse = await model.doStream(
callOptions as LanguageModelV2CallOptions,
);

// Return the data stream response
return response;
const [_, stream] = getUsageFromStream(callResponse.stream);
const response = streamToResponse(stream);

// Return the data stream response
return response;
} catch (error) {
if (isAPICallError(error)) {
return new Response(error.responseBody, {
status: error.statusCode,
headers: error.responseHeaders,
});
}
return new Response(String(error ?? "Unknown error"), { status: 500 });
}
},
});

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