Add ask prompt and metadata for tool orchestration guidance

This commit is contained in:
2026-04-22 19:01:43 +05:30
parent c2011173fb
commit adcbdc91c4
4 changed files with 108 additions and 127 deletions
+92
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@@ -0,0 +1,92 @@
/**
* Ask prompt for ask262 MCP server.
* Provides tool orchestration guidance for exploring ECMAScript spec.
*
* File name: ask.ts -> Prompt name: "ask"
*/
import { z } from "zod";
/**
* Arguments schema for the prompt.
*/
export const promptArgsSchema = {
question: z.string().describe("Question"),
};
/**
* Creates the prompt messages for tool orchestration guidance.
* @param question - The user's question to include in the prompt
* @returns Prompt content with user message and assistant orchestration guide
*/
export function createPrompt(question: string) {
return {
description: "Ask262 orchestration guide",
messages: [
{
role: "user" as const,
content: {
type: "text" as const,
text: question,
},
},
{
role: "assistant" as const,
content: {
type: "text" as const,
text: `I'll help you understand this from the ECMAScript specification using ask262 tools.
Available tools:
- ask262_search_spec_sections: Vector search to find relevant spec section ids
- ask262_get_section_content: Retrieve full text from a spec section id
- ask262_evaluate_in_engine262: Execute pure JS and capture which spec section ids are hit. Has 1-second timeout for safety.
I'll use one of these orchestration patterns:
PATTERN 1 - For "What happens when I run this code?" questions:
- Use ask262Debug.startImportant() and ask262Debug.stopImportant() in the code to mark only important sections.
- STEP 1: ask262_evaluate_in_engine262(code: markedCode)
- STEP 2: ask262_get_section_content(sectionIds: ["sec-1", "sec-2"], recursive: true)
- Explain which spec sections were hit and why
PATTERN 2 - For "How does X work?" questions:
- Flow A: Generate a specific code example and follow Pattern 1
- Flow B: If no code example possible, search broadly:
* STEP 1: ask262_search_spec_sections(query: "<relevant keywords>")
* STEP 2: ask262_get_section_content(sectionIds: ["sec-1", "sec-2"], recursive: true)
I prefer Pattern 1 when possible as it provides exact spec sections through execution.
Example - How inserting to array works?
- Maps to Pattern 2, Flow A:
- I'll generate this code:
\`\`\`
let arr = [];
ask262Debug.startImportant();
arr.push(1);
ask262Debug.stopImportant();
console.log(arr);
console.log(arr.length);
\`\`\`
- I'll run it through ask262_evaluate_in_engine262 to find important sections
- I'll get content for some of those sections with ask262_get_section_content
- I'll explain which sections were hit and how they relate to Array.prototype.push and length property
Key principles:
- Ignore internal knowledge about Javascript/ECMAScript - rely only on spec sections from tools
- Reference specific spec sections either by section id (sec-array.prototype.map) or number+name (e.g., "23.1.3.21 Array.prototype.map")
- If I can't generate a relevant code example, I'll ask you to provide one`,
},
},
],
};
}
/**
* Metadata for the prompt.
*/
export const promptMetadata = {
description:
"Explains JavaScript internals from the ECMAScript specification.",
argsSchema: promptArgsSchema,
};
+10
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@@ -0,0 +1,10 @@
/**
* Agent prompts index for ask262 MCP server.
* Exports all available prompts with proper naming conventions.
*/
export {
createPrompt as createAskPrompt,
promptArgsSchema as askPromptArgsSchema,
promptMetadata as askPromptMetadata,
} from "./ask.js";
+3 -70
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@@ -15,7 +15,7 @@ import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { WebStandardStreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/webStandardStreamableHttp.js"; import { WebStandardStreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/webStandardStreamableHttp.js";
import { Hono } from "hono"; import { Hono } from "hono";
import { cors } from "hono/cors"; import { cors } from "hono/cors";
import { z } from "zod"; import { askPromptMetadata, createAskPrompt } from "./agent-prompts/index.js";
import { import {
createEvaluateInEngine262Tool, createEvaluateInEngine262Tool,
createGetSectionContentTool, createGetSectionContentTool,
@@ -148,75 +148,8 @@ async function createMcpServer() {
); );
// Register prompt for tool orchestration guidance // Register prompt for tool orchestration guidance
server.registerPrompt( server.registerPrompt("ask", askPromptMetadata, async ({ question }) =>
"ask", createAskPrompt(question),
{
description:
"Explains JavaScript internals from the ECMAScript specification.",
argsSchema: {
question: z.string().describe("Question"),
},
},
async ({ question }) => ({
description: "Ask262 orchestration guide",
messages: [
{
role: "user",
content: {
type: "text",
text: question,
},
},
{
role: "assistant",
content: {
type: "text",
text: `I'll help you understand this from the ECMAScript specification using ask262 tools.
Available tools:
- ask262_search_spec_sections: Vector search to find relevant spec section ids
- ask262_get_section_content: Retrieve full text from a spec section id
- ask262_evaluate_in_engine262: Execute pure JS and capture which spec section ids are hit. Has 1-second timeout for safety.
I'll use one of these orchestration patterns:
PATTERN 1 - For "What happens when I run this code?" questions:
- Use ask262Debug.startImportant() and ask262Debug.stopImportant() in the code to mark only important sections.
- STEP 1: ask262_evaluate_in_engine262(code: markedCode)
- STEP 2: ask262_get_section_content(sectionIds: ["sec-1", "sec-2"], recursive: true)
- Explain which spec sections were hit and why
PATTERN 2 - For "How does X work?" questions:
- Flow A: Generate a specific code example and follow Pattern 1
- Flow B: If no code example possible, search broadly:
* STEP 1: ask262_search_spec_sections(query: "<relevant keywords>")
* STEP 2: ask262_get_section_content(sectionIds: ["sec-1", "sec-2"], recursive: true)
I prefer Pattern 1 when possible as it provides exact spec sections through execution.
Example - How inserting to array works?
- Maps to Pattern 2, Flow A:
- I'll generate this code:
\`\`\`
let arr = [];
ask262Debug.startImportant();
arr.push(1);
ask262Debug.stopImportant();
console.log(arr);
console.log(arr.length);
\`\`\`
- I'll run it through ask262_evaluate_in_engine262 to find important sections
- I'll get content for some of those sections with ask262_get_section_content
- I'll explain which sections were hit and how they relate to Array.prototype.push and length property
Key principles:
- Ignore internal knowledge about Javascript/ECMAScript - rely only on spec sections from tools
- Reference specific spec sections either by section id (sec-array.prototype.map) or number+name (e.g., "23.1.3.21 Array.prototype.map")
- If I can't generate a relevant code example, I'll ask you to provide one`,
},
},
],
}),
); );
return server; return server;
+3 -57
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@@ -10,7 +10,7 @@ import { fileURLToPath } from "node:url";
import * as lancedbSdk from "@lancedb/lancedb"; import * as lancedbSdk from "@lancedb/lancedb";
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js"; import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod"; import { askPromptMetadata, createAskPrompt } from "./agent-prompts/index.js";
import { import {
createEvaluateInEngine262Tool, createEvaluateInEngine262Tool,
createGetSectionContentTool, createGetSectionContentTool,
@@ -219,62 +219,8 @@ export async function main() {
); );
// Register prompt for tool orchestration guidance // Register prompt for tool orchestration guidance
server.registerPrompt( server.registerPrompt("ask", askPromptMetadata, async ({ question }) =>
"ask", createAskPrompt(question),
{
description:
"Explains JavaScript internals from the ECMAScript specification.",
argsSchema: {
question: z.string().describe("Question"),
},
},
async ({ question }) => ({
description: "Ask262 orchestration guide",
messages: [
{
role: "user",
content: {
type: "text",
text: question,
},
},
{
role: "assistant",
content: {
type: "text",
text: `I'll help you explore this using the ECMAScript specification. Let me orchestrate the ask262 tools to find accurate information.
Available tools:
- ask262_search_spec_sections: Vector search to find relevant spec section ids
- ask262_get_section_content: Retrieve full text from a spec section id
- ask262_evaluate_in_engine262: Execute pure JS and capture which spec section ids are hit. Has 1-second timeout for safety.
Based on your question: "${question}"
I'll use one of these orchestration patterns:
PATTERN 1 - For "What happens when I run this code?" questions:
- Use ask262Debug.startImportant() and ask262Debug.stopImportant() in the code to mark only important sections.
- STEP 1: ask262_evaluate_in_engine262(code: markedCode)
- STEP 2: ask262_get_section_content(sectionIds: [importantSections[0]], recursive: true)
- Explain which spec sections were hit and why
PATTERN 2 - For "How does X work?" questions (e.g., "${question}"):
- Flow A: Generate a specific code example and follow Pattern 1
- Flow B: If no code example possible, search broadly:
* STEP 1: ask262_search_spec_sections(query: relevant keywords from "${question}")
* STEP 2: ask262_get_section_content(sectionIds: [foundSectionId], recursive: true)
I prefer Pattern 1 when possible as it provides exact spec sections through execution.
Key principles:
- Ignore internal knowledge about Javascript/ECMAScript - rely only on spec sections from tools
- Reference specific spec sections by section id (sec-array.prototype.map) or number/name (e.g., "23.1.3.21 Array.prototype.map")
- If I can't generate a relevant code example, I'll ask you to provide one`,
},
},
],
}),
); );
// Use stdio transport for communication // Use stdio transport for communication