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kentcdoddskentcdodds
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log level is handled
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+3
-123
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16 files changed

+3
-123
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‎exercises/03.sampling/01.problem.simple/README.mdx‎

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@@ -85,18 +85,8 @@ void agent.server.server.sendLoggingMessage({
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Check the specification for more info:
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https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/logging#log-message-notifications
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To be able to send a logging message, you need to first advertise that we support logging and add support for the `SetLevelRequestSchema` request. You'll do this in <InlineFile file="./src/index.ts" />. As a general reminder, here's how you add request handlers:
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```ts
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// this.server.server to access the underlying server instance
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this.server.server.setRequestHandler(
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RequestSchema, // this is the request schema you're adding support for
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async (request) => {
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// do something with the request
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return // return the appropriate response
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},
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)
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```
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The SDK handles keeping track of the logging level and only sending messages if
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they are within the set logging level.
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---
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‎exercises/03.sampling/01.problem.simple/src/index.ts‎

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@@ -1,7 +1,5 @@
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import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
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import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'
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// 💰 you'll need this:
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// import { SetLevelRequestSchema } from '@modelcontextprotocol/sdk/types.js'
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import { DB } from './db/index.ts'
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import { initializePrompts } from './prompts.ts'
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import { initializeResources } from './resources.ts'
@@ -38,9 +36,6 @@ You can also help users add tags to their entries and get all tags for an entry.
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this.db = DB.getInstance(path)
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}
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async init() {
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// 🐨 add logging handler with this.server.server.setRequestHandler and the SetLevelRequestSchema
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// 🐨 the callback should set the loggingLevel in the state from request.params.level and return an empty object
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// 🦉 this is annoying, and hopefully can be managed by the SDK in the future: https://github.com/modelcontextprotocol/typescript-sdk/issues/871
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await initializeTools(this)
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await initializeResources(this)
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await initializePrompts(this)

‎exercises/03.sampling/01.problem.simple/src/sampling.ts‎

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Original file line numberDiff line numberDiff line change
@@ -13,6 +13,5 @@ export async function suggestTagsSampling(agent: EpicMeMCP, entryId: number) {
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// 🐨 logging message to send the model response to the client
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// 📜 https://modelcontextprotocol.io/specification/2025-06-18/server/utilities/logging#log-message-notifications
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// 💰 agent.server.server.sendLoggingMessage (with level of 'info', logger of 'sampling', and data with the model response)
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// 💰 only send the logging message if the agent.state.loggingLevel is 'debug' or 'info'
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// 🦉 This is kind of annoying, and hopefully can be managed by the SDK in the future: https://github.com/modelcontextprotocol/typescript-sdk/issues/871
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// 🦉 The SDK will make sure to only send messages if the logging level is 'debug' or 'info'
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}

‎exercises/03.sampling/01.solution.simple/src/index.ts‎

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@@ -1,6 +1,5 @@
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import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
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import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'
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import { SetLevelRequestSchema } from '@modelcontextprotocol/sdk/types.js'
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import { DB } from './db/index.ts'
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import { initializePrompts } from './prompts.ts'
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import { initializeResources } from './resources.ts'
@@ -37,13 +36,6 @@ You can also help users add tags to their entries and get all tags for an entry.
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this.db = DB.getInstance(path)
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}
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async init() {
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this.server.server.setRequestHandler(
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SetLevelRequestSchema,
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async (request) => {
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this.state.loggingLevel = request.params.level
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return {}
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},
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)
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await initializeTools(this)
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await initializeResources(this)
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await initializePrompts(this)

‎exercises/03.sampling/02.problem.advanced/src/index.ts‎

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@@ -1,6 +1,5 @@
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import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
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import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'
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import { SetLevelRequestSchema } from '@modelcontextprotocol/sdk/types.js'
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import { DB } from './db/index.ts'
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import { initializePrompts } from './prompts.ts'
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import { initializeResources } from './resources.ts'
@@ -37,13 +36,6 @@ You can also help users add tags to their entries and get all tags for an entry.
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this.db = DB.getInstance(path)
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}
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async init() {
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this.server.server.setRequestHandler(
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SetLevelRequestSchema,
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async (request) => {
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this.state.loggingLevel = request.params.level
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return {}
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},
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)
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await initializeTools(this)
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await initializeResources(this)
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await initializePrompts(this)

‎exercises/03.sampling/02.solution.advanced/src/index.ts‎

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@@ -1,6 +1,5 @@
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import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
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import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'
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import { SetLevelRequestSchema } from '@modelcontextprotocol/sdk/types.js'
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import { DB } from './db/index.ts'
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import { initializePrompts } from './prompts.ts'
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import { initializeResources } from './resources.ts'
@@ -37,13 +36,6 @@ You can also help users add tags to their entries and get all tags for an entry.
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this.db = DB.getInstance(path)
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}
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async init() {
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this.server.server.setRequestHandler(
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SetLevelRequestSchema,
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async (request) => {
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this.state.loggingLevel = request.params.level
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return {}
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},
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)
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await initializeTools(this)
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await initializeResources(this)
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await initializePrompts(this)

‎exercises/04.long-running-tasks/01.problem.progress/src/index.ts‎

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@@ -1,6 +1,5 @@
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import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
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import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'
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import { SetLevelRequestSchema } from '@modelcontextprotocol/sdk/types.js'
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import { DB } from './db/index.ts'
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import { initializePrompts } from './prompts.ts'
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import { initializeResources } from './resources.ts'
@@ -37,13 +36,6 @@ You can also help users add tags to their entries and get all tags for an entry.
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this.db = DB.getInstance(path)
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}
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async init() {
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this.server.server.setRequestHandler(
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SetLevelRequestSchema,
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async (request) => {
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this.state.loggingLevel = request.params.level
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return {}
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},
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)
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await initializeTools(this)
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await initializeResources(this)
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await initializePrompts(this)

‎exercises/04.long-running-tasks/01.solution.progress/src/index.ts‎

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@@ -1,6 +1,5 @@
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import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
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import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'
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import { SetLevelRequestSchema } from '@modelcontextprotocol/sdk/types.js'
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import { DB } from './db/index.ts'
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import { initializePrompts } from './prompts.ts'
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import { initializeResources } from './resources.ts'
@@ -37,13 +36,6 @@ You can also help users add tags to their entries and get all tags for an entry.
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this.db = DB.getInstance(path)
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}
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async init() {
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this.server.server.setRequestHandler(
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SetLevelRequestSchema,
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async (request) => {
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this.state.loggingLevel = request.params.level
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return {}
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},
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)
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await initializeTools(this)
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await initializeResources(this)
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await initializePrompts(this)

‎exercises/04.long-running-tasks/02.problem.cancellation/src/index.ts‎

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@@ -1,6 +1,5 @@
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import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
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import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'
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import { SetLevelRequestSchema } from '@modelcontextprotocol/sdk/types.js'
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import { DB } from './db/index.ts'
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import { initializePrompts } from './prompts.ts'
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import { initializeResources } from './resources.ts'
@@ -37,13 +36,6 @@ You can also help users add tags to their entries and get all tags for an entry.
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this.db = DB.getInstance(path)
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}
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async init() {
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this.server.server.setRequestHandler(
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SetLevelRequestSchema,
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async (request) => {
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this.state.loggingLevel = request.params.level
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return {}
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},
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)
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await initializeTools(this)
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await initializeResources(this)
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await initializePrompts(this)

‎exercises/04.long-running-tasks/02.solution.cancellation/src/index.ts‎

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@@ -1,6 +1,5 @@
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import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
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import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'
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import { SetLevelRequestSchema } from '@modelcontextprotocol/sdk/types.js'
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import { DB } from './db/index.ts'
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import { initializePrompts } from './prompts.ts'
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import { initializeResources } from './resources.ts'
@@ -37,13 +36,6 @@ You can also help users add tags to their entries and get all tags for an entry.
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this.db = DB.getInstance(path)
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}
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async init() {
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this.server.server.setRequestHandler(
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SetLevelRequestSchema,
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async (request) => {
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this.state.loggingLevel = request.params.level
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return {}
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},
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)
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await initializeTools(this)
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await initializeResources(this)
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await initializePrompts(this)

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