#!/usr/bin/env node
// Updated imports using the modern MCP SDK API
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";
// Node.js type declarations
import * as fs from 'fs/promises';
import * as path from 'path';
import { fileURLToPath } from 'url';
import { readFileSync, existsSync } from "fs";
// Define memory file path using environment variable with fallback
const parentPath = path.dirname(fileURLToPath(import.meta.url));
const defaultMemoryPath = path.join(parentPath, 'memory.json');
const defaultSessionsPath = path.join(parentPath, 'sessions.json');
// Properly handle absolute and relative paths for MEMORY_FILE_PATH
const MEMORY_FILE_PATH = process.env.MEMORY_FILE_PATH
? path.isAbsolute(process.env.MEMORY_FILE_PATH)
? process.env.MEMORY_FILE_PATH // Use absolute path as is
: path.join(process.cwd(), process.env.MEMORY_FILE_PATH) // Relative to current working directory
: defaultMemoryPath; // Default fallback
// Properly handle absolute and relative paths for SESSIONS_FILE_PATH
const SESSIONS_FILE_PATH = process.env.SESSIONS_FILE_PATH
? path.isAbsolute(process.env.SESSIONS_FILE_PATH)
? process.env.SESSIONS_FILE_PATH // Use absolute path as is
: path.join(process.cwd(), process.env.SESSIONS_FILE_PATH) // Relative to current working directory
: defaultSessionsPath; // Default fallback
// Student education specific entity types
const validEntityTypes = [
'course',
'assignment',
'exam',
'concept',
'resource',
'note',
'lecture',
'project',
'question',
'term',
'goal',
'professor',
'status', // Entity status
'priority' // Entity priority
];
// Function to validate entity type
function isValidEntityType(type) {
return validEntityTypes.includes(type);
}
// Explicit validation function for TypeScript
function validateEntityType(type) {
if (!isValidEntityType(type)) {
throw new Error(`Invalid entity type: ${type}. Valid types are: ${validEntityTypes.join(', ')}`);
}
}
// Student education specific relation types
const VALID_RELATION_TYPES = [
'enrolled_in', // Student is taking a course
'assigned_in', // Assignment is part of a course
'due_on', // Assignment/exam has specific due date
'covers', // Lecture/resource covers concept
'references', // Note references concept
'prerequisite_for', // Concept is foundation for another
'taught_by', // Course taught by professor
'scheduled_for', // Lecture/exam scheduled for specific time
'contains', // Course contains lectures/assignments
'requires', // Assignment requires specific concepts
'related_to', // Concept related to another concept
'created_for', // Note created for specific lecture
'studies', // Study session focuses on concept/exam
'helps_with', // Resource helps with assignment/concept
'submitted', // Assignment submitted on date
'part_of', // Entity is part of another entity
'included_in', // Included in a larger component
'follows', // Entity follows another in sequence
'attends', // Student attends lecture
'graded_with', // Assignment/exam graded with specific criteria
'has_status', // Entity has a specific status
'has_priority' // Entity has a specific priority
];
// Define valid status values for education entities
const VALID_STATUS_VALUES = ['not_started', 'in_progress', 'complete'];
// Define valid priority values for education entities
const VALID_PRIORITY_VALUES = ['low', 'high'];
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
// Collect tool descriptions from text files
const toolDescriptions = {
'startsession': '',
'loadcontext': '',
'deletecontext': '',
'buildcontext': '',
'advancedcontext': '',
'endsession': '',
};
for (const tool of Object.keys(toolDescriptions)) {
const descriptionFilePath = path.resolve(__dirname, `student_${tool}.txt`);
if (existsSync(descriptionFilePath)) {
toolDescriptions[tool] = readFileSync(descriptionFilePath, 'utf-8');
}
}
// The KnowledgeGraphManager class contains all operations to interact with the knowledge graph
class KnowledgeGraphManager {
async loadGraph() {
try {
const fileContent = await fs.readFile(MEMORY_FILE_PATH, 'utf-8');
return JSON.parse(fileContent);
}
catch (error) {
// If the file doesn't exist, return an empty graph
return {
entities: [],
relations: []
};
}
}
async saveGraph(graph) {
await fs.writeFile(MEMORY_FILE_PATH, JSON.stringify(graph, null, 2), 'utf-8');
}
// Initialize status and priority entities
async initializeStatusAndPriority() {
const graph = await this.loadGraph();
// Create status entities if they don't exist
for (const statusValue of VALID_STATUS_VALUES) {
const statusName = `status:${statusValue}`;
if (!graph.entities.some(e => e.name === statusName && e.entityType === 'status')) {
graph.entities.push({
name: statusName,
entityType: 'status',
observations: [`A ${statusValue} status value`]
});
}
}
// Create priority entities if they don't exist
for (const priorityValue of VALID_PRIORITY_VALUES) {
const priorityName = `priority:${priorityValue}`;
if (!graph.entities.some(e => e.name === priorityName && e.entityType === 'priority')) {
graph.entities.push({
name: priorityName,
entityType: 'priority',
observations: [`A ${priorityValue} priority value`]
});
}
}
await this.saveGraph(graph);
}
// Helper method to get status of an entity
async getEntityStatus(entityName) {
const graph = await this.loadGraph();
// Find status relation for this entity
const statusRelation = graph.relations.find(r => r.from === entityName &&
r.relationType === 'has_status');
if (statusRelation) {
// Extract status value from the status entity name (status:value)
return statusRelation.to.split(':')[1];
}
return null;
}
// Helper method to get priority of an entity
async getEntityPriority(entityName) {
const graph = await this.loadGraph();
// Find priority relation for this entity
const priorityRelation = graph.relations.find(r => r.from === entityName &&
r.relationType === 'has_priority');
if (priorityRelation) {
// Extract priority value from the priority entity name (priority:value)
return priorityRelation.to.split(':')[1];
}
return null;
}
// Helper method to set status of an entity
async setEntityStatus(entityName, statusValue) {
if (!VALID_STATUS_VALUES.includes(statusValue)) {
throw new Error(`Invalid status value: ${statusValue}. Valid values are: ${VALID_STATUS_VALUES.join(', ')}`);
}
const graph = await this.loadGraph();
// Remove any existing status relations for this entity
graph.relations = graph.relations.filter(r => !(r.from === entityName && r.relationType === 'has_status'));
// Add new status relation
graph.relations.push({
from: entityName,
to: `status:${statusValue}`,
relationType: 'has_status'
});
await this.saveGraph(graph);
}
// Helper method to set priority of an entity
async setEntityPriority(entityName, priorityValue) {
if (!VALID_PRIORITY_VALUES.includes(priorityValue)) {
throw new Error(`Invalid priority value: ${priorityValue}. Valid values are: ${VALID_PRIORITY_VALUES.join(', ')}`);
}
const graph = await this.loadGraph();
// Remove any existing priority relations for this entity
graph.relations = graph.relations.filter(r => !(r.from === entityName && r.relationType === 'has_priority'));
// Add new priority relation
graph.relations.push({
from: entityName,
to: `priority:${priorityValue}`,
relationType: 'has_priority'
});
await this.saveGraph(graph);
}
async createEntities(entities) {
const graph = await this.loadGraph();
// Validate entity names don't already exist
for (const entity of entities) {
if (graph.entities.some(e => e.name === entity.name)) {
throw new Error(`Entity with name ${entity.name} already exists`);
}
validateEntityType(entity.entityType);
}
// Add new entities
graph.entities.push(...entities);
// Save updated graph
await this.saveGraph(graph);
return graph;
}
async createRelations(relations) {
const graph = await this.loadGraph();
// Validate relations
for (const relation of relations) {
// Check if entities exist
if (!graph.entities.some(e => e.name === relation.from)) {
throw new Error(`Entity '${relation.from}' not found`);
}
if (!graph.entities.some(e => e.name === relation.to)) {
throw new Error(`Entity '${relation.to}' not found`);
}
if (!VALID_RELATION_TYPES.includes(relation.relationType)) {
throw new Error(`Invalid relation type: ${relation.relationType}. Valid types are: ${VALID_RELATION_TYPES.join(', ')}`);
}
// Check if relation already exists
if (graph.relations.some(r => r.from === relation.from &&
r.to === relation.to &&
r.relationType === relation.relationType)) {
throw new Error(`Relation from '${relation.from}' to '${relation.to}' with type '${relation.relationType}' already exists`);
}
}
// Add relations
graph.relations.push(...relations);
// Save updated graph
await this.saveGraph(graph);
return graph;
}
async addObservations(entityName, observations) {
const graph = await this.loadGraph();
// Find the entity
const entity = graph.entities.find(e => e.name === entityName);
if (!entity) {
throw new Error(`Entity '${entityName}' not found`);
}
// Add observations
entity.observations.push(...observations);
// Save updated graph
await this.saveGraph(graph);
return graph;
}
async deleteEntities(entityNames) {
const graph = await this.loadGraph();
// Remove the entities
graph.entities = graph.entities.filter(e => !entityNames.includes(e.name));
// Remove relations that involve the deleted entities
graph.relations = graph.relations.filter(r => !entityNames.includes(r.from) && !entityNames.includes(r.to));
await this.saveGraph(graph);
}
async deleteObservations(deletions) {
const graph = await this.loadGraph();
for (const deletion of deletions) {
const entity = graph.entities.find(e => e.name === deletion.entityName);
if (entity) {
// Remove the specified observations
entity.observations = entity.observations.filter(o => !deletion.observations.includes(o));
}
}
await this.saveGraph(graph);
}
async deleteRelations(relations) {
const graph = await this.loadGraph();
// Remove specified relations
graph.relations = graph.relations.filter(r => !relations.some(toDelete => r.from === toDelete.from &&
r.to === toDelete.to &&
r.relationType === toDelete.relationType));
await this.saveGraph(graph);
}
async readGraph() {
return this.loadGraph();
}
async searchNodes(query) {
const graph = await this.loadGraph();
// Split query into search terms
const terms = query.toLowerCase().split(/\s+/);
// Find matching entities
const matchingEntityNames = new Set();
for (const entity of graph.entities) {
// Check if all terms match
const matchesAllTerms = terms.every(term => {
// Check entity name
if (entity.name.toLowerCase().includes(term)) {
return true;
}
// Check entity type
if (entity.entityType.toLowerCase().includes(term)) {
return true;
}
// Check observations
for (const observation of entity.observations) {
if (observation.toLowerCase().includes(term)) {
return true;
}
}
return false;
});
if (matchesAllTerms) {
matchingEntityNames.add(entity.name);
}
}
// Find relations between matching entities
const matchingRelations = graph.relations.filter(r => matchingEntityNames.has(r.from) && matchingEntityNames.has(r.to));
// Return matching entities and their relations
return {
entities: graph.entities.filter(e => matchingEntityNames.has(e.name)),
relations: matchingRelations
};
}
async openNodes(names) {
const graph = await this.loadGraph();
// Find the specified entities
const entities = graph.entities.filter(e => names.includes(e.name));
// Find relations between the specified entities
const relations = graph.relations.filter(r => names.includes(r.from) && names.includes(r.to));
return {
entities,
relations
};
}
// Get summary of course including lectures, assignments, exams, textbooks
async getCourseOverview(courseName) {
const graph = await this.loadGraph();
// Find the course
const course = graph.entities.find(e => e.name === courseName && e.entityType === 'course');
if (!course) {
throw new Error(`Course '${courseName}' not found`);
}
// Find term this course belongs to
let term;
for (const relation of graph.relations) {
if (relation.relationType === 'part_of' && relation.from === courseName) {
const potentialTerm = graph.entities.find(e => e.name === relation.to && e.entityType === 'term');
if (potentialTerm) {
term = potentialTerm;
break;
}
}
}
// Find professor who teaches this course
let professor;
for (const relation of graph.relations) {
if (relation.relationType === 'taught_by' && relation.from === courseName) {
professor = graph.entities.find(e => e.name === relation.to && e.entityType === 'professor');
if (professor) {
break;
}
}
}
// Find lectures for this course
const lectures = [];
for (const relation of graph.relations) {
if (relation.relationType === 'part_of' && relation.to === courseName) {
const lecture = graph.entities.find(e => e.name === relation.from && e.entityType === 'lecture');
if (lecture) {
lectures.push(lecture);
}
}
}
// Sort lectures by date if available
lectures.sort((a, b) => {
const aDateObs = a.observations.find(o => o.startsWith('Date:'));
const bDateObs = b.observations.find(o => o.startsWith('Date:'));
if (aDateObs && bDateObs) {
const aDate = new Date(aDateObs.split(':')[1].trim());
const bDate = new Date(bDateObs.split(':')[1].trim());
return aDate.getTime() - bDate.getTime();
}
return 0;
});
// Find assignments for this course
const assignments = [];
for (const relation of graph.relations) {
if (relation.relationType === 'assigned_in' && relation.to === courseName) {
const assignment = graph.entities.find(e => e.name === relation.from && e.entityType === 'assignment');
if (assignment) {
assignments.push(assignment);
}
}
}
// Sort assignments by due date if available
assignments.sort((a, b) => {
const aDueDateObs = a.observations.find(o => o.startsWith('Due:'));
const bDueDateObs = b.observations.find(o => o.startsWith('Due:'));
if (aDueDateObs && bDueDateObs) {
const aDate = new Date(aDueDateObs.split(':')[1].trim());
const bDate = new Date(bDueDateObs.split(':')[1].trim());
return aDate.getTime() - bDate.getTime();
}
return 0;
});
// Find exams for this course
const exams = [];
for (const relation of graph.relations) {
if (relation.relationType === 'scheduled_for' && relation.from === courseName) {
const exam = graph.entities.find(e => e.name === relation.to && e.entityType === 'exam');
if (exam) {
exams.push(exam);
}
}
}
// Sort exams by date if available
exams.sort((a, b) => {
const aDateObs = a.observations.find(o => o.startsWith('Date:'));
const bDateObs = b.observations.find(o => o.startsWith('Date:'));
if (aDateObs && bDateObs) {
const aDate = new Date(aDateObs.split(':')[1].trim());
const bDate = new Date(bDateObs.split(':')[1].trim());
return aDate.getTime() - bDate.getTime();
}
return 0;
});
// Find concepts covered in this course
const concepts = [];
for (const relation of graph.relations) {
if (relation.relationType === 'covers' && relation.from === courseName) {
const concept = graph.entities.find(e => e.name === relation.to && e.entityType === 'concept');
if (concept) {
concepts.push(concept);
}
}
}
// Find resources for this course (textbooks, articles, etc.)
const resources = [];
for (const relation of graph.relations) {
if (relation.relationType === 'helps_with' && relation.to === courseName) {
const resource = graph.entities.find(e => e.name === relation.from && e.entityType === 'resource');
if (resource) {
resources.push(resource);
}
}
}
// Find notes for this course
const notes = [];
for (const relation of graph.relations) {
if (relation.relationType === 'created_for' && relation.to === courseName) {
const note = graph.entities.find(e => e.name === relation.from && e.entityType === 'note');
if (note) {
notes.push(note);
}
}
}
// Extract course info from observations
const courseCode = course.observations.find(o => o.startsWith('Code:'))?.split(':')[1].trim() || 'N/A';
const courseLocation = course.observations.find(o => o.startsWith('Location:'))?.split(':')[1].trim() || 'N/A';
const courseSchedule = course.observations.find(o => o.startsWith('Schedule:'))?.split(':')[1].trim() || 'N/A';
const courseStatus = course.observations.find(o => o.startsWith('Status:'))?.split(':')[1].trim() || 'N/A';
return {
course,
term,
professor,
info: {
code: courseCode,
location: courseLocation,
schedule: courseSchedule,
status: courseStatus
},
summary: {
lectureCount: lectures.length,
assignmentCount: assignments.length,
examCount: exams.length,
conceptCount: concepts.length,
resourceCount: resources.length,
noteCount: notes.length
},
lectures,
assignments,
exams,
concepts,
resources,
notes
};
}
// Returns assignments and exams with approaching due dates
async getUpcomingDeadlines(termName, courseName, daysAhead = 14) {
const graph = await this.loadGraph();
const today = new Date();
const endDate = new Date();
endDate.setDate(today.getDate() + daysAhead);
// Filter for specific term if provided
let relevantCourses = [];
if (termName) {
// Find the specific term
const term = graph.entities.find(e => e.name === termName && e.entityType === 'term');
if (!term) {
throw new Error(`Term '${termName}' not found`);
}
// Find courses in this term
for (const relation of graph.relations) {
if (relation.relationType === 'part_of' && relation.from === relation.to && relation.to === termName) {
const course = graph.entities.find(e => e.name === relation.from && e.entityType === 'course');
if (course) {
relevantCourses.push(course);
}
}
}
}
else {
// Get all courses if no term specified
relevantCourses = graph.entities.filter(e => e.entityType === 'course');
}
// Filter for specific course if provided
if (courseName) {
relevantCourses = relevantCourses.filter(c => c.name === courseName);
if (relevantCourses.length === 0) {
throw new Error(`Course '${courseName}' not found`);
}
}
// Find all assignments and exams for these courses
const deadlines = [];
for (const course of relevantCourses) {
// Find assignments for this course
for (const relation of graph.relations) {
if (relation.relationType === 'assigned_in' && relation.to === course.name) {
const assignment = graph.entities.find(e => e.name === relation.from && e.entityType === 'assignment');
if (assignment) {
// Check due date
const dueDateObs = assignment.observations.find(o => o.startsWith('Due:'));
if (dueDateObs) {
const dueDateStr = dueDateObs.split(':')[1].trim();
const dueDate = new Date(dueDateStr);
// Check if it's in our date range
if (dueDate >= today && dueDate <= endDate) {
const daysRemaining = Math.ceil((dueDate.getTime() - today.getTime()) / (1000 * 60 * 60 * 24));
deadlines.push({
entity: assignment,
dueDate,
course,
daysRemaining
});
}
}
}
}
}
// Find exams for this course
for (const relation of graph.relations) {
if (relation.relationType === 'scheduled_for' && relation.from === course.name) {
const exam = graph.entities.find(e => e.name === relation.to && e.entityType === 'exam');
if (exam) {
// Check exam date
const dateObs = exam.observations.find(o => o.startsWith('Date:'));
if (dateObs) {
const dateStr = dateObs.split(':')[1].trim();
const examDate = new Date(dateStr);
// Check if it's in our date range
if (examDate >= today && examDate <= endDate) {
const daysRemaining = Math.ceil((examDate.getTime() - today.getTime()) / (1000 * 60 * 60 * 24));
deadlines.push({
entity: exam,
dueDate: examDate,
course,
daysRemaining
});
}
}
}
}
}
}
// Sort by due date
deadlines.sort((a, b) => a.dueDate.getTime() - b.dueDate.getTime());
return {
deadlines,
startDate: today.toISOString().slice(0, 10),
endDate: endDate.toISOString().slice(0, 10),
courseFilter: courseName,
termFilter: termName,
count: deadlines.length
};
}
// Get detailed information about assignment status, including progress, related concepts, and resources
async getAssignmentStatus(assignmentName) {
const graph = await this.loadGraph();
// Find the assignment
const assignment = graph.entities.find(e => e.name === assignmentName && e.entityType === 'assignment');
if (!assignment) {
throw new Error(`Assignment '${assignmentName}' not found`);
}
// Find the course this assignment belongs to
let course;
for (const relation of graph.relations) {
if (relation.relationType === 'assigned_in' && relation.from === assignmentName) {
course = graph.entities.find(e => e.name === relation.to && e.entityType === 'course');
if (course) {
break;
}
}
}
// Get status using the relation-based approach
const status = await this.getEntityStatus(assignmentName) || 'not_started';
// Get priority using the relation-based approach
const priority = await this.getEntityPriority(assignmentName);
const dueDate = assignment.observations.find(o => o.startsWith('Due:'))?.split(':')[1].trim();
const pointsWorth = assignment.observations.find(o => o.startsWith('Points:'))?.split(':')[1].trim();
const instructions = assignment.observations.find(o => o.startsWith('Instructions:'))?.split(':')[1].trim();
// Calculate time remaining if due date exists
let timeRemaining = null;
let daysRemaining = null;
let isOverdue = false;
if (dueDate) {
const dueDateTime = new Date(dueDate).getTime();
const now = new Date().getTime();
timeRemaining = dueDateTime - now;
daysRemaining = Math.ceil(timeRemaining / (1000 * 60 * 60 * 24));
isOverdue = timeRemaining < 0;
}
// Find concepts related to this assignment
const concepts = [];
for (const relation of graph.relations) {
if (relation.relationType === 'covers' && relation.from === assignmentName) {
const concept = graph.entities.find(e => e.name === relation.to && e.entityType === 'concept');
if (concept) {
concepts.push(concept);
}
}
}
// Find resources that might help with this assignment
const resources = [];
// Direct resources for the assignment
for (const relation of graph.relations) {
if (relation.relationType === 'helps_with' && relation.to === assignmentName) {
const resource = graph.entities.find(e => e.name === relation.from && e.entityType === 'resource');
if (resource) {
resources.push(resource);
}
}
}
// Resources for concepts related to the assignment
for (const concept of concepts) {
for (const relation of graph.relations) {
if (relation.relationType === 'helps_with' && relation.to === concept.name) {
const resource = graph.entities.find(e => e.name === relation.from && e.entityType === 'resource');
if (resource && !resources.some(r => r.name === resource.name)) {
resources.push(resource);
}
}
}
}
// Find notes related to this assignment
const notes = [];
for (const relation of graph.relations) {
if (relation.relationType === 'created_for' && relation.to === assignmentName) {
const note = graph.entities.find(e => e.name === relation.from && e.entityType === 'note');
if (note) {
notes.push(note);
}
}
}
// Add notes related to concepts covered by the assignment
for (const concept of concepts) {
for (const relation of graph.relations) {
if (relation.relationType === 'references' && relation.to === concept.name) {
const note = graph.entities.find(e => e.name === relation.from && e.entityType === 'note');
if (note && !notes.some(n => n.name === note.name)) {
notes.push(note);
}
}
}
}
return {
assignment,
course,
info: {
status,
dueDate,
pointsWorth,
instructions,
timeRemaining,
daysRemaining,
isOverdue
},
concepts,
resources,
notes
};
}
// Get exam preparation resources, related concepts, and study plan
async getExamPrep(examName) {
const graph = await this.loadGraph();
// Find the exam
const exam = graph.entities.find(e => e.name === examName && e.entityType === 'exam');
if (!exam) {
throw new Error(`Exam '${examName}' not found`);
}
// Find the course this exam is for
let course;
for (const relation of graph.relations) {
if (relation.relationType === 'scheduled_for' && relation.to === examName) {
course = graph.entities.find(e => e.name === relation.from && e.entityType === 'course');
if (course) {
break;
}
}
}
// Get exam info from observations
const examDate = exam.observations.find(o => o.startsWith('Date:'))?.split(':')[1].trim();
const examLocation = exam.observations.find(o => o.startsWith('Location:'))?.split(':')[1].trim();
const examFormat = exam.observations.find(o => o.startsWith('Format:'))?.split(':')[1].trim();
const examDuration = exam.observations.find(o => o.startsWith('Duration:'))?.split(':')[1].trim();
// Calculate time remaining if exam date exists
let timeRemaining = null;
let daysRemaining = null;
if (examDate) {
const examDateTime = new Date(examDate).getTime();
const now = new Date().getTime();
timeRemaining = examDateTime - now;
daysRemaining = Math.ceil(timeRemaining / (1000 * 60 * 60 * 24));
}
// Find concepts covered in the exam
const concepts = [];
for (const relation of graph.relations) {
if (relation.relationType === 'covers' && relation.from === examName) {
const concept = graph.entities.find(e => e.name === relation.to && e.entityType === 'concept');
if (concept) {
concepts.push(concept);
}
}
}
// If no concepts directly related to exam, get concepts from the course
if (concepts.length === 0 && course) {
for (const relation of graph.relations) {
if (relation.relationType === 'covers' && relation.from === course.name) {
const concept = graph.entities.find(e => e.name === relation.to && e.entityType === 'concept');
if (concept) {
concepts.push(concept);
}
}
}
}
// Find resources helpful for the exam
const resources = [];
// Direct resources for the exam
for (const relation of graph.relations) {
if (relation.relationType === 'helps_with' && relation.to === examName) {
const resource = graph.entities.find(e => e.name === relation.from && e.entityType === 'resource');
if (resource) {
resources.push(resource);
}
}
}
// Resources for concepts covered by the exam
for (const concept of concepts) {
for (const relation of graph.relations) {
if (relation.relationType === 'helps_with' && relation.to === concept.name) {
const resource = graph.entities.find(e => e.name === relation.from && e.entityType === 'resource');
if (resource && !resources.some(r => r.name === resource.name)) {
resources.push(resource);
}
}
}
}
// Resources for the course
if (course) {
for (const relation of graph.relations) {
if (relation.relationType === 'helps_with' && relation.to === course.name) {
const resource = graph.entities.find(e => e.name === relation.from && e.entityType === 'resource');
if (resource && !resources.some(r => r.name === resource.name)) {
resources.push(resource);
}
}
}
}
// Find notes related to the exam
const notes = [];
// Direct notes for the exam
for (const relation of graph.relations) {
if (relation.relationType === 'created_for' && relation.to === examName) {
const note = graph.entities.find(e => e.name === relation.from && e.entityType === 'note');
if (note) {
notes.push(note);
}
}
}
// Notes for concepts covered in the exam
for (const concept of concepts) {
for (const relation of graph.relations) {
if (relation.relationType === 'references' && relation.to === concept.name) {
const note = graph.entities.find(e => e.name === relation.from && e.entityType === 'note');
if (note && !notes.some(n => n.name === note.name)) {
notes.push(note);
}
}
}
}
// Find previous exams for the course
const previousExams = [];
if (course) {
for (const relation of graph.relations) {
if (relation.relationType === 'scheduled_for' && relation.from === course.name && relation.to !== examName) {
const prevExam = graph.entities.find(e => e.name === relation.to && e.entityType === 'exam');
if (prevExam) {
const prevExamDate = prevExam.observations.find(o => o.startsWith('Date:'))?.split(':')[1].trim();
if (prevExamDate && new Date(prevExamDate) < new Date()) {
previousExams.push(prevExam);
}
}
}
}
}
// Find study sessions scheduled for this exam
// Note: We no longer use studySession entities, this section is removed
const studySessions = [];
// Get concepts covered in this exam
const conceptsCovered = [];
return {
exam,
course,
info: {
examDate,
examLocation,
examFormat,
examDuration,
timeRemaining,
daysRemaining
},
concepts,
resources,
notes,
previousExams,
studySessions,
summary: {
conceptCount: concepts.length,
resourceCount: resources.length,
noteCount: notes.length,
previousExamCount: previousExams.length,
studySessionCount: studySessions.length
}
};
}
// Find concepts related to a given concept and how they're connected
async findRelatedConcepts(conceptName, depth = 1) {
const graph = await this.loadGraph();
// Find the concept
const concept = graph.entities.find(e => e.name === conceptName && e.entityType === 'concept');
if (!concept) {
throw new Error(`Concept '${conceptName}' not found`);
}
// Initialize results
const relatedConcepts = [];
// Set to track processed concepts to avoid duplicates
const processedConcepts = new Set();
processedConcepts.add(conceptName);
// Queue of concepts to process with their current depth and path
const queue = [{ name: conceptName, currentDepth: 0, path: [] }];
// Process the queue
while (queue.length > 0) {
const { name, currentDepth, path } = queue.shift();
// Skip if we've reached max depth (except for the initial concept)
if (currentDepth > depth && name !== conceptName)
continue;
// Find the concept entity
const currentConcept = graph.entities.find(e => e.name === name && e.entityType === 'concept');
if (!currentConcept)
continue;
// Skip the initial concept for the results
if (name !== conceptName) {
// Find courses that cover this concept
const courses = [];
for (const relation of graph.relations) {
if (relation.relationType === 'covers' && relation.to === name) {
const course = graph.entities.find(e => e.name === relation.from && e.entityType === 'course');
if (course) {
courses.push(course);
}
}
}
// Find resources that help with this concept
const resources = [];
for (const relation of graph.relations) {
if (relation.relationType === 'helps_with' && relation.to === name) {
const resource = graph.entities.find(e => e.name === relation.from && e.entityType === 'resource');
if (resource) {
resources.push(resource);
}
}
}
relatedConcepts.push({
concept: currentConcept,
relationPath: [...path],
depth: currentDepth,
courses,
resources
});
}
// Find directly related concepts through 'related_to'
for (const relation of graph.relations) {
if (relation.relationType === 'related_to') {
let nextConcept = null;
// Check bidirectional relation
if (relation.from === name) {
nextConcept = relation.to;
}
else if (relation.to === name) {
nextConcept = relation.from;
}
if (nextConcept && !processedConcepts.has(nextConcept)) {
processedConcepts.add(nextConcept);
queue.push({
name: nextConcept,
currentDepth: currentDepth + 1,
path: [...path, `related_to ${nextConcept}`]
});
}
}
}
// Find prerequisites
for (const relation of graph.relations) {
if (relation.relationType === 'prerequisite_for') {
let nextConcept = null;
let relationDescription = '';
if (relation.from === name) {
nextConcept = relation.to;
relationDescription = `prerequisite_for ${nextConcept}`;
}
else if (relation.to === name) {
nextConcept = relation.from;
relationDescription = `${nextConcept} is_prerequisite_for this`;
}
if (nextConcept && !processedConcepts.has(nextConcept)) {
processedConcepts.add(nextConcept);
queue.push({
name: nextConcept,
currentDepth: currentDepth + 1,
path: [...path, relationDescription]
});
}
}
}
}
// Sort related concepts by depth
relatedConcepts.sort((a, b) => a.depth - b.depth);
return {
concept,
relatedConcepts,
summary: {
totalRelated: relatedConcepts.length,
maxDepth: depth
}
};
}
// Track lecture notes and find related concepts and resources
async trackLectureNotes(courseName) {
const graph = await this.loadGraph();
// Find the course
const course = graph.entities.find(e => e.name === courseName && e.entityType === 'course');
if (!course) {
throw new Error(`Course '${courseName}' not found`);
}
// Find lectures for this course
const lectures = [];
for (const relation of graph.relations) {
if (relation.relationType === 'part_of' && relation.to === courseName) {
const lecture = graph.entities.find(e => e.name === relation.from && e.entityType === 'lecture');
if (lecture) {
lectures.push(lecture);
}
}
}
// Sort lectures by date if available
lectures.sort((a, b) => {
const aDateObs = a.observations.find(o => o.startsWith('Date:'));
const bDateObs = b.observations.find(o => o.startsWith('Date:'));
if (aDateObs && bDateObs) {
const aDate = new Date(aDateObs.split(':')[1].trim());
const bDate = new Date(bDateObs.split(':')[1].trim());
return aDate.getTime() - bDate.getTime();
}
return 0;
});
// Create a structure to hold lecture data with notes and concepts
const lectureData = [];
for (const lecture of lectures) {
// Get details about the lecture
const lectureDate = lecture.observations.find(o => o.startsWith('Date:'))?.split(':')[1].trim();
const lectureTopic = lecture.observations.find(o => o.startsWith('Topic:'))?.split(':')[1].trim();
// Find notes for this lecture
const notes = [];
for (const relation of graph.relations) {
if (relation.relationType === 'created_for' && relation.to === lecture.name) {
const note = graph.entities.find(e => e.name === relation.from && e.entityType === 'note');
if (note) {
notes.push(note);
}
}
}
// Find concepts covered in this lecture
const concepts = [];
for (const relation of graph.relations) {
if (relation.relationType === 'covers' && relation.from === lecture.name) {
const concept = graph.entities.find(e => e.name === relation.to && e.entityType === 'concept');
if (concept) {
concepts.push(concept);
}
}
}
// Get resources related to this lecture
const resources = [];
for (const relation of graph.relations) {
if (relation.relationType === 'helps_with' && relation.to === lecture.name) {
const resource = graph.entities.find(e => e.name === relation.from && e.entityType === 'resource');
if (resource) {
resources.push(resource);
}
}
}
// Add resources related to concepts in this lecture
for (const concept of concepts) {
for (const relation of graph.relations) {
if (relation.relationType === 'helps_with' && relation.to === concept.name) {
const resource = graph.entities.find(e => e.name === relation.from && e.entityType === 'resource');
if (resource && !resources.some(r => r.name === resource.name)) {
resources.push(resource);
}
}
}
}
lectureData.push({
lecture,
info: {
date: lectureDate,
topic: lectureTopic
},
notes,
concepts,
resources,
summary: {
noteCount: notes.length,
conceptCount: concepts.length,
resourceCount: resources.length
}
});
}
return {
course,
lectures: lectureData,
summary: {
lectureCount: lectures.length,
totalNotes: lectureData.reduce((sum, ld) => sum + ld.notes.length, 0),
totalConcepts: lectureData.reduce((sum, ld) => sum + ld.concepts.length, 0)
}
};
}
// Get term overview including courses, progress, and important dates
async getTermOverview(termName) {
const graph = await this.loadGraph();
// Find the term
const term = graph.entities.find(e => e.name === termName && e.entityType === 'term');
if (!term) {
throw new Error(`Term '${termName}' not found`);
}
// Get term info
const startDate = term.observations.find(o => o.startsWith('StartDate:'))?.split(':')[1].trim();
const endDate = term.observations.find(o => o.startsWith('EndDate:'))?.split(':')[1].trim();
const status = term.observations.find(o => o.startsWith('Status:'))?.split(':')[1].trim() || 'in_progress';
// Find courses for this term
const courses = [];
for (const relation of graph.relations) {
if (relation.relationType === 'part_of' && relation.to === termName) {
const course = graph.entities.find(e => e.name === relation.from && e.entityType === 'course');
if (course) {
courses.push(course);
}
}
}
// Get detailed information for each course
const courseData = [];
for (const course of courses) {
// Get course info
const courseCode = course.observations.find(o => o.startsWith('Code:'))?.split(':')[1].trim();
const courseSchedule = course.observations.find(o => o.startsWith('Schedule:'))?.split(':')[1].trim();
const courseStatus = course.observations.find(o => o.startsWith('Status:'))?.split(':')[1].trim() || 'in_progress';
// Find professor
let professor;
for (const relation of graph.relations) {
if (relation.relationType === 'taught_by' && relation.from === course.name) {
professor = graph.entities.find(e => e.name === relation.to && e.entityType === 'professor');
if (professor) {
break;
}
}
}
// Find assignments for this course
const assignments = [];
for (const relation of graph.relations) {
if (relation.relationType === 'assigned_in' && relation.to === course.name) {
const assignment = graph.entities.find(e => e.name === relation.from && e.entityType === 'assignment');
if (assignment) {
assignments.push(assignment);
}
}
}
// Count completed and total assignments
const completedAssignments = assignments.filter(a => a.observations.find(o => o.startsWith('Status:'))?.split(':')[1].trim() === 'completed').length;
// Find exams for this course
const exams = [];
for (const relation of graph.relations) {
if (relation.relationType === 'scheduled_for' && relation.from === course.name) {
const exam = graph.entities.find(e => e.name === relation.to && e.entityType === 'exam');
if (exam) {
exams.push(exam);
}
}
}
// Sort exams by date
exams.sort((a, b) => {
const aDateObs = a.observations.find(o => o.startsWith('Date:'));
const bDateObs = b.observations.find(o => o.startsWith('Date:'));
if (aDateObs && bDateObs) {
const aDate = new Date(aDateObs.split(':')[1].trim());
const bDate = new Date(bDateObs.split(':')[1].trim());
return aDate.getTime() - bDate.getTime();
}
return 0;
});
// Get the next upcoming exam
const upcomingExam = exams.find(e => {
const dateObs = e.observations.find(o => o.startsWith('Date:'));
if (dateObs) {
const examDate = new Date(dateObs.split(':')[1].trim());
return examDate > new Date();
}
return false;
});
courseData.push({
course,
professor,
info: {
code: courseCode,
schedule: courseSchedule,
status: courseStatus
},
progress: {
completedAssignments,
totalAssignments: assignments.length,
completionRate: assignments.length > 0 ?
Math.round((completedAssignments / assignments.length) * 100) : 0
},
upcomingExam,
summary: {
assignmentCount: assignments.length,
examCount: exams.length
}
});
}
// Find all deadlines (assignments and exams) in this term
const allDeadlines = [];
// Current date for comparisons
const today = new Date();
// Process assignments
for (const course of courses) {
// Find assignments for this course
for (const relation of graph.relations) {
if (relation.relationType === 'assigned_in' && relation.to === course.name) {
const assignment = graph.entities.find(e => e.name === relation.from && e.entityType === 'assignment');
if (assignment) {
// Check due date
const dueDateObs = assignment.observations.find(o => o.startsWith('Due:'));
if (dueDateObs) {
const dueDateStr = dueDateObs.split(':')[1].trim();
const dueDate = new Date(dueDateStr);
// Only include future deadlines
if (dueDate >= today) {
const daysRemaining = Math.ceil((dueDate.getTime() - today.getTime()) / (1000 * 60 * 60 * 24));
allDeadlines.push({
entity: assignment,
type: 'assignment',
course,
date: dueDate,
daysRemaining
});
}
}
}
}
}
// Find exams for this course
for (const relation of graph.relations) {
if (relation.relationType === 'scheduled_for' && relation.from === course.name) {
const exam = graph.entities.find(e => e.name === relation.to && e.entityType === 'exam');
if (exam) {
// Check exam date
const dateObs = exam.observations.find(o => o.startsWith('Date:'));
if (dateObs) {
const dateStr = dateObs.split(':')[1].trim();
const examDate = new Date(dateStr);
// Only include future dates
if (examDate >= today) {
const daysRemaining = Math.ceil((examDate.getTime() - today.getTime()) / (1000 * 60 * 60 * 24));
allDeadlines.push({
entity: exam,
type: 'exam',
course,
date: examDate,
daysRemaining
});
}
}
}
}
}
}
// Sort all deadlines by date
allDeadlines.sort((a, b) => a.date.getTime() - b.date.getTime());
return {
term,
info: {
startDate,
endDate,
status
},
courses: courseData,
upcomingDeadlines: allDeadlines.slice(0, 10), // Return the next 10 deadlines
summary: {
courseCount: courses.length,
deadlineCount: allDeadlines.length
}
};
}
}
// Session management functions
async function loadSessionStates() {
try {
const fileContent = await fs.readFile(SESSIONS_FILE_PATH, 'utf-8');
const sessions = JSON.parse(fileContent);
// Convert from object to Map
const sessionsMap = new Map();
for (const [key, value] of Object.entries(sessions)) {
sessionsMap.set(key, value);
}
return sessionsMap;
}
catch (error) {
if (error instanceof Error && 'code' in error && error.code === "ENOENT") {
return new Map();
}
throw error;
}
}
async function saveSessionStates(sessionsMap) {
// Convert from Map to object
const sessions = {};
for (const [key, value] of sessionsMap.entries()) {
sessions[key] = value;
}
await fs.writeFile(SESSIONS_FILE_PATH, JSON.stringify(sessions, null, 2), 'utf-8');
}
// Generate a unique session ID
function generateSessionId() {
return `stud_${Date.now()}_${Math.random().toString(36).substring(2, 15)}`;
}
// Setup the MCP server
async function main() {
const knowledgeGraphManager = new KnowledgeGraphManager();
// Initialize status and priority entities
await knowledgeGraphManager.initializeStatusAndPriority();
// Helper function to get current term
async function getCurrentTerm() {
// Find the most recent term with status "active"
const termQuery = await knowledgeGraphManager.searchNodes("entityType:term status:active");
if (termQuery.entities.length > 0) {
return termQuery.entities[0].name;
}
return null;
}
// Create the MCP server using the new API
const server = new McpServer({
name: "Context Manager",
version: "1.0.0"
});
// Define a resource that exposes the entire graph
server.resource("graph", "graph://student", async (uri) => ({
contents: [{
uri: uri.href,
text: JSON.stringify(await knowledgeGraphManager.readGraph(), null, 2)
}]
}));
/**
* Load context for a specific entity
*/
server.tool("loadcontext", toolDescriptions["loadcontext"], {
entityName: z.string(),
entityType: z.enum(validEntityTypes).optional().describe("Type of entity to load, defaults to 'course'"),
sessionId: z.string().optional().describe("Session ID from startsession to track context loading")
}, async ({ entityName, entityType = "course", sessionId }) => {
try {
// Validate session if ID is provided
if (sessionId) {
const sessionStates = await loadSessionStates();
if (!sessionStates.has(sessionId)) {
console.warn(`Warning: Session ${sessionId} not found, but proceeding with context load`);
// Initialize it anyway for more robustness
sessionStates.set(sessionId, []);
await saveSessionStates(sessionStates);
}
// Track that this entity was loaded in this session
const sessionState = sessionStates.get(sessionId) || [];
const loadEvent = {
type: 'context_loaded',
timestamp: new Date().toISOString(),
entityName,
entityType
};
sessionState.push(loadEvent);
sessionStates.set(sessionId, sessionState);
await saveSessionStates(sessionStates);
}
// Get the entity
const entityGraph = await knowledgeGraphManager.searchNodes(entityName);
if (entityGraph.entities.length === 0) {
throw new Error(`Entity ${entityName} not found`);
}
// Find the exact entity by name (case-sensitive match)
const entity = entityGraph.entities.find(e => e.name === entityName);
if (!entity) {
throw new Error(`Entity ${entityName} not found`);
}
// Get status and priority
const status = await knowledgeGraphManager.getEntityStatus(entityName) || "not_started";
const priority = await knowledgeGraphManager.getEntityPriority(entityName);
// Format observations for display
const observationsList = entity.observations.length > 0
? entity.observations.map(obs => `- ${obs}`).join("\n")
: "No observations";
// Different context loading based on entity type
let contextMessage = "";
if (entityType === "course") {
// Get course overview
const courseOverview = await knowledgeGraphManager.getCourseOverview(entityName);
// Format course context message
const code = entity.observations.find(o => o.startsWith("Code:"))?.substring(5) || "No code";
const schedule = entity.observations.find(o => o.startsWith("Schedule:"))?.substring(9) || "No schedule";
const location = entity.observations.find(o => o.startsWith("Location:"))?.substring(9) || "No location";
// Format lectures
const lecturesText = courseOverview.lectures?.map((lecture) => {
return `- **${lecture.name}**: ${lecture.observations.join(", ")}`;
}).join("\n") || "No lectures found";
// Format assignments - use status relation
const assignmentsText = courseOverview.assignments?.map(async (assignment) => {
const assignmentStatus = await knowledgeGraphManager.getEntityStatus(assignment.name) || "not_started";
const assignmentPriority = await knowledgeGraphManager.getEntityPriority(assignment.name);
const priorityText = assignmentPriority ? `, Priority: ${assignmentPriority}` : "";
return `- **${assignment.name}** (Status: ${assignmentStatus}${priorityText}): ${assignment.observations.join(", ")}`;
});
const resolvedAssignmentsText = assignmentsText ?
await Promise.all(assignmentsText).then(texts => texts.join("\n")) :
"No assignments found";
// Format exams - use status relation
const examsText = courseOverview.exams?.map(async (exam) => {
const examStatus = await knowledgeGraphManager.getEntityStatus(exam.name) || "not_started";
return `- **${exam.name}** (Status: ${examStatus}): ${exam.observations.join(", ")}`;
});
const resolvedExamsText = examsText ?
await Promise.all(examsText).then(texts => texts.join("\n")) :
"No exams found";
// Format concepts
const conceptsText = courseOverview.concepts?.map((concept) => {
return `- **${concept.name}**: ${concept.observations.join(", ")}`;
}).join("\n") || "No concepts found";
// Format resources
const resourcesText = courseOverview.resources?.map((resource) => {
return `- **${resource.name}**: ${resource.observations.join(", ")}`;
}).join("\n") || "No resources found";
// Add professor info if available
const professorText = courseOverview.professor ?
`**Professor**: ${courseOverview.professor.name}
${courseOverview.professor.observations.join("\n")}` : "No professor information";
// Add term info if available
const termText = courseOverview.term ?
`**Term**: ${courseOverview.term.name}` : "No term information";
contextMessage = `# Course Context: ${entityName}
## Course Overview
- **Code**: ${code}
- **Status**: ${status}
- **Priority**: ${priority || "N/A"}
- **Schedule**: ${schedule}
- **Location**: ${location}
## Observations
${observationsList}
- ${termText}
- ${professorText}
## Lectures
${lecturesText}
## Assignments
${resolvedAssignmentsText}
## Exams
${resolvedExamsText}
## Key Concepts
${conceptsText}
## Resources
${resourcesText}`;
}
else if (entityType === "assignment") {
// Get assignment status
const assignmentStatus = await knowledgeGraphManager.getAssignmentStatus(entityName);
// Get course name
const courseName = assignmentStatus.course?.name || "Unknown course";
// Format assignment context using relations instead of observations
const dueDate = entity.observations.find(o => o.startsWith("Due:"))?.substring(4) || "No due date";
const points = entity.observations.find(o => o.startsWith("Points:"))?.substring(7) || "Not specified";
const instructions = entity.observations.find(o => o.startsWith("Instructions:"))?.substring(13) || "No instructions provided";
// Calculate time remaining
let timeRemainingText = "No due date specified";
if (assignmentStatus.timeRemaining !== null) {
if (assignmentStatus.isOverdue) {
timeRemainingText = `OVERDUE by ${Math.abs(assignmentStatus.daysRemaining)} days`;
}
else {
timeRemainingText = `${assignmentStatus.daysRemaining} days remaining`;
}
}
// Format related concepts
const conceptsText = assignmentStatus.concepts?.map((concept) => {
return `- **${concept.name}**: ${concept.observations.join(", ")}`;
}).join("\n") || "No related concepts found";
// Format related resources
const resourcesText = assignmentStatus.resources?.map((resource) => {
return `- **${resource.name}**: ${resource.observations.join(", ")}`;
}).join("\n") || "No resources found";
// Format notes
const notesText = assignmentStatus.notes?.map((note) => {
return `- **${note.name}**: ${note.observations.join(", ")}`;
}).join("\n") || "No notes found";
contextMessage = `# Assignment Context: ${entityName}
## Assignment Overview
- **Course**: ${courseName}
- **Status**: ${status}
- **Priority**: ${priority || "N/A"}
- **Due Date**: ${dueDate}
- **Points**: ${points}
- **Time Remaining**: ${timeRemainingText}
## Observations
${observationsList}
## Instructions
${instructions}
## Related Concepts
${conceptsText}
## Helpful Resources
${resourcesText}
## Your Notes
${notesText}`;
}
else if (entityType === "exam") {
// Get exam prep information
const examPrep = await knowledgeGraphManager.getExamPrep(entityName);
// Format exam context
const examDate = entity.observations.find(o => o.startsWith("Date:"))?.substring(5) || "No date scheduled";
const examLocation = entity.observations.find(o => o.startsWith("Location:"))?.substring(9) || "No location specified";
const examFormat = entity.observations.find(o => o.startsWith("Format:"))?.substring(7) || "No format specified";
const examDuration = entity.observations.find(o => o.startsWith("Duration:"))?.substring(9) || "No duration specified";
// Calculate time remaining
let timeRemainingText = "No exam date specified";
if (examPrep.daysRemaining !== null) {
timeRemainingText = `${examPrep.daysRemaining} days until exam`;
}
// Get course name
const courseName = examPrep.course?.name || "Unknown course";
// Format concepts covered
const conceptsText = examPrep.concepts?.map((concept) => {
return `- **${concept.name}**: ${concept.observations.join(", ")}`;
}).join("\n") || "No concepts listed";
// Format study resources
const resourcesText = examPrep.resources?.map((resource) => {
return `- **${resource.name}**: ${resource.observations.join(", ")}`;
}).join("\n") || "No resources found";
// Format lectures
const lecturesText = examPrep.lectures?.map((lecture) => {
return `- **${lecture.name}**: ${lecture.observations.join(", ")}`;
}).join("\n") || "No lectures found";
contextMessage = `# Exam Context: ${entityName}
## Exam Details
- **Course**: ${courseName}
- **Date**: ${examDate}
- **Time Remaining**: ${timeRemainingText}
- **Location**: ${examLocation}
- **Format**: ${examFormat}
- **Duration**: ${examDuration}
## Concepts to Study
${conceptsText}
## Key Lectures
${lecturesText}
## Study Resources
${resourcesText}`;
}
else if (entityType === "concept") {
// Get related concepts
const relatedConceptsData = await knowledgeGraphManager.findRelatedConcepts(entityName);
// Format concept context
const description = entity.observations.find(o => !o.startsWith("Level:")) || "No description available";
const level = entity.observations.find(o => o.startsWith("Level:"))?.substring(6) || "Beginner";
// Format related concepts
const relatedConceptsText = relatedConceptsData.relatedConcepts?.map((related) => {
return `- **${related.concept.name}**: ${related.relationPath.join(' → ')}`;
}).join("\n") || "No related concepts found";
// Format courses that cover this concept
const coursesText = relatedConceptsData.courses?.map((course) => {
return `- **${course.name}**: ${course.observations.join(", ")}`;
}).join("\n") || "No courses found";
// Format resources about this concept
const resourcesText = relatedConceptsData.resources?.map((resource) => {
return `- **${resource.name}**: ${resource.observations.join(", ")}`;
}).join("\n") || "No resources found";
contextMessage = `# Concept Context: ${entityName}
## Concept Details
- **Difficulty Level**: ${level}
- **Description**: ${description}
## Related Concepts
${relatedConceptsText}
## Covered in Courses
${coursesText}
## Learning Resources
${resourcesText}`;
}
else if (entityType === "term") {
// Get term overview
const termOverview = await knowledgeGraphManager.getTermOverview(entityName);
// Format term context
const startDate = entity.observations.find(o => o.startsWith("StartDate:"))?.substring(10) || "No start date";
const endDate = entity.observations.find(o => o.startsWith("EndDate:"))?.substring(8) || "No end date";
const status = entity.observations.find(o => o.startsWith("Status:"))?.substring(7) || "Unknown status";
// Format courses in this term
const coursesText = termOverview.courseData?.map((courseData) => {
return `- **${courseData.course.name}**: ${courseData.info.code || "No code"}, ${courseData.info.status}, ${courseData.progress.completionRate || 0}% complete`;
}).join("\n\n") || "No courses found";
// Format upcoming deadlines
const deadlinesText = termOverview.upcomingDeadlines?.map((deadline) => {
return `- **${deadline.entity.name}** (${deadline.entity.entityType})
Course: ${deadline.course.name}
Due: ${deadline.dueDate} (${deadline.daysRemaining} days remaining)`;
}).join("\n\n") || "No upcoming deadlines";
contextMessage = `# Term Context: ${entityName}
## Term Details
- **Start Date**: ${startDate}
- **End Date**: ${endDate}
- **Status**: ${status}
## Courses This Term
${coursesText}
## Upcoming Deadlines
${deadlinesText}`;
}
else {
// Generic entity context for other entity types
// Find all relations involving this entity
const relations = await knowledgeGraphManager.openNodes([entityName]);
// Build a text representation of related entities
const incomingRelations = relations.relations.filter(r => r.to === entityName);
const outgoingRelations = relations.relations.filter(r => r.from === entityName);
const incomingText = incomingRelations.map(rel => {
const sourceEntity = relations.entities.find(e => e.name === rel.from);
if (!sourceEntity)
return null;
return `- **${sourceEntity.name}** (${sourceEntity.entityType}) → ${rel.relationType} → ${entityName}`;
}).filter(Boolean).join("\n") || "No incoming relations";
const outgoingText = outgoingRelations.map(rel => {
const targetEntity = relations.entities.find(e => e.name === rel.to);
if (!targetEntity)
return null;
return `- **${entityName}** → ${rel.relationType} → **${targetEntity.name}** (${targetEntity.entityType})`;
}).filter(Boolean).join("\n") || "No outgoing relations";
// Format observations
const observationsText = entity.observations.map(obs => `- ${obs}`).join("\n") || "No observations";
contextMessage = `# Entity Context: ${entityName} (${entityType})
## Observations
${observationsText}
## Incoming Relations
${incomingText}
## Outgoing Relations
${outgoingText}`;
}
return {
content: [{
type: "text",
text: contextMessage
}]
};
}
catch (error) {
return {
content: [{
type: "text",
text: JSON.stringify({
success: false,
error: error instanceof Error ? error.message : String(error)
}, null, 2)
}]
};
}
});
// Helper function to process each stage of endsession
async function processStage(params, previousStages) {
// Process based on the stage
switch (params.stage) {
case "summary":
// Process summary stage
return {
stage: "summary",
stageNumber: params.stageNumber,
analysis: params.analysis || "",
stageData: params.stageData || {
summary: "",
duration: "",
course: ""
},
completed: !params.nextStageNeeded
};
case "conceptsLearned":
// Process concepts learned stage
return {
stage: "conceptsLearned",
stageNumber: params.stageNumber,
analysis: params.analysis || "",
stageData: params.stageData || { concepts: [] },
completed: !params.nextStageNeeded
};
case "assignmentUpdates":
// Process assignment updates stage
return {
stage: "assignmentUpdates",
stageNumber: params.stageNumber,
analysis: params.analysis || "",
stageData: params.stageData || { updates: [] },
completed: !params.nextStageNeeded
};
case "newConcepts":
// Process new concepts stage
return {
stage: "newConcepts",
stageNumber: params.stageNumber,
analysis: params.analysis || "",
stageData: params.stageData || { concepts: [] },
completed: !params.nextStageNeeded
};
case "courseStatus":
// Process course status stage
return {
stage: "courseStatus",
stageNumber: params.stageNumber,
analysis: params.analysis || "",
stageData: params.stageData || {
courseStatus: "",
courseObservation: ""
},
completed: !params.nextStageNeeded
};
case "assembly":
// Final assembly stage - compile all arguments for end-session
return {
stage: "assembly",
stageNumber: params.stageNumber,
analysis: "Final assembly of end-session arguments",
stageData: assembleEndSessionArgs(previousStages),
completed: true
};
default:
throw new Error(`Unknown stage: ${params.stage}`);
}
}
// Helper function to assemble the final end-session arguments
function assembleEndSessionArgs(stages) {
const summaryStage = stages.find(s => s.stage === "summary");
const conceptsLearnedStage = stages.find(s => s.stage === "conceptsLearned");
const assignmentUpdatesStage = stages.find(s => s.stage === "assignmentUpdates");
const newConceptsStage = stages.find(s => s.stage === "newConcepts");
const courseStatusStage = stages.find(s => s.stage === "courseStatus");
return {
summary: summaryStage?.stageData?.summary || "",
duration: summaryStage?.stageData?.duration || "unknown",
course: summaryStage?.stageData?.course || "",
conceptsLearned: JSON.stringify(conceptsLearnedStage?.stageData?.concepts || []),
assignmentUpdates: JSON.stringify(assignmentUpdatesStage?.stageData?.updates || []),
courseStatus: courseStatusStage?.stageData?.courseStatus || "",
courseObservation: courseStatusStage?.stageData?.courseObservation || "",
newConcepts: JSON.stringify(newConceptsStage?.stageData?.concepts || [])
};
}
/**
* End session by processing all stages and recording the final results.
* Only use this tool if the user asks for it.
*
* Usage examples:
*
* 1. Starting the end session process with the summary stage:
* {
* "sessionId": "stu_1234567890_abc123", // From startsession
* "stage": "summary",
* "stageNumber": 1,
* "totalStages": 6,
* "analysis": "Analyzed progress on studying for the final exam",
* "stageData": {
* "summary": "Reviewed course materials and completed practice problems",
* "duration": "2 hours",
* "focus": "Data Structures" // Course name
* },
* "nextStageNeeded": true, // More stages coming
* "isRevision": false
* }
*
* 2. Middle stage for concepts:
* {
* "sessionId": "stu_1234567890_abc123",
* "stage": "conceptsLearned",
* "stageNumber": 2,
* "totalStages": 6,
* "analysis": "Listed key concepts studied",
* "stageData": {
* "concepts": [
* "Balanced binary trees",
* "Red-black trees",
* "Tree traversal algorithms"
* ]
* },
* "nextStageNeeded": true,
* "isRevision": false
* }
*
* 3. Final assembly stage:
* {
* "sessionId": "stu_1234567890_abc123",
* "stage": "assembly",
* "stageNumber": 6,
* "totalStages": 6,
* "nextStageNeeded": false, // This completes the session
* "isRevision": false
* }
*/
server.tool("endsession", toolDescriptions["endsession"], {
sessionId: z.string().describe("The unique session identifier obtained from startsession"),
stage: z.string().describe("Current stage of analysis: 'summary', 'conceptsLearned', 'assignmentProgress', 'questions', 'nextSteps', or 'assembly'"),
stageNumber: z.number().int().positive().describe("The sequence number of the current stage (starts at 1)"),
totalStages: z.number().int().positive().describe("Total number of stages in the workflow (typically 5 for standard workflow)"),
analysis: z.string().optional().describe("Text analysis or observations for the current stage"),
stageData: z.record(z.string(), z.any()).optional().describe(`Stage-specific data structure - format depends on the stage type:
- For 'summary' stage: { summary: "Session summary text", duration: "2 hours", focus: "CourseName" }
- For 'conceptsLearned' stage: { concepts: ["Concept A", "Concept B", "Concept C"] }
- For 'assignmentProgress' stage: { assignments: [{ name: "Assignment1", status: "completed" }, { name: "Assignment2", status: "in_progress" }] }
- For 'questions' stage: { questions: ["Question about topic X", "Question about concept Y"] }
- For 'nextSteps' stage: { nextSteps: ["Review chapter 7", "Complete practice problems", "Attend office hours"] }
- For 'assembly' stage: no stageData needed - automatic assembly of previous stages`),
nextStageNeeded: z.boolean().describe("Whether additional stages are needed after this one (false for final stage)"),
isRevision: z.boolean().optional().describe("Whether this is revising a previous stage"),
revisesStage: z.number().int().positive().optional().describe("If revising, which stage number is being revised")
}, async (params) => {
try {
// Load session states from persistent storage
const sessionStates = await loadSessionStates();
// Validate session ID
if (!sessionStates.has(params.sessionId)) {
return {
content: [{
type: "text",
text: JSON.stringify({
success: false,
error: `Session with ID ${params.sessionId} not found. Please start a new session with startsession.`
}, null, 2)
}]
};
}
// Get or initialize session state
let sessionState = sessionStates.get(params.sessionId) || [];
// Process the current stage
const stageResult = await processStage(params, sessionState);
// Store updated state
if (params.isRevision && params.revisesStage) {
// Find the analysis stages in the session state
const analysisStages = sessionState.filter(item => item.type === 'analysis_stage') || [];
if (params.revisesStage <= analysisStages.length) {
// Replace the revised stage
analysisStages[params.revisesStage - 1] = {
type: 'analysis_stage',
...stageResult
};
}
else {
// Add as a new stage
analysisStages.push({
type: 'analysis_stage',
...stageResult
});
}
// Update the session state with the modified analysis stages
sessionState = [
...sessionState.filter(item => item.type !== 'analysis_stage'),
...analysisStages
];
}
else {
// Add new stage
sessionState.push({
type: 'analysis_stage',
...stageResult
});
}
// Update in persistent storage
sessionStates.set(params.sessionId, sessionState);
await saveSessionStates(sessionStates);
// Check if this is the final assembly stage and no more stages are needed
if (params.stage === "assembly" && !params.nextStageNeeded) {
// Get the assembled arguments
const args = stageResult.stageData;
try {
// Parse arguments
const summary = args.summary;
const duration = args.duration;
const course = args.course;
const conceptsLearned = args.conceptsLearned ? JSON.parse(args.conceptsLearned) : [];
const assignmentUpdates = args.assignmentUpdates ? JSON.parse(args.assignmentUpdates) : [];
const courseStatus = args.courseStatus;
const courseObservation = args.courseObservation;
const newConcepts = args.newConcepts ? JSON.parse(args.newConcepts) : [];
// Create concept entities for new concepts learned
const timestamp = new Date().getTime();
const conceptEntities = conceptsLearned.map((concept, i) => ({
name: `Concept_${timestamp}_${i + 1}`,
entityType: "concept",
observations: [concept]
}));
if (conceptEntities.length > 0) {
await knowledgeGraphManager.createEntities(conceptEntities);
// Link concepts to course
const conceptRelations = conceptEntities.map((concept) => ({
from: course,
to: concept.name,
relationType: "contains"
}));
await knowledgeGraphManager.createRelations(conceptRelations);
}
// Update assignment statuses using the relation-based approach
for (const assignment of assignmentUpdates) {
try {
// Map status values to standard status values
let statusValue;
switch (assignment.status.toLowerCase()) {
case "completed":
case "complete":
case "done":
case "finished":
case "submitted":
statusValue = "complete";
break;
case "in_progress":
case "started":
case "working":
case "active":
statusValue = "in_progress";
break;
default:
statusValue = "not_started";
}
// Set the status using the new method
await knowledgeGraphManager.setEntityStatus(assignment.name, statusValue);
// If completed, also create a 'resolves' relation to the course
if (statusValue === "complete") {
await knowledgeGraphManager.createRelations([{
from: course,
to: assignment.name,
relationType: "resolves"
}]);
}
}
catch (error) {
console.error(`Error updating status for assignment ${assignment.name}:`, error);
}
}
// Update course status using the relation-based approach
try {
// Map course status to standard values
let courseStatusValue;
switch (courseStatus.toLowerCase()) {
case "completed":
case "complete":
case "done":
case "finished":
courseStatusValue = "complete";
break;
case "in_progress":
case "active":
case "current":
courseStatusValue = "in_progress";
break;
default:
courseStatusValue = "not_started";
}
// Set the course status using the new method
await knowledgeGraphManager.setEntityStatus(course, courseStatusValue);
// Add observation if provided
if (courseObservation) {
await knowledgeGraphManager.addObservations(course, [courseObservation]);
}
}
catch (error) {
console.error(`Error updating status for course ${course}:`, error);
}
// Create new concept entities
if (newConcepts && newConcepts.length > 0) {
const newConceptEntities = newConcepts.map((concept) => ({
name: concept.name,
entityType: "concept",
observations: [concept.description]
}));
await knowledgeGraphManager.createEntities(newConceptEntities);
// Link concepts to course
const conceptRelations = newConceptEntities.map((concept) => ({
from: course,
to: concept.name,
relationType: "contains"
}));
await knowledgeGraphManager.createRelations(conceptRelations);
}
// Record session completion in persistent storage
sessionState.push({
type: 'session_completed',
timestamp: new Date().toISOString(),
summary: summary,
course: course
});
sessionStates.set(params.sessionId, sessionState);
await saveSessionStates(sessionStates);
// Prepare the summary message
const summaryMessage = `# Study Session Recorded
I've recorded your study session focusing on ${course}.
## Concepts Learned
${conceptsLearned.map((c) => `- ${c}`).join('\n') || "No specific concepts recorded."}
## Assignment Updates
${assignmentUpdates.map((a) => `- ${a.name}: ${a.status}`).join('\n') || "No assignment updates."}
## Course Status
Course ${course} has been updated to: ${courseStatus}
${newConcepts && newConcepts.length > 0 ? `## New Concepts Added
${newConcepts.map((c) => `- ${c.name}: ${c.description}`).join('\n')}` : "No new concepts added."}
## Session Summary
${summary}
Would you like me to perform any additional updates to your student knowledge graph?`;
// Return the final result with the session recorded message
return {
content: [{
type: "text",
text: JSON.stringify({
success: true,
stageCompleted: params.stage,
nextStageNeeded: false,
stageResult: stageResult,
sessionRecorded: true,
summaryMessage: summaryMessage
}, null, 2)
}]
};
}
catch (error) {
return {
content: [{
type: "text",
text: JSON.stringify({
success: false,
error: `Error recording study session: ${error instanceof Error ? error.message : String(error)}`
}, null, 2)
}]
};
}
}
else {
// This is not the final stage or more stages are needed
// Return intermediate result
return {
content: [{
type: "text",
text: JSON.stringify({
success: true,
stageCompleted: params.stage,
nextStageNeeded: params.nextStageNeeded,
stageResult: stageResult,
endSessionArgs: params.stage === "assembly" ? stageResult.stageData : null
}, null, 2)
}]
};
}
}
catch (error) {
return {
content: [{
type: "text",
text: JSON.stringify({
success: false,
error: error instanceof Error ? error.message : String(error)
}, null, 2)
}]
};
}
});
/**
* Start a new study session. Returns session ID, recent study sessions, active courses, and upcoming deadlines.
* The output allows the user to easily choose what to focus on and which specific context to load.
*/
server.tool("startsession", toolDescriptions["startsession"], {}, async () => {
try {
// Generate a unique session ID
const sessionId = generateSessionId();
// Get the current active term
const currentTerm = await getCurrentTerm();
// Get recent sessions from persistent storage instead of entities
const sessionStates = await loadSessionStates();
// Initialize the session state
sessionStates.set(sessionId, []);
await saveSessionStates(sessionStates);
// Convert sessions map to array, sort, and take most recent ones
const recentSessions = Array.from(sessionStates.entries())
.map(([id, stages]) => {
// Extract summary data from the first stage (if it exists)
const summaryStage = stages.find(s => s.stage === "summary");
return {
id,
course: summaryStage?.stageData?.course || "Unknown course",
summary: summaryStage?.stageData?.summary || "No summary available"
};
})
.slice(0, 3); // Default to 3 recent sessions
// Get active courses - look for courses with "in_progress" status
const allCoursesQuery = await knowledgeGraphManager.searchNodes("entityType:course");
const courses = [];
// Filter courses with active status using the relation
for (const course of allCoursesQuery.entities) {
const status = await knowledgeGraphManager.getEntityStatus(course.name);
if (status === "in_progress" || status === "active" || !status) {
courses.push(course);
}
}
// Get upcoming deadlines (default to 14 days)
const deadlines = await knowledgeGraphManager.getUpcomingDeadlines(currentTerm || undefined, undefined, 14);
// Get recent concepts studied
const recentConceptsQuery = await knowledgeGraphManager.searchNodes("entityType:concept");
const recentConcepts = recentConceptsQuery.entities.slice(0, 5);
// Prepare message content
const coursesText = courses.map(async (c) => {
const status = await knowledgeGraphManager.getEntityStatus(c.name) || "not_started";
const priority = await knowledgeGraphManager.getEntityPriority(c.name);
const priorityText = priority ? ` (Priority: ${priority})` : "";
const preview = c.observations.length > 0
? `${c.observations[0].substring(0, 60)}${c.observations[0].length > 60 ? '...' : ''}`
: "No description";
return `- **${c.name}** (Status: ${status}${priorityText}): ${preview}`;
});
const resolvedCoursesText = await Promise.all(coursesText);
const sessionsText = recentSessions.map(s => {
return `- ${s.course} - ${s.summary.substring(0, 60)}${s.summary.length > 60 ? '...' : ''}`;
}).join("\n");
const deadlinesText = deadlines.deadlines.map((d) => {
const daysUntil = d.daysRemaining;
return `- **${d.entity.name}** (${d.course.name}): Due in ${daysUntil} day${daysUntil !== 1 ? 's' : ''}`;
}).join("\n");
const conceptsText = recentConcepts.map(c => {
const preview = c.observations.length > 0
? `${c.observations[0].substring(0, 60)}${c.observations[0].length > 60 ? '...' : ''}`
: "No description";
return `- **${c.name}**: ${preview}`;
}).join("\n");
return {
content: [{
type: "text",
text: `# Choose what to focus on in this session
## Recent Study Sessions
${sessionsText || "No recent sessions found."}
## Current Courses
${resolvedCoursesText.join("\n") || "No active courses found."}
## Upcoming Deadlines (Next 14 Days)
${deadlinesText || "No upcoming deadlines in the next 14 days."}
## Recently Studied Concepts
${conceptsText || "No recently studied concepts found."}
To load the context for a specific entity, use the \`loadcontext\` tool with the entity name and session ID - ${sessionId}`
}]
};
}
catch (error) {
return {
content: [{
type: "text",
text: JSON.stringify({
success: false,
error: error instanceof Error ? error.message : String(error)
}, null, 2)
}]
};
}
});
/**
* Create new entities, relations, and observations.
*/
server.tool("buildcontext", toolDescriptions["buildcontext"], {
type: z.enum(["entities", "relations", "observations"]).describe("Type of creation operation: 'entities', 'relations', or 'observations'"),
data: z.array(z.any()).describe("Data for the creation operation, structure varies by type but must be an array")
}, async ({ type, data }) => {
try {
let result;
switch (type) {
case "entities":
// Validate entity types
for (const entity of data) {
validateEntityType(entity.entityType);
}
// Ensure entities match the Entity interface
const typedEntities = data.map((e) => ({
name: e.name,
entityType: e.entityType,
observations: e.observations
}));
result = await knowledgeGraphManager.createEntities(typedEntities);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, created: result }, null, 2)
}]
};
case "relations":
// Ensure relations match the Relation interface
const typedRelations = data.map((r) => ({
from: r.from,
to: r.to,
relationType: r.relationType
}));
result = await knowledgeGraphManager.createRelations(typedRelations);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, created: result }, null, 2)
}]
};
case "observations":
for (const item of data) {
if (item.entityName && Array.isArray(item.contents)) {
await knowledgeGraphManager.addObservations(item.entityName, item.contents);
}
}
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, message: "Added observations to entities" }, null, 2)
}]
};
default:
throw new Error(`Invalid type: ${type}. Must be 'entities', 'relations', or 'observations'.`);
}
}
catch (error) {
return {
content: [{
type: "text",
text: JSON.stringify({
success: false,
error: error instanceof Error ? error.message : String(error)
}, null, 2)
}]
};
}
});
/**
* Delete entities, relations, or observations.
*/
server.tool("deletecontext", toolDescriptions["deletecontext"], {
type: z.enum(["entities", "relations", "observations"]).describe("Type of deletion operation: 'entities', 'relations', or 'observations'"),
data: z.array(z.any()).describe("Data for the deletion operation, structure varies by type but must be an array")
}, async ({ type, data }) => {
try {
switch (type) {
case "entities":
await knowledgeGraphManager.deleteEntities(data);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, message: `Deleted ${data.length} entities` }, null, 2)
}]
};
case "relations":
// Ensure relations match the Relation interface
const typedRelations = data.map((r) => ({
from: r.from,
to: r.to,
relationType: r.relationType
}));
await knowledgeGraphManager.deleteRelations(typedRelations);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, message: `Deleted ${data.length} relations` }, null, 2)
}]
};
case "observations":
// Ensure deletions match the required interface
const typedDeletions = data.map((d) => ({
entityName: d.entityName,
observations: d.observations
}));
await knowledgeGraphManager.deleteObservations(typedDeletions);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, message: `Deleted observations from ${data.length} entities` }, null, 2)
}]
};
default:
throw new Error(`Invalid type: ${type}. Must be 'entities', 'relations', or 'observations'.`);
}
}
catch (error) {
return {
content: [{
type: "text",
text: JSON.stringify({
success: false,
error: error instanceof Error ? error.message : String(error)
}, null, 2)
}]
};
}
});
/**
* Get information about the knowledge graph, search for nodes, get course overview, get upcoming deadlines, get assignment status, get exam prep, find related concepts, track lecture notes, or get term overview.
*/
server.tool("advancedcontext", toolDescriptions["advancedcontext"], {
type: z.enum(["graph", "search", "nodes", "course", "deadlines", "assignment", "exam", "concepts", "lecture", "term"]).describe("Type of get operation: 'graph', 'search', 'nodes', 'course', 'deadlines', 'assignment', 'exam', 'concepts', 'lecture', or 'term'"),
params: z.record(z.string(), z.any()).describe("Parameters for the operation, structure varies by type")
}, async ({ type, params }) => {
try {
let result;
switch (type) {
case "graph":
result = await knowledgeGraphManager.readGraph();
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, graph: result }, null, 2)
}]
};
case "search":
result = await knowledgeGraphManager.searchNodes(params.query);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, results: result }, null, 2)
}]
};
case "nodes":
result = await knowledgeGraphManager.openNodes(params.names);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, nodes: result }, null, 2)
}]
};
case "course":
result = await knowledgeGraphManager.getCourseOverview(params.courseName);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, course: result }, null, 2)
}]
};
case "deadlines":
result = await knowledgeGraphManager.getUpcomingDeadlines(params.termName, params.courseName, params.daysAhead || 14);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, deadlines: result }, null, 2)
}]
};
case "assignment":
result = await knowledgeGraphManager.getAssignmentStatus(params.assignmentName);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, assignment: result }, null, 2)
}]
};
case "exam":
result = await knowledgeGraphManager.getExamPrep(params.examName);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, exam: result }, null, 2)
}]
};
case "concepts":
result = await knowledgeGraphManager.findRelatedConcepts(params.conceptName, params.depth || 1);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, concepts: result }, null, 2)
}]
};
case "lecture":
result = await knowledgeGraphManager.trackLectureNotes(params.courseName);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, lectures: result }, null, 2)
}]
};
case "term":
result = await knowledgeGraphManager.getTermOverview(params.termName);
return {
content: [{
type: "text",
text: JSON.stringify({ success: true, term: result }, null, 2)
}]
};
default:
throw new Error(`Invalid type: ${type}. Must be one of the supported get operation types.`);
}
}
catch (error) {
return {
content: [{
type: "text",
text: JSON.stringify({
success: false,
error: error instanceof Error ? error.message : String(error)
}, null, 2)
}]
};
}
});
// Start the server
try {
const transport = new StdioServerTransport();
await server.connect(transport);
}
catch (error) {
console.error("Error starting server:", error);
process.exit(1);
}
}
main().catch(error => {
console.error('Fatal error:', error);
process.exit(1);
});
// Export the KnowledgeGraphManager class for testing
export { KnowledgeGraphManager };