Hallucination Detector

Hallucinated technical decisions destroy projects:

• Suggesting React when project uses Vue (wrong framework)
• Creating duplicate User entity when one already exists (duplicate schema)
• Recommending fake npm packages that don't exist (non-existent dependencies)
• Proposing PostgreSQL functions not available in project's version (incompatible APIs)
• Suggesting AWS services when project uses Google Cloud (wrong cloud provider)
• Inventing API endpoints that don't exist in external service (fake APIs)

This skill acts as a reality checker that:

1. Loads project's tech stack from docs/project/tech-stack.md (single source of truth)
2. Validates all technical suggestions against documented choices
3. Verifies entities, APIs, packages exist in codebase or documentation
4. Requires evidence/citations for all technical claims
5. Blocks suggestions that violate documented architecture
6. Corrects hallucinations with actual project technology

The result: Zero hallucinated tech decisions, implementation matches architecture, code that actually works.

Technology suggestions:

• "Use [framework/library]" → Validate against tech-stack.md
• "Install [npm package]" → Verify package exists, check compatibility
• "Import from [module]" → Verify module exists in dependencies

API/Service suggestions:

• "Call [API endpoint]" → Verify endpoint exists in API docs
• "Use [external service]" → Confirm service in tech-stack.md
• "Query [database function]" → Check function exists in DB version

Schema suggestions:

• "Create [Entity] model" → Check if entity already exists
• "Add [column] to [table]" → Verify table exists, column doesn't
• "Define [interface]" → Check for existing similar types

Pattern suggestions:

• "Follow [architecture pattern]" → Validate against system-architecture.md
• "Use [design pattern]" → Check if pattern aligns with project conventions

Step 2: Load tech stack from docs/project/tech-stack.md

# State Management
- **Library**: Zustand
- **Rationale**: Simpler than Redux, less boilerplate

Step 3: Validate suggestion against tech stack

• Suggested: Redux
• Documented: Zustand
• Mismatch detected: HALLUCINATION

Step 4: Block hallucinated suggestion

🚨 HALLUCINATION DETECTED

Suggested: Redux for state management
Reality: Project uses Zustand (documented in tech-stack.md)

Reason for Zustand (from tech-stack.md):
- Simpler than Redux
- Less boilerplate
- Already integrated in project

Corrected suggestion:
Use Zustand for state management (as documented)

Evidence: docs/project/tech-stack.md, line 23

Step 5: Provide correct suggestion

• AI: "I'll use Zustand for state management (project's documented choice)"

With hallucination-detector:

AI: "Let's use Redux for state management"
Detector: "🚨 HALLUCINATION: Project uses Zustand, not Redux (tech-stack.md)"
AI: "Corrected: I'll use Zustand for state management"
Developer: *Implements with Zustand correctly*
Result: Correct implementation on first try, zero refactoring

Read and parse docs/project/tech-stack.md:

# Technology Stack

## Frontend
- **Framework**: React 18.2
- **State Management**: Zustand 4.4
- **Routing**: React Router 6.x
- **HTTP Client**: Native fetch with custom wrapper
- **UI Library**: Tailwind CSS 3.x
- **Form Handling**: React Hook Form 7.x

## Backend
- **Runtime**: Node.js 20.x
- **Framework**: Express 4.18
- **Database**: PostgreSQL 15.2
- **ORM**: Prisma 5.x
- **Authentication**: JWT (jsonwebtoken)
- **Validation**: Zod 3.x

## Infrastructure
- **Cloud**: AWS
- **Hosting**: Vercel (frontend), Railway (backend)
- **Storage**: AWS S3
- **Database**: Supabase (managed PostgreSQL)

Parse into structured data:

const techStack = {
  frontend: {
    framework: { name: 'React', version: '18.2' },
    stateManagement: { name: 'Zustand', version: '4.4' },
    routing: { name: 'React Router', version: '6.x' },
    // ...
  },
  backend: {
    runtime: { name: 'Node.js', version: '20.x' },
    framework: { name: 'Express', version: '4.18' },
    database: { name: 'PostgreSQL', version: '15.2' },
    // ...
  },
  infrastructure: {
    cloud: 'AWS',
    hosting: { frontend: 'Vercel', backend: 'Railway' },
    // ...
  }
};

Pattern matching for technical claims:

Framework/library suggestions:

- "use React" → Extract: { type: 'framework', name: 'React' }
- "install redux" → Extract: { type: 'library', name: 'redux', category: 'state-management' }
- "import axios" → Extract: { type: 'library', name: 'axios', category: 'http-client' }

API endpoint suggestions:

- "call GET /api/users" → Extract: { type: 'api-endpoint', method: 'GET', path: '/api/users' }
- "Stripe API: createPaymentIntent" → Extract: { type: 'external-api', service: 'Stripe', method: 'createPaymentIntent' }

Database schema suggestions:

- "create User model" → Extract: { type: 'model', name: 'User' }
- "add email column to users" → Extract: { type: 'column', table: 'users', column: 'email' }
- "use ARRAY_AGG function" → Extract: { type: 'db-function', name: 'ARRAY_AGG' }

Cloud service suggestions:

- "use Google Cloud Storage" → Extract: { type: 'cloud-service', provider: 'Google Cloud', service: 'Storage' }
- "deploy to AWS Lambda" → Extract: { type: 'cloud-service', provider: 'AWS', service: 'Lambda' }

See references/detection-patterns.md for complete patterns.

Compare suggestion with documented choices:

Framework validation:

function validateFramework(suggested: string): ValidationResult {
  const documented = techStack.frontend.framework.name;

  if (suggested.toLowerCase() !== documented.toLowerCase()) {
    return {
      valid: false,
      severity: 'CRITICAL',
      message: `Suggested ${suggested}, but project uses ${documented}`,
      evidence: 'docs/project/tech-stack.md, line 5'
    };
  }

  return { valid: true };
}

Library validation:

function validateLibrary(category: string, suggested: string): ValidationResult {
  const documented = techStack.frontend[category]?.name;

  if (!documented) {
    return {
      valid: false,
      severity: 'HIGH',
      message: `No documented choice for ${category}. Verify before proceeding.`,
      action: 'CHECK_PACKAGE_JSON'
    };
  }

  if (suggested.toLowerCase() !== documented.toLowerCase()) {
    return {
      valid: false,
      severity: 'CRITICAL',
      message: `Suggested ${suggested}, but project uses ${documented} for ${category}`,
      evidence: 'docs/project/tech-stack.md'
    };
  }

  return { valid: true };
}

Version validation:

function validateVersion(lib: string, suggestedVersion: string): ValidationResult {
  const documented = findLibraryVersion(lib);

  if (documented && !isCompatible(suggestedVersion, documented)) {
    return {
      valid: false,
      severity: 'HIGH',
      message: `Suggested ${lib}@${suggestedVersion}, but project uses ${lib}@${documented}`,
      action: 'USE_DOCUMENTED_VERSION'
    };
  }

  return { valid: true };
}

Check if suggested entities already exist:

Model existence check:

async function doesModelExist(modelName: string): Promise<boolean> {
  // Check Prisma schema
  const schemaContent = await readFile('prisma/schema.prisma');
  const modelRegex = new RegExp(`model ${modelName}\\s*{`, 'i');
  if (schemaContent.match(modelRegex)) {
    return true;
  }

  // Check TypeScript interfaces
  const results = await grep(`interface ${modelName}`, '**/*.ts');
  return results.length > 0;
}

// Usage
if (await doesModelExist('User')) {
  return {
    valid: false,
    severity: 'CRITICAL',
    message: 'User model already exists in prisma/schema.prisma',
    action: 'REUSE_EXISTING_MODEL'
  };
}

API endpoint verification:

async function doesEndpointExist(method: string, path: string): Promise<boolean> {
  const pattern = `router\\.${method.toLowerCase()}\\(['"\`]${path}`;
  const results = await grep(pattern, '**/routes/**/*.ts');
  return results.length > 0;
}

External service verification:

async function isExternalServiceConfigured(service: string): Promise<boolean> {
  // Check environment variables
  const envContent = await readFile('.env.example');
  const serviceEnvVars = {
    'Stripe': 'STRIPE_',
    'SendGrid': 'SENDGRID_',
    'AWS S3': 'AWS_'
  };

  const prefix = serviceEnvVars[service];
  if (prefix) {
    return envContent.includes(prefix);
  }

  // Check package.json
  const pkg = await readJSON('package.json');
  const servicePkg = {
    'Stripe': 'stripe',
    'SendGrid': '@sendgrid/mail'
  };

  return pkg.dependencies?.[servicePkg[service]] !== undefined;
}

Every technical suggestion must be backed by evidence:

Package existence:

async function verifyPackageExists(packageName: string): Promise<Evidence> {
  try {
    // Query npm registry
    const response = await fetch(`https://registry.npmjs.org/${packageName}`);

    if (response.status === 404) {
      return {
        exists: false,
        message: `Package '${packageName}' does not exist on npm`,
        severity: 'CRITICAL'
      };
    }

    const data = await response.json();
    return {
      exists: true,
      latestVersion: data['dist-tags'].latest,
      description: data.description,
      url: `https://www.npmjs.com/package/${packageName}`
    };
  } catch (error) {
    return {
      exists: false,
      message: `Could not verify package '${packageName}'`,
      severity: 'HIGH',
      action: 'VERIFY_MANUALLY'
    };
  }
}

API documentation verification:

async function verifyAPIEndpoint(service: string, endpoint: string): Promise<Evidence> {
  const apiDocs = {
    'Stripe': 'https://stripe.com/docs/api',
    'GitHub': 'https://docs.github.com/rest'
  };

  const docsUrl = apiDocs[service];
  if (!docsUrl) {
    return {
      verified: false,
      message: `No API docs configured for ${service}`,
      action: 'PROVIDE_DOCUMENTATION_LINK'
    };
  }

  // For now, require manual verification
  return {
    verified: 'MANUAL_REQUIRED',
    message: `Verify ${endpoint} exists in ${service} API docs`,
    docsUrl: docsUrl
  };
}

Database function verification:

function verifyDatabaseFunction(dbType: string, functionName: string, version: string): Evidence {
  const postgresqlFunctions = {
    '15.2': ['ARRAY_AGG', 'STRING_AGG', 'JSON_BUILD_OBJECT', 'COALESCE'],
    '14.0': ['ARRAY_AGG', 'STRING_AGG', 'JSON_BUILD_OBJECT'],
    '13.0': ['ARRAY_AGG', 'STRING_AGG']
  };

  if (dbType === 'PostgreSQL') {
    const availableFunctions = postgresqlFunctions[version] || [];

    if (!availableFunctions.includes(functionName)) {
      return {
        exists: false,
        message: `Function '${functionName}' not available in PostgreSQL ${version}`,
        severity: 'HIGH',
        alternatives: availableFunctions
      };
    }
  }

  return { exists: true };
}

Based on validation results, take action:

CRITICAL hallucination (wrong tech stack):

🚨 HALLUCINATION BLOCKED

Suggested: Redux for state management
Reality: Project uses Zustand (tech-stack.md, line 7)

Why this is wrong:
- Redux is NOT in project dependencies (package.json)
- Zustand is already configured and used throughout codebase
- Mixing state management libraries creates inconsistency

Corrected implementation:
Use Zustand as documented:

import { create } from 'zustand';

const useStore = create((set) => ({
  count: 0,
  increment: () => set((state) => ({ count: state.count + 1 }))
}));

Evidence:
- Tech stack: docs/project/tech-stack.md, line 7
- Example usage: src/stores/userStore.ts
- Dependencies: package.json (zustand@4.4.0)

HIGH hallucination (duplicate entity):

⚠️ HALLUCINATION DETECTED

Suggested: Create User model
Reality: User model already exists

Existing model: prisma/schema.prisma, lines 15-25

model User {
  id        String   @id @default(uuid())
  email     String   @unique
  name      String
  createdAt DateTime @default(now())
}

Action: REUSE existing User model instead of creating duplicate

If you need additional fields, extend existing model:
- Add fields to existing User model
- Or create related model (UserProfile, UserSettings)

MEDIUM hallucination (undocumented choice):

ℹ️ VERIFICATION REQUIRED

Suggested: Axios for HTTP requests
Status: Not documented in tech-stack.md

Checking codebase...
- Found: Custom fetch wrapper in src/lib/api.ts
- Not found: Axios in package.json

Recommendation: Use existing fetch wrapper (project convention)

If Axios is needed:
1. Update tech-stack.md to document choice
2. Add rationale for using Axios over fetch
3. Get team approval
4. Then proceed with implementation

Detection:

Suggestion: "use Vue for the frontend"
Tech stack: "Framework: React 18.2"
Severity: CRITICAL (different framework)

Correction:

Use React (project's documented framework):

import React from 'react';

function MyComponent() {
  return <div>Hello</div>;
}

Detection:

const packageVerification = await npmRegistry.get('react-hooks-library');
// 404 Not Found

return {
  exists: false,
  severity: 'CRITICAL',
  message: 'Package does not exist on npm',
  suggestion: 'Did you mean "react-use"?'
};

Version incompatibilities:

Suggested: React 17.x
Project uses: React 18.2 (tech-stack.md)
Issue: Hooks API differences, breaking changes

Corrected: Use React 18.2 (project version)

Detection:

const endpointExists = await doesEndpointExist('GET', '/api/user/profile');
// false

const actualEndpoints = await grep('router.get.*user', '**/routes/*.ts');
// Found: GET /api/user/:id

return {
  exists: false,
  severity: 'HIGH',
  message: 'Endpoint does not exist',
  actual: 'GET /api/user/:id',
  evidence: 'routes/user.ts, line 15'
};

External API hallucinations:

Service: Stripe
Hallucinated method: Stripe.users.create()
Reality: Stripe has Customers, not Users
Actual method: Stripe.customers.create()

Evidence: https://stripe.com/docs/api/customers/create

Action: BLOCK duplicate entity creation

**Non-existent tables**:

Suggested: Add column to 'accounts' table Reality: Table is 'users', not 'accounts' (check schema)

Correction: users table (actual table name)

**Database function hallucinations**:

Suggested: Use JSON_ARRAYAGG() (MySQL function) Project uses: PostgreSQL 15.2 Actual function: ARRAY_AGG() (PostgreSQL equivalent)

Evidence:

• PostgreSQL 15.2 docs
• tech-stack.md: Database: PostgreSQL 15.2

</schema_hallucinations>

<cloud_service_hallucinations>
**Wrong cloud provider**:

Suggested: Google Cloud Storage Tech stack: AWS (S3 for storage)

Correction: Use AWS S3 (project's cloud provider) Evidence: tech-stack.md, infrastructure section

**Unavailable services**:

Suggested: Deploy to AWS Lambda Project hosting: Vercel (frontend), Railway (backend)

Reality: Project doesn't use Lambda Correction: Deploy backend to Railway (documented hosting)

</cloud_service_hallucinations>

<pattern_hallucinations>
**Architecture violations**:

Suggested: Add GraphQL endpoint Tech stack: REST API (Express) System architecture: RESTful architecture (system-architecture.md)

Correction: Implement as REST endpoint (project pattern)

**Convention violations**:

Suggested: Create service in /lib/services/ Convention: Services in /src/services/ (check existing code)

Correction: /src/services/ (project convention)

</pattern_hallucinations>
</detection_rules>

<auto_trigger_conditions>
<when_to_trigger>
**Technology suggestions**:
- "use [framework/library]"
- "install [package]"
- "import [module]"

**Implementation suggestions**:
- "create [model/entity]"
- "add [column/field]"
- "call [API endpoint]"

**Architecture suggestions**:
- "deploy to [service]"
- "use [cloud provider]"
- "follow [pattern]"

**Critical moments**:
- /plan phase (design decisions)
- /tasks phase (task breakdown with tech choices)
- /implement phase (actual code writing)
- Code review (validating implementation)
</when_to_trigger>

<when_not_to_trigger>
**Non-technical discussions**:
- User requirements
- Business logic
- UI/UX design
- Project management

**Documented exploration**:
- "Should we consider [alternative]?" (exploratory, not prescriptive)
- "What if we used [tech]?" (question, not suggestion)
</when_not_to_trigger>

<proactive_validation>
**Before /plan phase**:
```typescript
// Pre-load tech stack
const techStack = await loadTechStack('docs/project/tech-stack.md');

// Cache for phase
cache.set('tech-stack', techStack, { ttl: '1-hour' });

During implementation:

// Before suggesting framework
if (suggestion.includes('use React')) {
  const validated = validateFramework('React');
  if (!validated.valid) {
    blockSuggestion(validated.message);
  }
}

// Before suggesting package
if (suggestion.includes('install')) {
  const pkg = extractPackageName(suggestion);
  const exists = await verifyPackageExists(pkg);
  if (!exists.exists) {
    blockSuggestion(`Package ${pkg} does not exist`);
  }
}

// Before creating entity
if (suggestion.includes('create') && suggestion.includes('model')) {
  const entity = extractEntityName(suggestion);
  const duplicate = await doesModelExist(entity);
  if (duplicate) {
    blockSuggestion(`${entity} model already exists`);
  }
}

Conversation:

User: "Add state management for user authentication"
AI: "I'll use Redux to manage authentication state"

Hallucination detection:

// Load tech stack
const techStack = await loadTechStack('docs/project/tech-stack.md');
// → State Management: Zustand 4.4

// Detect suggestion
const suggestion = extractTech("use Redux");
// → { type: 'library', name: 'Redux', category: 'state-management' }

// Validate
const validation = validateLibrary('state-management', 'Redux');
// → { valid: false, documented: 'Zustand', severity: 'CRITICAL' }

Blocked response:

🚨 HALLUCINATION BLOCKED

Suggested: Redux for state management
Reality: Project uses Zustand (docs/project/tech-stack.md)

Why Zustand (from tech-stack.md):
- Simpler API than Redux
- Less boilerplate
- Better TypeScript support
- Already integrated throughout codebase

Corrected implementation:

import { create } from 'zustand';

interface AuthStore {
  user: User | null;
  login: (credentials: Credentials) => Promise<void>;
  logout: () => void;
}

export const useAuthStore = create<AuthStore>((set) => ({
  user: null,
  login: async (credentials) => {
    const user = await authService.login(credentials);
    set({ user });
  },
  logout: () => set({ user: null })
}));

Evidence:
- Tech stack: docs/project/tech-stack.md, line 7
- Example: src/stores/userStore.ts
- Dependencies: package.json

Conversation:

User: "Create a user authentication system"
AI: "First, I'll create the User model in Prisma schema"

Hallucination detection:

// Check if User model exists
const exists = await doesModelExist('User');
// → true (found in prisma/schema.prisma)

// Read existing model
const schemaContent = await readFile('prisma/schema.prisma');
const userModel = extractModel(schemaContent, 'User');

Blocked response:

⚠️ HALLUCINATION DETECTED

Suggested: Create User model
Reality: User model already exists

Existing model (prisma/schema.prisma, lines 15-25):

model User {
  id        String   @id @default(uuid())
  email     String   @unique
  name      String?
  password  String
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
}

Action: REUSE existing User model

For authentication, extend with:
- Add 'role' field if needed
- Create Session model (related to User)
- Add authentication methods to UserService

Do NOT create duplicate User model.

Conversation:

User: "Integrate Stripe payments"
AI: "Call Stripe.charges.create() to create a payment"

Hallucination detection:

// Verify Stripe API method
const stripeVersion = await getPackageVersion('stripe');
// → 14.0.0

// Check Stripe docs
const method = 'Stripe.charges.create';
const deprecated = isStripeMethodDeprecated(method, stripeVersion);
// → true (deprecated in favor of PaymentIntents API)

Blocked response:

🚨 HALLUCINATION DETECTED

Suggested: Stripe.charges.create()
Reality: Charges API is legacy (deprecated)
Current API: Payment Intents API

Modern approach (Stripe 14.x):

const stripe = new Stripe(process.env.STRIPE_SECRET_KEY);

// Create PaymentIntent (NOT charge)
const paymentIntent = await stripe.paymentIntents.create({
  amount: 1000,
  currency: 'usd',
  payment_method_types: ['card']
});

Why PaymentIntents over Charges:
- Better error handling
- Supports 3D Secure authentication
- More flexible payment flows
- Required for SCA compliance

Evidence:
- Stripe docs: https://stripe.com/docs/payments/payment-intents
- Migration guide: https://stripe.com/docs/payments/payment-intents/migration
- Project Stripe version: package.json (stripe@14.0.0)

Conversation:

User: "Add React hooks for data fetching"
AI: "Use React.useFetch() hook"

Hallucination detection:

// Check React version
const reactVersion = await getPackageVersion('react');
// → 18.2.0

// Verify hook exists
const hookExists = doesReactHookExist('useFetch', reactVersion);
// → false (useFetch doesn't exist in React)

Blocked response:

🚨 HALLUCINATION DETECTED

Suggested: React.useFetch() hook
Reality: useFetch() does not exist in React

React 18.2 built-in hooks:
- useState, useEffect, useContext
- useReducer, useCallback, useMemo
- useRef, useImperativeHandle
- useLayoutEffect, useDebugValue
- useId, useTransition, useDeferredValue

For data fetching, project uses:
- Custom hook: src/hooks/useFetch.ts
- Or: React Query (if installed)

Corrected implementation:

import { useFetch } from '@/hooks/useFetch';

function MyComponent() {
  const { data, loading, error } = useFetch('/api/users');

  if (loading) return <div>Loading...</div>;
  if (error) return <div>Error: {error.message}</div>;

  return <div>{data.map(...)}</div>;
}

Evidence:
- React docs: https://react.dev/reference/react
- Custom hook: src/hooks/useFetch.ts
- React version: package.json (react@18.2.0)

Bad approach:

AI: "I'll use Redux for state management"
(Didn't check tech-stack.md first)

Correct approach:

AI: *Loads docs/project/tech-stack.md*
AI: "Tech stack specifies Zustand for state management. I'll use Zustand."

Rule: ALWAYS load and validate against tech-stack.md before suggesting technology.

Bad approach:

AI: "Install react-super-hooks library"
(Package doesn't exist)

Correct approach:

AI: *Verifies package on npm registry*
AI: "Package 'react-super-hooks' not found. Did you mean 'react-use'?"

Rule: Verify package existence before suggesting installation.

Bad approach:

AI: "Create User model"
(User model already exists in schema)

Correct approach:

AI: *Searches codebase for User model*
AI: "User model already exists (prisma/schema.prisma). I'll reuse it."

Rule: Check for existing entities before creating new ones.

Bad approach:

Project uses: React
AI suggests: Vue components alongside React

Correct approach:

AI: "Project uses React. All components must be React components."

Rule: Maintain consistency with documented tech stack.

Bad approach:

AI: "Call Stripe.users.create()"
(Stripe has customers, not users)

Correct approach:

AI: *Checks Stripe API documentation*
AI: "Use Stripe.customers.create() (Stripe uses 'customers' not 'users')"

Rule: Verify external API methods against official documentation.

1. Zero tech stack violations: All suggestions match tech-stack.md
2. Zero duplicate entities: No redundant models/schemas created
3. Zero fake packages: All suggested packages exist and are verified
4. Zero API hallucinations: All API calls verified against documentation
5. Evidence required: Every technical claim backed by citation
6. Proactive detection: Triggers before suggestion, not after implementation
7. Clear corrections: Hallucinations blocked with correct alternatives provided

Detection metrics:

{
  totalSuggestions: 150,
  hallucinationsDetected: 12,
  hallucinationRate: 0.08,  // 8%
  byType: {
    wrongFramework: 3,
    duplicateEntity: 4,
    fakePackage: 2,
    fakeAPI: 3
  }
}

Prevention metrics:

{
  hallucinationsBlocked: 12,
  hallucinationsCorrected: 12,
  implementationErrors: 0,  // No wrong tech made it to code
  refactorsAvoided: 12  // Would have needed refactoring
}

Time savings:

{
  avgRefactorTime: 180,  // 3 hours per hallucination
  refactorsAvoided: 12,
  timeSaved: 2160,  // 36 hours saved
  timeSavedHours: 36
}

Technology:

• Validated against tech-stack.md
• Package exists on npm (if applicable)
• Version compatible with project
• No mixing of incompatible tech

Entities/Schema:

• Checked for duplicates in codebase
• Verified table/model names
• Confirmed database functions exist in project's DB version

APIs:

• Endpoint exists in routes (internal API)
• Method exists in official docs (external API)
• API version compatible

Evidence:

• Citation provided (file path, line number, or URL)
• Can be verified by developer
• Comes from authoritative source

Detection patterns: references/detection-patterns.md

• Complete regex patterns for all hallucination types
• Extraction logic for technical suggestions
• Confidence scoring

Tech stack validation: references/tech-stack-validation.md

• Parsing tech-stack.md format
• Version compatibility checking
• Framework-specific validations

Evidence requirements: references/evidence-requirements.md

• What constitutes valid evidence
• Citation formats
• Verification procedures

1. Loaded tech stack: docs/project/tech-stack.md loaded and parsed at workflow start
2. Validated all suggestions: Every tech suggestion checked against tech stack
3. Verified existence: Packages, APIs, entities verified before suggesting
4. Required evidence: Every claim backed by file path, line number, or URL
5. Blocked violations: CRITICAL hallucinations blocked immediately
6. Corrected suggestions: Wrong suggestions replaced with correct alternatives
7. Zero implementation errors: No hallucinated tech makes it to code
8. Prevented refactoring: No wasted time implementing wrong technology
9. Maintained consistency: All code follows documented architecture
10. Measurable impact: Metrics show hallucinations detected and prevented

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