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symfony-agent-mcp

symfony-agent-mcp

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A production-ready Model Context Protocol (MCP) server for Symfony applications. Gives AI assistants deep, read-only introspection into your entire Symfony codebase — routes, controllers, services, entities, database schema, migrations, events, forms, security, Doctrine, Messenger, Twig, API Platform, and much more.

Client

Install

Claude Code

Run claude mcp addsetup

Claude Desktop

Add to claude_desktop_config.jsonsetup

Cursor

Add to .cursor/mcp.jsonsetup

VS Code Copilot

Add to .vscode/mcp.jsonsetup

Any MCP client

stdio transport, command: npx @shakaran/symfony-agent-mcp


Features

1,677 Tools across 16 Categories

Available tool categories (16 categories, 1,677 tools total, ~164,615 tokens if all active)

  Category         │ Tools      │ Est. tokens    │ Description
  ─────────────────┼────────────┼───────────────┼────────────────────────────────────────────────────────
  symfony-core     │  548 tools │ ~ 53939 tokens │ Routes, services, controllers, events, commands, bundles, DI container, kernel
  database         │  176 tools │ ~ 17121 tokens │ Entities, migrations, Doctrine ORM, relationships, query patterns, indexes, DBAL
  security         │  132 tools │ ~ 12950 tokens │ Voters, firewalls, authenticators, JWT, OAuth, CSRF, access control, secrets vault
  frontend         │  121 tools │ ~ 11568 tokens │ Twig, translations, asset mapper, Symfony UX, Turbo, live components, Webpack
  testing          │  110 tools │ ~ 10559 tokens │ PHPUnit, Behat, Cypress, Playwright, Psalm, PHPStan, Rector, static analysis
  integrations     │  106 tools │ ~ 10939 tokens │ Stripe, Slack, Sentry, Elasticsearch, Twilio, SendGrid, Mailgun, Datadog, OpenAI
  serializer       │   91 tools │ ~  9031 tokens │ Serializer, validation, forms, constraints, DTOs, transformers, normalizers
  messaging        │   87 tools │ ~  8455 tokens │ Messenger, notifier, webhooks, Mercure, mailer, transports, stamps, failure handling
  api              │   68 tools │ ~  6438 tokens │ API Platform, OpenAPI, GraphQL, REST patterns, versioning, rate limits, Nelmio
  infrastructure   │   68 tools │ ~  6794 tokens │ Docker, CI/CD, Kubernetes, Terraform, Helm, Nginx, serverless, cloud platforms
  cache-sessions   │   62 tools │ ~  5945 tokens │ Cache pools, HTTP cache, sessions, rate limiter, lock, cache warmers, OPcache
  config           │   35 tools │ ~  3157 tokens │ Environment config, framework settings, Monolog, CORS, locale, feature flags
  code-quality     │   25 tools │ ~  2447 tokens │ Profiler, dead code detection, dependency graph, accessibility, code metrics
  cloud-aws        │   18 tools │ ~  1945 tokens │ AWS S3, SES, Cognito, ECS, Lambda/Bref, Parameter Store, Secrets Manager, CloudFront
  cloud-other      │   16 tools │ ~  1851 tokens │ Azure Blob/Pipelines, Google Cloud Run/Storage, Firebase, DigitalOcean, Consul
  queues           │   14 tools │ ~  1476 tokens │ RabbitMQ, Kafka, SQS FIFO/DLQ, Pusher, Redis pub/sub and streams

To activate a category: call activate_category(category: "<key>")
To search for specific tools: call search_tools(query: "what you want to do")

Security-first design

  • Read-only — never writes, modifies, or executes anything

  • Auto-redaction — passwords, tokens, API keys, and database credentials are replaced with [REDACTED] before any data reaches the AI

  • DLP pipeline — multi-layer Data Loss Prevention scanner (regex patterns + structural detection for credit cards, JWTs, SSH keys, cloud credentials, etc.)

  • Path validation — directory traversal attacks are blocked at the input layer

  • No code execution — PHP files are parsed statically (no eval, no PHP runtime)

  • No network calls — all data comes from local files only

  • Prompt injection filter — tool output is scanned for injection patterns before being forwarded to the AI


Related MCP server: phpustik MCP Server

Quick Start

Option A: npx (no install required)

npx @shakaran/symfony-agent-mcp

Option B: Install globally

npm install -g @shakaran/symfony-agent-mcp
symfony-agent-mcp

Option C: From source

git clone https://github.com/shakaran/symfony-agent-mcp
cd symfony-agent-mcp
pnpm install
pnpm build
pnpm start

See GETTING_STARTED.md for a step-by-step guide including Node.js setup, troubleshooting, and first-use verification.


Integration

One-click Install

Client

Install

Cursor

VS Code

Install in VS Code

VS Code Insiders

Install in VS Code Insiders

Windsurf

Install in Windsurf

Claude Code

Install in Claude Code

Claude Desktop

Install in Claude Desktop

Claude Code

Run once to register the server:

# npx (no local install required)
claude mcp add symfony -- npx @shakaran/symfony-agent-mcp

# Or from a local source build
claude mcp add symfony -- node /path/to/symfony-agent-mcp/dist/server.js

To make it available globally across all projects, add the --scope user flag:

claude mcp add --scope user symfony -- npx @shakaran/symfony-agent-mcp

Claude Desktop

Add to your Claude Desktop configuration file (claude_desktop_config.json):

{
  "mcpServers": {
    "symfony": {
      "command": "npx",
      "args": ["@shakaran/symfony-agent-mcp"]
    }
  }
}

Cursor

Add to .cursor/mcp.json:

{
  "symfony": {
    "command": "npx",
    "args": ["@shakaran/symfony-agent-mcp"]
  }
}

VS Code Copilot

Add to .vscode/mcp.json:

{
  "servers": {
    "symfony": {
      "type": "stdio",
      "command": "npx",
      "args": ["@shakaran/symfony-agent-mcp"]
    }
  }
}

Usage

Every tool accepts an app_path parameter pointing to the root of your Symfony application:

list_routes(app_path: "/var/www/myapp")
→ Found 42 routes: GET /api/users [api_users], POST /login [app_login], …

get_entity_details(app_path: "/var/www/myapp", entity_name: "User")
→ Entity: User  |  Table: users
  Properties: id (int, PK), email (string 180), isActive (bool)
  Relationships: OneToMany → Post (author)

get_error_summary(app_path: "/var/www/myapp")
→ Last 24h: 3 CRITICAL, 12 ERROR, 47 WARNING

get_code_quality_report(app_path: "/var/www/myapp")
→ God classes: UserManager (1240 lines), dead services: 4, N+1 risks: 7

Example prompts you can use with Claude:

  • "Show me all routes with POST methods and their controllers"

  • "Which services are tagged with doctrine.event_listener?"

  • "List the last 50 lines of the production log"

  • "Are there any circular dependencies in the service container?"

  • "What Doctrine entities have relationships with User?"

  • "Show me the migration history and any destructive migrations"

  • "Which controllers have no security attributes?"


Configuration

All configuration is done via environment variables passed to the MCP server process.

Tool Discovery

Variable

Default

Description

SYMFONY_MCP_DYNAMIC_TOOLS

true

Enable dynamic tool discovery. When true, tools/list returns only 5 meta-tools instead of all 1,677. Set to false to restore the legacy behaviour (all tools always visible).

SYMFONY_MCP_TOKEN_BUDGET

40000

Maximum estimated tokens that can be activated per session. Activation is blocked when this limit would be exceeded; pass force=true in activate_category to override.

Security & Access

Variable

Default

Description

SYMFONY_MCP_ALLOWED_PATHS

(any)

Colon-separated list of absolute app paths the server may inspect. Example: /var/www/app1:/var/www/app2

SYMFONY_MCP_REQUIRE_SYMFONY

true

Set to false to skip Symfony project validation (useful for testing).

SYMFONY_MCP_ALLOWED_TOOLS

(all)

Comma-separated allowlist of tool names. Only listed tools are callable.

SYMFONY_MCP_BLOCKED_TOOLS

(none)

Comma-separated denylist. Takes precedence over the allowlist.

SYMFONY_MCP_SIGNING_SECRET

(off)

32+ character secret for request signing. Enables per-request authentication.

SYMFONY_MCP_SESSION_SECRET

(off)

Secret for session token generation.

SYMFONY_MCP_SESSION_TOKEN

(off)

Token to validate on incoming requests.

SYMFONY_MCP_SESSION_STRICT

false

Set to true to reject requests without a valid session token.

SYMFONY_MCP_SESSION_WINDOW

300

Session token validity window in seconds.

Rate Limiting

Variable

Default

Description

SYMFONY_MCP_RATE_LIMIT

60

Max requests per window. Set to 0 to disable.

SYMFONY_MCP_RATE_WINDOW_MS

60000

Rate limit window in milliseconds (1 minute).

SYMFONY_MCP_RATE_BURST

10

Max burst requests in 1 second.

Transport

Variable

Default

Description

SYMFONY_MCP_HTTP_PORT

(off)

Port for HTTP/SSE transport. When set, starts an HTTP server in addition to stdio.

SYMFONY_MCP_STDIO

true

Set to false to disable stdio transport (useful when running HTTP-only).

SYMFONY_MCP_TOOL_TIMEOUT_MS

30000

Per-tool execution timeout in milliseconds.

Example: Claude Code with dynamic tools disabled

{
  "mcpServers": {
    "symfony": {
      "command": "npx",
      "args": ["@shakaran/symfony-agent-mcp"],
      "env": {
        "SYMFONY_MCP_DYNAMIC_TOOLS": "false"
      }
    }
  }
}

Example: token budget increased to 80 000 tokens

{
  "mcpServers": {
    "symfony": {
      "command": "node",
      "args": ["/path/to/symfony-agent-mcp/dist/server.js"],
      "env": {
        "SYMFONY_MCP_TOKEN_BUDGET": "80000"
      }
    }
  }
}

Local Install (from source)

Use this when you want to run the server from a local clone (no npm publish needed).

# 1. Clone the repo
git clone https://github.com/shakaran/symfony-agent-mcp
cd symfony-agent-mcp

# 2. Install dependencies (Node.js ≥ 22 required)
pnpm install         # or: npm install

# 3. Build TypeScript → dist/
pnpm build           # or: npm run build

# 4. Test the server responds
echo '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}' | node dist/server.js

Then configure your MCP client to point at the built file:

Claude Code (run once):

claude mcp add symfony -- node /absolute/path/to/symfony-agent-mcp/dist/server.js

Claude Desktop (claude_desktop_config.json):

{
  "mcpServers": {
    "symfony": {
      "command": "node",
      "args": ["/absolute/path/to/symfony-agent-mcp/dist/server.js"]
    }
  }
}

VS Code (.vscode/mcp.json):

{
  "servers": {
    "symfony": {
      "type": "stdio",
      "command": "node",
      "args": ["/absolute/path/to/symfony-agent-mcp/dist/server.js"]
    }
  }
}

Tip: After rebuilding (pnpm build), restart your MCP client to pick up the changes.


What It Reads

The server reads files directly from your Symfony app — no database connection, no PHP runtime needed:

  • config/routes.yaml, config/routes/*.yaml — YAML routes

  • PHP 8 #[Route] attributes on controllers in src/Controller/

  • config/services.yaml — DI container services

  • config/packages/*.yaml — Framework, security, doctrine, messenger, mailer config

  • src/Entity/*.php — Doctrine entity files (PHP 8 attributes + annotations)

  • var/log/*.log — Application logs

  • migrations/, src/Migrations/ — Doctrine migration files

  • composer.json, composer.lock — Package info

  • .env, .env.local, .env.*.local — Environment variables (sensitive values auto-redacted)


Symfony Compatibility

Symfony

PHP

ORM mapping

5.4 LTS

8.0+

Annotations or Attributes

6.x

8.0+

Attributes

7.x

8.2+

Attributes

8.x

8.2+

Attributes


Requirements

  • Node.js ≥ 22.0.0

  • pnpm ≥ 11.0.0 (or npm/yarn for development)


Development

pnpm install
pnpm dev            # watch mode (TypeScript → dist/)
pnpm test           # run all tests
pnpm lint           # ESLint
pnpm typecheck      # tsc --noEmit

See DEVELOPMENT.md for the full development guide: architecture overview, adding new tools, testing strategy, and contribution guidelines.


Documentation

Document

Description

GETTING_STARTED.md

Step-by-step setup, Node.js prerequisites, troubleshooting

ARCHITECTURE.md

System design, security pipeline, component overview, all 1,677 tools across 16 categories documented

DEVELOPMENT.md

Development workflow, adding tools, testing, contributing

SECURITY.md

Threat model, DLP pipeline, responsible disclosure policy

CHANGELOG.md

Release history and roadmap

PROJECT_SUMMARY.md

High-level project overview and statistics


Contributing

Issues and pull requests are welcome at github.com/shakaran/symfony-agent-mcp.

Please read DEVELOPMENT.md before submitting a PR, and SECURITY.md for the responsible disclosure policy.


License

MIT © Ángel Guzmán Maeso

Install Server
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Maintenance

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0dRelease cycle
4Releases (12mo)
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