What is ai-demo AGENTS.md?

Project instructions for a Symfony 8 demo application that showcases AI features such as retrieval from a blog, streaming chat, multiple cooperating agents, voice, images, video captions, and a demo MCP server. They also document setup, development commands, testing, and the required PostgreSQL vector store.

Use them when developing or running this Symfony AI demo. They cover Docker and Composer setup, environment variables, blog indexing and retrieval, starting the local server, PHPUnit tests, browser tests, and static analysis.

They prevent common setup mistakes, especially trying to index the blog before creating and preparing the vector store. They also provide the commands and checks needed to run and test the application.

How symfony/ai-demo configures Codex and OpenCode

About the project

Symfony AI Demo is a Symfony application that demonstrates AI components through a chatbot using OpenAI language and embedding models, with PostgreSQL and pgvector storing contextual embeddings. Developers use it to explore a Symfony-based AI application and its setup.

symfony/ai-demo · 48 stars · on GitHub · symfony.com

Reuse

Borrowing it

Nothing to install: this file belongs to symfony/ai-demo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/symfony/ai-demo/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/symfony/ai-demo

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/symfony/ai-demo/agents-md/github.svg)](https://agentmods.dev/instructions/symfony/ai-demo/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/symfony/ai-demo/agents-md"><img src="https://agentmods.dev/badge/instructions/symfony/ai-demo/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/symfony/ai-demo/agents-md"><img src="https://agentmods.dev/badge/instructions/symfony/ai-demo/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,039 This file is loaded in full into every session.

When invoked 2,039 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.02039	$0.02039
Opus 5.5	$0.00816	$0.00816
Sonnet 5.5	$0.00408	$0.00408
Haiku 4.5	$0.00204	$0.00204

Measured 1mo ago against content hash fe738ac9f5a3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ai-demo AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

AI agent guidance for the Symfony AI demo application.

Project Overview

Symfony 8.0 demo application showcasing the Symfony AI components: RAG over the Symfony blog, streaming chat, multi-agent orchestration, voice/speech, image cropping, webcam video captioning, YouTube transcript Q&A, Wikipedia-grounded answers, a chat drawing its tools from remote MCP servers, a demo MCP server, and the AI Mate development CLI.

Development Commands

Setup

docker compose up -d                          # Start PostgreSQL (pgvector)
composer install
echo "OPENAI_API_KEY='sk-...'" > .env.local   # HUGGINGFACE_API_KEY only if you wire HF agents

# Vector store must be set up before indexing
symfony console ai:store:setup ai.store.postgres.symfony_blog
symfony console ai:store:index blog -vv
symfony console ai:store:retrieve blog "Week of Symfony"

symfony serve -d                              # https://localhost:8000/

Testing and Quality

vendor/bin/phpunit                            # All tests (config in phpunit.xml)
vendor/bin/phpunit tests/SmokeTest.php        # Single test file
vendor/bin/phpunit --testsuite e2e            # Panther browser tests, local only (see README.md)
vendor/bin/phpstan analyse                    # Static analysis (phpstan.dist.neon)
# There is no enforced formatter in this package — php-cs-fixer is configured at the monorepo root.

The e2e suite drives all eleven use cases in a real browser and asserts the Symfony AI panel of the profiler (platform calls, tools, tool calls, token usage). It runs the app in the dev environment, calls the AI platforms for real, and is excluded from the default suite — never add it to CI.

MCP

src/Mcp/ holds both sides of MCP, and config/packages/mcp.yaml configures both.

Demo MCP server (mcp.servers.demo): symfony console mcp:server exposes tools/prompts/resources/resource-templates from src/Mcp/Tools/, src/Mcp/Prompts/ and src/Mcp/Resources/. Start it manually when demoing. Test with {"method":"tools/list","jsonrpc":"2.0","id":1}.
MCP client (mcp.clients.remotes): three public, key-less servers - livescore (football), transit (NYC subway) and weather. The mcp agent lists them as mcp_server tools, so it has no local tools at all. symfony console debug:mcp --client=remotes --server=<name> connects and prints what one advertises.
livescore only speaks the legacy HTTP+SSE transport, which the SDK's HttpTransport does not implement, so it is configured as a stdio child process running npx -y mcp-remote. Needs Node.js.

Read the full file on GitHub · 100 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago Changed · +3 lines · +229 tokens per session fe738ac9f5a3
1mo ago First seen · 97 lines · 1,810 tokens per session scan A 85901bf86e5d

Subscribe to this mod's changes

ai-demo AGENTS.md is an instructions file published in the GitHub repository symfony/ai-demo (48 stars, last pushed 2d ago), licensed MIT. It adds 2,039 tokens to every session, about $0.0082 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Data and AI LLM RAG and vectors ai symfony symfony-ai

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 9,715 tokens

ai-demo: Instructions file for Codex

Borrowing it

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

How it starts

AGENTS.md

Project Overview

Development Commands

Setup

Testing and Quality

MCP

What this file has done since we first saw it

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