SolidX AI Agent

Build full-stack applications on the SolidX platform using natural language.

The SolidX AI Agent is an LLM-powered harness that wraps the SolidX platform tools — module creation, model/field management, layout editing, code generation, and more — so an LLM can orchestrate multi-step application building through a CLI, a persistent server (WebSocket + REST for the Chat UI), or solidctl.

You:     "Create a CRM module with Lead and Contact models,
          add name/email/phone fields, set up list views and menus"

Agent:   1. Checks existing modules           (solid_get_module_metadata)
         2. Creates CRM module                 (solid_create_module)
         3. Creates Lead model with fields     (solid_create_model_with_fields)
         4. Creates Contact model with fields  (solid_create_model_with_fields)
         5. Configures list/form layouts        (solid_update_layout)
         6. Adds sidebar menu entries           (solid_add_or_update_menu)
         → Done. DB + APIs + UI generated.

Key Features

• 10 SolidX platform tools exposed to the LLM alongside a bash shell tool — including filesystem_tool for unified frontend operations and get_metadata for read-only metadata inspection
• Persistent server process — FastAPI with WebSocket + REST endpoints for multi-turn conversations
• Multi-turn sessions — agent maintains conversation context across messages
• Interaction logging — all events persisted to PostgreSQL via agent-owned DB layer
• solidctl integration — solidctl agent start / solidctl agent run <task> commands
• Event-driven architecture — every agent action emits typed events for real-time streaming to CLI or Chat UI
• Rich CLI output — colored panels, step boundaries, tool call previews, cost tracking
• Interactive mode — REPL-style prompt for iterative building
• Built on mini-SWE-agent — lightweight, extensible observe-act loop with LiteLLM (supports Anthropic, OpenAI, and 100+ providers); uses FastLLM for auxiliary tasks (intent classification, session titles)

Prerequisites

• Python 3.11+ (recommended)
• An LLM API key — Anthropic (recommended) or OpenAI
• PostgreSQL with the SolidX database (DATABASE_URL)
• For server interaction logging (optional): DATABASE_URL so the agent can create its logging tables in PostgreSQL

Quick Start

1. Install

From PyPI:

# Stable release
pip install solidx-ai-agent

# Latest beta (cut from the `dev` branch)
pip install --pre solidx-ai-agent

# Pin a specific beta
pip install solidx-ai-agent==0.2.0b1

For local development against this repo:

cd /path/to/SolidXCode/solidx-ai-agent
pip install -e "./vendor/mini-swe-agent" -e ".[dev]"

# After taking pull 
pip install -e ".[full]"
~/Code/python/agent/.venv/bin/python -m pip install -e ".[full]"
~/.solidx/venv/bin/python -m pip install -e ".[full]"

Release process is documented in docs/RELEASE.md.

2. Configure environment

cp .env.example .env

Edit .env with your settings:

# Required: LLM API key (pick one)
ANTHROPIC_API_KEY=sk-ant-...
# OPENAI_API_KEY=sk-...

# Required for native mode: database connection
DATABASE_URL=postgresql://user:password@localhost:5432/solidx_db

# Optional: which LLM model to use (default: anthropic/claude-sonnet-4-20250514)
# MSWEA_MODEL_NAME=anthropic/claude-sonnet-4-20250514

# Optional: RAG support uses LlamaIndex

3. Run the agent

Start the agent server (for Chat UI):

solidx-agent serve --port 8765

Single task (CLI):

solidx-agent "Create a Library Management module with Book and Author models"

Interactive mode:

solidx-agent -i

SolidX AI Agent — Interactive Mode

Type your task and press Enter. Type quit or exit to stop.

solidx> List all existing modules
solidx> Create a Book model with title, author, isbn, and published_date fields
solidx> Add a Publisher model to the Library module
solidx> quit

As a Python module:

python -m solidx_agent "Show me the field metadata for the Book model"

4. Verify the installation (no external services needed)

MSWEA_SILENT_STARTUP=1 python -m pytest tests/ -v

All 166+ tests across 24 test files pass using mock adapters — no database or LLM API required.

CLI Reference

Usage: solidx-agent [OPTIONS] [TASK] COMMAND [ARGS]...

Commands:
  serve         Start the agent server (FastAPI + WebSocket + REST + /mcp mount)
  mcp           Run as a local MCP server over stdio (for Claude Desktop)
  mcp-remote    Run as a remote MCP server over Streamable HTTP

Arguments:
  [TASK]    Task description for the agent

Options:
  -c, --config TEXT       Path to custom YAML config file
  -m, --mode TEXT         Tool mode (default: native)
  -l, --log-level TEXT    Logging level (default: INFO)
  -i, --interactive       Interactive prompt mode
  --help                  Show this message and exit.

serve subcommand:

Usage: solidx-agent serve [OPTIONS]

Options:
  -p, --port INTEGER      Port to bind the server (default: 8765)
  -H, --host TEXT         Host to bind the server (default: 0.0.0.0)
  -l, --log-level TEXT    Logging level (default: INFO)

mcp subcommand (local STDIO MCP):

Usage: solidx-agent mcp [OPTIONS]

Options:
  -l, --log-level TEXT       Logging level (default: INFO)
  --file-logs/--no-file-logs Write logs to Claude Desktop logs directory

Requires SOLIDX_API_KEY (a solid-core user API key, format sldx_…) in the environment. The user's role must include the mcp:invoke permission.

mcp-remote subcommand (remote Streamable-HTTP MCP):

Usage: solidx-agent mcp-remote [OPTIONS]

Options:
  --host TEXT             Bind address (default: 0.0.0.0)
  -p, --port INTEGER      Listen port (default: 9000)
  --mount-path TEXT       Path to mount the MCP app at (default: /mcp)
  -l, --log-level TEXT    Logging level (default: INFO)

Requires DATABASE_URL (the same Postgres as solid-core). Clients authenticate by sending the solidx-api-key: sldx_… header on every request. GET /health is exempt from auth for liveness probes.

Examples:

# One-shot task
solidx-agent "Add an email field to the Contact model in the CRM module"

# Persistent server (Chat UI)
solidx-agent serve --port 8765

# Use a different LLM model
MSWEA_MODEL_NAME=openai/gpt-4o solidx-agent "Create a Task model"

# Custom config file
solidx-agent --config my_config.yaml "Build a dashboard"

# Debug logging
solidx-agent -l DEBUG "Inspect the Library module"

Running the MCP server (authenticated)

The MCP layer is exposed three ways:

Both dedicated MCP commands authenticate against solid-core user API keys (the keys minted via POST /iam/api-keys). Validation is performed against the shared Postgres directly — no HTTP call to solid-core per request, with a short in-process cache. The user's role must include the mcp:invoke permission (configurable under mcp.remote.required_permission).

Local Claude Desktop (mcp STDIO)

1. Mint an API key for your user in solid-core (admin UI or POST /iam/api-keys).
2. Configure Claude Desktop's claude_desktop_config.json:

{
  "mcpServers": {
    "solidx": {
      "command": "solidx-agent",
      "args": ["mcp"],
      "env": {
        "SOLIDX_API_KEY": "sldx_...",
        "DATABASE_URL": "postgresql://user:pw@host:5432/db"
      }
    }
  }
}

3. Restart Claude Desktop. If the key is invalid or the user lacks the mcp:invoke permission, the server fails to start and the error is surfaced in Claude Desktop's "developer tools" log.

The STDIO server re-validates the key periodically (default every 5 minutes, see mcp.remote.stdio_revalidate_seconds) and exits if the key is revoked or loses its permission, so revocations propagate without restarting Claude.

Remote (mcp-remote Streamable HTTP)

export DATABASE_URL=postgresql://user:pw@host:5432/db   # same DB as solid-core
solidx-agent mcp-remote --host 0.0.0.0 --port 9000

Test from the command line:

# Liveness — no auth required
curl http://localhost:9000/health

# Without the header → 401
curl -X POST http://localhost:9000/mcp/ \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

# With a valid, permitted key → 200
curl -X POST http://localhost:9000/mcp/ \
  -H 'content-type: application/json' \
  -H 'solidx-api-key: sldx_...' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Configure your remote MCP client (Cursor, Codex CLI, etc.) to use http://<host>:9000/mcp/ with header solidx-api-key: sldx_….

Audit log (ss_mcp_audit_log)

Every dedicated-MCP request is persisted to ss_mcp_audit_log — auth events (auth.startup, auth.denied, auth.revalidate), non-tool JSON-RPC method calls (tools/list, initialize, etc.), and tool invocations (tools/call) with their inputs and outputs.

Useful queries:

-- Recent activity per user
SELECT username, method, tool_name, status, duration_ms, created_at
FROM ss_mcp_audit_log
ORDER BY created_at DESC
LIMIT 50;

-- Failed auth attempts in the last hour
SELECT created_at, transport, client_addr, error_message
FROM ss_mcp_audit_log
WHERE method = 'auth.denied' AND created_at > NOW() - INTERVAL '1 hour';

-- Most-used tools per user this week
SELECT username, tool_name, COUNT(*) AS calls,
       AVG(duration_ms) AS avg_ms
FROM ss_mcp_audit_log
WHERE method = 'tools/call' AND created_at > NOW() - INTERVAL '7 days'
GROUP BY username, tool_name
ORDER BY calls DESC;

Large request/response payloads are JSON-encoded and truncated to mcp.audit.max_payload_chars (default 100 KB). Set mcp.audit.log_response_results: false to skip response bodies (only inputs are logged). Set mcp.audit.enabled: false to disable audit logging entirely.

Limitation: STDIO mode logs auth events and every tool call, but not non-tool JSON-RPC methods (e.g. tools/list, initialize). Those are only visible in the audit log when going through mcp-remote.

solidctl Commands

When using the SolidX CLI (solidctl), you can start the agent server or run a single task without invoking solidx-agent directly:

solidctl agent start --port 8765    # start agent server
solidctl agent run "Create a CRM"   # single-shot task

Tool Execution

The agent imports tool functions directly and calls them as async Python functions (native mode). Only native mode is supported.

Agent process → Python import → manage_data_model() → PostgreSQL

Requirements:

• DATABASE_URL pointing to the SolidX PostgreSQL database
• (Optional) LlamaIndex RAG index for documentation-aware tools

Best for: Local development, single-user workflows, fastest execution.

Available Tools

The agent exposes 10 tools (9 SolidX + bash):

Note: get_backend_context, edit_backend_code, edit_frontend_code, and get_frontend_context were removed from the codebase — they were replaced by filesystem_tool.

Configuration

Config file (config/solidx.yaml)

The default config is bundled with the package. Override it with --config:

agent:
  step_limit: 30              # max LLM query cycles
  cost_limit: 5.0             # max USD spend per run
  mode: confirm               # confirm / yolo / human

tools:
  mode: native                # only native mode is supported

environment:
  timeout: 120                # shell command timeout (seconds)
  cwd: ""                     # working directory (default: current)

server:
  port: 8765
  host: "0.0.0.0"
  session_timeout: 1800
  max_sessions: 10

model:
  model_name: anthropic/claude-sonnet-4-20250514
  cost_tracking: ignore_errors

Environment variable overrides

Any config value can be overridden via environment variables:

Project Structure

solidx-ai-agent/
├── vendor/mini-swe-agent/               # Agent framework (editable install, not modified)
├── pyproject.toml                       # Package config and dependencies
├── .env.example                         # Environment variable template
├── README.md                            # This file
├── ARCHITECTURE.md                      # Detailed technical architecture reference
├── run.py                               # CLI entry point (Typer)
├── console.py                           # Rich terminal event listeners
├── exceptions.py                        # Agent exceptions (e.g. TurnComplete)
├── agent-ui/                            # Bundled React/Vite Chat UI
├── agents/
│   └── solidx_agent.py                  # Agent with lifecycle events
├── config/
│   ├── loader.py                        # YAML + env var config loading
│   └── solidx.yaml                      # Default configuration
├── db/
│   ├── base.py                          # SQLAlchemy declarative base
│   ├── session.py                       # Engine / session factory for agent DB
│   ├── repository.py                    # Persistence helpers
│   └── models/                          # ORM models (sessions, events)
├── environments/
│   └── solidx_environment.py            # Hybrid bash + SolidX tool executor
├── events/
│   ├── emitter.py                       # Async EventEmitter
│   └── events.py                        # Typed event dataclasses
├── models/
│   ├── solidx_model.py                  # Multi-tool LLM model
│   └── fast_llm.py                      # FastLLM for auxiliary tasks (intent classification, session titles)
├── prompts/
│   ├── system_prompt.md                 # SolidX builder system prompt
│   └── instance_prompt.md               # Per-task prompt template
├── server/
│   ├── app.py                           # FastAPI app: WebSocket + REST
│   ├── sessions.py                      # Multi-turn session manager
│   └── db_listener.py                   # Persists events to PostgreSQL
├── skills/                              # Skill library
│   ├── backend-studio/                  # 40 backend skills
│   ├── frontend-studio/                 # 4 frontend skills
│   ├── deployment-studio/               # 1 deployment skill
│   ├── platform/                        # 2 platform-level skills
│   ├── tools/                           # (reserved)
│   └── workflows/                       # (reserved)
├── solidx_platform/
│   ├── tools/                           # Tool implementations (includes deprecated edit_frontend_code, get_frontend_context)
│   └── helpers/                         # Helpers: backend_step_engine.py, code_context_selector.py, json_patch_helper.py, …
├── tools/
│   ├── adapter.py                       # Native tool adapter
│   ├── registry.py                      # OpenAI function schema builder
│   └── composite.py                     # Multi-step orchestration helpers
└── tests/                               # 166+ tests across 24 test files (all pass without external services)

Dependency graph:

solidx-ai-agent
  ├── sqlalchemy>=2.0, psycopg2-binary, fastapi, uvicorn, websockets, …
  └── mini-swe-agent        (pip install -e ./vendor/mini-swe-agent)
        └── litellm, pydantic, jinja2, …

How It Works

CLI and interactive mode

1. User provides a task via CLI argument or interactive prompt
2. Config loads from solidx.yaml, merged with environment variable overrides
3. Tool adapter initializes — discovers tool functions from the installed platform tools (native mode)
4. Tool registry builds OpenAI function-calling schemas from all discovered tools
5. Agent loop starts — LLM receives the system prompt (SolidX platform context + tool descriptions) and the user's task; FastLLM classifies user intent (e.g. backend vs frontend task) to select the right skill/workflow
6. LLM reasons and calls tools — can call bash for shell commands or any of the 10 SolidX tools
7. Environment dispatches — routes bash to subprocess, SolidX tools to the adapter
8. Events stream — every action emits typed events to the console (or WebSocket clients in server mode)
9. Loop repeats until the LLM signals completion or limits are reached
10. Results displayed with total steps and cost

Server mode (Chat UI)

1. Process starts with solidx-agent serve (or solidctl agent start); FastAPI binds to host/port from config or flags
2. Lifespan hook loads config, initializes the tool adapter and registry, optionally creates SQLAlchemy engine/session factory for the agent database (same DATABASE_URL as native tools when logging is enabled)
3. SessionManager tracks WebSocket-backed sessions with idle timeout and max concurrent sessions
4. Client connects to /ws/agent, sends start_session → server returns session_id and streams lifecycle events for that connection
5. Each user message runs one turn — conversation history is kept in the session so the LLM sees prior turns (UserMessage / TurnCompleteEvent participate in the event stream and optional DB logging)
6. DatabaseEventListener (when DB is configured) writes interaction events to PostgreSQL for auditing and analytics
7. REST — POST /api/agent/run runs a single task in a temporary session; GET/DELETE /api/agent/sessions manage server-side sessions

Streaming & Events

The agent emits typed events at every lifecycle point. This powers the CLI and the Chat UI over WebSocket.

Events emitted during a run (representative flow):

AgentStarted → UserMessage → StepStarted → LlmComplete → ToolCalling → ToolResult → StepComplete → … → TurnCompleteEvent → AgentComplete

(UserMessage records inbound user text in multi-turn flows; TurnCompleteEvent marks the end of one assistant turn.)

CLI output example:

╭──────────── SolidX Agent Started ─────────────╮
│ Create a Library module with Book model        │
╰────────────────────────────────────────────────╯
──────────── Step 1  (cost so far: $0.0000) ─────────────
Assistant (step 1, $0.0023):
Let me check what modules already exist first.
  > solid_get_module_metadata: {"module_matches": "Library"}

Calling tool: solid_get_module_metadata
Result: OK 234ms

──────────── Step 2  (cost so far: $0.0023) ─────────────
...
──────────────────────────────────────────────────────────
╭──────────── Agent Complete ────────────────────╮
│ Status: Submitted                              │
│ Steps: 4  |  Cost: $0.0089                     │
╰────────────────────────────────────────────────╯

Chat UI — WebSocket (/ws/agent): clients and server exchange JSON messages. Client → server (multi-turn protocol):

{"action": "start_session"}
{"action": "message", "session_id": "<uuid>", "content": "Create a CRM module"}
{"action": "end_session", "session_id": "<uuid>"}

Server → client: after start_session, the server sends session_started, then streams typed events (same shape as below) for each turn, and ends the turn with turn_complete.

{"type": "session_started", "session_id": "<uuid>"}
{"type": "UserMessage", "data": {"content": "Create a CRM module", "session_id": "<uuid>", "turn_number": 1}}
{"type": "StepStarted", "data": {"step": 1, "cost_so_far": 0.0}}
{"type": "ToolCalling", "data": {"tool_name": "solid_create_module", "arguments": {"prompt": "..."}}}
{"type": "ToolResult", "data": {"tool_name": "solid_create_module", "output": "...", "returncode": 0}}
{"type": "TurnCompleteEvent", "data": {"content": "...", "turn_number": 1, "total_cost": 0.01, "total_steps": 3}}
{"type": "turn_complete", "data": {"content": "...", "session_id": "<uuid>", "turn_count": 1}}
{"type": "session_ended", "session_id": "<uuid>"}

See docs/CHAT_UI_DEVELOPER_GUIDE.md for full protocol details, REST endpoints, and integration notes.

Example Tasks to Try

Once set up with a database and API key:

# Inspect existing state
solidx-agent "List all existing modules and their models"

# Explore metadata
solidx-agent "What modules exist in this project? Show me all models and their field counts."

# Create from scratch
solidx-agent "Create a Blog module with Post and Comment models. Posts should have title, content, published_date, and status fields. Comments should have body, author_name, and a relation to Post."

# Modify existing structures
solidx-agent "Add an email and phone_number field to the Author model in the Library module"

# Layout changes
solidx-agent "Update the list view for Books to show title, author, isbn, and published_date columns"

# Code changes
solidx-agent "Add a custom endpoint to the Book controller that returns books published in the last 30 days"

# Multi-step workflows
solidx-agent "Create a complete Task Management module with Project, Task, and Comment models. Projects have name and description. Tasks have title, description, status (todo/in-progress/done), priority, and due_date. Comments belong to Tasks. Set up menus for all models."

Troubleshooting

"DATABASE_URL environment variable is not set" Set DATABASE_URL in .env pointing to your SolidX PostgreSQL database.

"No default model set" Set MSWEA_MODEL_NAME in .env (e.g., anthropic/claude-sonnet-4-20250514) or ANTHROPIC_API_KEY / OPENAI_API_KEY.

Tests fail on import Run pip install -e "./vendor/mini-swe-agent" -e ".[dev]" to ensure both packages are installed as editable.

Further Reading

• ARCHITECTURE.md — Detailed technical architecture, component deep dives, data flow diagrams, and extension points
• docs/CHAT_UI_DEVELOPER_GUIDE.md — Chat UI integration: WebSocket protocol, REST API, and session flow
• mini-swe-agent docs — Framework documentation for the underlying agent loop
• LiteLLM docs — Supported LLM providers and model names