Make AI Code 100% Observable

// Define your event catalog BEFORE AI generates code // This is the contract. AI must follow it. domain auth { entity user { event login:1 { user_id: uuid ip: ip_addr method: string // "password", "oauth", "sso" mfa_used: bool } event logout:1 { user_id: uuid reason?: string // optional field } event locked:1 { user_id: uuid attempts: int duration_mins: int } } } domain agent { entity code { event generated:1 { file_path: string lines: int model: string confidence: float } } entity test { event passed:1 { test_name: string } event failed:1 { test_name: string, reason: string } } }

//! AI-generated authentication service //! Every action emits observable events use event_model::{emit, EventCollector, EventId}; pub struct AuthService { collector: EventCollector, max_attempts: u32, } impl AuthService { pub async fn login( &self, user_id: Uuid, password: &str, ip: IpAddr, ) -> Result<Session, AuthError> { // Verify credentials... let user = self.verify_credentials(user_id, password).await?; // OBSERVABLE: Every successful login is an event emit!(auth.user.login:1, { "user_id": user_id, "ip": ip.to_string(), "method": "password", "mfa_used": user.mfa_enabled }); Ok(self.create_session(user).await?) } pub async fn handle_failed_login( &self, user_id: Uuid, attempts: u32, ) -> Result<(), AuthError> { if attempts >= self.max_attempts { // OBSERVABLE: Account lockout is an event emit!(auth.user.locked:1, { "user_id": user_id, "attempts": attempts, "duration_mins": 30 }); self.lock_account(user_id, Duration::from_mins(30)).await?; } Ok(()) } }

// Query events with pattern matching // All auth events in the last hour let auth_events = collector.query("auth.%").await; // All failures across the entire system let failures = collector.query("%.failed:%").await; // All AI-generated code events let ai_code = collector.query("agent.code.%").await; // Count events by domain let counts = collector.count_by_domain().await; // → {"auth": 847, "agent": 234, "payments": 156} // Find specific patterns let locked_accounts = collector.query("auth.user.locked:%").await; for event in locked_accounts { let user_id = event.payload["user_id"].as_str(); let attempts = event.payload["attempts"].as_i64(); println!("User {} locked after {} attempts", user_id, attempts); }

// AI generates code and observes its own output pub async fn ai_generate_with_feedback( prompt: &str, collector: &EventCollector, ) -> Result<GeneratedCode, Error> { // AI generates code let code = ai_model.generate(prompt).await?; // OBSERVABLE: Track what AI generated emit!(agent.code.generated:1, { "file_path": code.path, "lines": code.lines, "model": "claude-3.5-sonnet", "confidence": code.confidence }); // Run tests on generated code let test_result = run_tests(&code).await; match test_result { Ok(_) => { emit!(agent.test.passed:1, { "test_name": "generated_code_tests" }); } Err(e) => { // OBSERVABLE: AI can see its own failures emit!(agent.test.failed:1, { "test_name": "generated_code_tests", "reason": e.to_string() }); // AI queries its own failure history let my_failures = collector.query("agent.test.failed:%").await; let failure_rate = calculate_failure_rate(&my_failures); // AI can reason: "My code fails 23% of the time on auth modules" if failure_rate > 0.2 { // Adjust generation strategy... } } } Ok(code) }

//! Syntax.ai - Universal Event Model for Rust //! Make AI-Generated Code Observable. Verifiable. Improvable. use std::str::FromStr; use serde::{Serialize, Deserialize}; use regex::Regex; use once_cell::sync::Lazy; static EVENTID_REGEX: Lazy<Regex> = Lazy::new(|| { Regex::new(r"^[a-z][a-z0-9_]*\.[a-z][a-z0-9_]*\.[a-z][a-z0-9_]*:[1-9][0-9]*$") .expect("Invalid regex") }); /// The Universal Event Model identifier /// Format: domain.entity.action:version #[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)] pub struct EventId { pub domain: String, pub entity: String, pub action: String, pub version: u32, } impl FromStr for EventId { type Err = EventIdError; fn from_str(s: &str) -> Result<Self, Self::Err> { if !EVENTID_REGEX.is_match(s) { return Err(EventIdError::InvalidFormat(s.to_string())); } let (path, version_str) = s.split_once(':') .ok_or_else(|| EventIdError::InvalidFormat(s.to_string()))?; let parts: Vec<&str> = path.split('.').collect(); Ok(EventId { domain: parts[0].to_string(), entity: parts[1].to_string(), action: parts[2].to_string(), version: version_str.parse()?, }) } } /// Create an event with compile-time event ID construction #[macro_export] macro_rules! emit { ($domain:ident.$entity:ident.$action:ident:$version:literal, { $($json:tt)* }) => {{ let event_id = EventId { domain: stringify!($domain).to_string(), entity: stringify!($entity).to_string(), action: stringify!($action).to_string(), version: $version, }; Event::new(event_id, serde_json::json!({ $($json)* })) }}; } // Usage: // let event = emit!(auth.user.login:1, { // "user_id": user.id, // "ip": req.ip.to_string(), // "method": "password" // });