OpenSpec Change: enterprise-gaming-api-plugin-anticheat

Change ID: enterprise-gaming-api-plugin-anticheat
Package: @suaveplan/api-plugin-anticheat
Category: gaming/server
Target path: gaming/server/api-plugin-anticheat
Status: PROPOSED
Date: 2026-04-24
Reference spec: /mnt/s/web/suaveplan/enterprise/api-plugin-anticheat.md

Summary

Deliver @suaveplan/api-plugin-anticheat on the genesis branch from scratch at enterprise quality. The package provides server-side anti-cheat validation with speed, damage, action-rate, and teleport checks. A ViolationTracker records per-player violations with severity 1–10, decays accumulated violations over time, and computes a running trust score (starting at 100). When the trust score drops below the ban threshold, the tracker fires anticheat:ban event. HTTP routes expose reporting and admin endpoints. Genesis adds Zod violation schemas, structured errors, OTel violation counter, injectable clock, and 100% coverage.

Current-state audit (genesis)

Package does not exist on genesis yet — fresh build.

Available workspace deps on genesis

Package	Role
`@suaveplan/error` (`workspace:^`)	`AntiCheatError`; `AC.*` codes
`@suaveplan/types` (`workspace:^`)	`Clock`
`@suaveplan/events` (`workspace:^`)	`anticheat:violation`, `anticheat:ban`, `anticheat:flag` events
`zod` (`catalog:forms`)	`Violation`, `CheckConfig` schemas
`@opentelemetry/api` (`catalog:observability`)	Violation counter, ban counter

Public API surface

type ViolationType = 'speed' | 'damage' | 'action_rate' | 'teleport' | 'custom'

interface Violation {
  playerId: string
  type: ViolationType
  severity: number    // 1–10
  data?: unknown
  timestamp: number
}

interface CheckConfig {
  maxSpeed?: number             // m/s
  maxDamagePerSecond?: number
  maxActionsPerSecond?: number
  maxTeleportDistance?: number  // meters
  banThreshold?: number         // trust score, default 30
  decayRatePerSecond?: number   // violation decay, default 0.1
}

function createViolationTracker(config: CheckConfig, options?: { clock?: Clock }): ViolationTracker

interface ViolationTracker {
  check(playerId: string, type: ViolationType, value: number): void
  addViolation(violation: Violation): void
  getTrustScore(playerId: string): number
  getViolations(playerId: string): Violation[]
  isBanned(playerId: string): boolean
  tick(dt: number): void   // decay violations
  reset(playerId: string): void
}

HTTP Routes

Method	Path	Description
`POST`	`/check`	Submit player action for validation
`GET`	`/players/:id/score`	Get trust score
`GET`	`/players/:id/violations`	List violations
`DELETE`	`/players/:id/violations`	Reset violations (admin)
`POST`	`/ban/:id`	Manual ban

File layout

gaming/server/api-plugin-anticheat/
  package.json
  tsconfig.json
  vitest.config.ts
  src/
    index.ts
    error-codes.ts
    types/common.ts
    types/common.md
    core/
      violation-tracker/
        violation-tracker.ts
        violation-tracker.md
        violation-tracker.types.ts
        violation-tracker.test.ts
        index.ts
    routes/
      anticheat.ts
      anticheat.md
    plugin.ts
    plugin.md
  tests/
    integration.test.ts

Impact

Downstream: @suaveplan/api-plugin-game-server hooks ban events to session kick. Prerequisites: @suaveplan/error, @suaveplan/types, @suaveplan/events.

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