A server that provides AI NPCs with persistent memory for game studios, supporting NPC CRUD, dialogue, and voice via Stdio or remote SSE. This MCP server centers on model context delivery and persistent agent memories within a lightweight, developer-friendly interface.

🛠️ Key Features

AI NPCs with persistent memory
NPC CRUD operations
Dialogue management and voice (tts)
Stdio or remote SSE communication
Grounded in the MCP (Model Context Protocol) framework
Tags: ai, ai-agent, ainpcengine, coding-agent, dialogu e, gamedev, godot, mcp, mcp-server, npc, tts, unity, unreal, voice

🚀 Use Cases

Integrate persistent NPCs into game studios
Manage NPC lifecycles and dialogues across engines (Godot, Unity, Unreal)
Extend NPC capabilities with voice and memory for dynamic interactions
Use MCP-style server for standardized model context delivery

⚡ Developer Benefits

Clear MCP server implementation details for integration
Standardized model context provisioning and NPC memory handling
Lightweight Stdio or remote SSE transport options
Descriptive readme excerpt and topics to aid discovery

⚠️ Limitations

Data fields limited to slug, name, description, topics, toolCount, readmeExcerpt as provided
Behavior based strictly on the given data; no invented capabilities beyond description

ainpc — AINPCEngine CLI & MCP Server

Create, talk to, and manage AI-powered NPCs from the command line. Built for coding agents.
NPCs that remember players across sessions, react to game events, and stay in character — powered by AINPCEngine.

Website · Docs · Live Demo · Pricing

Meet the NPCs

Every one of these is a live AI NPC on the public demo — persistent memory, daily schedules, moods, and secrets. Click through and talk to them.

Grok the Blacksmith merchant · Village Guard _{"Aye, what d'ye need? I've blades sharp enough to split a hair."}	Elara Nightbloom herbalist · Healers Circle _{"Every leaf tells a story, if you know how to listen."}	Captain Voss guard · Town Watch _{"State your business or move along. I haven't got all day."}	Pip Tanglefoot innkeeper · Merchants Guild _{"Welcome, welcome! Ale's cold, stew's hot, and the beds only have a few bugs!"}
Sister Maren priest · Temple of the Dawnlight _{"The light does not judge, child. It only reveals what is already there."}	Dax Ironjaw merchant _{"A fair deal? Friend, every deal I make is fair — for me."}	Old Thorn farmer _{"Rain's coming. Or trouble. Same thing, usually."}	Lyra Ashford scholar · Academy of Letters _{"If the answer isn't in this book, I simply haven't found the right page yet."}

See It In Action

Real terminal sessions, real dashboard — no mockups. Click any card to watch.

CLI & Coding Agents
_{Signup to a remembering NPC — one terminal, 75 seconds}

Dashboard
_{Mission control: live NPC, game and interaction KPIs}

Games
_{Each game gets its own world — create one in seconds}

NPCs
_{Create an NPC: role, traits, speech style, backstory}

Playground
_{Chat live with your NPC — watch it remember the debt}

Why AINPCEngine

Persistent memory — NPCs remember every player across sessions: names, debts, favors, grudges
Dynamic personalities — traits, moods, daily schedules, secrets; NPCs stay in character
Full game-event coverage — dialogue, combat, trade, and quest events through one API
AI persona generation — generate a complete NPC (backstory, traits, speech style) from a role
NPC voice (TTS) — give any NPC a voice via the speak endpoint
REST + WebSocket — request/response or realtime streaming, your choice
Agent-native — 49 MCP tools; coding agents can create and manage NPCs end-to-end
SDKs for every engine — Unity, Unreal, Godot, Rust, Node.js, plus a CLI

Pricing

Plans from $29/mo with a 7-day free trial ($0 today). See pricing →

Install

bash

npm install -g ainpc-cli

Get Your API Key

bash

ainpc signup "My Studio" --email you@studio.com --password ********

Creates your studio and auto-saves an npk_ API key. Then log in at https://ainpcengine.com and add a card to start the 7-day free trial ($0 today, plans from $29/mo). Or sign up at https://ainpcengine.com/auth/register and generate a key in Studio Dashboard → API Keys.

Quick Start

bash

# Login (one time)
ainpc login --key YOUR_API_KEY --game my-rpg

# Create an NPC
ainpc create "Grok the Blacksmith" --role merchant --traits gruff,loyal

# Talk to them
ainpc say NPC_ID "Got any swords?"

# AI-generate a full NPC (NPC Persona)
ainpc generate --role guard --name "Captain Voss"

# List all NPCs
ainpc list

# Check status
ainpc status

Per-Project Config

bash

ainpc login --local --key YOUR_KEY --game my-rpg   # saves to .ainpc/config.json
ainpc login --key YOUR_KEY --game my-rpg           # saves to ~/.ainpc/config.json
ainpc config                                       # show active config

Local config overrides global. Add .ainpc/ to your .gitignore.

Agent Integration

Add to your CLAUDE.md, .cursorrules, .clinerules, or .windsurfrules:

code

Use the ainpc CLI for NPC management.
Config auto-loaded from .ainpc/config.json or AINPC_API_KEY env.
Run ainpc --help for full reference.

MCP Server

49 tools for AI agents: NPC CRUD, dialogue, game events, persona generation, studio account, usage and billing.

Local (stdio):

json

{ "mcpServers": { "ainpcengine": { "type": "stdio", "command": "ainpc", "args": ["mcp-serve"] } } }

Requires npm install -g ainpc-cli + ainpc login --key npk_YOUR_KEY --game my-rpg (or AINPC_API_KEY env).

Remote (SSE, zero install) — for Claude Web and other web-based agents:

json

{ "mcpServers": { "ainpcengine": { "type": "sse", "url": "https://mcp.ainpcengine.com/sse",
  "headers": { "Authorization": "Bearer npk_YOUR_API_KEY" } } } }

No key yet? Connect keyless — the remote server starts in onboarding mode and an agent can self-signup via the ainpc_signup tool.

Commands

code

ainpc create "Name" --role R          Create NPC
ainpc list                            List all NPCs
ainpc show NPC_ID                     Show detail
ainpc say NPC_ID "message"            Talk to NPC
ainpc generate --role guard           AI-generate NPC
ainpc speak NPC_ID "text"             NPC voice (TTS)
ainpc status                          Quick overview
ainpc --help                          Full reference

Environment Variables

code

AINPC_API_KEY=your-key
AINPC_GAME_ID=my-rpg
AINPC_BASE_URL=https://ainpcengine.com   # optional

name	string	required	Studio display name, e.g. "My Game Studio"
email	string	required	Human email. Used to log in and activate the trial.
password	string	required	Account password (min 8 characters)
plan	string	optional	Plan (default: indie, $29/mo after trial)

Ainpc Cli

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

Topics

ainpc_get_started

ainpc_signup

ainpc — AINPCEngine CLI & MCP Server

Meet the NPCs

See It In Action

Why AINPCEngine

Pricing

Install

Get Your API Key

Quick Start

Per-Project Config

Agent Integration

MCP Server

Commands

Environment Variables

Links

License

Install

Configuration