Beta — early access is invite-only right now. Request access →
nostackai beta
Request Access
Every API you build is auto MCP-enabled

Build AI agents and backend APIs in your browser - any ai model, no vendor lock-in.

100% browser-based, serverless Backend-as-a-Service - fast enough to vibe-code a prototype, secure and scalable enough for production. Every API you build is automatically MCP-enabled, so any AI client can extend it directly.

Request Early Access See How It Works
Every API MCP-Enabled
Agentic AI
Custom Logic Blocks
Metadata-Driven APIs
GDPR + DR Compliant
Multi-Region
Multi-Tenant Isolation
MCP-native

Every API you build is auto MCP-enabled.

NoStackAI runs a real MCP (Model Context Protocol) server out of the box - nothing to expose manually, no integration to write. Mint an API key, point Claude Code, Claude Desktop, or Cursor at it, and the AI can read your platform's capabilities and build entities, logic blocks, events, and connectors directly.

  • Create an entity and its CRUD endpoints are instantly callable by the same AI - the live API reference and your current entity list are both served over the same MCP connection
  • One MCP server covers every API category: entities, logic blocks, events, connectors, AI providers, roles
  • Works with Claude Code, Claude Desktop, Cursor, and any MCP-compatible client
  • Scoped API keys are dev-only by default - a connected AI can never touch production
  • No custom MCP server to write or host - it's already running for every org
Claude Code · connected via MCP
01 create_entity Order · fields, ACL, indexes created
02 create_logicblock enrich_lead · 3 steps created
03 create_event Order.created → webhook created
04 get_platform_capabilities grounding next request ready
Agentic AI

Build AI agents that actually do things.

NoStackAI's Logic Blocks are your native agentic layer. An agent is a pipeline of steps - fetch data, reason with an LLM, call a tool, loop, decide - all configured in a visual builder, executed as a production API endpoint. No LangChain setup. No infra. No multi-tenancy to solve.

ai_call

Classify, summarize, extract

Single-shot LLM steps for translation, generation, structured extraction.

ai_agent

Tool-use loop

Model calls your other APIs as tools - bounded, observable, deterministic.

ai_compare

Run providers in parallel

Fan out to Anthropic, OpenAI, Gemini at once - return the ranked output.

get_entity · list_entities

Operate on live data

Agents read and write your real entities, with ACL and tenant scoping enforced.

webhook

Call any HTTPS endpoint

Map request/response. Bring your own Lambda, Stripe, internal service.

condition · loop

Branch and iterate

Real control flow. Decision trees and retries without writing code.

Explore Logic Blocks
studio.nostackai.com · entities / Customer
Entities
Customer
Order
Session
Webhook
ACL
owner
tenant_admin
Customer
multi-tenant
id uuid primary
email string indexed
password string write-only
tier enum free·pro
GET /api/customers/:id auto
LIST /api/customers?owner=me auto
POST /api/customers auto
PATCH /api/customers/:id auto
DEL /api/customers/:id auto
APIs without code

Your entities, your APIs - configured, not coded.

Define your data model in API Studio. NoStackAI generates GET / LIST / CREATE / UPDATE / DELETE endpoints instantly, with ACL enforcement, field encryption, multi-tenant scoping, and OpenSearch-powered list queries - all from a config record, not a Lambda.

  • IAM-like ACL policies stored in DynamoDB, evaluated per request
  • Field-level AES-256 encryption for passwords, PII, and secrets
  • OpenSearch query layer for flexible filters, pagination, owner scoping
  • Test and production environments with one-click deployment pipeline
logic-block · enrich_lead.json
// logic-block: enrich_lead
// trigger: POST /api/agents/enrich

step "lookup_company":
  webhook  → POST "https://internal/api/co/{{ input.domain }}"
  map      → company = response.body

step "score":
  ai_agent
    provider   = "anthropic"     // per-tenant key
    tools      = [search_crm, get_signals]
    max_steps  = 6
  map      → score = output.score

step "persist":
  update_entity Lead { id, score, company }

return { lead_id, score, company }
Escape hatch

Write code when config isn't enough.

Logic Blocks support webhook steps to call any external service or your own Lambda. Bring your own AI provider keys. Override model defaults per tenant. NoStackAI is the platform - your code runs inside it, not the other way around.

  • Webhook steps call any HTTPS endpoint with request/response mapping
  • Per-tenant AI provider key override (Anthropic, OpenAI, Gemini)
  • Connector steps for pre-built integrations with tenant credential management
  • Formula and transform steps for data reshaping without code
Integrations · iPaaS

Payments, CRM, messaging - connected, not coded.

Built-in connectors with outbound actions and signed inbound webhooks. Enable a connector for your org, and each tenant brings their own credentials - take a Stripe payment, update Salesforce, or post to Slack from a Logic Block, an automation, or a single API call. Adding a provider is config, not code.

payments

Stripe

Create checkout sessions, cancel payments, and receive signed payment webhooks - take payment with one API call.

sms

Twilio

Send SMS from automations and Logic Blocks - alerts, OTPs, notifications.

messaging

Slack

Post to channels on any entity event or pipeline step.

messaging

Microsoft Teams

Send messages to Teams channels from your workflows.

email

Email

Transactional email with templates, fired by automations.

crm

HubSpot

Create and update contacts, deals, and companies.

crm

Salesforce

Create, update, and upsert any Salesforce object.

storage

Amazon S3

Write objects to your own buckets.

automation

Zapier

Trigger Zaps - fan out to 7,000+ connected apps.

http

Webhook

Call any HTTPS API - POST / PUT with mapped request and response.

How it works

Three steps to production.

From a blank workspace to a tenant-isolated agentic API - without spinning up a single Lambda.

01 Model

Model your data

Define entities and fields in API Studio. CRUD APIs, ACL, and search are generated automatically.

02 Compose

Build your logic

Chain steps into a Logic Block: fetch data, call an AI, apply conditions, call webhooks.

03 Ship

Deploy and scale

Publish to production with one click. Each customer gets their own isolated AWS stack. NoStackAI handles the rest.

Compliance & reliability

Enterprise-grade from day one.

Per-customer AWS stacks. Encrypted fields. Independent control plane. The boring infrastructure problems - already solved.

GDPR Compliant

Data residency controls, field-level encryption, right-to-erasure support.

Disaster Recovery

Multi-region app stacks, independent control plane, zero shared data between customers.

AES-256 Encryption

Encrypted at rest (SSM KMS), encrypted in transit, write-only fields never returned in responses.

Per-Customer Isolation

Every org runs its own DynamoDB tables and Lambda stack. No shared database, no noisy neighbor.

vs. the alternatives

Other tools give you pieces. NoStackAI is the complete platform.

The honest comparison. Where we win, where others are also fine, and where you'd be wiring it yourself.

Capability NoStackAI LangChain / LangGraph OpenAI Assistants Firebase / Supabase Bubble / Webflow
Agentic AI (tool-use loop)
✓Built in
✓Code only
✓Managed
✕
✕
MCP-native - any AI client builds it
✓Built in
!DIY
✕
✕
✕
Multi-tenant data isolation
✓Per-org stack
✕DIY
✕DIY
!App-level
✕
Production API in minutes
✓Config-driven
✕Write & deploy
✕Not API
!
!No-code
GDPR + DR compliance
✓
✕
!Terms
!
✕
Custom code escape hatch
✓Webhooks
✓
✕
✓
✕
No infrastructure to manage
✓
✕
✓
✓
✓
Per-tenant AI key override
✓
✕
✕
✕
✕
Deploy test → prod pipeline
✓With rollback
✕
✕
!Manual
✕
Ready when you are

Your AI platform is three steps away.

Define entities. Build a Logic Block. Go to production.

Request Early Access Talk to Us