hekkova

Hekkova MCP Server

The permanent memory layer for AI agents. Connect any MCP-compatible AI (Claude, ChatGPT, Gemini, Cursor, custom agents) and mint moments — photos, videos, audio, text — permanently to the Polygon blockchain with IPFS + Filecoin storage, Lit Protocol encryption, and privacy tiers that let you control who sees what.

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Quick Start

# 1. Install dependencies
npm install

# 2. Copy and configure environment variables
cp .env.example .env
# Edit .env with your Supabase, Thirdweb, Pinata, and Stripe credentials

# 3. Seed the local test account and API key
npm run seed

# 4. Start the development server
npm run dev
# → Server running at http://localhost:3000/mcp

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Connect with Claude Desktop

Add this to your Claude Desktop config file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "hekkova": {
      "type": "url",
      "url": "http://localhost:3000/mcp",
      "headers": {
        "Authorization": "Bearer hk_test_local_dev_key_12345678"
      }
    }
  }
}

For production, replace the URL and API key:

{
  "mcpServers": {
    "hekkova": {
      "type": "url",
      "url": "https://mcp.hekkova.com/mcp",
      "headers": {
        "Authorization": "Bearer hk_live_YOUR_API_KEY"
      }
    }
  }
}

Get your API key at hekkova.com/dashboard/keys.

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Tool Reference

Tool	Description
mint_moment	Mint media (photo, video, audio, text) permanently to Polygon. Encrypts based on phase, pins to IPFS, mints ERC-721 NFT. Returns a Block ID.
mint_from_url	Fetch a public URL (tweet, Instagram post, image, web page) and mint it. Extracts og:title and og:image automatically.
list_moments	Paginated list of all minted moments. Filterable by phase, category, or search query.
get_moment	Full details for a single moment by Block ID: CIDs, transaction hash, phase, tags, and more.
update_phase	Change a moment's privacy phase. Costs 1 credit (text/image) or 2 credits (video). Legacy Plan includes 10 free Phase Shifts/month.
export_moments	Export all moments as JSON or CSV. Returns a 24-hour download URL with all Block IDs and IPFS CIDs.
get_balance	Check remaining mint credits, current plan (free / arc_builder / legacy), and phase shift balance.
get_account	Account identity: Light ID, display name, wallet address, default phase, and legacy plan status.

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Privacy Phases

Phase	Access	Encryption
new_moon	Owner only	Lit Protocol (owner wallet ACC)
crescent	Close circle (2–10 people)	Lit Protocol (shared access conditions)
gibbous	Extended group (up to 50)	Token-gated via Hekkova ERC-721
full_moon	Fully public	None

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Moment Categories

Category	Meaning
super_moon	Major life event
blue_moon	Rare moment
super_blue_moon	Once-in-a-lifetime
eclipse	Time-locked — sealed until eclipse_reveal_date
null	Uncategorized

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Rate Limits

Plan	Requests/min	Mints/min
Sandbox (test keys)	10	1
Standard (any paid pack)	60	10
Legacy Plan	120	20

Rate limit headers are included on every response:

X-RateLimit-Limit: 60
X-RateLimit-Remaining: 58
X-RateLimit-Reset: 1710680460

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Running Tests

# Make sure the server is running in another terminal
npm run dev

# Run the test client
npm run test-client

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Deployment

Vercel (Serverless)

npm install -g vercel
vercel

Add a vercel.json:

{
  "builds": [{ "src": "src/server.ts", "use": "@vercel/node" }],
  "routes": [{ "src": "/(.*)", "dest": "src/server.ts" }]
}

Set all environment variables in the Vercel dashboard under Project → Settings → Environment Variables.

Railway

npm install -g @railway/cli
railway login
railway init
railway up

Set environment variables in the Railway dashboard. Railway will auto-detect the npm start script.

Fly.io

npm install -g flyctl
fly auth login
fly launch

Fly will generate a fly.toml. Set secrets with:

fly secrets set SUPABASE_URL=... SUPABASE_SERVICE_KEY=... THIRDWEB_SECRET_KEY=...
fly deploy

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Project Structure

hekkova-mcp/
├── src/
│   ├── server.ts          # Express + MCP server, auth middleware, rate limiter
│   ├── config.ts          # Typed config from environment variables
│   ├── types/index.ts     # TypeScript interfaces (Account, Moment, ApiKey, etc.)
│   ├── services/
│   │   ├── auth.ts        # API key validation and hashing
│   │   ├── database.ts    # Supabase queries (moments, accounts, API keys)
│   │   ├── blockchain.ts  # Thirdweb/Polygon minting (stub → real)
│   │   ├── storage.ts     # Pinata IPFS pinning (stub → real)
│   │   └── encryption.ts  # Lit Protocol encryption (stub → real)
│   └── tools/
│       ├── mint-moment.ts
│       ├── mint-from-url.ts
│       ├── list-moments.ts
│       ├── get-moment.ts
│       ├── update-phase.ts
│       ├── export-moments.ts
│       ├── get-balance.ts
│       └── get-account.ts
├── scripts/
│   ├── seed.ts            # Creates test account + API key in Supabase
│   └── test-client.ts     # Exercises all 8 tools against the running server
├── package.json
├── tsconfig.json
├── .env.example
└── README.md

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Supabase Schema

You will need these tables in your Supabase project:

-- Accounts
create table accounts (
  id text primary key default gen_random_uuid()::text,
  display_name text not null,
  light_id text,
  wallet_address text,
  mints_remaining integer not null default 0,
  total_minted integer not null default 0,
  default_phase text not null default 'new_moon',
  legacy_plan boolean not null default false,
  created_at timestamptz not null default now()
);

-- API Keys
create table api_keys (
  id text primary key default gen_random_uuid()::text,
  account_id text not null references accounts(id) on delete cascade,
  key_hash text not null unique,
  key_prefix text not null,
  environment text not null default 'live',
  created_at timestamptz not null default now(),
  revoked_at timestamptz
);

-- Moments
create table moments (
  id text primary key default gen_random_uuid()::text,
  account_id text not null references accounts(id) on delete cascade,
  block_id text not null unique,
  token_id integer not null,
  title text not null,
  description text,
  phase text not null,
  category text,
  encrypted boolean not null default false,
  media_cid text not null,
  metadata_cid text not null,
  media_type text not null,
  polygon_tx text not null,
  source_url text,
  source_platform text,
  eclipse_reveal_date timestamptz,
  tags text[] not null default '{}',
  timestamp timestamptz not null default now(),
  created_at timestamptz not null default now()
);

-- Indexes
create index on api_keys(key_hash);
create index on moments(account_id, timestamp desc);
create index on moments(block_id);

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Full Spec

See the full technical specification: hekkova-mcp-server-spec.md

Production endpoint: https://mcp.hekkova.com/mcp