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Tabularium

Official registry AI and agents

Agent memory and a signed spending ledger: pay any x402 API, keep a provable receipt.

Source code Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package tabularium-mcp
Claude Code 
claude mcp add tabularium -e 'TABULARIUM_PRIVATE_KEY=<your tabularium_private_key>' -e 'TABULARIUM_MAX_SPEND_USD=1' -e 'TABULARIUM_URL=<TABULARIUM_URL>' -e 'TABULARIUM_PAY_MAX_USD=0.10' -e 'TABULARIUM_PAY_NETWORKS=<TABULARIUM_PAY_NETWORKS>' -e 'TABULARIUM_PUBKEY=<TABULARIUM_PUBKEY>' -- npx -y tabularium-mcp@0.3.3
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "tabularium": {
            "command": "npx",
            "args": [
                "-y",
                "tabularium-mcp@0.3.3"
            ],
            "env": {
                "TABULARIUM_PRIVATE_KEY": "<your tabularium_private_key>",
                "TABULARIUM_MAX_SPEND_USD": "1",
                "TABULARIUM_URL": "<TABULARIUM_URL>",
                "TABULARIUM_PAY_MAX_USD": "0.10",
                "TABULARIUM_PAY_NETWORKS": "<TABULARIUM_PAY_NETWORKS>",
                "TABULARIUM_PUBKEY": "<TABULARIUM_PUBKEY>"
            }
        }
    }
}

Environment variables

  • TABULARIUM_PRIVATE_KEY required secret 0x-prefixed EVM private key of the wallet that pays (use a dedicated wallet with a small USDC balance)
  • TABULARIUM_MAX_SPEND_USD Spend cap for this server process, in USD
  • TABULARIUM_URL Service base URL (defaults to the public deployment)
  • TABULARIUM_PAY_MAX_USD tabularium_pay: most one purchase may cost, in USD (ceiling 0.50)
  • TABULARIUM_PAY_NETWORKS tabularium_pay: comma-separated networks it may pay on; default is the service's own network. eip155:8453 is mainnet (real money).
  • TABULARIUM_PUBKEY Optional pinned Ed25519 signing key (hex) that exports must verify against

Frequently asked questions

What is Tabularium?

Agent memory and a signed spending ledger: pay any x402 API, keep a provable receipt.

How do I install Tabularium?

It runs on your machine. In Claude Code: claude mcp add tabularium -e 'TABULARIUM_PRIVATE_KEY=<your tabularium_private_key>' -e 'TABULARIUM_MAX_SPEND_USD=1' -e 'TABULARIUM_URL=<TABULARIUM_URL>' -e 'TABULARIUM_PAY_MAX_USD=0.10' -e 'TABULARIUM_PAY_NETWORKS=<TABULARIUM_PAY_NETWORKS>' -e 'TABULARIUM_PUBKEY=<TABULARIUM_PUBKEY>' -- npx -y tabularium-mcp@0.3.3. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Tabularium need an API key?

Yes. It expects TABULARIUM_PRIVATE_KEY, which you set in its configuration.

Is Tabularium open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Tabularium?

It is published by SQLazy. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.