Nebula MCP: Stellar Blockchain Wallet for AI Agents

Nebula is an MCP server that gives your AI agent a real Stellar blockchain wallet — no custodian, no intermediary, no human in the loop. Connect it to Claude Desktop, Claude Code, or any MCP-compatible framework in seconds, set your spending policy, and let your agent pay for APIs, earn yield on idle funds, and build on-chain reputation automatically.

Introduction

Understand what Nebula is, why it exists, and what your agent gains when you connect it.

Quickstart

Add Nebula to your MCP config, fund your wallet, and run your first automated payment in under 5 minutes.

Tools Reference

Full reference for all 23 tools — parameters, environment variables, and example prompts.

Configuration

Every environment variable explained: wallet keys, network, spending limits, treasury settings, and agent identity.

What your agent gets

Connect Nebula once and your agent immediately has access to a full suite of financial and identity capabilities — all on Stellar.

Wallet & Transfers

Hold XLM and USDC, check balances, and send transfers. Everything you expect from a real wallet.

x402 Payments

Auto-pay HTTP 402-gated APIs with USDC the moment they respond. No approval step, no manual intervention.

MPP Sessions

Open one on-chain channel, stream off-chain micropayment commits, and settle in a single transaction when done.

Treasury Yield

Idle funds auto-deposit into Blend lending pools and withdraw automatically when your agent needs liquidity.

On-Chain Spending Policy

Per-call and rolling daily caps enforced by a Soroban smart contract. Your agent physically cannot exceed them.

Agent Identity & Reputation

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