エージェントを強化
公開元自身のコマンドです。PlugMCP のエンドポイントではありません。
キーとログ付きでコピーをホスト。
npx -y @deepfirstsearch/[email protected]Claude Code にはローカルコマンド用のインストールリンクがありません。下のコマンドをコピーして、ターミナルで実行してください。
claude mcp add deepfirstsearch-agent-pay-mcp -- npx -y @deepfirstsearch/agent-pay-mcp@0.4.0ターミナルで実行します。
{ "mcpServers": { "deepfirstsearch-agent-pay-mcp": { "command": "npx", "args": [ "-y", "@deepfirstsearch/[email protected]" ] } }}claude_desktop_config.json
リモート URL か、手元のマシンのコマンドか 2 つのインストール方法の違い
PlugMCP で実行
A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.
起動公開元より
Safe rails for the agent economy. Search deep. Reveal only what you choose.
AI agents now pay for things over x402. Every one of those payments is public, and any agent can be talked into paying the wrong party. Deep First Search makes the model propose payments while the owner's signed policy decides.
MCP server: any MCP agent (Claude, Cursor...) pays x402 APIs inside an owner-signed, on-chain budget
No keys, no wallet, no chain: a local x402 merchant plays honest and hostile, and you watch the agent pay for data and refuse four attacks.
npx @deepfirstsearch/agent-pay demo
Already building an x402 client? See what it signs when the server lies — a swapped payee, fake decimals, no price cap — in one command:
npx @deepfirstsearch/x402-scan client @x402/fetch
x402-scan is a free, zero-dependency scanner (MIT); the findings explain what we keep seeing across published clients. The fix for everything it flags is the policy layer below.
The integrations take the SDK as a peer dependency, so your app always uses a single copy of it. Step-by-step guides for 40 x402 merchants, each tested with a real payment on Base mainnet, are in docs/integrations.
Full developer guide: deepfirstsearch.com/developers · building a wallet, framework or platform? Partners.
@deepfirstsearch/agent-pay-mcp is a stdio MCP server. The model gets three tools and nothing that can move money on its own terms:
{ "mcpServers": { "agent-pay": {
"command": "npx", "args": ["-y", "@deepfirstsearch/agent-pay-mcp", "/path/config.json"],
"env": { "AGENT_PAY_AGENT_KEY": "0x…", "AGENT_PAY_BURNER_SEED": "0x…" } } } }
Payees, prices and limits come from the config file and the owner-signed on-chain budget, never from the model or a 402 response, so a prompt-injected agent can't overspend or pay an attacker. Setup, config reference and a 5-minute Base Sepolia demo: integrations/mcp.
Status: pre-launch. Live on Base Sepolia, with a real x402 payment settled (see deployments); a capped beta on Base mainnet since 2026-10-06 (small amounts, our own funds first, then invited design partners). The TypeScript SDK has had an independent external review (findings fixed); the on-chain contracts are not yet audited — a professional audit comes before the public launch. No token exists.
# Contracts (needs Foundry: curl -L https://foundry.paradigm.xyz | bash && foundryup)
git submodule update --init --recursive
cd contracts && forge test
# SDK
cd ../sdk && npm ci && npm test && npm run demo
# Website
cd ../web && npm ci && npm run dev
$DEPTH.There's no telemetry in the packages, so we only know who uses them if you say so. If your agent pays with Agent Safe, even once on testnet, tell us in this discussion: what it pays for, what got refused that shouldn't have, and what's missing. We'll test your sellers live and write a verified guide for any that's missing.
See SECURITY.md to report vulnerabilities.
Built by Nicolas Tursi. General contact: [email protected]. Security reports: see SECURITY.md or write to [email protected].
MIT (contracts and SDK).
MCP server: any MCP agent (Claude, Cursor...) pays x402 APIs inside an owner-signed, on-chain budget
{ "mcpServers": { "deepfirstsearch-agent-pay-mcp": { "command": "npx", "args": [ "-y", "@deepfirstsearch/[email protected]" ] } }}ツール
ツール一覧はまだありません。リモートサーバーは、最初のヘルスチェック後に取得されます。
よくある質問
このページで Cursor、Claude Desktop、Claude Code、VS Code 用の stdio 設定をコピーできます。PlugMCP のプロキシではなく、公開元のインストール方法を使います。
このレコードに必須の環境変数は記載されていません。
@deepfirstsearch/agent Pay は stdio 経由でローカル実行されます。
最終チェックは 2026-11-10 です。 MCP server: any MCP agent (Claude, Cursor...) pays x402 APIs inside an owner-signed, on-chain budget