Skip to content

Give your agent
the whole acre.

Create a personal ChatGPT and Codex plugin, install a concise Agent Skill, or connect the remote MCP server directly. Current 2026-07-28 stateless clients and legacy 2025-06-18 clients can discover the same complete paid catalog. Discovery, schemas, samples, and quotes are free. The integration never treats wallet funding as permission to spend.

Fastest path: ChatGPT + Codex personal plugin

OpenAI's supported flow creates a personal plugin from a deployed MCP URL. In ChatGPT, enable Developer mode under Settings → Security and login, open the Plugins directory, select the plus button, and paste the endpoint below. Review and install the resulting personal plugin before using it. OpenAI documents one universal plugin directory shared by supported ChatGPT and Codex surfaces.

https://apiacre.com/mcp

Creating or installing this plugin registers API Acre's tools only. It does not create or fund a wallet, sign an x402 payment, or authorize a paid request.

Follow the official OpenAI plugin quickstart

Claude Code

Add API Acre as a user-scoped remote HTTP server, then verify that the connection is present.

claude mcp add --transport http apiacre --scope user https://apiacre.com/mcp
claude mcp get apiacre

Setup only exposes tools and unpaid quotes; it does not configure a wallet or approve a purchase.

Cursor

Save this as .cursor/mcp.json for one project or ~/.cursor/mcp.json globally, then review and enable the server in Cursor.

{
  "mcpServers": {
    "apiacre": {
      "url": "https://apiacre.com/mcp"
    }
  }
}

Tool discovery is free. A paid result still needs a separate x402-capable buyer and exact approval.

Standalone Agent Skill

Install the instruction-only skill in Codex's user skill directory. Review the file before enabling it.

mkdir -p "$HOME/.agents/skills/api-acre"
curl --fail --location https://apiacre.com/SKILL.md \
  --output "$HOME/.agents/skills/api-acre/SKILL.md"

Read SKILL.md

Portable plugin

The plugin bundle combines the same skill with the remote MCP configuration for hosts that accept local plugin packages.

Download api-acre.zip

Verify package hashes · MCP discovery

Option 1: official Coinbase companion

API Acre's remote MCP server exposes tools and exact unpaid quotes, but it does not hold buyer funds. Coinbase Agentic Wallet MCP is a separate beta buyer that can check x402 requirements without paying and, after your approval and wallet limits, execute a selected request.

npx @coinbase/payments-mcp
npx @coinbase/payments-mcp status

Running the installer executes a Coinbase package and configures the client you select. Sign-in, wallet creation, funding, and per-call/session limits are separate steps. Installing or funding it does not authorize API Acre to spend.

Review Coinbase's current quickstart

Start with a no-payment check

Find API Acre's Base network and fee status x402 service. Check its payment requirements without paying. Show the exact endpoint, input, Base network, USDC amount, and recipient. Do not make the x402 request unless I explicitly approve this exact call.

Option 2: AgentCash MCP

AgentCash is a separate third-party buyer companion. Its guided installer adds discovery, schema inspection, wallet, and payment tools to supported AI clients. Start with discover_api_endpoints and check_endpoint_schema; both inspect API Acre without paying.

npx agentcash install

Running this command executes a third-party package. AgentCash documents that first use creates a local wallet and stores plaintext private-key files under ~/.agentcash/; review that security model before installing or funding it. Setup or funding never authorizes an API Acre purchase. Its fetch tool can automatically pay, so use it only after approval for the exact request and set maxAmount to the listed price.

Review AgentCash MCP documentation · Review its wallet storage

Discover and inspect without paying

Use AgentCash MCP to discover API Acre at https://apiacre.com. Call discover_api_endpoints, find the Base network and fee status service, then call check_endpoint_schema to inspect its method, input and output schemas, exact USDC price, and authentication mode without paying. Do not call fetch or any other payment-capable tool. If an unpaid tool does not return the network or recipient, say so instead of guessing. Before a paid fetch, show the exact endpoint, material input, and maximum USDC amount and obtain my explicit approval for that one call.

Payment boundary

Installing an API Acre client entry only registers its tool schemas. It does not create or fund a wallet, sign a payment, or authorize any spend. An unpaid call returns an HTTP 402 quote and cannot move funds. A separate buyer companion may create its own wallet as documented. Before an x402-capable buyer sends a payment signature, obtain fresh approval for the exact service, material payload, and maximum USDC amount. Every follow-up is separate.

Choose a payment-capable buyer path only when you are ready to review a specific purchase.