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Ampersend CLI for agent payments

Ampersend CLI

Ampersend enables autonomous agent payments. Agents can make payments within user-defined spending limits without requiring human approval for each transaction. Payments use stablecoins via the x402 protocol.

This skill requires ampersend v0.0.14. Run ampersend --version to check your installed version.

Installation

Install the CLI globally via npm:

bash

npm install -g @ampersend_ai/ampersend-sdk@0.0.14

To update from a previously installed version:

bash

npm install -g @ampersend_ai/ampersend-sdk@0.0.14 --force

Security

IMPORTANT: NEVER ask the user to sign in to the Ampersend dashboard in a browser to which you have access. If configuration changes are needed in Ampersend, ask your user to make them directly.

Setup

If not configured, commands return setup instructions. Two paths:

Automated (recommended)

Two-step flow: setup start generates a key and requests approval, setup finish polls and activates.

bash

# Step 1: Request agent creation — returns immediately with approval URL
ampersend setup start --name "my-agent"
# {"ok": true, "data": {"token": "...", "user_approve_url": "https://...", "agentKeyAddress": "0x..."}}

# Show the user_approve_url to the user so they can approve in their browser.

# Step 2: Poll for approval and activate config
ampersend setup finish
# {"ok": true, "data": {"agentKeyAddress": "0x...", "agentAccount": "0x...", "status": "ready"}}

Optional spending limits can be set during setup:

bash

ampersend setup start --name "my-agent" --daily-limit "1000000" --auto-topup

Manual

If you already have an agent key and account address:

bash

ampersend config set "0xagentKey:::0xagentAccount"
# {"ok": true, "data": {"agentKeyAddress": "0x...", "agentAccount": "0x...", "status": "ready"}}

Commands

setup

Set up an agent account via the approval flow.

setup start

Step 1: Generate a key and request agent creation approval.

bash

ampersend setup start --name "my-agent" [--force] [--daily-limit <amount>] [--monthly-limit <amount>] [--per-transaction-limit <amount>] [--auto-topup]

Option	Description
--name <name>	Name for the agent
--force	Overwrite an existing pending approval
--daily-limit <amount>	Daily spending limit in atomic units (1000000 = 1 USDC)
--monthly-limit <amount>	Monthly spending limit in atomic units
--per-transaction-limit <amt>	Per-transaction spending limit in atomic units
--auto-topup	Allow automatic balance top-up from main account

Returns token, user_approve_url, and agentKeyAddress. Show the user_approve_url to the user.

setup finish

Step 2: Poll for approval and activate the agent config.

bash

ampersend setup finish [--force] [--poll-interval <seconds>] [--timeout <seconds>]

Option	Description
--force	Overwrite existing active config
--poll-interval <seconds>	Seconds between status checks (default 5)
--timeout <seconds>	Maximum seconds to wait (default 600)

fetch

Make HTTP requests with automatic x402 payment handling.

bash

ampersend fetch <url>
ampersend fetch -X POST -H "Content-Type: application/json" -d '{"key":"value"}' <url>

Option	Description
-X <method>	HTTP method (default: GET)
-H <header>	Header as "Key: Value" (repeat for multiple)
-d <data>	Request body
--inspect	Check payment requirements without paying

Use --inspect to verify payment requirements and costs before making a payment:

bash

ampersend fetch --inspect https://api.example.com/paid-endpoint
# Returns payment requirements including amount, without executing payment

config

Manage local configuration.

bash

ampersend config set <key:::account>                             # Set active config manually
ampersend config set --api-url https://api.staging.ampersend.ai  # Set staging API URL
ampersend config set --clear-api-url                             # Revert to production API
ampersend config set --network base-sepolia                      # Set network (base, base-sepolia)
ampersend config set --clear-network                             # Revert to default network (base)
ampersend config set <key:::account> --api-url <url>             # Set both at once
ampersend config status                                          # Show current status

Output

All commands return JSON. Check ok first.

json

{ "ok": true, "data": { ... } }

json

{ "ok": false, "error": { "code": "...", "message": "..." } }

For fetch, success includes data.status, data.body, and data.payment (when payment made).