AgentPay — 
Most agent-payment tools are a wallet — they move money. AgentPay is the layer that decides whether to spend it at all.
AgentPay is the economic intelligence layer for MCP servers and AI agents.
Agents spend money. Most don't know how much, or why, until the session ends and the bill arrives.
AgentPay gives agents economic intelligence — the ability to reason about cost while they work, not after.
It starts with a budget. Every session opens with a hard cap enforced at the payment layer — not in code a model can ignore, but at the point where money moves. The agent knows from the first call exactly what it has to spend.
Before calling a tool, it knows what that call costs. Mid-task, it can check what's left and route to a cheaper alternative if the math doesn't work. When the session ends, a receipt captures every call, every cost, every decision — not a debug log, but proof of economic accountability.
The developer sees all of it: spending patterns per agent, anomaly flags when something loops or spikes, policy controls that enforce exactly which tools an agent can use and how much it can spend on each.
The result is an agent that doesn't just have a budget. It knows how to use one.
Start free: 19 tools (17 free), no USDC needed, no wallet setup required.
Live gateway: https://agentpay.tools
Install
pip install agentpay-x402 # core (Stellar)
pip install "agentpay-x402[base]" # + pay tools that settle on Base
Quickstart — 3 lines, zero setup
17 free tools. No USDC, no wallet, no API keys, no human. quickstart() registers
an agent, mints a wallet, and returns a ready, budget-capped session.
from agentpay import quickstart
s = quickstart() # registers + mints a wallet
print(s.call("token_price", {"symbol": "ETH"})["result"]["price_usd"])
print(s.spending_summary()) # receipt: every call, cost, tx
Set a hard budget, or bring your own funded wallet to pay for tools:
s = quickstart(max_spend="0.50") # cap this run at $0.50
s = quickstart(secret_key="S...", base_key="0x...") # your wallet (Stellar + Base)
Every call is session-tracked, and the cap is enforced before any payment is signed.
19 Tools (17 Free + 2 Paid)
Every call is session-tracked — you get a receipt showing every tool called, every cost, and every timestamp.
| Tool | Parameters | Returns |
|---|
url_reader | url | Clean markdown content of any web page |
web_search | query | Top 5 results with full content |
market_snapshot | — | S&P 500, Treasury yield, BTC, ETH, gas in one call |
token_price | symbol (BTC, ETH, SOL…) | price_usd, change_24h_pct, market_cap_usd |
gas_tracker | — | slow/standard/fast gwei, base_fee_gwei |
fear_greed_index | limit (days of history, default 1) | value 0–100, value_classification, history[] |
token_market_data | token_a, token_b | volume_24h_usd, market_cap_usd, price_usd |
wallet_balance | address, chain (ethereum/stellar) | token balances |
whale_activity | token, min_usd (default 100k) | large_transfers[] with direction, total_volume_usd |
defi_tvl | protocol (optional, e.g. "uniswap") | tvl, change_1d, change_7d, chains[] |
token_security | contract_address, chain | risk_level, is_honeypot, buy_tax, sell_tax |
open_interest | symbol (BTC, ETH…) | total_oi_usd, oi_change_1h/24h_pct, long_short_ratio |
orderbook_depth | symbol (e.g. ETHUSDT) | best_bid/ask, spread_pct, slippage at $10k/$50k/$250k |
funding_rates | asset (optional) | funding_rate_pct, annualized_rate_pct, sentiment per exchange |
crypto_news | currencies (e.g. "ETH,BTC"), filter | headlines[] with title, url, sentiment, score |
yield_scanner | token, chain (optional), min_tvl | top 10 pools by APY with protocol, tvl_usd, risk_level |
dune_query | query_id, limit, fast_only | rows[], columns[], row_count from Dune Analytics |
session_create | agent_address, max_spend, label | session_id, budget config, gateway_url, receipt — $0.01 |
pre_trade_check | symbol, size_usd, side, token_address? | one-call trade verdict (ok/caution/avoid): slippage at YOUR size, side-aware funding carry, OI crowding, optional security — $0.01 |
Session Intelligence
This is the economic intelligence layer in practice. The Session gives your agent — and you — real visibility into what happened, what it cost, and why.
from agentpay import quickstart, BudgetExceeded
