Invoice Preflight x402 MCP alternatives

1

Blockrun

by BlockRunAI

B

Web search, deep research, prediction markets & crypto data for AI agents. Pay per call via x402.

2

Agent402.Tools: pay-per-call web tools

by MikeyPetrillo

A

Agentic Finance: 500+ agent tools, multi-chain USDC over x402 or MPP, free via PoW or card credits

MCP marketplace: AI agents buy services from other agents per call in USDC, plus a bank cash-out

4

Stelar Signals

by StelarDigital

A

Crypto market signals and portfolio telemetry. 6 tools pay-per-call in USDC, no API key.

5

Signalfuse

by hypeprinter007-stack

B

11 tools: crypto signals, sentiment, macro regime, arena, search, exec. x402 pay-per-call.

Pay-per-call MCP tools (crypto/DeFi data, web reading, AI tasks) in USDC over x402 on Base.

7

Permitverdict

by okwithit9-debug

C

Crypto price-event settlement verdicts and US building-permit data, paid per call in USDC.

8

three.ws Agent Payments

by nirholas

B

Governed x402 payment sessions: pay any endpoint with budget, allowlist & per-tx caps, no key.

Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.

10

Hive Intelligence MCP

by hiveintelligence.xyz

B

Evidence-backed crypto due diligence with sources, freshness, and a runtime receipt on every call.

11

three.ws Tutor

by nirholas

A

Read a Pay-As-You-Learn tutoring session's itemized tab and close it for an attested invoice.

12

X402 List

by x402-list.com

A

Find and vet x402 payment APIs before your agent pays one: uptime, price, on-chain volume.

13

AlgoVault — Crypto Quant Trade Calls

by AlgoVaultFi

A

The Brain Layer for AI Trading Agents — quant calls + cross-venue arb across perp venues via MCP.

14

E Arveldaja

by iseppo

B

Estonian e-arveldaja (RIK e-Financials) accounting — invoices, bank import, reports.

15

PipRail

by piprail

B

Budget-bound x402 payment wallet for AI agents — pays HTTP 402 URLs, capped locally. No backend.

16

Xero

by mindstone

A

Xero MCP server for invoices, contacts, payments, quotes, and financial reports.

17

QuickBooks Online

by mindstone

A

QuickBooks Online MCP server: invoices, bills, customers, vendors, employees, and accounts

18

K-Data — Korean Sell-Side Research & Market Data

by juh5ng

A

Korean equity research, analyst revisions, kimchi premium and news via x402.

19

MCP

by transparentpt

B

Budget used cars in Portugal: fair-price check, running-cost (IUC) estimate, stock search, contact.

20

Invoice Intake (reference)

by justdukkan.com

A

Reference invoice-intake MCP servers: read/draft/commit split, typed errors, approval gate, audit

21

POPCORN MCP

by violetclaire

B

Signed time and SHA-256 witness receipts for agents, with offline verification and x402 payment.

22

Monapay

by monapay.vn

B

MONA Pay for AI agents: create VietQR, check bank transfers, webhooks & HMAC. Vietnam bank API, VND

23

IronWallet

by ironwallet.io

A

Non-custodial crypto wallet MCP: check balances, sign and send transfers, and swap tokens locally.

Eqvitta MCP: GST billing, ledgers, invoices, stock and financial reports for Claude.