three.ws 3D Studio (free) alternatives

1

X402 List

by x402-list.com

A

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

2

PipRail

by piprail

B

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

3

Churnkey

by churnkey.co

A

Read and manage Churnkey cancel flows, retention metrics, and payment recovery

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

5

POPCORN MCP

by violetclaire

B

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

6

Easypaydirect

by praveendias1180

B

Read-only MCP server for the Easy Pay Direct (EPD) / NMI-family payment gateway Query API.

7

payware

by payware

B

payware A2A payments API for merchants, ISVs and payment institutions

8

Kontor MCP

by DashankaNadeeshanDeSilva

B

Offline e-invoice tools for AI agents: validate, audit, convert and generate XRechnung/ZUGFeRD.

9

X402 Data Gateway

by epistemedeus

B

Paid x402 and MPP tools for agent discovery, payment safety, data, and DeFi.

Lint an HTTP endpoint's x402 402 conformance; decode X-PAYMENT blobs; inspect a facilitator.

11

Pexafy

by pexafy.com

A

Semantic search over free-to-use stock photos from 9 libraries: by words, image, or similar.

12

AurasPay Merchant MCP

by auraspay.com

A

Review AurasPay merchant payments and prepare payment links with scoped OAuth and human approval.

13

gate402 merchant checkout

by ogenalabs.com

A

Drop-in x402 checkout for merchants: issue terms, verify payment. $0.01 each.

14

RoundWatch

by Vladyslav-webDev

A

Durable Algorand USDC payment monitoring for autonomous workflows.

Israeli invoice payment gate with PAY/HOLD/BLOCK decisions and public company-registry evidence.

16

Benji Pays

by bpays

A

Sits between accounting and payment rails for reminders, Pay Now, autopay, portal, and book sync.

17

Anyway Possible Paid Agent Utilities

by anyway-possible

A

Paid x402 tools for merchant intelligence, Base payment readiness, and verifiable web evidence.

18

Recurring Invoice Scheduler Subscription Billing Due Reminders

by theluckystrike

A

Recurring invoices on a schedule: define once, generate the due PDFs, forecast revenue.