RoundWatch alternatives

1

three.ws Agent Payments

by nirholas

B

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

2

X402 List

by x402-list.com

A

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

3

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

5

PipRail

by piprail

B

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

6

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.

8

Stelar Signals

by StelarDigital

A

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

9

POPCORN MCP

by violetclaire

B

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

10

Easypaydirect

by praveendias1180

B

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

11

payware

by payware

B

payware A2A payments API for merchants, ISVs and payment institutions

12

X402 Data Gateway

by epistemedeus

B

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

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

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

15

AurasPay Merchant MCP

by auraspay.com

A

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

16

gate402 merchant checkout

by ogenalabs.com

A

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

17

AgentData — crypto market data with a checkable record

by speteai

A

Verifiable crypto signals, recorded history and always-on monitoring for AI agents via x402 on Base.

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

19

Benji Pays

by bpays

A

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

20

Anyway Possible Paid Agent Utilities

by anyway-possible

A

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