NullClear Arbiter alternatives
19 finance MCP servers from other publishers do the same job as NullClear Arbiter. The closest match comes first, then the best rated, with at most two per publisher.
Governed x402 payment sessions: pay any endpoint with budget, allowlist & per-tx caps, no key.
No reviews yetlocal · npm26590/wkFreeFind and vet x402 payment APIs before your agent pays one: uptime, price, on-chain volume.
No reviews yetgateway-ready2660/wkFreeBudget, payment and audit controls for AI agent API calls and MCP tool calls.
No reviews yetgateway-ready11347/wkFreeBuild any crypto agent: x402, ERC-8004, wallets. Does a server take your key? Hosted? Maintained?
No reviews yetgateway-ready15107/wkFreeVerify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.
No reviews yetgateway-ready103/wkFreeWeb search, deep research, prediction markets & crypto data for AI agents. Pay per call via x402.
No reviews yetlocal · npm393900/wkFreeAgentic Finance: 500+ agent tools, multi-chain USDC over x402 or MPP, or free via proof-of-work
No reviews yetgateway-ready39418/wkFreeLet AI agents add Yolfi crypto checkout, paylinks, webhooks, and status checks.
No reviews yetgateway-ready17841/wkFreeMCP server for QuickBooks Online (Intuit) — customers, invoices, payments, items, accounts, P&L
No reviews yetlocal · npm27137/wkFreeMCP server for Pluggy — Open Finance Brasil aggregator: accounts, transactions, payment initiation
No reviews yetlocal · npm27140/wkFreeFree text/image → 3D: generate, rig, avatar-ify, and refine GLB models. No auth, no payment.
No reviews yetgateway-ready213FreePayment layer for AI agents. One MCP, five protocols, thousands of paid APIs your agent can call.
No reviews yetlocal · npm23463/wkFreeInstall, configure, operate and integrate self-hosted PayRam crypto payment gateways.
No reviews yetgateway-ready158FreeSearch hotels worldwide, compare live room rates, and create booking payment links.
No reviews yetgateway-ready1561/wkFreeEuropean payment QR — SPAYD (CZ/SK) & EPC/GiroCode (SEPA), plus text/WiFi/vCard. Local, free.
No reviews yetgateway-ready641/wkFreeRead and manage Churnkey cancel flows, retention metrics, and payment recovery
No reviews yetgateway-ready22FreeAllow, ask, or veto — a policy decision point your agent consults before signing any payment
No reviews yetgateway-ready283/wkFreeXero MCP server for invoices, contacts, payments, quotes, and financial reports.
No reviews yetlocal · npm1259/wkFreePolish medicines: refunded drug prices, patient co-payment and cheaper substitutes
No reviews yetgateway-ready478/wkFree
NullClear Arbiter alternatives by what you need
Open source NullClear Arbiter alternatives (16)
Published under an open licence such as MIT or Apache-2.0.
three.ws Agent Payments, X402 List, SatGate – Economic Firewall for AI Agents, Pulsefeed X402, Blockrun, Agent402.Tools: pay-per-call web tools, Yolfi Payments MCP, Quickbooks and 8 more below.
Hosted NullClear Arbiter alternatives (13)
Nothing to install: a remote endpoint you add by URL. Also callable through the mcp.market gateway.
X402 List, SatGate – Economic Firewall for AI Agents, Sato Hub: Build Onchain & Crypto Agents, Pulsefeed X402, Agent402.Tools: pay-per-call web tools, Yolfi Payments MCP, three.ws 3D Studio (free), PayRam and 5 more below.
Local NullClear Arbiter alternatives (6)
A package you install and run on your own machine, so your data stays on your computer.
three.ws Agent Payments, Blockrun, Quickbooks, Pluggy, Mpp32, Xero.
Safest NullClear Arbiter alternatives (11)
Graded A: passed every check the scanner runs on the latest release.
X402 List, SatGate – Economic Firewall for AI Agents, Pulsefeed X402, Agent402.Tools: pay-per-call web tools, Yolfi Payments MCP, Fortrip, Payqr, Churnkey and 3 more below.
NullClear Arbiter and its alternatives compared
| Server | Grade | Rating | Licence | Runs | Stars |
|---|---|---|---|---|---|
| NullClear Arbiter(this one) | B82 | No reviews yet | MIT | Hosted | 1 |
| three.ws Agent Payments | B83 | No reviews yet | Apache-2.0 | Local | 265 |
| X402 List | A93 | No reviews yet | MIT | Hosted | 26 |
| SatGate – Economic Firewall for AI Agents | A88 | No reviews yet | Apache-2.0 | Hosted | 11 |
| Sato Hub: Build Onchain & Crypto Agents | B84 | No reviews yet | NOASSERTION | Hosted | 15 |
| Pulsefeed X402 | A93 | No reviews yet | MIT | Hosted | 0 |
| Blockrun | B82 | No reviews yet | MIT | Local | 393 |
| Agent402.Tools: pay-per-call web tools | A92 | No reviews yet | AGPL-3.0 | Hosted | 39 |
| Yolfi Payments MCP | A93 | No reviews yet | MIT | Hosted | 178 |
| Quickbooks | B82 | No reviews yet | MIT | Local | 271 |
| Pluggy | B82 | No reviews yet | MIT | Local | 271 |
| three.ws 3D Studio (free) | B81 | No reviews yet | Apache-2.0 | Hosted | 213 |
| Mpp32 | B75 | No reviews yet | MIT | Local | 234 |
| PayRam | B84 | No reviews yet | Not stated | Hosted | 158 |
| Fortrip | A99 | No reviews yet | Apache-2.0 | Hosted | 1 |
| Payqr | A85 | No reviews yet | MIT | Hosted | 6 |
| Churnkey | A100 | No reviews yet | MIT | Hosted | 22 |
| Boundra — Payment Approval Gateway for AI Agents | A93 | No reviews yet | Apache-2.0 | Hosted | 0 |
| Xero | A85 | No reviews yet | NOASSERTION | Local | 12 |
| Leki | A94 | No reviews yet | MIT | Hosted | 0 |