fullstack.cash alternatives
12 MCP servers, A2A agents and x402 APIs that also do on-chain data, x402 paid apis, ranked by how much they overlap with fullstack.cash (x402 paid API), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| fullstack.cash (this one) | x402 paid API | Yes | 1 | – |
| Bitrefill x402 | x402 paid API | Yes | 8 | 90/100 |
| Laso Finance | x402 paid API | Yes | 8 | 90/100 |
| x402scan | x402 paid API | Yes | 10 | 90/100 |
| Chit402 | x402 paid API | Yes | 1 | 89/100 |
| api-staging.vapinetwork.ai | x402 paid API | Yes | 1 | – |
| blockchain-api.x402-chain-tools.workers.dev | x402 paid API | Yes | 4 | – |
| blockchain.info | x402 paid API | Yes | 12 | – |
| Agent Economy OS 2047 — A2A Commerce Directory | A2A agent | Yes | 5 | 90/100 |
| AgentBIT API | x402 paid API | Yes | 12 | 90/100 |
| AgentPay Gateway | x402 paid API | Yes | 3 | 90/100 |
| ApiToll SEC EDGAR smart-money suite | x402 paid API | Yes | 3 | 90/100 |
| Arkham x402 | x402 paid API | Yes | 5 | 90/100 |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Bitrefill x402 Live x402
Buy gift cards, eSIMs, mobile top-ups and prepaid cards with USDC via x402. 10,000+ brands across 180+ countries. No API keys or Bitrefill account required — wallet payment and optional SIWX sign-in only.
x402 paid API · 8 endpoints · check 90/100 · also does on-chain data, x402 paid apis
- Laso Finance Live x402
Convert stablecoins (USDC, USDT, DAI) to spendable prepaid cards and gift cards instantly. Works with Google Pay. Multi-chain: Ethereum, Solana, Stellar, Arbitrum, Base, Polygon.
x402 paid API · 8 endpoints · check 90/100 · also does on-chain data, x402 paid apis
- x402scan Live x402
Query indexed x402 payment data and send USDC on Base and Solana.
x402 paid API · 10 endpoints · check 90/100 · also does on-chain data, x402 paid apis
- Chit402 Live x402
Signed spend receipts for agent x402 payments — who paid which call, verifiable by a third party. Treasury desk for agent spend — export, policy, evidence. Possession book for principals. POST /v1/chat/completions retur…
x402 paid API · 1 endpoint · check 89/100 · also does on-chain data, x402 paid apis
- api-staging.vapinetwork.ai Live x402
Decode what an EVM payment authorization actually authorizes before signing.
x402 paid API · 1 endpoint · also does on-chain data, x402 paid apis
- blockchain-api.x402-chain-tools.workers.dev Live x402
Check the latest or current Base Mainnet block number. Use this to get the live Base block height. (4 paid endpoints on blockchain-api.x402-chain-tools.workers.dev.)
x402 paid API · 4 endpoints · also does on-chain data, x402 paid apis
- blockchain.info Live x402
Paid AI-agent access to Blockchain.com Explorer API (55 paid endpoints on api.blockchain.info.)
x402 paid API · 12 endpoints · also does on-chain data, x402 paid apis
- Agent Economy OS 2047 — A2A Commerce Directory Live A2A
Public A2A discovery assistant for AI agents that want to discover four experimental x402 services on Base: pre-action policy checks, owner-signed spending rules and public USDC transfer receipt evidence. This directory…
A2A agent · Agent Economy OS 2047 · 5 skills · check 90/100 · also does on-chain data, x402 paid apis
- AgentBIT API Live x402
Autonomous API & AI agent tools, monetized per call via the x402 payment protocol.
x402 paid API · 12 endpoints · check 90/100 · also does on-chain data, x402 paid apis
- AgentPay Gateway Live x402
Buyer-side trust layer for x402 agents. verified_route ranks providers on paid delivery evidence and sybil-collapsed payer counts; pre_trade_check returns an ok/caution/avoid verdict before a trade; session_create opens…
x402 paid API · 3 endpoints · check 90/100 · also does on-chain data, x402 paid apis
- ApiToll SEC EDGAR smart-money suite Live x402
ApiToll runs pay-per-call data agents on x402 (USDC on Base + Solana). This suite returns normalized SEC EDGAR data by ticker or CIK — corporate filings (10-K / 10-Q / 8-K), Form 4 insider trades, and 13F-HR institution…
x402 paid API · 3 endpoints · check 90/100 · also does on-chain data, x402 paid apis
- Arkham x402 Live x402
Pay-per-request Arkham wallet intelligence and market data API protected by x402.
x402 paid API · 5 endpoints · check 90/100 · also does on-chain data, x402 paid apis