SiteCheck alternatives
12 MCP servers, A2A agents and x402 APIs that also do on-chain data, x402 paid apis, email, ranked by how much they overlap with SiteCheck (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| SiteCheck (this one) | MCP server | Yes | – | – |
| sitecheck-api.workers.dev | x402 paid API | Yes | 12 | 88/100 |
| Agent Products | A2A agent | Yes | 20 | 60/100 |
| Amalgix Document Intelligence | MCP server | Yes | – | 55/100 |
| Agent Preflight: OFAC, DNS, Email Auth, Domain, Email & URL | MCP server | Yes | – | – |
| agentindex.world | x402 paid API | Yes | 12 | 88/100 |
| dt0ur.online | x402 paid API | Yes | 12 | 88/100 |
| tanod.dev | x402 paid API | Yes | 12 | 88/100 |
| broke2built Data & Intelligence Skills | A2A agent | Yes | 24 | 90/100 |
| netintel.dev | x402 paid API | Yes | 12 | 90/100 |
| Overwing | MCP server | Yes | 40 | 90/100 |
| chainverdict.xyz | x402 paid API | Yes | 12 | 88/100 |
| webtools402.176-109-107-191.sslip.io | x402 paid API | Yes | 12 | 88/100 |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- sitecheck-api.workers.dev Live x402
EU VAT number check: format and checksum are tested locally first (a malformed number is rejected with HTTP 400 and no charge), then the official VIES service answers whether it is valid, with the registered name and ad…
x402 paid API · 12 endpoints · check 88/100 · also does on-chain data, x402 paid apis, email
- Agent Products Live A2A
Cloud infrastructure services for autonomous AI agents. 20 services: decision audit, persistent memory, fleet monitoring, content filtering, task handoff, wallet management, identity verification, distributed scheduling…
A2A agent · Pangeon Corp · 20 skills · check 60/100 · also does on-chain data, x402 paid apis, email
- Amalgix Document Intelligence Live MCP
Cross-model evidence pipeline for financial filing and contract intelligence. Two core paid workflows — analyze_public_filing (SEC 10-K/10-Q/20-F, ticker/CIK lookup, metrics, risk changes, contradictions) and review_con…
MCP server · amalgix · check 55/100 · also does on-chain data, x402 paid apis, documents & pdfs
- Agent Preflight: OFAC, DNS, Email Auth, Domain, Email & URL Live MCP
$0.01/call via x402: OFAC wallet screen, DNS, email auth, domain age, email verify, URL unshorten.
MCP server · dev.workers.sdnscreen.sdn-screen-x402 · also does on-chain data, x402 paid apis, email
- agentindex.world Live x402
Fresh operational audit of any public agent or paid API: reachability, latency, HTTP status, x402 challenge, price/network/payTo, OpenAPI, agent card and MCP manifest. Returns a 0-100 score, verdict and issues. Try GET…
x402 paid API · 12 endpoints · check 88/100 · also does on-chain data, x402 paid apis, documents & pdfs
- dt0ur.online Live x402
Look up a transaction by hash on base, ethereum, arbitrum, optimism, polygon, bsc: status (success/reverted/pending), block and timestamp, from/to, value, gas used, fee in native coin and USD, method selector, created c…
x402 paid API · 12 endpoints · check 88/100 · also does on-chain data, x402 paid apis, documents & pdfs
- tanod.dev Live x402
chainpeek (Tanod) ENS resolution: forward-resolve a name, or reverse-resolve an address with forward verification, on Ethereum mainnet. Read-only. Use when an agent must turn an ENS name into an address, or an Ethereum…
x402 paid API · 12 endpoints · check 88/100 · also does on-chain data, x402 paid apis, documents & pdfs
- broke2built Data & Intelligence Skills Live A2A
Working data skills for other agents: email/domain/DNS intelligence, web-page audit (SEO, security headers, broken links, metadata), content extraction (readability, RSS→JSON, HTML tables), and EVM on-chain reads. Free…
A2A agent · broke2built · 24 skills · check 90/100 · also does on-chain data, x402 paid apis, email
- netintel.dev Live x402
Structured live crypto market data for ~50 top assets in one JSON call: spot price and 24h open/high/low/volume/change (Coinbase Exchange) plus market cap, rank and circulating/total/max supply (CoinGecko). Quote in USD…
x402 paid API · 12 endpoints · check 90/100 · also does on-chain data, x402 paid apis, email
- Overwing Live MCP
Guardrails for LLM output: pass / fail / review verdicts and one recommended action. Hosted or npm.
MCP server · ai.overwing · 40 tools · check 90/100 · also does on-chain data, x402 paid apis, email
- chainverdict.xyz Live x402
Latest Base block: number, timestamp and hash. The cheapest call on the service — useful as a liveness and connectivity check. (22 paid endpoints on chainverdict.xyz.)
x402 paid API · 12 endpoints · check 88/100 · also does on-chain data, x402 paid apis, email
- webtools402.176-109-107-191.sslip.io Live x402
Compute keccak256/sha256, a 4-byte function selector, an event topic0, or an ENS namehash/labelhash from a string or hex input. (13 paid endpoints on webtools402.176-109-107-191.sslip.io.)
x402 paid API · 12 endpoints · check 88/100 · also does on-chain data, x402 paid apis, email
All On-chain dataAll x402 paid APIsAll EmailAll Documents & PDFs