shield.vainplex.dev alternatives
12 MCP servers, A2A agents and x402 APIs that also do x402 paid apis, email, ranked by how much they overlap with shield.vainplex.dev (x402 paid API), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| shield.vainplex.dev (this one) | x402 paid API | Yes | 3 | – |
| aiskills402.com | x402 paid API | Yes | 12 | – |
| forgemesh.io | x402 paid API | Yes | 12 | – |
| CheapTokens API | x402 paid API | Yes | 1 | 90/100 |
| Mekler AI | x402 paid API | Yes | 8 | 90/100 |
| Toolsmith | x402 paid API | Yes | 12 | 90/100 |
| Palmyr | MCP server | Yes | 33 | 80/100 |
| Rooms paid tools (x402) | x402 paid API | Yes | 7 | – |
| 01Mind | A2A agent | Yes | 10 | – |
| agent-reader.agent-reader.workers.dev | x402 paid API | Yes | 3 | – |
| agent-vending-production.up.railway.app | x402 paid API | Yes | 12 | – |
| agent.connskill.com | x402 paid API | Yes | 12 | – |
| agentreader.dev | x402 paid API | Yes | 8 | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- aiskills402.com Live x402
Text to JSON: Extract Data Without Guessing — Extracts data from text into JSON that matches the shape you give (a JSON Schema, an example object or a list of fields), without guessing. Every value comes from the text;…
x402 paid API · 12 endpoints · also does x402 paid apis, email
- forgemesh.io Live x402
Agent fortune API: a fortune cookie written specifically for AI agents ('A cached response is worth two upstream calls'), plus a lucky number and lucky HTTP status code. The cheapest, most delightful way to make your fi…
x402 paid API · 12 endpoints · also does x402 paid apis, email
- CheapTokens API Live x402
Machine-readable API for discovering CheapTokens pricing/supply, choosing x402 or card checkout routes, purchasing discounted Venice.ai API credits, inspecting Same-Day and Prepaid API Key status, recovering card-purcha…
x402 paid API · 1 endpoint · check 90/100 · also does x402 paid apis, email
- Mekler AI Live x402
x402 service diagnostics, annual SEC financial facts, CSV validation, citation-source comparison, web extraction and email domain checks for agents. Retrieve six annual US-GAAP USD fields by CIK with filing links, same-…
x402 paid API · 8 endpoints · check 90/100 · also does x402 paid apis, email
- Toolsmith Live x402
Keyless pay-per-call APIs for AI agents: 30 tools across compliance, trade, safety, web and data. Pay per call with USDC on Base via x402. No account, no API key.
x402 paid API · 12 endpoints · check 90/100 · also does x402 paid apis, email
- Palmyr Live MCP
Agent infra: email, phone, social, domains, VPS, wallets. Paid per-action via x402, no API key.
MCP server · ai.palmyr · 33 tools · check 80/100 · also does x402 paid apis, email
- Rooms paid tools (x402) Live x402
7 pay-per-call lookups for agents, paid with USDC on Base over x402, no account or key: x402 trust check, Rooms agent verification, Wallet snapshot, ERC-20 token facts, ENS resolve, Web page to markdown, Email address c…
x402 paid API · Rooms by Aurmada · 7 endpoints · also does x402 paid apis, email
- 01Mind Live A2A
A machine-to-machine agent superstore -- real, paid API services (data, actions, specialised knowledge) for autonomous agents, settled via x402 on Base. Paying accepts the 01Mind Terms of Sale (version 2026-09-15): http…
A2A agent · 01Mind · 10 skills · also does x402 paid apis, email
- agent-reader.agent-reader.workers.dev Live x402
DNS lookup over Cloudflare DoH: query A, AAAA, CNAME, MX, NS, TXT, SOA, SRV, CAA or PTR records for any domain and get structured JSON answers with TTLs. Useful for domain research, email validation and infrastructure c…
x402 paid API · 3 endpoints · also does x402 paid apis, email
- agent-vending-production.up.railway.app Live x402
Validate an email address using syntax, MX, disposable-domain, role-account, and domain-risk checks. Returns structured validation data for agent workflows, signup hygiene, and lead-quality checks. Does not guarantee th…
x402 paid API · 12 endpoints · also does x402 paid apis, email
- agent.connskill.com Live x402
Keyword demand check for up to 1000 chosen terms: search volume, CPC, advertising competition and available monthly history from Google Ads data. Advertising competition is not organic SEO difficulty. (22 paid endpoints…
x402 paid API · 12 endpoints · also does x402 paid apis, email
- agentreader.dev Live x402
DNS lookup over Cloudflare DoH: query A, AAAA, CNAME, MX, NS, TXT, SOA, SRV, CAA or PTR records for any domain and get structured JSON answers with TTLs. Useful for domain research, email validation and infrastructure c…
x402 paid API · 8 endpoints · also does x402 paid apis, email