Sirenic alternatives
12 MCP servers, A2A agents and x402 APIs that also do x402 paid apis, ranked by how much they overlap with Sirenic (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| Sirenic (this one) | MCP server | Yes | – | – |
| Palmyr | MCP server | Yes | 33 | 80/100 |
| SentEdge Idea Machine | MCP server | Yes | 7 | 80/100 |
| x711io - universal gas station market and intelligence | MCP server | Yes | – | 55/100 |
| aaaa-nexus — Formally Verified AI Safety APIs | MCP server | Yes | – | – |
| Adam Hale Tools: Web Research and Open Data | MCP server | Yes | – | – |
| Address Validator | MCP server | Yes | – | – |
| Agent Bazaar | MCP server | Yes | – | – |
| Agent Commerce Readiness | MCP server | Yes | – | – |
| Agent Decision & Evidence Tools (MCP + x402) | MCP server | Yes | – | – |
| Agent Discovery Board by SarnAI | MCP server | Yes | – | – |
| Agent Revenue Network | MCP server | Yes | – | – |
| Agent Tool Finder | MCP server | Yes | – | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- 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
- SentEdge Idea Machine Live MCP
Buy adversarially-debated AI product ideas over x402: $0.10 pulls, $1 buyouts, USDC on Base.
MCP server · ai.sentedge · 7 tools · check 80/100 · also does x402 paid apis
- x711io - universal gas station market and intelligence Live MCP
Pay-per-call tool API for autonomous agents. x402 payments on Base. 27 tools including web search, price feeds, and The Hive shared memory layer.
MCP server · ramboweb3 · check 55/100 · also does x402 paid apis
- aaaa-nexus — Formally Verified AI Safety APIs Live MCP
Formally verified AI safety APIs. Pay-per-call via USDC (x402). 75+ endpoints, no signup.
MCP server · io.github.atomadictech · also does x402 paid apis
- Adam Hale Tools: Web Research and Open Data Live MCP
Free web lookups; PDF to Markdown, audio transcripts, screenshots, WHOIS/DNS paid per call via x402.
MCP server · dev.workers.adamhaleworks.tools · also does x402 paid apis
- Address Validator Live MCP
Valide une adresse de livraison : normalisation, geocodage, score de livrabilite. x402.
MCP server · io.github.Kder974 · also does x402 paid apis
- Agent Bazaar Live MCP
Open, permissionless discovery marketplace for x402-payable resources. No account or KYC required.
MCP server · io.github.SaylorInnovations · also does x402 paid apis
- Agent Commerce Readiness Live MCP
Read-only agent-commerce audit, upgrade verification, diagnosis and x402 probing.
MCP server · io.github.TAMA-FIT · also does x402 paid apis
- Agent Decision & Evidence Tools (MCP + x402) Live MCP
40 MCP tools: multi-chain RPC, market and transaction decisions, AI, EU compliance and US imports
MCP server · io.github.PatrickPi1312 · also does x402 paid apis
- Agent Discovery Board by SarnAI Live MCP
Free directory to find AI agents: search MCP servers and x402 services, then connect, pay, verify.
MCP server · dev.sarnai · also does x402 paid apis
- Agent Revenue Network Live MCP
Translation, data quality, execution verification and agent utilities over MCP + x402 USDC on Base.
MCP server · com.agentrevenuenetwork · also does x402 paid apis
- Agent Tool Finder Live MCP
Free search over ~50k agent tools: paid x402 APIs and MCP servers. Price, networks, how to call.
MCP server · ai.subpay · also does x402 paid apis