Siglume MCP Gateway alternatives
12 MCP servers, A2A agents and x402 APIs that also do agent infrastructure, ranked by how much they overlap with Siglume MCP Gateway (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| Siglume MCP Gateway (this one) | MCP server | Yes | – | – |
| agent-tools (x402 + MCP + A2A directory) | MCP server | Yes | – | – |
| AgentNDX | MCP server | Yes | – | – |
| ANAMIZED Desk | MCP server | Yes | – | – |
| ComOS Federation Gateway | MCP server | Yes | – | – |
| iwant.fyi | MCP server | Yes | – | – |
| Kenwea — Sandbox Attestation & Agent Marketplace | MCP server | Yes | – | – |
| TalkToMyAgent | MCP server | Yes | – | – |
| Agent Checkup by OpenGlass | A2A agent | Yes | 1 | 90/100 |
| Agent Economy OS 2047 — A2A Commerce Directory | A2A agent | Yes | 5 | 90/100 |
| Agentropolis | A2A agent | Yes | 3 | 90/100 |
| Axiom Agentic Tools | MCP server | Yes | 9 | 90/100 |
| Creator Desk Machine Distribution | A2A agent | Yes | 2 | 90/100 |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- agent-tools (x402 + MCP + A2A directory) Live MCP
Discover x402 services, MCP servers and A2A agents by intent — agent-tools.cloud directory.
MCP server · io.github.AgentTools-Cloud · also does agent infrastructure
- AgentNDX Live MCP
Search and discover MCP servers, A2A agents, and x402-enabled services. The agentic web's directory — add `https://agentndx.ai/mcp` to your MCP client to search 59+ servers by name, category, or capability. Pay $0.005 U…
MCP server · jl-3044 · also does agent infrastructure
- ANAMIZED Desk Live MCP
Agent floor and MCP market: catalog, rack, Stripe checkout, x402, A2A.
MCP server · io.github.ANAMIZED · also does agent infrastructure
- ComOS Federation Gateway Live MCP
Multi-tenant MCP gateway for AI commerce. One connection, every store.
MCP server · com.comos-federation · also does agent infrastructure
- iwant.fyi Live MCP
Demand-side commerce for AI agents. Tell iwant.fyi what your user wants to buy and get back product matches ranked across multiple sources in a single call — category-agnostic, with the agent's structured constraints (a…
MCP server · iwantfyi · also does agent infrastructure
- Kenwea — Sandbox Attestation & Agent Marketplace Live MCP
Signed sandbox verdicts on any artifact, plus an agent marketplace. No key, no signup, no payment.
MCP server · com.kenwea.www · also does agent infrastructure
- TalkToMyAgent Live MCP
Agent-to-agent marketplace (beta): buy and list agent-delivered services for USDC on Base (x402).
MCP server · dev.talktomyagent · also does agent infrastructure
- Agent Checkup by OpenGlass Live A2A
Checks an A2A agent from the outside and tells you what to fix. Give it an agent-card URL or a domain. It fetches the agent card and validates it against the current A2A schema, sends the agent one harmless test message…
A2A agent · OpenGlass · 1 skill · check 90/100 · also does agent infrastructure
- 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 agent infrastructure
- Agentropolis Live A2A
Search engine for agent-usable tools: MCP servers, x402/MPP paid APIs, A2A agents and kits, with payment-verified trust scores and honest badges (Verified, Live-Tested, Trusted auto-computed; Agentropolis Pro is a label…
A2A agent · Agentropolis · 3 skills · check 90/100 · also does agent infrastructure
- Axiom Agentic Tools Live MCP
x402-paid Base agent tools (USDC). 5 deterministic tools. No API keys. No NFT pass.
MCP server · io.github.0xAxiom · 9 tools · check 90/100 · also does agent infrastructure
- Creator Desk Machine Distribution Live A2A
Evidence-backed x402, MCP and A2A distribution service that audits machine discovery, repairs metadata and purchase-path gaps, submits eligible listings, and verifies public read-back.
A2A agent · Creator Desk AI · 2 skills · check 90/100 · also does agent infrastructure