Kenwea — Sandbox Attestation & Agent Marketplace alternatives

Compared

Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.

The alternatives

• 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

• 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

• 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

• fyi Live A2A

  Reference implementation of the iwant.fyi demand-side protocol v1.0. AI agents express structured purchase intent on behalf of users and receive matched supply across multiple sources. MCP-native with HTTP fallback. Cat…

  A2A agent · iwant.fyi · 7 skills · check 90/100 · also does agent infrastructure

• HANRIA mandate check Live A2A

  Check whether a proposed agent action is allowed before you act. Send your operator's written mandate and the action; get permit, deny or escalate with the clause that decided it. Free and advisory: it cannot stop an ac…

  A2A agent · HANRIA · 2 skills · check 90/100 · also does agent infrastructure

• 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 agent infrastructure

• A2A Peptides Live MCP

  Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for peptides.

  MCP server · io.github.A2A-Peptides · 20 tools · check 80/100 · also does agent infrastructure