X402-Broker Global A2A, MCP & x402 Super-Marketplace

com.x402brokerPublished by x402broker.comOfficial publisherv7.0.17Updated Oct 26, 2026

1,400+ tool A2A, MCP & x402 clearinghouse with free semantic discovery and paid execution.

VerifiedStreamable HTTPWeb executableDeveloper ToolsBusiness & CommerceAI & ML

Overview

AI-generated overview

Remote marketplace MCP server that lets an assistant search 490+ indexed MCP and x402 tools, run them for a per-call fee, and check its prepaid balance.

What you can do
  • Search the indexed MCP and x402 marketplace by capability keyword and get ranked endpoints with pricing, trust scores and SLA tiers
  • Run a single native tool by slug or proxy an external marketplace tool URL for a per-call fee
  • Run a 4-tool native workflow bundle in parallel and get one combined dossier
  • Inspect the agent account ledger: free trial calls left, prepaid USD balance, cumulative spend, API calls and tokens saved
When to use it
Useful when an assistant should discover and pay for third-party tools on demand instead of installing each one, for example multi-source due diligence on a token, domain, repository or research topic, or checking balance before a batch of paid calls.
Requirements
A remote streamable HTTP endpoint; no local package, environment variables or headers are declared. Paid execution requires an agent account with prepaid USD balance or free trial calls, topped up via Stripe or USDC.
Before you install
Tool execution spends real money per call (roughly $0.001-$0.02, bundles $0.015-$0.03) from a prepaid balance, so check the ledger first. Proxied external tool URLs and bundled tools send your task data to third-party endpoints. The README describes a separate observatory service rather than this marketplace, so verify what is actually executed before paying.

Installation

In SourceWeft

  1. Open X402-Broker Global A2A, MCP & x402 Super-Marketplace in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.x402broker%2Fx402-broker/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "x402-broker-global-a2a-x402-super-market": {
      "type": "http",
      "url": "https://x402broker.com/mcp"
    }
  }
}

README

Assay — A2A & MCP Provider Assurance Observatory

[Assay Badge]

Live Observatory: https://assay-207908449630.us-central1.run.app

Assay continuously probes remote MCP, A2A, and x402 endpoints to verify liveness, pin canonical SHA-256 tools/list schema hashes (detecting silent MCP Rug Pulls), and scan for prompt-injection tool poisoning before your agent pays or executes a tool.

MCP Endpoint

  • Streamable HTTP MCP: https://assay-207908449630.us-central1.run.app/mcp
  • Pre-Flight REST API: POST https://assay-207908449630.us-central1.run.app/v1/preflight
  • Live Leaderboard: GET https://assay-207908449630.us-central1.run.app/v1/leaderboard

Source: README.md at commit fd42696

Tools

4

search_x402_mcp_marketplace

Search x402 mcp marketplace

Search 490+ indexed MCP and HTTP 402 (x402) tools by capability keyword and return ranked endpoints with pricing, trust scores, and SLA tiers. WHEN TO USE: Call first to discover which native slug or external endpoint matches your task before calling execute_marketplace_tool. WHEN NOT TO USE: Do not use to execute a tool directly (use execute_marketplace_tool or execute_workflow_bundle). PARAMETER INTERACTIONS: Pass capability keywords or a domain in query; omit agent_id and tx_hash (this discovery tool is always free and never consumes a free trial call). Example: search_x402_mcp_marketplace(query='example')

Parametersqueryrequiredtx_hashagent_id

execute_marketplace_tool

Execute marketplace tool

Execute any of the 16 native AgentDiet B2A tools by slug or proxy an external marketplace tool URL ($0.001-$0.02 per call). WHEN TO USE: Call to run a single tool discovered via search_x402_mcp_marketplace; use execute_workflow_bundle when you want to run a 4-tool composite bundle in parallel. WHEN NOT TO USE: Do not use for catalog search (use search_x402_mcp_marketplace) or wallet checks (use get_agent_wallet_status). PARAMETER INTERACTIONS: Set target_tool to a native slug (e.g. 'distill', 'token-intel', 'sec-intel', 'github-audit') or external https:// URL, and pass its primary input in input_value. Omit agent_id and tx_hash during your 5 free calls. Read-only and idempotent; results are cached for 1 hour (<5ms cache hit). Pricing: the first 5 calls per agent_id are free and failed calls are never charged. After 5 calls, the tool returns a payment-required quote (not a fatal error) with a $2 Stripe top-up link and Base/Solana USDC addresses; complete payment, then retry with your agd_pass_ key in agent_id or pass tx_hash. Example: execute_marketplace_tool(target_tool='example')

Parameterstx_hashagent_idinput_valuerequiredtarget_toolrequired

execute_workflow_bundle

Execute workflow bundle

Execute a 4-tool native workflow bundle in parallel in a single call ($0.015-$0.03) and return a unified dossier, saving 3 LLM round-trips. WHEN TO USE: Call for comprehensive multi-source due diligence on a token, company domain, repository, or research topic; use execute_marketplace_tool when you only need a single tool. WHEN NOT TO USE: Do not use for single-endpoint queries or free catalog search. PARAMETER INTERACTIONS: Select bundle_id first and provide the matching entity identifier (token/0x address, domain, repo, or URL) in target. Omit agent_id and tx_hash during your 5 free calls. Read-only and idempotent; results are cached for 1 hour (<5ms cache hit). Pricing: the first 5 calls per agent_id are free and failed calls are never charged. After 5 calls, the tool returns a payment-required quote (not a fatal error) with a $2 Stripe top-up link and Base/Solana USDC addresses; complete payment, then retry with your agd_pass_ key in agent_id or pass tx_hash. Example: execute_workflow_bundle(bundle_id='example')

Parameterstargettx_hashagent_idbundle_idrequired

get_agent_wallet_status

Get agent wallet status

Inspect an agent's account ledger: remaining free trial calls (out of 5), prepaid USD balance, cumulative spend, total API calls, and total LLM tokens saved. WHEN TO USE: Call before a batch of paid tool executions or after completing a Stripe or USDC top-up to confirm your balance. WHEN NOT TO USE: Do not use to process web content, execute marketplace tools, or submit payments; use the other tools on this server for execution. PARAMETER INTERACTIONS: Omit agent_id to inspect the default trial account derived from your client IP, or pass your explicit agent_id or agd_pass_ session key to check a specific funded wallet. Free and read-only: never charges a fee or consumes a free trial call. Example: get_agent_wallet_status(agent_id='example')

Parametersagent_id

Version history

2
  1. v7.0.17LatestOct 21, 2026
  2. v7.0.15Oct 19, 2026

Score

100% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

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