# X402-Broker Global B2A & A2A Tool Marketplace (remote · www.x402broker.com)

Autonomous agent clearinghouse indexing 23,000+ MCP, A2A, x402 & MPP tools with instant execution.

- Trust score: 84/100 (high trust)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-23

## Components

- remote · `www.x402broker.com`: 84/100 (this document), [markdown](https://verifymcp.io/servers/com-x402broker-marketplace/www.md), [page](https://verifymcp.io/servers/com-x402broker-marketplace/www)

## Channel facts

- Endpoint: `https://www.x402broker.com/mcp`
- Transports: `streamable-http`
- Auth: `required`
- Version: `7.0.16`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-23.

- **Endpoint Security**: 100/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
  - The authorisation server supports Client ID Metadata Documents, the current MCP client-registration mechanism.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 90/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1761 tokens (~125/item across 14 items; 4 tools + 10 resources), over budget; trim descriptions and params.
  - Tools include usage examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 75/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - 0 of 2 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "execute_marketplace_tool" implies "execute" and declares readOnlyHint instead, contradicting what its own name says it does.
  - An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).
  - Supports UI / widget rendering.

## Install

### How do I install the X402-Broker Global B2A & A2A Tool Marketplace MCP server?

X402-Broker Global B2A & A2A Tool Marketplace is a hosted endpoint at https://www.x402broker.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-x402broker-marketplace 'https://www.x402broker.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-x402broker-marketplace": {
      "url": "https://www.x402broker.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-x402broker-marketplace": {
      "type": "http",
      "url": "https://www.x402broker.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-x402broker-marketplace]
url = "https://www.x402broker.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-x402broker-marketplace": {
      "type": "remote",
      "url": "https://www.x402broker.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-x402broker-marketplace --url 'https://www.x402broker.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-x402broker-marketplace:
    url: "https://www.x402broker.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-x402broker-marketplace": {
      "Transport": "http",
      "Url": "https://www.x402broker.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-x402broker-marketplace -t streamable-http -u 'https://www.x402broker.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-x402broker-marketplace": {
      "type": "http",
      "url": "https://www.x402broker.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-23 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-22 (score 83, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-21 (score 83)

First indexed and scored.

## MCP tools (4)

### `search_x402_mcp_marketplace` (~268 tokens)

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')

Input parameters:

- `agent_id` (string): Optional agent identifier or prepaid agd_pass_ session key. Omit during your 5 free trial calls to use an ID automatically derived from your client IP, or pass your agd_pass_ key after topping up.
- `query` (string, required): Capability keywords, category name, or endpoint URL to search across the 490+ tool catalog.
- `tx_hash` (string): Optional on-chain Base Mainnet (0x...) or Solana SPL USDC transaction hash. Omit unless settling an individual call directly on-chain instead of using an agd_pass_ key in agent_id.

Output parameters:

- `data` (object): Structured tool output payload.
- `roi_proof` (object): Token compression and cost-savings verification metrics.
- `status` (string): Execution status ('ok' or 'payment_required').

### `execute_marketplace_tool` (~455 tokens)

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')

Input parameters:

- `agent_id` (string): Optional agent identifier or prepaid agd_pass_ session key. Omit during your 5 free trial calls to use an ID automatically derived from your client IP, or pass your agd_pass_ key after topping up.
- `input_value` (string, required): Primary input parameter for the target tool (URL, 0x address, ticker, domain, email, repo, or query).
- `target_tool` (string, required): Native tool slug (e.g. 'distill', 'token-intel', 'sec-intel', 'github-audit') or external https:// endpoint URL.
- `tx_hash` (string): Optional on-chain Base Mainnet (0x...) or Solana SPL USDC transaction hash. Omit unless settling an individual call directly on-chain instead of using an agd_pass_ key in agent_id.

Output parameters:

- `data` (object): Structured tool output payload.
- `roi_proof` (object): Token compression and cost-savings verification metrics.
- `status` (string): Execution status ('ok' or 'payment_required').

### `execute_workflow_bundle` (~403 tokens)

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')

Input parameters:

- `agent_id` (string): Optional agent identifier or prepaid agd_pass_ session key. Omit during your 5 free trial calls to use an ID automatically derived from your client IP, or pass your agd_pass_ key after topping up.
- `bundle_id` (string, required): Composite 4-tool workflow bundle identifier to execute in parallel.
- `target` (string): Primary target entity for the bundle (0x contract, token symbol, company domain, GitHub repo, or URL).
- `tx_hash` (string): Optional on-chain Base Mainnet (0x...) or Solana SPL USDC transaction hash. Omit unless settling an individual call directly on-chain instead of using an agd_pass_ key in agent_id.

Output parameters:

- `data` (object): Structured tool output payload.
- `roi_proof` (object): Token compression and cost-savings verification metrics.
- `status` (string): Execution status ('ok' or 'payment_required').

### `get_agent_wallet_status` (~205 tokens)

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')

Input parameters:

- `agent_id` (string): Optional Agent ID or agd_pass_ session key to inspect. Omit to check the default wallet derived from your client IP.

Output parameters:

- `data` (object): Structured tool output payload.
- `roi_proof` (object): Token compression and cost-savings verification metrics.
- `status` (string): Execution status ('ok' or 'payment_required').

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-x402broker-marketplace/www#diagnostics

## Score history

- 2026-10-23: 84
- 2026-10-22: 83
- 2026-10-21: 83

## Common questions

### What is the X402-Broker Global B2A & A2A Tool Marketplace MCP server?

X402-Broker Global B2A & A2A Tool Marketplace is an MCP server listed in the public MCP registry as com.x402broker/marketplace. Autonomous agent clearinghouse indexing 23,000+ MCP, A2A, x402 & MPP tools with instant execution. This page covers its hosted endpoint (https://www.x402broker.com/mcp).

### Is the X402-Broker Global B2A & A2A Tool Marketplace MCP server safe to use?

X402-Broker Global B2A & A2A Tool Marketplace scores 84 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the X402-Broker Global B2A & A2A Tool Marketplace MCP server expose?

X402-Broker Global B2A & A2A Tool Marketplace exposes 4 tools: search_x402_mcp_marketplace, execute_marketplace_tool, execute_workflow_bundle, get_agent_wallet_status. Their descriptions and schemas cost roughly 1,331 tokens of context every time the server is loaded.

### Does the X402-Broker Global B2A & A2A Tool Marketplace MCP server require authentication?

Yes. X402-Broker Global B2A & A2A Tool Marketplace asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

### Is the X402-Broker Global B2A & A2A Tool Marketplace MCP server still maintained?

X402-Broker Global B2A & A2A Tool Marketplace is still listed as active in the MCP registry. We last reached this channel on 23 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://www.x402broker.com/mcp
- Website: https://x402broker.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-x402broker-marketplace/www.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-x402broker-marketplace/www.json
- HTML version of this page: https://verifymcp.io/servers/com-x402broker-marketplace/www