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.
Available components
Last scanned (1 hour ago)
Scores higher than 91% of remote servers
Reachable. Last reached 23 Oct 2026.
Category Search and Retrieval
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. How we score → Why this is hard to score →
Endpoint Security100
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- 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. View diagnostics → Pass
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
- The authorisation server supports Client ID Metadata Documents, the current MCP client-registration mechanism. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability90
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- 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. See how to fix → Fail
- Tools include usage examples.Pass
Stability & Change Management7
- Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 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. See how to fix → Fail
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
- Supports UI / widget rendering.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 23 Oct 26 +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.
- 22 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 21 Oct 26 83
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 23 Oct 2026 · Probed https://www.x402broker.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=x402broker.com | CN=YE1,O=Let's Encrypt,C=US | 19 Oct 2026 | 17 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 56cb4b4f1e5abf7eef01406e8fe5177beb6 |
| SANs: *.x402broker.com, x402broker.com | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of www.x402broker.com. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| x402broker.com. | present | 2371 | 13 | Verified |
| www.x402broker.com. | Verified address RRset verified with the apex keys |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 200 |
WWW-Authenticate challenge Bearer resource_metadata="https://www.x402broker.com/.well-known/oauth-protected-resource"
Bearer resource_metadata="https://www.x402broker.com/.well-known/oauth-protected-resource" | Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
Protected resource metadata
| Document | https://www.x402broker.com/.well-known/oauth-protected-resource |
|---|---|
| Retrieved | Yes |
| Resource | https://www.x402broker.com |
| Authorisation server | https://www.x402broker.com |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://www.x402broker.com/mcp | Verified | 200 | |
| http (plaintext) | http://www.x402broker.com/mcp | HTTPS enforced | 301 | https://www.x402broker.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
execute_marketplace_tool ~455
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')
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | Primary input parameter for the target tool (URL, 0x address, ticker, domain, email, repo, or query). |
| target_tool | string | yes | 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. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | – | Structured tool output payload. |
| roi_proof | object | – | Token compression and cost-savings verification metrics. |
| status | string | yes | Execution status ('ok' or 'payment_required'). |
{"target_tool":"example"} execute_workflow_bundle ~403
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')
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | 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. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | – | Structured tool output payload. |
| roi_proof | object | – | Token compression and cost-savings verification metrics. |
| status | string | yes | Execution status ('ok' or 'payment_required'). |
{"bundle_id":"example"} get_agent_wallet_status ~205
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')
| Name | Type | Req | Description |
|---|---|---|---|
| agent_id | string | – | Optional Agent ID or agd_pass_ session key to inspect. Omit to check the default wallet derived from your client IP. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | – | Structured tool output payload. |
| roi_proof | object | – | Token compression and cost-savings verification metrics. |
| status | string | yes | Execution status ('ok' or 'payment_required'). |
{"agent_id":"example"} search_x402_mcp_marketplace ~268
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')
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | 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. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | – | Structured tool output payload. |
| roi_proof | object | – | Token compression and cost-savings verification metrics. |
| status | string | yes | Execution status ('ok' or 'payment_required'). |
{"query":"example"} 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.
remote · www.x402broker.com
claude mcp add --transport http com-x402broker-marketplace 'https://www.x402broker.com/mcp'
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.