Developer Tools

x402supply.com

Provides chess position evaluation using Stockfish and analysis of x402 payment endpoints for compliance, pricing, and reseller detection.

6 endpoints9 known toolsFirst detected July 25, 2026Last detected July 25, 2026

ENDPOINT 1

https://chess-eval.x402supply.com/mcp

No auth detected

MCP server metadata

Name: chess-eval
Version: 0.1.0

Capabilities

tools.listChanged

Known tools 2

evaluate_position

Evaluate a chess position with Stockfish: best move, centipawn/mate score, principal variation, and optional multipv.

Inferred read-only

best_line

Play out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.

Potential side effects

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.chess-eval]
url = "https://chess-eval.x402supply.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "chess-eval": {
      "type": "http",
      "url": "https://chess-eval.x402supply.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: chess-eval
Remote MCP URL: https://chess-eval.x402supply.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "chess-eval": {
      "url": "https://chess-eval.x402supply.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "chess-eval": {
      "type": "http",
      "url": "https://chess-eval.x402supply.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "chess-eval",
  "transport": "streamable-http",
  "url": "https://chess-eval.x402supply.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

ENDPOINT 2

https://diligence.x402supply.com/mcp

No auth detected

MCP server metadata

Name: endpoint-diligence
Version: 0.1.0

Capabilities

tools.listChanged

Known tools 3

check_endpoint

Runs live diligence on an x402-metered endpoint before you pay it: verifies its 402 payment challenge is spec-compliant, checks the price against market baselines, inspects the payTo address on-chain (Base), checks third-party directory presence, and checks basic infra hygiene, and detects possible upstream API resale with evidence-based markup estimates.

Potential side effects

compare_price

Compares an x402 endpoint's price (or a given price/category pair) against market percentiles from our daily radar snapshot of the x402 ecosystem.

Inferred read-only

reseller_check

Free possible-reseller preview.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.endpoint-diligence]
url = "https://diligence.x402supply.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "endpoint-diligence": {
      "type": "http",
      "url": "https://diligence.x402supply.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: endpoint-diligence
Remote MCP URL: https://diligence.x402supply.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "endpoint-diligence": {
      "url": "https://diligence.x402supply.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "endpoint-diligence": {
      "type": "http",
      "url": "https://diligence.x402supply.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "endpoint-diligence",
  "transport": "streamable-http",
  "url": "https://diligence.x402supply.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

ENDPOINT 3

https://entity-resolve.x402supply.com/mcp

No auth detected

MCP server metadata

Name: entity-resolve
Version: 0.1.0

Capabilities

tools.listChanged

Known tools 1

resolve

Fuzzy-dedupe a list of records into clusters of likely-duplicate entities.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.entity-resolve]
url = "https://entity-resolve.x402supply.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "entity-resolve": {
      "type": "http",
      "url": "https://entity-resolve.x402supply.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: entity-resolve
Remote MCP URL: https://entity-resolve.x402supply.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "entity-resolve": {
      "url": "https://entity-resolve.x402supply.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "entity-resolve": {
      "type": "http",
      "url": "https://entity-resolve.x402supply.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "entity-resolve",
  "transport": "streamable-http",
  "url": "https://entity-resolve.x402supply.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

ENDPOINT 4

https://hts-classify.x402supply.com/mcp

No auth detected

MCP server metadata

Name: hts-classify
Version: 0.1.0

Capabilities

tools.listChanged

Known tools 1

classify

Classify a product description into candidate HS/HTS10 tariff codes.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.hts-classify]
url = "https://hts-classify.x402supply.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "hts-classify": {
      "type": "http",
      "url": "https://hts-classify.x402supply.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: hts-classify
Remote MCP URL: https://hts-classify.x402supply.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "hts-classify": {
      "url": "https://hts-classify.x402supply.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "hts-classify": {
      "type": "http",
      "url": "https://hts-classify.x402supply.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "hts-classify",
  "transport": "streamable-http",
  "url": "https://hts-classify.x402supply.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

ENDPOINT 5

https://page-extract.x402supply.com/mcp

No auth detected

MCP server metadata

Name: page-extract
Version: 0.1.0

Capabilities

tools.listChanged

Known tools 1

page_extract

Fetches a URL and returns clean article text/markdown plus metadata.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.page-extract]
url = "https://page-extract.x402supply.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "page-extract": {
      "type": "http",
      "url": "https://page-extract.x402supply.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: page-extract
Remote MCP URL: https://page-extract.x402supply.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "page-extract": {
      "url": "https://page-extract.x402supply.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "page-extract": {
      "type": "http",
      "url": "https://page-extract.x402supply.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "page-extract",
  "transport": "streamable-http",
  "url": "https://page-extract.x402supply.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

ENDPOINT 6

https://pii-redact.x402supply.com/mcp

No auth detected

MCP server metadata

Name: pii-redact
Version: 0.1.0

Capabilities

tools.listChanged

Known tools 1

redact

Detect and redact PII in text or JSON.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.pii-redact]
url = "https://pii-redact.x402supply.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "pii-redact": {
      "type": "http",
      "url": "https://pii-redact.x402supply.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: pii-redact
Remote MCP URL: https://pii-redact.x402supply.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "pii-redact": {
      "url": "https://pii-redact.x402supply.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "pii-redact": {
      "type": "http",
      "url": "https://pii-redact.x402supply.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "pii-redact",
  "transport": "streamable-http",
  "url": "https://pii-redact.x402supply.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Loading Trust v2 evidence…

Checking the associated registrable domain. The BuiltWith key remains server-side.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.