General Tools

fatstack.net

A simple MCP server that provides an echo_json tool to return the input JSON unchanged.

1 endpoint17 known toolsFirst detected September 6, 2026Last detected September 15, 2026

ENDPOINT 1

https://www.fatstack.net/api/mcp

No auth detected

MCP server metadata

Name: fatstack
Version: 1.0.0

Capabilities

tools

Server instructions

Every tool here is paid per call in USDC. Calling one returns HTTP 402 with the provider’s price and payee; pay it and retry with an X-PAYMENT header. Payments are final and cannot be refunded. Fatstack relays these calls and never receives the funds.

Known tools 17

echo__echo_json

$0.

Inferred read-only

json-schema-validate__json_schema_validate

$0.

Inferred read-only

html-to-markdown__html_to_markdown

$0.

Inferred read-only

url-metadata__url_metadata

$0.

Inferred read-only

csv-to-json__csv_to_json

$0.

Inferred read-only

text-language-detect__text_language_detect

$0.

Inferred read-only

regex-test__regex_test

$0.

Inferred read-only

unit-convert__unit_convert

$0.

Inferred read-only

cron-explain__cron_explain

$0.

Inferred read-only

uuid-batch__uuid_batch

$0.

Inferred read-only

markdown-lint__markdown_lint

$0.

Inferred read-only

askzephy-solana-audit__sol_audit

$0.

Inferred read-only

askzephy-solana-audit__sol_quick_scan

$0.

Inferred read-only

askzephy-solana-audit__google_news_feed

$0.

Inferred read-only

askzephy-quick-scan__sol_audit

$0.

Inferred read-only

askzephy-quick-scan__sol_quick_scan

$0.

Inferred read-only

askzephy-quick-scan__google_news_feed

$0.

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.fatstack]
url = "https://www.fatstack.net/api/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "fatstack": {
      "type": "http",
      "url": "https://www.fatstack.net/api/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: fatstack
Remote MCP URL: https://www.fatstack.net/api/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": {
    "fatstack": {
      "url": "https://www.fatstack.net/api/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "fatstack": {
      "type": "http",
      "url": "https://www.fatstack.net/api/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "fatstack",
  "transport": "streamable-http",
  "url": "https://www.fatstack.net/api/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.