Fatstack is a remote MCP server that gives an AI agent 14 tools, among them askzephy-quick-scan__sol_audit, askzephy-quick-scan__sol_quick_scan, cron-explain__cron_explain. It answers at https://www.fatstack.net/api/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 4 of 4 times since 14 September 2026; the last check, on 18 October 2026, succeeded.
Paid MCP tools behind one endpoint. Agents pay per call in USDC on Base via x402.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
askzephy-quick-scan__sol_audit | $0.005000 USDC per call on eip155:8453, paid directly to the provider (0xf4729bec220090ef08c786e9142898354178771e). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: repo, ref |
askzephy-quick-scan__sol_quick_scan | $0.005000 USDC per call on eip155:8453, paid directly to the provider (0xf4729bec220090ef08c786e9142898354178771e). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: repo, ref |
cron-explain__cron_explain | $0.000500 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: expression, verbose, dayOfWeekStartIndexZero |
csv-to-json__csv_to_json | $0.001000 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: csv, header, delimiter, dynamicTyping |
echo__echo_json | $0.001000 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: payload |
fatstack__free_demo | **FREE DEMO — $0.00, no wallet, no payment.** First-party tool served by Fatstack itself, not a marketplace listing. Call it to confirm your MCP client is wired up correctly. Every other tool here is a paid listing: calling one returns HTTP Inputs: message |
html-to-markdown__html_to_markdown | $0.001000 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: html, headingStyle, bulletMarker |
json-schema-validate__json_schema_validate | $0.001000 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: schema, data, draft |
markdown-lint__markdown_lint | $0.001000 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: markdown, maxLineLength |
regex-test__regex_test | $0.000500 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: pattern, flags, text, limit |
text-language-detect__text_language_detect | $0.000500 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: text, minLength, topN |
unit-convert__unit_convert | $0.000500 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: value, from, to, precision |
url-metadata__url_metadata | $0.010000 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: url |
uuid-batch__uuid_batch | $0.000500 USDC per call on eip155:8453, paid directly to the provider (0x69ad5fb5de6dcdbd8a025374ab7bb23996a69fd9). Payments are final. Once settled on-chain the transfer cannot be reversed, and there are no refunds.Calling this tool return Inputs: count, format, uppercase |
Every block below points at https://www.fatstack.net/api/mcp. Pick your client and copy.
claude mcp add --transport http fatstack https://www.fatstack.net/api/mcp
{
"mcpServers": {
"fatstack": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://www.fatstack.net/api/mcp"]
}
}
}{
"mcpServers": {
"fatstack": {
"url": "https://www.fatstack.net/api/mcp"
}
}
}{
"servers": {
"fatstack": {
"type": "http",
"url": "https://www.fatstack.net/api/mcp"
}
}
}{
"context_servers": {
"fatstack": {
"url": "https://www.fatstack.net/api/mcp"
}
}
}{
"mcpServers": {
"fatstack": {
"serverUrl": "https://www.fatstack.net/api/mcp"
}
}
}{
"mcpServers": {
"fatstack": {
"url": "https://www.fatstack.net/api/mcp"
}
}
}name: Fatstack
version: 0.0.1
schema: v1
mcpServers:
- name: Fatstack
type: streamable-http
url: https://www.fatstack.net/api/mcp{
"mcpServers": {
"fatstack": {
"httpUrl": "https://www.fatstack.net/api/mcp"
}
}
}{
"mcpServers": {
"fatstack": {
"type": "http",
"url": "https://www.fatstack.net/api/mcp"
}
}
}{
"mcpServers": {
"fatstack": {
"url": "https://www.fatstack.net/api/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fwww.fatstack.net%2Fapi%2Fmcp&type=streamable_http&id=fatstack&name=Fatstack
It answered our last check on 18 October 2026 in 241 ms. Over 4 checks since 14 September 2026 it answered 4. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by fatstack.net and served from www.fatstack.net, the vendor's own domain: https://www.fatstack.net/api/mcp.
14, as returned by the server's own tools/list on 24 September 2026: askzephy-quick-scan__sol_audit, askzephy-quick-scan__sol_quick_scan, cron-explain__cron_explain, csv-to-json__csv_to_json, echo__echo_json, fatstack__free_demo, html-to-markdown__html_to_markdown, json-schema-validate__json_schema_validate, and 6 more.
It answered our last check on 18 October 2026 in 241 ms. Over 4 checks since 14 September 2026 it answered 4.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://www.fatstack.net/api/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: net.fatstack. Endpoint host: www.fatstack.net. ARD identifier: urn:air:net.fatstack:mcp:registry.
First indexed 14 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.