Nanotoll MCP Server

by nanotoll Your server? Claim it

answering

Nanotoll MCP is answering right now. Last checked 14 min ago. It exposes 8 tools.

7 agent tools (prune, convert, estimate, diff, patch, generate, validate). USDC on Base L2.

Uptime history 29 days of history · worst day 0%

29 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

187 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 16

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 29 August 2026. No other catalogue keeps this.

31 Aug a tool appeared read

31 Aug a tool changed the parameters it asks for prune

29 Aug 7 tool descriptions were rewritten9 times that day convert, diff, estimate and 4 more

29 Aug 5 tools changed the parameters they ask for convert, diff, estimate and 2 more

and 2 more, back to 29 August 2026

Nothing serious here today

Today is the operative word: we check Nanotoll MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add nanotoll-mcp --transport http https://mcp.nanotoll.dev/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "nanotoll-mcp": {
      "url": "https://mcp.nanotoll.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.nanotoll-mcp]
url = "https://mcp.nanotoll.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "nanotoll-mcp": {
      "url": "https://mcp.nanotoll.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "nanotoll-mcp": {
      "url": "https://mcp.nanotoll.dev/mcp"
    }
  }
}

Available tools 8

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

convert

convert

Transform text between JSON, YAML, TOML, and CSV formats. Returns the converted text and input/output character metrics. Note some conversions can be lossy (e.g. JSON to CSV flattens nested structures). Requires a valid API key (Bearer token); billing is per input character — insufficient balance returns HTTP 402. For removing comments use `prune`, for generating llms.txt use `generate`.

diff

diff

Generate a unified diff between two text versions (the before and after). Returns the diff text plus metrics (lines added, lines removed, output chars). Requires a valid API key (Bearer token); billing is per combined input characters. To apply a diff, use `patch`.

estimate

estimate

Estimate the USD cost of an LLM API call using the CWEP four-flow model (request generation, request processing, response generation, response reception). Returns a JSON object with the per-flow cost breakdown, the total, and the pricing source date. Unknown model names return HTTP 422 — check GET /api/v1/pricing on costa.nanotoll.dev for the supported list (no auth needed). Requires a valid API key (Bearer token); billing is per input character.

generate

generate

Generate an llms.txt agent-discovery file from structured service metadata (name, endpoints, overview, links, pricing). Returns the llms.txt content and output metrics. Requires a valid API key (Bearer token); billing is per input character. To check an existing llms.txt for spec compliance, use `validate`.

patch

patch

Apply a unified diff patch to text, producing the transformed output. Returns the patched text. Requires a valid API key (Bearer token); billing is per combined input characters. To generate a diff, use `diff`.

prune

prune

Strip comments and empty lines from text to reduce token count before sending to an LLM. Returns the pruned text and character metrics. Requires a valid API key (Bearer token); billing is per input character — insufficient balance returns HTTP 402. For format conversion use `convert`, for generating llms.txt use `generate`.

read

read

Fetch a web page and return clean GitHub-flavored markdown at a strict token budget. DOM-density scoring strips boilerplate (CSS, JS, navbars, tracking) — raw HTML averages 80-95% noise. Requires a valid API key (Bearer token); billing is $0.0005 flat per read — insufficient balance returns HTTP 402. Fetch failures return HTTP 422 and are refunded.

validate

validate

Validate an llms.txt payload for spec compliance (H1 title, endpoints section, pricing section, structure). Returns a validation report with errors, warnings, and structural flags. Requires a valid API key (Bearer token); billing is per input character. To generate new llms.txt, use `generate`.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.nanotoll.dev/mcp	streamable-http	answering	178 ms	14 min ago

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Nanotoll MCP — questions

Answers built from our own checks of this server.

What can Nanotoll MCP do?

It exposes 8 tools, read directly from the server on our last check. Among them: convert, diff, estimate, generate, patch, prune and 2 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Nanotoll MCP working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 187 ms. The bar chart above shows every period we have measured.

How do I connect Nanotoll MCP?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Nanotoll MCP need an API key?

No. Nanotoll MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 8 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Nanotoll MCP?

It answers our handshake in 187 ms on average, which is faster than 69% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.