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Asn1 MCP Server

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answering

Asn1 MCP is answering right now. Last checked 8 min ago. It exposes 1 tools.

Compiles ASN.1 schema definitions into executable source code like Python and Rust.

Uptime history 7 days of history · worst day 99%
7 days agonow
100.0%
Uptime 24h
91 of 91 checks
1
Tools
read from the server
504 ms
Response time
average over 24h
open, no key
Access
streamable-http

Asn1 MCP missed one check this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

run in your terminal
claude mcp add asn1-mcp --transport http https://asn1.io/mcp
Settings → Connectors → Add custom connector, then paste this address
https://asn1.io/mcp
~/.codex/config.toml
[mcp_servers.asn1-mcp]
url = "https://asn1.io/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "asn1-mcp": {
      "url": "https://asn1.io/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "asn1-mcp": {
      "type": "http",
      "url": "https://asn1.io/mcp"
    }
  }
}

Available tools 1

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

compile
compile_asn1_schema
Compiles ASN.1 schema definitions into executable source code. Use this tool whenever a user asks to generate code, compile an ASN.1 schema, or create a codec (e.g., DER, PER, UPER, BER) for a specific programming language. The tool returns the compilation status, error messages, and files containing the generated source code.

Endpoints

URLTransportStateLatencyChecked
https://asn1.io/mcp streamable-http answering 997 ms 8 min ago

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Asn1 MCP — questions

Answers built from our own checks of this server.

What can Asn1 MCP do?
It exposes 1 tools, read directly from the server on our last check. Among them: compile_asn1_schema. 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 Asn1 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 504 ms. The bar chart above shows every period we have measured.
How do I connect Asn1 MCP?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Asn1 MCP need an API key?
No. Asn1 MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Asn1 MCP?
It answers our handshake in 504 ms on average, which is faster than 24% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.