CaliberAPI Pistol Optic Fit MCP Server

by caliberapi Your server? Claim it

answering

CaliberAPI Pistol Optic Fit is answering right now. Last checked 8 min ago. It exposes 5 tools.

Source-cited pistol red dot compatibility: direct fits, adapter plates and optic footprints.

Uptime history 16 days of history

16 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

212 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check CaliberAPI Pistol Optic Fit 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 8 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add pistol-optics --transport http https://mcp.caliberapi.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://mcp.caliberapi.com/mcp

~/.codex/config.toml

[mcp_servers.pistol-optics]
url = "https://mcp.caliberapi.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "pistol-optics": {
      "url": "https://mcp.caliberapi.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "pistol-optics": {
      "type": "http",
      "url": "https://mcp.caliberapi.com/mcp"
    }
  }
}

Available tools 5

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

fit

check_fit

Answer whether a specific red dot optic fits a specific pistol, from source-cited data. Returns fit "direct" (mounts on the slide cut, with the footprint), "adapter" (only through the adapter plate chain in via, with plate maker, model, mount and presented footprints, and plate sources), or "unknown" (no cited fit in the dataset, which is not evidence it does not fit). Returns "needs_clarification" with candidates when a name is ambiguous; call again with a candidate slug. Report the answer exactly as returned: never call an adapter fit a direct fit, and never turn "unknown" into "does not fit". Cite with the returned citation line and link html_url.

footprint

get_footprint

Describe one optic mounting footprint or plate system (for example RMR, RMSc, ACRO, DPP, Glock MOS): screw and recoil lug counts, the optics that use it, the pistols cut for it directly, and the adapter plates that mount or present it, with sources.

optics

list_optics_for_pistol

List every optic with a cited fit on one pistol, each marked direct (with footprint) or adapter (with the plate chain in via). Use it for questions like "what red dots fit my pistol". Optics not listed have no cited fit, which is not evidence they do not fit. Report the answer exactly as returned: never call an adapter fit a direct fit, and never turn "unknown" into "does not fit". Cite with the returned citation line and link html_url.

pistols

list_pistols_for_optic

List every pistol with a cited fit for one optic, each marked direct (with footprint) or adapter (with the plate chain in via). Use it for questions like "what pistols take this red dot". Report the answer exactly as returned: never call an adapter fit a direct fit, and never turn "unknown" into "does not fit". Cite with the returned citation line and link html_url.

search

Find pistols, optics and footprints by name. Returns slugs, names and page URLs to pass to the other tools. Use it when you are unsure of an exact model name.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.caliberapi.com/mcp	streamable-http	answering	234 ms	8 min ago

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CaliberAPI Pistol Optic Fit — questions

Answers built from our own checks of this server.

What can CaliberAPI Pistol Optic Fit do?

It exposes 5 tools, read directly from the server on our last check. Among them: check_fit, get_footprint, list_optics_for_pistol, list_pistols_for_optic, search. 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 CaliberAPI Pistol Optic Fit 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 212 ms. The bar chart above shows every period we have measured.

How do I connect CaliberAPI Pistol Optic Fit?

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 CaliberAPI Pistol Optic Fit need an API key?

No. CaliberAPI Pistol Optic Fit completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is CaliberAPI Pistol Optic Fit?

It answers our handshake in 212 ms on average, which is faster than 63% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.