Dev tools · Official remote MCP server

The Oeis MCP Server MCP server,
connected in one click.

Identify integer sequences by terms, search the OEIS, read formulas, programs, b-files, cross-refs. Connect the official Oeis MCP Server MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.

Connect Oeis MCP Server free How it works

Free to start · No credit card · No hosting needed

Use this server

Add Oeis MCP Server to your AI in one minute

Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.

claude mcp add --transport http oeis-mcp-server https://oeis.caseyjhand.com/mcp

Run in your terminal, then restart Claude Code.

Oeis MCP Server · https://oeis.caseyjhand.com/mcp

What you can do

What your AI can do with Oeis MCP Server

Real prompts you can type the moment it's connected — no setup, no docs to read.

“Use “oeis_identify_sequence”: Identify integer sequences that contain a run of consecutive terms, e.g. "1, 2, 5, 14, 42". Returns up to 10 matches per page in OEIS releva.”

“Use “oeis_search_sequences”: Search the OEIS using its query syntax: plain words, "quoted phrases", comma-separated terms, prefixes (keyword:, author:, name:, comment:,.”

“Use “oeis_get_sequence”: Fetch one OEIS entry by A-number. Returns the name, data-line terms, offset, keywords, author, dates, and the sections: comments, formulas (.”

“Use “oeis_get_terms”: List terms a(n) of a sequence with their indices n. Reads the entry's b-file when it has one — often thousands of terms beyond the data line.”

Security check

How secure is the Oeis MCP Server MCP server?

Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Oeis MCP Server holds up.

✓ Verified directory serverOeis MCP Server · caseyjhand.com

Official endpoint

Operated by Oeis MCP Server (caseyjhand.com) at its documented MCP endpoint — not a third-party mirror or community re-host.

No sign-in needed

This server only exposes public data — no account and no credentials are involved when you connect.

Scanned before it goes live

gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.

Watched for drift

If Oeis MCP Server adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.

Run the free scanner on Oeis MCP Server's server →

How it works

Connected in three steps

Connect your gate

Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.

Pick Oeis MCP Server

Choose Oeis MCP Server in the gate directory. No sign-in needed.

Use it anywhere

Oeis MCP Server's tools are live in every AI client you've connected — with rules and logging built in.

Connect Oeis MCP Server free

Free to start · No credit card · No hosting needed

Straight from the server

The actual tools Oeis MCP Server exposes

Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.

oeis_identify_sequence — Identify integer sequences that contain a run of consecutive terms, e.g. "1, 2, 5, 14, 42". Returns up to 10 matches per page in OEIS releva

oeis_search_sequences — Search the OEIS using its query syntax: plain words, "quoted phrases", comma-separated terms, prefixes (keyword:, author:, name:, comment:,

oeis_get_sequence — Fetch one OEIS entry by A-number. Returns the name, data-line terms, offset, keywords, author, dates, and the sections: comments, formulas (

oeis_get_terms — List terms a(n) of a sequence with their indices n. Reads the entry's b-file when it has one — often thousands of terms beyond the data line

oeis_get_cross_refs — List sequences related to an OEIS entry. direction outgoing returns the A-numbers named in the entry's cross-reference (Cf.) lines, with any

oeis_list_reference — Look up OEIS vocabulary used by the other tools: keyword flags (nonn, core, tabl, cons, …), search syntax (prefixes, operators, wildcards, s

Author

Who runs the Oeis MCP Server MCP server?

caseyjhand.com

More servers from caseyjhand.com →

Own this server? Claim the listing →

Server facts

The Oeis MCP Server MCP server at a glance

Endpointhttps://oeis.caseyjhand.com/mcp

Operated byOeis MCP Server (caseyjhand.com)

CategoryDev tools

Sign-inNone — public data only

Available in gateYes — one-click connect

Works withClaude, ChatGPT, Cursor & any MCP client

FAQ

Questions, answered

Is there an official Oeis MCP Server MCP server?

Yes — Oeis MCP Server operates its own remote MCP server at oeis.caseyjhand.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.

How do I connect Oeis MCP Server to Claude or ChatGPT?

Add gate's gateway URL to your AI client once, then pick Oeis MCP Server in the directory. No account or sign-in is needed. From then on, Oeis MCP Server's tools are available in every client you've connected to gate.

Do I need to host anything?

No. Oeis MCP Server runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.

Is the Oeis MCP Server MCP server safe to connect?

It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.