SERVER

oeis-mcp-server

Rank #15,520

io.github.cyanheads/oeis-mcp-server

Identify integer sequences by terms, search the OEIS, read formulas, programs, b-files, cross-refs.

3 versions

1 GitHub stars

by cyanheads (165 servers)View repository ↗

First listed

Oct 1, 2026

Last publish date

Oct 18, 2026

PURPOSE

What you can do with oeis-mcp-server

oeis-mcp-server is a Model Context Protocol (MCP) server published by cyanheads. It ranks #15,520 of 151,203 active servers on MCP Toplist, and its repository has 1 GitHub stars. oeis-mcp-server is listed across 2 registries — Official MCP and Glama, with 3 tracked versions. It was first listed on Oct 1, 2026 and most recently updated on Oct 18, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What oeis-mcp-server can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using oeis-mcp-server

DeclaredNo credentialsNo credentials declared

The registry listing declares no required environment variables or authentication. This is declared metadata, not a verified install — the repository README is the authority.

MCP Toplist probed the public endpoint on Oct 14, 2026 and could not complete the MCP handshake (jsonrpc error). Requirements remain unverified.

Declared by Glama, last synced Oct 23, 2026. Not independently verified by MCP Toplist.

Declared in the registry install config

MCP_LOG_LEVEL · optional
OEIS_QUEUE_MAX_WAIT_MS · optional
MCP_TRANSPORT_TYPE · optional
MCP_HTTP_HOST · optional
MCP_HTTP_PORT · optional
MCP_HTTP_ENDPOINT_PATH · optional
MCP_AUTH_MODE · optional

Hosted endpoint declared as public.

INSTALLATION AND FIRST TASK

Connect oeis-mcp-server and confirm it works

Remote · HTTP

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

npm package

claude mcp add oeis-mcp-server -e "MCP_LOG_LEVEL=<your MCP_LOG_LEVEL>" -e "OEIS_QUEUE_MAX_WAIT_MS=<your OEIS_QUEUE_MAX_WAIT_MS>" -- npx -y @cyanheads/oeis-mcp-server

Replace each placeholder with your own value before saving.

npm package

claude mcp add oeis-mcp-server -e "MCP_TRANSPORT_TYPE=<your MCP_TRANSPORT_TYPE>" -e "MCP_HTTP_HOST=<your MCP_HTTP_HOST>" -e "MCP_HTTP_PORT=<your MCP_HTTP_PORT>" -e "MCP_HTTP_ENDPOINT_PATH=<your MCP_HTTP_ENDPOINT_PATH>" -e "MCP_AUTH_MODE=<your MCP_AUTH_MODE>" -e "MCP_LOG_LEVEL=<your MCP_LOG_LEVEL>" -e "OEIS_QUEUE_MAX_WAIT_MS=<your OEIS_QUEUE_MAX_WAIT_MS>" -- npx -y @cyanheads/oeis-mcp-server

Replace each placeholder with your own value before saving.

Remote · HTTP

[mcp_servers.oeis-mcp-server]
url = "https://oeis.caseyjhand.com/mcp"

Add to ~/.codex/config.toml.

npm package

[mcp_servers.oeis-mcp-server]
command = "npx"
args = ["-y", "@cyanheads/oeis-mcp-server"]

[mcp_servers.oeis-mcp-server.env]
MCP_LOG_LEVEL = "<your MCP_LOG_LEVEL>"
OEIS_QUEUE_MAX_WAIT_MS = "<your OEIS_QUEUE_MAX_WAIT_MS>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

npm package

[mcp_servers.oeis-mcp-server]
command = "npx"
args = ["-y", "@cyanheads/oeis-mcp-server"]

[mcp_servers.oeis-mcp-server.env]
MCP_TRANSPORT_TYPE = "<your MCP_TRANSPORT_TYPE>"
MCP_HTTP_HOST = "<your MCP_HTTP_HOST>"
MCP_HTTP_PORT = "<your MCP_HTTP_PORT>"
MCP_HTTP_ENDPOINT_PATH = "<your MCP_HTTP_ENDPOINT_PATH>"
MCP_AUTH_MODE = "<your MCP_AUTH_MODE>"
MCP_LOG_LEVEL = "<your MCP_LOG_LEVEL>"
OEIS_QUEUE_MAX_WAIT_MS = "<your OEIS_QUEUE_MAX_WAIT_MS>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

Remote · HTTP

https://oeis.caseyjhand.com/mcp

Settings → Connectors → “Add custom connector”, then paste this URL.

npm package

{
  "mcpServers": {
    "oeis-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ],
      "env": {
        "MCP_LOG_LEVEL": "<your MCP_LOG_LEVEL>",
        "OEIS_QUEUE_MAX_WAIT_MS": "<your OEIS_QUEUE_MAX_WAIT_MS>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "oeis-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ],
      "env": {
        "MCP_TRANSPORT_TYPE": "<your MCP_TRANSPORT_TYPE>",
        "MCP_HTTP_HOST": "<your MCP_HTTP_HOST>",
        "MCP_HTTP_PORT": "<your MCP_HTTP_PORT>",
        "MCP_HTTP_ENDPOINT_PATH": "<your MCP_HTTP_ENDPOINT_PATH>",
        "MCP_AUTH_MODE": "<your MCP_AUTH_MODE>",
        "MCP_LOG_LEVEL": "<your MCP_LOG_LEVEL>",
        "OEIS_QUEUE_MAX_WAIT_MS": "<your OEIS_QUEUE_MAX_WAIT_MS>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "mcpServers": {
    "oeis-mcp-server": {
      "url": "https://oeis.caseyjhand.com/mcp"
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).

npm package

{
  "mcpServers": {
    "oeis-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ],
      "env": {
        "MCP_LOG_LEVEL": "<your MCP_LOG_LEVEL>",
        "OEIS_QUEUE_MAX_WAIT_MS": "<your OEIS_QUEUE_MAX_WAIT_MS>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "oeis-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ],
      "env": {
        "MCP_TRANSPORT_TYPE": "<your MCP_TRANSPORT_TYPE>",
        "MCP_HTTP_HOST": "<your MCP_HTTP_HOST>",
        "MCP_HTTP_PORT": "<your MCP_HTTP_PORT>",
        "MCP_HTTP_ENDPOINT_PATH": "<your MCP_HTTP_ENDPOINT_PATH>",
        "MCP_AUTH_MODE": "<your MCP_AUTH_MODE>",
        "MCP_LOG_LEVEL": "<your MCP_LOG_LEVEL>",
        "OEIS_QUEUE_MAX_WAIT_MS": "<your OEIS_QUEUE_MAX_WAIT_MS>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "servers": {
    "oeis-mcp-server": {
      "type": "http",
      "url": "https://oeis.caseyjhand.com/mcp"
    }
  }
}

Save as .vscode/mcp.json in your workspace.

npm package

{
  "servers": {
    "oeis-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ],
      "env": {
        "MCP_LOG_LEVEL": "<your MCP_LOG_LEVEL>",
        "OEIS_QUEUE_MAX_WAIT_MS": "<your OEIS_QUEUE_MAX_WAIT_MS>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

npm package

{
  "servers": {
    "oeis-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ],
      "env": {
        "MCP_TRANSPORT_TYPE": "<your MCP_TRANSPORT_TYPE>",
        "MCP_HTTP_HOST": "<your MCP_HTTP_HOST>",
        "MCP_HTTP_PORT": "<your MCP_HTTP_PORT>",
        "MCP_HTTP_ENDPOINT_PATH": "<your MCP_HTTP_ENDPOINT_PATH>",
        "MCP_AUTH_MODE": "<your MCP_AUTH_MODE>",
        "MCP_LOG_LEVEL": "<your MCP_LOG_LEVEL>",
        "OEIS_QUEUE_MAX_WAIT_MS": "<your OEIS_QUEUE_MAX_WAIT_MS>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "mcpServers": {
    "oeis-mcp-server": {
      "serverUrl": "https://oeis.caseyjhand.com/mcp"
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

npm package

{
  "mcpServers": {
    "oeis-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ],
      "env": {
        "MCP_LOG_LEVEL": "<your MCP_LOG_LEVEL>",
        "OEIS_QUEUE_MAX_WAIT_MS": "<your OEIS_QUEUE_MAX_WAIT_MS>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "oeis-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ],
      "env": {
        "MCP_TRANSPORT_TYPE": "<your MCP_TRANSPORT_TYPE>",
        "MCP_HTTP_HOST": "<your MCP_HTTP_HOST>",
        "MCP_HTTP_PORT": "<your MCP_HTTP_PORT>",
        "MCP_HTTP_ENDPOINT_PATH": "<your MCP_HTTP_ENDPOINT_PATH>",
        "MCP_AUTH_MODE": "<your MCP_AUTH_MODE>",
        "MCP_LOG_LEVEL": "<your MCP_LOG_LEVEL>",
        "OEIS_QUEUE_MAX_WAIT_MS": "<your OEIS_QUEUE_MAX_WAIT_MS>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "mcpServers": {
    "oeis-mcp-server": {
      "url": "https://oeis.caseyjhand.com/mcp"
    }
  }
}

npm package

{
  "mcpServers": {
    "oeis-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ],
      "env": {
        "MCP_LOG_LEVEL": "<your MCP_LOG_LEVEL>",
        "OEIS_QUEUE_MAX_WAIT_MS": "<your OEIS_QUEUE_MAX_WAIT_MS>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "oeis-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/oeis-mcp-server"
      ],
      "env": {
        "MCP_TRANSPORT_TYPE": "<your MCP_TRANSPORT_TYPE>",
        "MCP_HTTP_HOST": "<your MCP_HTTP_HOST>",
        "MCP_HTTP_PORT": "<your MCP_HTTP_PORT>",
        "MCP_HTTP_ENDPOINT_PATH": "<your MCP_HTTP_ENDPOINT_PATH>",
        "MCP_AUTH_MODE": "<your MCP_AUTH_MODE>",
        "MCP_LOG_LEVEL": "<your MCP_LOG_LEVEL>",
        "OEIS_QUEUE_MAX_WAIT_MS": "<your OEIS_QUEUE_MAX_WAIT_MS>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

ALTERNATIVES

When to choose another server

Other servers by cyanheads

View all cyanheads servers →

No task-specific alternatives are catalogued for oeis-mcp-serveryet; the list above is its publisher's other servers.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed: Oct 1, 2026
Latest version published: Oct 18, 2026
Version history: 3 versions tracked (below)
Requirements evidence: MCP Toplist probed the public endpoint on Oct 14, 2026 and could not complete the MCP handshake (jsonrpc error). Requirements remain unverified.
Profile checked: Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of: Oct 23, 2026

Registry sightings

Official MCP ↗listed since Oct 1, 2026 · still listed
Glama ↗listed since Oct 1, 2026 · still listed

Do you maintain oeis-mcp-server? to correct or enrich this profile.

VERSIONS

Available versions (3)

Version	Published
0.1.3	Oct 18, 2026
0.1.2	Oct 2, 2026
0.1.1	Oct 1, 2026

STANDING

#15,520of 151,203 active serversTop 25%

Ranks ahead of 135,683 of 151,203 servers on MCP Toplist.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.cyanheads%2Foeis-mcp-server.svg)](https://mcptoplist.com/server/io.github.cyanheads%2Foeis-mcp-server)

HTML

<a href="https://mcptoplist.com/server/io.github.cyanheads%2Foeis-mcp-server"><img src="https://mcptoplist.com/badge/io.github.cyanheads%2Foeis-mcp-server.svg" alt="MCP Toplist: Top 25% of 151,203" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains oeis-mcp-server?: oeis-mcp-server is maintained by cyanheads, which publishes 165 MCP servers (2813 total versions) tracked on MCP Toplist.
Is oeis-mcp-server listed on the Official MCP Registry?: Yes — oeis-mcp-server is listed on the Official MCP Registry, alongside Glama.
How many versions does oeis-mcp-server have?: MCP Toplist tracks 3 versions of oeis-mcp-server, most recently published on Oct 18, 2026.
Where can I find the source code for oeis-mcp-server?: The source code for oeis-mcp-server is hosted at github.com/cyanheads/oeis-mcp-server.

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