Oeis MCP Server is an MCP server that MCP server for the OEIS (Online Encyclopedia of Integer Sequences) API. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 77/100 on MCPpedia's security, maintenance and efficiency rubric.
Config is the same across clients - only the file and path differ.
{
"mcpServers": {
"mcp-oeis": {
"command": "mcp-oeis"
}
}
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MCP server for the OEIS (Online Encyclopedia of Integer Sequences) API
Run this in your terminal to verify the server starts. Then let us know if it worked - your result helps other developers.
uvx 'mcp-oeis' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
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No known CVEs.
Checked mcp-oeis against OSV.dev.
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MCP server for the OEIS (Online Encyclopedia of Integer Sequences) API
mcp-name: io.github.daedalus/mcp-oeis
pip install mcp-oeis
Configure in your MCP settings:
{
"mcpServers": {
"mcp-oeis": {
"command": "mcp-oeis"
}
}
}
from mcp_oeis import mcp
# Get a sequence by ID
result = mcp.get_sequence_by_id("A000109")
print(result["terms"]) # [1, 1, 1, 2, 5, 14, ...]
# Search by terms
results = mcp.search_by_terms([1, 1, 2, 3, 5, 8])
print(results[0]["name"]) # "Fibonacci numbers"
# Search by name
results = mcp.search_by_name("prime")
print(results[0]["id"]) # "A000040"
Get a sequence by its OEIS ID (e.g., "A000109" for simplicial polyhedra, "A000045" for Fibonacci).
Search OEIS sequences by providing integer terms. For example, searching [1,1,2,3,5,8] will find the Fibonacci sequence.
Search OEIS sequences by name or keyword. For example, searching "Fibonacci" will find Fibonacci-related sequences.
git clone https://github.com/daedalus/mcp-oeis.git
cd mcp-oeis
pip install -e ".[test]"
# run tests
pytest
# format
ruff format src/ tests/
# lint
ruff check src/ tests/
# type check
mypy src/