Package: mcptools 0.2.1.9000

Simon Couch

mcptools: Model Context Protocol Servers and Clients

Implements the Model Context Protocol (MCP). Users can start 'R'-based servers, serving functions as tools for large language models to call before responding to the user in MCP-compatible apps like 'Claude Desktop' and 'Claude Code', with options to run those tools inside of interactive 'R' sessions. On the other end, when 'R' is the client via the 'ellmer' package, users can register tools from third-party MCP servers to integrate additional context into chats.

Authors:Simon Couch [aut, cre], Winston Chang [aut], Charlie Gao [aut], Posit Software, PBC [cph, fnd]

mcptools_0.2.1.9000.tar.gz
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mcptools_0.2.1.9000.tgz(r-4.6-any)mcptools_0.2.1.9000.tgz(r-4.5-any)
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mcptools_0.2.1.9000.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
mcptools/json (API)

# Install 'mcptools' in R:

install.packages('mcptools', repos = c('https://posit-dev.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/posit-dev/mcptools/issues

Pkgdown/docs site:https://posit-dev.github.io

On CRAN:

mcp-server

9.71 score 178 stars 1 packages 97 scripts 1.8k downloads 3 exports 32 dependencies

Last updated from:41a8807dbd. Checks:9 OK. Indexed: yes.

Target	Result	Time
linux-devel-x86_64	OK	139
source / vignettes	OK	199
linux-release-x86_64	OK	137
macos-release-arm64	OK	101
macos-oldrel-arm64	OK	134
windows-devel	OK	73
windows-release	OK	99
windows-oldrel	OK	88
wasm-release	OK	152

Exports:mcp_server mcp_session mcp_tools

Dependencies:askpass cli coro curl ellmer fastmap glue httpuv httr2 jsonlite later lifecycle magrittr nanonext openssl otel pillar pkgconfig processx promises ps R6 rappdirs Rcpp rlang S7 sys tibble utf8 vctrs withr yaml

R as an MCP server

The basics | Posit Connect | Multiple clients and R sessions | Custom tools

Rendered fromserver.Rmdusingknitr::rmarkdown

Last update: 2026-06-26
Started: 2025-06-26

Help page	Topics
R as a client: Define ellmer tools from MCP servers	client mcp_client mcp_tools
R as a server: Configure R-based tools with LLM-enabled apps	mcp_server mcp_session server

Package: mcptools 0.2.1.9000

mcptools: Model Context Protocol Servers and Clients

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