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Add intialized notification. #77

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Merged
merged 2 commits into from
Oct 19, 2025
Merged

Add intialized notification. #77

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0e90529
Add nitialized message.
galachad Oct 16, 2025
0f2f40e
add NEWS entry
simonpcouch Oct 19, 2025
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1 change: 1 addition & 0 deletions NEWS.md
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
# mcptools (development version)

* `mcp_tools()` now sends and receives a `"notifications/initialized"` (#77 by @galachad).
* `mcp_session()` now returns invisibly the nanonext socket used for communicating with the server.
* `mcp_server()` gains logical argument `session_tools`, allowing users to opt-out of presenting R sessions tools to clients.

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9 changes: 8 additions & 1 deletion R/client.R
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Expand Up @@ -195,6 +195,7 @@ error_no_mcp_config <- function(call) {

add_mcp_server <- function(process, name) {
response_initialize <- send_and_receive(process, mcp_request_initialize())
send_and_receive(process, mcp_request_initialized())
response_tools_list <- send_and_receive(process, mcp_request_tools_list())

the$mcp_servers[[name]] <- list(
Expand Down Expand Up @@ -419,7 +420,13 @@ mcp_request_initialize <- function() {
}

# step 2: send initialized notification
# This is a MAY in the protocol, so omitting.
mcp_request_initialized <- function() {
list(
jsonrpc = "2.0",
method = "notifications/initialized"
)
}


# step 3: request the list of tools
mcp_request_tools_list <- function() {
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