PiSharp 1.1.0.1

PiSharp 1.1.0.1

A C#-only patch on the Pi v1.1.0 baseline (commit
abe508e1b89912adde45528136c3221eb69acdd7). It ports Pi's tool_search and makes MCP
tools callable. Each change is tracked in
sync-1.1.0-applicability.json
(rows gap.tool-search and mcp.exposure-and-prompt).

Fixed

• MCP tool calls work. In 1.1.0 the CLI declared MCP tools to the model but refused
  every call with "Final tool action was denied." Tools of the servers you configure in
  mcp.json can now be called, as in Pi: configuring a server trusts it, and there is no
  separate approval step. Tools of servers that were skipped, and of an earlier session
  generation after a reload, stay refused.

New

• tool_search. Pi's BM25 search over deferred tools, ported with the same
  tokenizer, ranking, result text and errors. Found tools are loaded for the model's next
  call and recorded in the session.
• Deferred MCP servers connect. Servers whose tools use deferred exposure now
  connect in normal sessions. Their tools stay hidden until tool_search loads them.
  --tools and --exclude-tools gate tool_search as in Pi; leaving it out keeps the
  servers connected but prints Pi's warning that their tools can't be called.

Differences from Pi

• tool_search exists only when a configured server has deferred tools. Pi always
  registers it, switched off.
• tool_search doesn't wait for servers that are still connecting, so a search early in
  a one-shot prompt can find nothing.
• Live sessions send a literal system prompt, so the mcp_servers section isn't sent
  there yet.
• Servers that need codemode still don't connect. Codemode is planned for 1.1.0.3.

Packages

All library packages and the PiSharp.Cli dotnet tool are published as 1.1.0.1:

dotnet tool update -g PiSharp.Cli