fix: make bin/mcp-server generic and update installer

- Remove hardcoded path from bin/mcp-server wrapper script
- Script now works from any Phoenix project directory
- Installer creates .mcp.json with relative path (deps/excessibility/bin/mcp-server)
- Updates existing .mcp.json if present, adding excessibility server config

Bumps version to 0.10.2.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: lessthanseventy

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.10.2] - 2026-02-03
+
+### Fixed
+- Make `bin/mcp-server` a generic wrapper script that works from any Phoenix project directory
+- Installer now generates correct relative path (`deps/excessibility/bin/mcp-server`) in `.mcp.json`
+
 ## [0.10.1] - 2026-02-03
 
 ### Fixed

bin/mcp-server

@@ -1,12 +1,13 @@
 #!/bin/bash
-# Capture the client's working directory before switching to excessibility
+# MCP server wrapper for excessibility
+# Run this from your Phoenix project directory (where excessibility is a dependency)
+
 export MCP_CLIENT_CWD="$PWD"
-cd /home/andrew/projects/excessibility
 export TERM=dumb
 export NO_COLOR=1
 export ELIXIR_CLI_ECHO=false
 
-# Debug logging enabled - check /tmp/excessibility_mcp.log
-export MCP_LOG_FILE=/tmp/excessibility_mcp.log
+# Optional: enable debug logging
+# export MCP_LOG_FILE=/tmp/excessibility_mcp.log
 
 exec mix run --no-halt -e "Excessibility.MCP.Server.start()" 2>/dev/null

lib/excessibility/mcp/server.ex

@@ -27,7 +27,7 @@ defmodule Excessibility.MCP.Server do
 
   @server_info %{
     "name" => "excessibility",
-    "version" => "0.10.1"
+    "version" => "0.10.2"
   }
 
   @capabilities %{

lib/mix/tasks/install.ex

@@ -211,6 +211,7 @@ defmodule Mix.Tasks.Excessibility.Install do
     else
       igniter
       |> install_mcp_server()
+      |> create_mcp_json()
       |> install_skills_plugin()
     end
   end
@@ -272,6 +273,52 @@ defmodule Mix.Tasks.Excessibility.Install do
     end
   end
 
+  defp create_mcp_json(igniter) do
+    mcp_json_path = ".mcp.json"
+    mcp_config = mcp_json_content()
+
+    if File.exists?(mcp_json_path) do
+      update_existing_mcp_json(igniter, mcp_json_path, mcp_config)
+    else
+      Igniter.create_or_update_file(igniter, mcp_json_path, mcp_config, fn source -> source end)
+    end
+  end
+
+  defp update_existing_mcp_json(igniter, path, _new_config) do
+    with {:ok, content} <- File.read(path),
+         {:ok, existing} <- Jason.decode(content) do
+      maybe_add_excessibility_server(igniter, path, existing)
+    else
+      {:error, %Jason.DecodeError{}} ->
+        Igniter.add_warning(igniter, "Could not parse existing .mcp.json - skipping MCP config")
+
+      {:error, _} ->
+        igniter
+    end
+  end
+
+  defp maybe_add_excessibility_server(igniter, path, existing) do
+    servers = Map.get(existing, "mcpServers", %{})
+
+    if Map.has_key?(servers, "excessibility") do
+      igniter
+    else
+      updated = Map.put(existing, "mcpServers", Map.put(servers, "excessibility", mcp_server_entry()))
+      Igniter.create_or_update_file(igniter, path, Jason.encode!(updated, pretty: true), fn source -> source end)
+    end
+  end
+
+  defp mcp_server_entry do
+    %{
+      "command" => "deps/excessibility/bin/mcp-server",
+      "args" => []
+    }
+  end
+
+  defp mcp_json_content do
+    Jason.encode!(%{"mcpServers" => %{"excessibility" => mcp_server_entry()}}, pretty: true)
+  end
+
   defp install_skills_plugin(igniter) do
     dep_path = Mix.Project.deps_paths()[:excessibility] || File.cwd!()
     plugin_path = Path.join(dep_path, "priv/claude-plugin")

mix.exs

@@ -2,7 +2,7 @@ defmodule Excessibility.MixProject do
   use Mix.Project
 
   @source_url "https://github.com/lessthanseventy/excessibility"
-  @version "0.10.1"
+  @version "0.10.2"
 
   def project do
     [