# Profile for stdio transport (local use)
# This profile is used when running locally via npm/npx wrapper
#
# IMPORTANT: For MCP stdio protocol, stdout must ONLY contain JSON-RPC messages.
# All logging and banners must be disabled or redirected to stderr.
spring:
main:
web-application-type: none # Disable web server for stdio transport
banner-mode: off # Disable Spring Boot ASCII banner (must not go to stdout)
ai:
mcp:
server:
transport: stdio
# CRITICAL: Use SYNC type for synchronous methods
type: SYNC
annotation-scanner:
enabled: true
# Logging Configuration for stdio mode
# All logs must go to stderr, not stdout, to avoid breaking JSON-RPC protocol
logging:
# Use System.err for console output (stderr) instead of System.out (stdout)
# This ensures MCP JSON-RPC messages on stdout are not polluted
file:
# Optionally log to file for debugging
# name: mcp-server.log
# Reduce log verbosity for stdio mode to minimize stderr noise
level:
root: WARN # Only warnings and errors
adrianmikula.jakartamigration: INFO # Keep our app logs at INFO
org.springframework.ai.mcp: INFO # MCP logs at INFO level
org.springframework: WARN # Spring framework logs at WARN
# Log pattern - output to stderr
pattern:
# Use %logger for shorter names, output to stderr
console: "%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n"
