# Hangar config for the OTEL collector example.
#
# This file did not exist. The compose file beside it mounted `./config.yaml`,
# a bare `config.yaml` pattern in `.gitignore` matched it at any depth, and so
# it was never committed -- Docker then created a directory at the mount source
# and the gateway died with `Is a directory: '/app/config.yaml'`. The example
# could not have worked from a clone. Found when CI first brought the compose
# examples up (#967).
#
# Tracing itself is switched on by the environment in `docker-compose.yml`
# (`MCP_TRACING_ENABLED`, `OTEL_EXPORTER_OTLP_ENDPOINT`), not from here. What
# this file provides is a server to generate spans about.

logging:
  level: INFO
  json_format: true

mcp_servers:
  # A subprocess server with no external dependencies, so the example shows
  # traces without needing an image, a registry or a network egress rule. Its
  # source is `examples/provider_math/server.py` in this repository; the
  # gateway starts it on the first tool call and traces that call.
  math:
    mode: subprocess
    command: ["python", "-m", "examples.provider_math.server"]
    idle_ttl_s: 300