Environment variables

Variable	Required	Description
NENE_MCP_API_BASE_URL	Yes	REST base URL (e.g. http://localhost:8080)
NENE_MCP_TOOLS_JSON	No	Absolute path to tool catalog JSON
NENE_MCP_BEARER_TOKEN	For write tools	Bearer token for protected endpoints

SMB / staging operators (optional)

Variable	Default	Description
NENE_MCP_HTTP_TIMEOUT_SEC	10	HTTP stream timeout in seconds (1–120; invalid values fall back to 10)
NENE_MCP_TLS_CA_FILE	unset	Absolute path to PEM CA bundle for https:// base URLs (internal/staging CAs)
NENE_MCP_LOG	unset	Set to stderr to log one safe line per HTTP call on stderr (method, path, status, duration — never Bearer or bodies)

See SMB adoption checklist.

NENE2 aliases

Accepted for compatibility:

nene-mcp	Alias
NENE_MCP_API_BASE_URL	NENE2_LOCAL_API_BASE_URL
NENE_MCP_TOOLS_JSON	NENE2_LOCAL_TOOLS_JSON

Behavior notes

• Omitting NENE_MCP_TOOLS_JSON → only nene_mcp_about is listed
• Invalid catalog path → tools/list fails with JSON-RPC error
• Bearer is never echoed in tool responses or logs on stdout
• NENE_MCP_LOG=stderr never writes to stdout (JSON-RPC wire stays clean)

Example (Cursor)

"env": {
  "NENE_MCP_API_BASE_URL": "http://localhost:8080",
  "NENE_MCP_TOOLS_JSON": "/ABS/PATH/docs/mcp/tools.json",
  "NENE_MCP_HTTP_TIMEOUT_SEC": "30",
  "NENE_MCP_LOG": "stderr"
}

Example (staging HTTPS + private CA)

"env": {
  "NENE_MCP_API_BASE_URL": "https://staging-api.example.internal",
  "NENE_MCP_TOOLS_JSON": "/ABS/PATH/docs/mcp/tools.json",
  "NENE_MCP_BEARER_TOKEN": "from-secret-store",
  "NENE_MCP_TLS_CA_FILE": "/etc/ssl/certs/internal-ca.pem",
  "NENE_MCP_HTTP_TIMEOUT_SEC": "45",
  "NENE_MCP_LOG": "stderr"
}