@marsnme/mcp-gateway

@marsnme/mcp-gateway

MarsNMe MCP Gateway for memory tools over streamable HTTP transport.

This package runs an MCP server at POST /mcp and exposes health status at GET /health.

Requirements

• Node.js >=20
• Supabase project with required schema migrations applied
• Jina API key for embedding-based memory search

Quick start (npx)

MCP_PROFILE=coco \
SUPABASE_BASE_URL=https://<your-project-ref>.supabase.co \
SUPABASE_SERVICE_ROLE_KEY=<your-service-role-key> \
JINA_API_KEY=<your-jina-api-key> \
npx -y @marsnme/mcp-gateway

After startup:

• Health: http://127.0.0.1:18790/health
• MCP endpoint: http://127.0.0.1:18790/mcp

Required environment variables

• MCP_PROFILE
  • Any lowercase profile ID matching ^[a-z][a-z0-9_-]*$ (for example: coco, toto, my-agent)
  • Legacy built-in IDs: coco and toto
• SUPABASE_BASE_URL
  • Your Supabase REST project URL
• SUPABASE_SERVICE_ROLE_KEY (recommended) or SUPABASE_SERVICE_KEY
  • Service role key used for database operations
• JINA_API_KEY
  • Required for semantic search / embedding features

Common optional environment variables

• PORT
  • Overrides the HTTP port used by the gateway
  • If omitted, the gateway resolves a profile-based default:
    • coco → 18790
    • toto → 18791
    • other profile IDs → deterministic port in 20000-29999
• MCP_REQUIRE_BEARER
  • Set true to require Authorization: Bearer <token> on MCP calls
• MCP_OAUTH_ENABLED
  • OAuth endpoints are enabled by default (set false to disable)
• MCP_CLIENT_ID and MCP_CLIENT_SECRET
  • Optional static OAuth client credentials

Minimal validation

Check service health:

curl -sS http://127.0.0.1:18790/health

List tools:

curl -sS http://127.0.0.1:18790/mcp \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}'

Deployment safety gate (before restart)

For upgrades, run database migrations with an explicit DDL-capable role and gate schema compatibility before restarting services.

Recommended role guidance:

• Use a role that can execute DDL on target schemas.
• On Supabase-hosted Postgres this is typically supabase_admin (not postgres).

Schema gate command:

bash deploy/phase2/pre_deploy_schema_gate.sh \
  --db-url "<postgres://supabase_admin:<password>@<host>:5432/postgres>" \
  --profiles coco,toto \
  --expected-role supabase_admin

• If gate exits non-zero, stop deployment and do not restart services.

Database setup and full onboarding

For migrations and full setup details:

• Repository README: https://github.com/Marsmanleo/MarsNMe/blob/main/README.md
• Zero-to-first-recall onboarding: https://github.com/Marsmanleo/MarsNMe/blob/main/docs/onboarding-a-mcp-zero-to-recall.md