ogm-agent-bridge 0.1.6

MCP bridge for OpenGraphMemory

ogm-agent-bridge

MCP stdio bridge from Claude Code, OpenCode, and Hermes to one OpenGraphMemory project.

Bridge uses authenticated OpenGraphMemory REST APIs only. It is stateless: no local database, session mapping, direct PostgreSQL, Neo4j, or object-store access.

Status

Alpha. PyPI releases are published from GitHub Actions on v* tags. Source install is also supported for development.

Tools

• ogm_health
• ogm_list_datasets
• ogm_search_entities
• ogm_get_entity
• ogm_get_neighbors
• ogm_find_path
• ogm_get_subgraph
• ogm_get_graph
• ogm_get_evidence
• ogm_get_relation_evidence
• ogm_upload_document

Read tools inspect PostgreSQL-authoritative graph data and evidence. ogm_upload_document is only write tool. No delete, update, admin, project-create, relation-review, analytics-refresh, memory, or semantic-retrieval tools exist.

Install

Install from PyPI with uv:

uv tool install ogm-agent-bridge

Or run without installing:

uvx ogm-agent-bridge --version

pipx also works:

pipx install ogm-agent-bridge

For source development:

git clone https://github.com/ardiannurcahya/ogm-agent-bridge.git "$HOME/src/ogm-agent-bridge"
cd "$HOME/src/ogm-agent-bridge"
uv sync --locked

Configure

Set these environment variables before starting your MCP client:

OGM_BASE_URL=http://localhost:8000
OGM_API_KEY=<project-api-key>
OGM_PROJECT_ID=<project-uuid>
OGM_PERMISSION_PROFILE=read-only

Use OGM_PERMISSION_PROFILE=read-only for graph search only. Use OGM_PERMISSION_PROFILE=personal-safe only when reviewed document uploads are needed.

Optional upload roots:

OGM_UPLOAD_ROOTS=/absolute/path/to/allowed/docs

More options: Configuration.

MCP Client Setup

Claude Code

Add MCP server config to project .mcp.json:

{
  "mcpServers": {
    "ogm": {
      "command": "uvx",
      "args": ["ogm-agent-bridge"],
      "env": {
        "OGM_BASE_URL": "${OGM_BASE_URL}",
        "OGM_API_KEY": "${OGM_API_KEY}",
        "OGM_PROJECT_ID": "${OGM_PROJECT_ID}",
        "OGM_PERMISSION_PROFILE": "${OGM_PERMISSION_PROFILE}"
      }
    }
  }
}

Verify:

claude mcp list

OpenCode

Add MCP server config to opencode.json or opencode.jsonc:

{
  "mcp": {
    "ogm": {
      "type": "local",
      "command": ["uvx", "ogm-agent-bridge"],
      "environment": {
        "OGM_BASE_URL": "{env:OGM_BASE_URL}",
        "OGM_API_KEY": "{env:OGM_API_KEY}",
        "OGM_PROJECT_ID": "{env:OGM_PROJECT_ID}",
        "OGM_PERMISSION_PROFILE": "{env:OGM_PERMISSION_PROFILE}"
      },
      "enabled": true
    }
  }
}

Restart OpenCode after editing config.

Hermes

Add server under mcp_servers:

mcp_servers:
  ogm:
    command: "uvx"
    args:
      - "ogm-agent-bridge"
    env:
      OGM_BASE_URL: "${OGM_BASE_URL}"
      OGM_API_KEY: "${OGM_API_KEY}"
      OGM_PROJECT_ID: "${OGM_PROJECT_ID}"
      OGM_PERMISSION_PROFILE: "${OGM_PERMISSION_PROFILE}"
    enabled: true

Verify:

hermes mcp test ogm

For source development, replace uvx ogm-agent-bridge with:

uv run --project /absolute/path/ogm-agent-bridge ogm-agent-bridge

MCP uses stdio. Diagnostics go to stderr.

Use

After MCP server is connected, ask your agent to use OGM tools. Start with health and dataset discovery:

Call ogm_health, then ogm_list_datasets.

Search entities in one dataset:

{"dataset_id":"dataset-id","q":"OpenGraphMemory","limit":10}

Inspect graph context with ogm_get_entity, ogm_get_neighbors, ogm_get_subgraph, ogm_get_graph, or ogm_find_path. Use ogm_get_relation_evidence or ogm_get_evidence before making evidence-backed claims.

Upload documents only when profile is personal-safe and file path is under OGM_UPLOAD_ROOTS:

Call ogm_upload_document with an approved local file path and dataset/project context.

More Docs

• Claude Code
• OpenCode
• Hermes
• Configuration
• Tool schemas

Validation

uv sync --dev --locked
uv run ruff format --check .
uv run ruff check .
uv run mypy src
uv run pytest -q
uv build

Security

Use project-scoped keys. Keep .env and keys outside upload roots. Start read-only; use personal-safe only for reviewed document uploads. See security.

License

MIT. See LICENSE.