MIRASTACK Redfish MCP Server

MIRASTACK Redfish MCP Server

Governed MCP server for DMTF Redfish-compliant BMCs — iDRAC, iLO, XCC,

OpenBMC and compatible implementations. Read-only by default: mutating

tools are not registered unless you explicitly raise the write mode, and

every mutation is a dry-run until confirmed.

Built by MIRASTACK LABS. Apache-2.0.

Highlights

• MCP stdio and streamable-http transports via the official Python MCP SDK.
• Distilled schema metadata from DMTF Redfish-Publications, pinned to release 2026.1.
• Protocol-correct Redfish behavior: session auth, ETag/If-Match, 202 task polling, and registry-backed error rendering.
• Safe write controls: tiered registration plus dry-run-first confirmations.

Why this exists

A BMC is a pre-OS, out-of-band control plane with authority above normal host-level root access. Giving an autonomous agent BMC access without strong guardrails creates immediate blast-radius risk across power, boot, firmware, and account boundaries. This server forces dangerous actions behind deliberate write-mode elevation, and keeps every mutation dry-run by default so intent can be reviewed before application. The result is a governed operational interface rather than an always-armed remote control. The model can still move fast on diagnostics, but privilege transitions become explicit and auditable.

Installation

pip install mirastack-redfish-mcp

Try it in 60 seconds (no hardware)

Run a local DMTF mockup, start the MCP server in read-only mode, and call a read tool:

docker compose -f examples/mockup/docker-compose.yml up -d

export MIRASTACK_REDFISH_HOST="http://127.0.0.1:18000" export MIRASTACK_REDFISH_USERNAME=" " export MIRASTACK_REDFISH_PASSWORD=" " export MIRASTACK_REDFISH_WRITE_MODE="off" mirastack-redfish-mcp --transport stdio

Example tool call:

{"tool":"service_info","arguments":{}}

Expected output shape:

{

"endpoint": "default", "service_root": { "@odata.id": "/redfish/v1" }, "capabilities": { "redfish_version": "..." } }

Discovery mode

The server also starts with zero endpoint credentials and still serves read-only tool discovery (for MCP scanner validation and metadata indexing). In this mode, schema/corpus-backed tools continue to work, while BMC-connected tools return a configuration error that names the required environment variables: MIRASTACK_REDFISH_HOST, MIRASTACK_REDFISH_USERNAME, and MIRASTACK_REDFISH_PASSWORD (or MIRASTACK_REDFISH_PASSWORD_FILE), or MIRASTACK_REDFISH_ENDPOINTS for multi-endpoint setup.

Discovery mode also covers a missing endpoints file. If MIRASTACK_REDFISH_ENDPOINTS points at a path that does not exist - which is how container platforms and MCP directory scanners inject a placeholder - the server logs a warning naming that path on stderr and starts with zero endpoints. A file that *does* exist but cannot be read or parsed remains a hard startup failure, and a partially configured single endpoint (for example MIRASTACK_REDFISH_HOST without MIRASTACK_REDFISH_PASSWORD) still raises, so a typo can never silently downgrade a configured deployment.

Quick Start (hardware, stdio)

export MIRASTACK_REDFISH_HOST="https://192.0.2.10"

export MIRASTACK_REDFISH_USERNAME=" " export MIRASTACK_REDFISH_PASSWORD=" " export MIRASTACK_REDFISH_WRITE_MODE="off" mirastack-redfish-mcp --transport stdio

Quick Start (streamable-http)

mirastack-redfish-mcp \

--transport streamable-http \ --host 127.0.0.1 \ --port 8000 \ --path /mcp \ --stateless-http \ --json-response

Warning: binding to 0.0.0.0 exposes BMC control to every host that can reach this port. Bind to loopback unless the listener sits behind an authenticating proxy on a trusted management network.

Configuration

Canonical environment variables

Use MIRASTACK_REDFISH_* variables:

• MIRASTACK_REDFISH_HOST
• MIRASTACK_REDFISH_USERNAME
• MIRASTACK_REDFISH_PASSWORD or MIRASTACK_REDFISH_PASSWORD_FILE
• optional: MIRASTACK_REDFISH_VERIFY_SSL (default: `true`), MIRASTACK_REDFISH_CA_BUNDLE, MIRASTACK_REDFISH_TIMEOUT_SEC, MIRASTACK_REDFISH_AUTH_MODE

Multi-endpoint configuration

Set MIRASTACK_REDFISH_ENDPOINTS to inline JSON or a YAML/JSON file:

{

"idrac-prod": { "base_url": "https://192.0.2.10", "username": " ", "password_file": "/run/secrets/idrac_password", "verify_ssl": true, "read_only": true }, "ilo-lab": { "base_url": "https://192.0.2.11", "username": " ", "password": " ", "verify_ssl": true } }

Lab-only override (not recommended for production):

{

"ilo-lab": { "verify_ssl": false } }

Set MIRASTACK_REDFISH_DEFAULT_ENDPOINT to choose the default endpoint.

Compatibility

Legacy bare REDFISH_* environment variables are still read as a fallback, with a one-time deprecation warning per variable.

Tool registration profile

• MIRASTACK_REDFISH_TOOL_PROFILE=full (default): all toolsets allowed by write mode.
• MIRASTACK_REDFISH_TOOL_PROFILE=standard: excludes raw write escape hatches.
• MIRASTACK_REDFISH_TOOL_PROFILE=core: curated 15-tool small-model surface.
• MIRASTACK_REDFISH_TOOLSETS (comma-separated) overrides profiles with explicit toolsets.

Measured advertised tool-schema payload at MIRASTACK_REDFISH_WRITE_MODE=full: core 20,795 bytes (15 tools), standard 43,669 bytes (33 tools), full 54,745 bytes (40 tools). Re-measure with python3 scripts/check_tool_metadata.py --sizes.

Write Safety Model

• MIRASTACK_REDFISH_WRITE_MODE=off (default): mutating tools are not registered.
• MIRASTACK_REDFISH_WRITE_MODE=power: power/reset/boot control tools are registered.
• MIRASTACK_REDFISH_WRITE_MODE=config: config-tier tools are registered.
• MIRASTACK_REDFISH_WRITE_MODE=full: full-tier tools are registered.

Every mutating tool accepts confirm:

• confirm=false: dry-run response (dry_run=true, applied=false) with next_step.
• confirm=true: action is applied.

Per-endpoint read_only=true overrides global write mode and blocks all writes on that endpoint.

Tier contract

• Power tier: set_power_state, set_boot_override, reset_manager, cancel_task
• Config tier: set_bios_attributes, eject_virtual_media, redfish_patch, redfish_post, redfish_delete, redfish_invoke_action
• Full tier: insert_virtual_media, clear_logs, manage_account, simple_update, reset_to_defaults

Development

python3 -m venv .venv

source .venv/bin/activate pip install -e .[dev] make build-index make verify

The schema index is generated from DMTF Redfish-Publications, pinned to one release for reproducibility. See CONTRIBUTING.md for refresh procedure.

Registry Publishing Notes

• server.json includes PyPI and OCI package definitions for MCP Registry.
• This README carries the required marker: mcp-name: ai.mirastacklabs/mirastack-redfish-mcp.
• Docker image includes the io.modelcontextprotocol.server.name OCI label.
• Install the official publisher CLI via Homebrew: brew install mcp-publisher.
• Do not use npx mcp-publisher or pip install mcp-publisher for registry publishing.

Container and directory deployments

The published image puts the console script on PATH, so docker run ... mirastack-redfish-mcp --transport stdio works unchanged.

Some MCP directories ignore the repository Dockerfile and generate their own image from source. If that generated build installs with uv sync, the project lands in a virtualenv at /app/.venv and the console script is not on PATH, so a launcher that spawns the bare name fails with ENOENT. Point the launcher at the absolute path instead:

{

"buildSteps": ["uv sync"], "cmdArguments": ["/app/.venv/bin/mirastack-redfish-mcp", "--transport", "stdio"] }

A placeholder MIRASTACK_REDFISH_ENDPOINTS path that the platform never creates is safe - the server starts in discovery mode and serves the read-only tool surface.

Contributing

GitHub is a public read-only mirror. Issues are welcome on GitHub, but pull requests opened on GitHub cannot be merged. See CONTRIBUTING.md for accepted contribution paths.

Security

See SECURITY.md.

License

Apache-2.0.