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fabric-dw MCP Server

MCP server for Microsoft Fabric Data Warehouses and SQL Analytics Endpoints

Publisher claimed. No tool list reported, and Pod has not connected to this server.

Status

Pod has not dialled fabric-dw yet, so everything on this page is what its publisher reported rather than what we observed. Registries describe servers; they do not connect to them. Until a check runs, treat the tool list below as a claim.

Connect

Published as ghcr.io/sdebruyn/fabric-dw:2026.8.0 on oci. Runs locally.

Known issues

352 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 12.

Most discussed

feat(observability): add opt-out telemetry (OpenTelemetry traces + metrics)

Goal

Add opt-out, anonymous, privacy-respecting usage telemetry to the CLI and MCP server so the project maintainers can understand how the tool is actually used — which commands are run, what errors occur, and where. Telemetry is enabled by default but must be trivially disable-able.

This is not about local observability (traces, spans, metrics for the operator's own infrastructure) — that is a separate concern. This issue is strictly about project-level usage telemetry sent fr

Read the thread · 2026-06-15 · closed · 5 comments

feat(permissions): dynamic data masking (column masks + UNMASK), depends on #916

DESIGN ONLY. Depends on #916 (the permissions group, for the UNMASK permission). Do not implement until #916 has shipped and this design is approved.

Summary

Dynamic data masking (DDM) in Fabric has two parts: (1) managing the mask on a column via ALTER TABLE ... ALTER COLUMN ... ADD/DROP MASKED, and (2) the UNMASK permission that lets a principal see unmasked values (reuses the #916 permissions sql plane). Supported on Warehouse and SQL analytics endpoint.

Docs: https://learn.mi

Read the thread · 2026-06-29 · closed · 3 comments

feat(permissions): row-level security (security policies + predicates), depends on #916

DESIGN ONLY. Depends on #916 (the permissions group). Do not implement until #916 has shipped and this design is approved.

Summary

Row-level security (RLS) in Fabric restricts which rows a principal can read/write via a SECURITY POLICY that attaches filter and/or block predicates (inline table-valued functions) to a table. This is a NEW surface that manages the POLICY lifecycle and references an EXISTING predicate function; it does NOT author the predicate function body (that is a user-

Read the thread · 2026-06-29 · closed · 3 comments

feat(permissions): column-level security (column-scoped GRANT/DENY), extends #916

DESIGN ONLY. Depends on #916 (the permissions sql plane). Do not implement until #916 has shipped and this design is approved.

Summary

Column-level security (CLS) in Fabric is implemented entirely through column-scoped object permissions: GRANT / DENY / REVOKE of SELECT (and a few other permissions) on a comma-delimited column list of a table. There is no separate CLS object; it is a thin extension of the #916 permissions sql commands, not a new group.

Docs: https://learn.mic

Read the thread · 2026-06-29 · closed · 3 comments

feat(permissions)!: new 'permissions' group for T-SQL granular permissions + relocate Fabric item-level permissions

DESIGN ONLY. This issue proposes the command/tool structure for review. No implementation should start until the maintainer approves the design (and the open questions at the bottom are decided).

Goal

Add a new top-level permissions command group that gives full CRUD over T-SQL granular (in-database) permissions on all warehouse securables (database, schema, table, view, function, procedure) via GRANT / REVOKE / DENY, plus reads of the current grants. Relocate the existing **F

Read the thread · 2026-06-29 · closed · 3 comments

Most recent

refactor: remove all product telemetry and unwind telemetry-driven architecture

Decision

Remove product usage telemetry from fabric-dw completely.

This is a removal, not a default-off switch, dormant implementation, reduced event set, exporter swap, or abstraction kept for possible future reuse. The usage snapshot has already answered the useful directional questions: the project has real external use, SQL execution is the dominant workflow, and discovery/error UX is the useful product follow-up. The ongoing code, dependency, privacy, review, and runtime cost is not

Read the thread · 2026-08-25 · closed · 0 comments

docs: move protocol and transport detail off the README and install page

Problem

The README and docs/install.md carry protocol and transport detail that belongs neither on a landing page nor in an installation guide. Both sections were added with the SDK v2 migration (#1043) and describe things almost no reader needs.

The 4 MiB body limit

The same paragraph now exists in four places:

  • README.md:186
  • docs/install.md:481
  • docs/reference/hosting-mcp-server.md:20
  • docs/troubleshooting.md:189 (as a proper symptom-first entry, which is the right sh

Read the thread · 2026-08-25 · closed · 0 comments

security(telemetry): undocumented hourly control-plane poll from the Azure exporter

What happens

BaseExporter.__init__ in azure-monitor-opentelemetry-exporter starts a ConfigurationWorker daemon thread that polls

https://settings.sdk.monitor.azure.com/AzMonSDKDynamicConfigurationChanges

roughly hourly, sending the operating system, rp, attach, component, version, region and the instrumentation key. It also acts as a remote kill switch for the exporter's offline storage.

This is shared by the log exporter, so it is live on main today. It does not come

Read the thread · 2026-08-24 · closed · 1 comment

chore(telemetry): clean up the loose ends from the #1051 review

Context

Review of #1051 surfaced a set of small items that were deliberately kept out of that PR to keep the fix round focused. None is a defect that matters on its own; together they are worth one pass.

1. Losing the provider race now builds and discards a real Azure exporter

install_mcp_span_pipeline was changed to build the exporter and processor before claiming the global provider, which was the right fix for the ordering bug. The side effect is that an embedded-host process, wher

Read the thread · 2026-08-24 · closed · 1 comment

feat(telemetry): collect MCP protocol spans from the SDK

What

Collect the MCP SDK's OpenTelemetry protocol spans into the project's Application Insights, stripping request-supplied free-text values on the way out.

Why this is the cheap option

The SDK already produces this instrumentation. It covers every protocol message, it is maintained upstream, and it keeps covering new message types as the protocol evolves without anyone here remembering to add a field. Hand-rolled telemetry is the opposite: every new thing worth measuring is a code chan

Read the thread · 2026-08-24 · closed · 0 comments

security(mcp): non-loopback binds lose Host and Origin validation under SDK v2

What changes

Under the MCP SDK v2 migration (#1043 / PR #1045), a server started with a non-loopback host loses Host and Origin validation entirely. The default loopback path is unaffected.

This is not a change anyone made deliberately. It falls out of where the two SDK versions compute the setting.

v1: FastMCP.__init__ derived transport_security from the constructor's host argument, which this project never passed, so it defaulted to 127.0.0.1 and froze a loopback-only allow

Read the thread · 2026-08-24 · closed · 0 comments

chore(deps)!: migrate to MCP Python SDK v2

Summary

Migrate from MCP Python SDK 1.28.1 to 2.0.0. This is a real migration, not a version bump: the module tree mcp.server.fastmcp does not exist in v2. There is no alias, no shim and no deprecation period, so every module importing it fails at import time. That is why the dependabot PR #1039, which only widens the constraint to <3, fails Type check, Unit tests, Runtime smoke and Slow tests at once. #1039 is closed in favour of this.

#1042 has landed (cacc7b8). The shared test help

Read the thread · 2026-08-23 · closed · 0 comments

See all 23 reports Pod holds for fabric-dw — of 352 qualified upstream.

Firsthand observations

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For agents

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