Mcp Server Alation Metadata

An Alation MCP server authenticates via refresh token, exposes the Alation REST API through agent-friendly tools, and respects the catalog's trust flags (Endorsed, Warning, Deprecated) when returning results. Alation's deep trust-signaling model is the reason it often wins in enterprises, and MCP can carry those signals directly to the agent.

Alation was the first widely deployed enterprise data catalog, and it has evolved into a governance-rich platform with strong trust and stewardship features. Exposing Alation through MCP gives agents access to curated knowledge, with trust flags that help the agent choose the right asset. This guide covers the setup.

Trust Flags Are the Point

Alation's biggest differentiator is the trust flag system: every asset can be marked Endorsed (curated and trusted), Warning (known issues), or Deprecated (do not use). When an agent is searching for the right table for revenue analysis, those flags are enormously valuable — they tell the agent which table the data team actually recommends.

Most MCP servers ignore trust flags because they do not exist in the underlying catalog. An Alation MCP server should surface them prominently in every tool response so the agent factors them into its recommendations. A Deprecated table should rank lower than an Endorsed one every time.

Refresh Token Authentication

Alation's API uses refresh tokens generated in the user profile. Create a dedicated service user, generate a refresh token with read-only scope, and load it into the MCP server. The server exchanges the refresh token for short-lived access tokens on startup and when they expire.

• •Service user — no human login
• •Refresh token — in secrets manager
• •Read-only scope — no edits or approvals
• •Base URL — your Alation instance
• •HTTPS required — TLS to the API

Core MCP Tools

Expose five tools: searchAssets, getTable, getColumn, getBusinessTerm, and getTrustFlags. The last tool is unique — it returns all trust flags for an asset so the agent can explain why a table is endorsed or deprecated. The other tools should include trust flags in their responses too so the agent sees them without an extra call.

Curated Queries as Agent Hints

Alation also curates SQL queries — analysts and stewards save the canonical ways to answer common questions, and Alation shows them to users browsing a table. MCP can expose these curated queries via getQueries, which lets the agent learn the approved way to query a table instead of inventing its own. This is a powerful pattern for cutting hallucinations.

Stewardship and Contact Info

Every Alation asset has a steward — the human expert who curates it. MCP tool responses should include the steward's name and contact info so the agent can point the user at the right person when it cannot answer a question. This closes the loop between AI and human subject matter experts.

Data Workers on Alation

Data Workers' Alation connector handles refresh token auth, surfaces trust flags in every response, and exposes curated queries as an agent-consumable tool. The catalog agent factors trust flags into ranking so deprecated tables never appear first. See AI for data infrastructure or compare to MCP server Atlan metadata.

To see an Alation MCP server surfacing trust flags and curated queries to agents, book a demo. We will walk through token auth, search ranking, and steward routing.

Alation Compose queries are a differentiated feature that MCP can carry directly to agents. Compose lets users write SQL inside Alation with autocomplete, linting, and execution, and the resulting queries are indexed along with the catalog. An MCP tool that exposes Compose history lets the agent learn from what humans actually queried — a form of supervised training that requires no extra curation.

The platform's article feature is also worth exposing. Articles are long-form narrative descriptions of data domains, processes, and business concepts that live alongside the catalog. An MCP tool that returns articles lets the agent answer conceptual questions with a curated human answer instead of generating one. For domains with deep institutional knowledge (finance, healthcare, government), articles are often richer than any schema.

Alation's steward network is another asset MCP can leverage. Every data domain has a steward who is the designated expert, and the catalog tracks this network. An MCP tool that returns the steward for a question topic lets the agent loop humans in when it cannot answer itself. You asked about revenue recognition — the steward for this area is Jane Smith, finance data team is a far more useful response than an unverified LLM guess.

Alation's trust and stewardship model is tailor-made for agents that need to choose between similar assets. MCP lets the agent read those signals directly, which turns a catalog investment into immediate agent quality improvements.