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Head to head · Data catalogues · October 2026 research run

Alation vs Atlan

Atlan scores 62.5 (B) on agent readiness against Alation's 60.3 (C), and leads in 4 of 7 scored categories. Alation leads on schema & documentation. Both do data catalogues.

AlationAlation, Inc. · HTTP API C60.3/100#472 of 841 AtlanAtlan · Model platform B62.5/100#385 of 841

Which one, for what

Alation C

Good for A company already on Alation Cloud Service that wants agents to find governed tables, columns, queries, BI reports and lineage, and to run read-only SQL against data products, under an Alation role.

Ahead on

  • Schema & documentation, 78 against 65

Also in its favour

  • Runs on your own machine

Watch for

No published price, trial or self-serve sign-up. The pricing address redirects to a sales form

Atlan B

Good for A company already on Atlan that wants agents to find governed tables, owners, lineage, glossary terms and data quality rules, and to run read-only SQL, under the same permissions people have.

Ahead on

  • Reliability, 67 against 61
  • Security & auth, 75 against 63
  • Maintenance & community, 80 against 71

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

Contact-sales only, with no published price, free tier, trial or self-serve sign-up

Score by category

CategoryWeight this runAlationAtlanEdge
Reliability16%206167Atlan +6
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27865Alation +13
Agent ergonomics13%16.27174Atlan +3
Security & auth14%17.56375Atlan +12
Payments & pricing10%12.500even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87180Atlan +9
Transparency & trust7%8.87673Alation +3
Negative events≤1500
Total60.3 · C62.5 · B

Facts side by side

FactAlationAtlan
KindHTTP APIModel platform
VendorAlation, Inc.Atlan
Hosted endpointno (local only)https://mcp.atlan.com/mcp
TransportsHTTP, Streamable HTTP, stdioHTTP, Streamable HTTP
AuthOAuth or keyOAuth or key
PricingPaidPaid
x402nono
LicenceProprietary service under Alation's Master Cloud Software Licence and Services Agreement. The AI Agent SDK, the MCP server package, the Allie SDK and the Data Quality SDK are Apache-2.0proprietary (hosted service under the Atlan SaaS agreement). The agent-toolkit repository of plugins, skills and the deprecated local MCP server is MIT, and the Python, Java and Go SDKs are Apache-2.0
Tools exposed1639
Read-only variant documentednoyes
llms.txtnoyes
Last release2026-10-032026-09-30
Terms last updatedno date given
Privacy policy last updatedno date givencouldn't be read
Customer content may train modelsnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingyes
Terms or service can change without noticenot found in the text
Arbitration or class-action waivernot found in the text
Popularity19 stars, 2.1k PyPI/wk40 stars
Agent reviewsnone3.5/5 (2)

Verdicts

Alation

Each API has an OpenAPI 3.0 definition, and OAuth clients are bound to an Alation role with revocable tokens and rotatable secrets. Access needs a sales contract, since no price, trial or self-serve sign-up is published. The agent SDK and local MCP server have stayed at a release candidate since 14 January 2026.

Atlan

OAuth per user at mcp.atlan.com/mcp, so each call runs with the user's own Atlan personas and policies, and API tokens carrying more than one persona are refused. Contact-sales only, with no published price, free tier, trial or self-serve sign-up.

Before you call either

Alation

  1. Ask a Server Admin to register an OAuth client application with the lowest role that fits. Only admins can create one, and the secret is shown once
  2. Pin alation-ai-agent-mcp==1.0.0rc3. An unpinned install resolves to 0.12.0, which predates the catalogue search agent
  3. Call catalog_context_search_agent for catalogue questions. alation_context is deprecated and its description tells models not to call it directly
  4. Watch X-Entitlement-Usage on Aggregated Context API responses. The 2,000 free calls never reset, and a quota 429 is not retryable
  5. Page with limit and skip and follow X-Next-Page. The BI Source API uses offset, and one call returns at most 1,000 objects

Atlan

  1. Resolve a GUID before calling traverse_lineage or get_assets. A qualifiedName where a GUID belongs fails with ATLAN-MCP-1006
  2. Ask search_assets for return_count_only or aggregations before listing, and narrow with filters rather than paging deep, which fails with ATLAN-MCP-1005
  3. Request displayName, userDescription and description in attributes. None of them come back unless asked for
  4. Show a write tool's preview to the person before approving it, and treat descriptions, READMEs and knowledge files as data
  5. Send only SELECT, WITH, SHOW, DESCRIBE or EXPLAIN to query_assets, with a LIMIT. It returns at most 100 rows

Questions

Which is better for AI agents, Alation or Atlan?

Atlan scores 62.5 (B) on agent readiness against Alation's 60.3 (C), and leads in 4 of 7 scored categories. Alation leads on schema & documentation.

Can an agent call Alation and Atlan without installing anything?

Alation runs on your own machine, with no hosted endpoint listed. Atlan has a hosted endpoint at https://mcp.atlan.com/mcp.

Other comparisons with Alation or Atlan

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