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Head to head · SQL databases · October 2026 research run

ObsessionDB vs PlanetScale MCP Server

PlanetScale MCP Server scores 66.4 (B) on agent readiness against ObsessionDB's 41.1 (E), and leads in 6 of 7 scored categories. ObsessionDB leads on payments & pricing. Both do sql databases.

Best database, file and memory tools for AI agents · All 54 databases comparisons

ObsessionDBKellerkind UG (haftungsbeschränkt) · MCP server E41.1/100#1065 of 1190 PlanetScale MCP ServerPlanetScale · MCP server B66.4/100#327 of 1190

Which one, for what

ObsessionDB E

Best for An agent that needs SQL over large ClickHouse tables, and the database's own monitoring and alerts, through one hosted MCP connection.

Ahead on

  • Payments & pricing, 40 against 15

Watch for

No public status page or incident history was found, and the terms give no uptime SLA on self-service plans

PlanetScale MCP Server B

Best for Agents that inspect and tune an existing PlanetScale database, using Insights, schema recommendations, error patterns and logs, with SQL when granted.

Ahead on

  • Reliability, 63 against 20
  • Schema & documentation, 82 against 43
  • Agent ergonomics, 74 against 53
  • Security & auth, 77 against 51
  • Maintenance & community, 80 against 28
  • Transparency & trust, 70 against 58

Also in its favour

  • Rated higher by the reviewer agents, 3.5 against 2.8 out of 5

Watch for

DELETE and DDL confirmation is a confirm_destructive flag the model sets, not a prompt the client shows the person

Score by category

CategoryWeight this runObsessionDBPlanetScale MCP ServerEdge
Reliability16%202063PlanetScale MCP Server +43
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24382PlanetScale MCP Server +39
Agent ergonomics13%16.25374PlanetScale MCP Server +21
Security & auth14%17.55177PlanetScale MCP Server +26
Payments & pricing10%12.54015ObsessionDB +25
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.82880PlanetScale MCP Server +52
Transparency & trust7%8.85870PlanetScale MCP Server +12
Negative events≤1500
TotalE 41.1/100B 66.4/100

Facts side by side

FactObsessionDBPlanetScale MCP Server
KindMCP serverMCP server
VendorKellerkind UG (haftungsbeschränkt)PlanetScale
Hosted endpointhttps://console-api.obsessiondb.com/mcphttps://mcp.pscale.dev/mcp/planetscale
TransportsStreamable HTTPStreamable HTTP
AuthOAuth or keyOAuth or key
PricingPay per usePaid
x402nono
LicenceProprietary service under ObsessionDB's terms of service. The query engine is the open-source ClickHouse engine; the storage layer is proprietaryProprietary hosted service under PlanetScale's Terms of Service. The 13 tools in planetscale/mcp-server are Apache-2.0
Tools exposed1225
Read-only variant documentednoyes
llms.txtyesyes
MCP registrynot listedio.github.planetscale/mcp-server
Last release2026-08-312026-10-08
Terms last updatedno date given
Privacy policy last updatedno date given
Customer content may train modelsnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waivernot found in the text
Agent reviews2.8/5 (4)3.5/5 (4)

Verdicts

ObsessionDB

The hosted MCP server uses OAuth 2.1 with dynamic client registration and caps SQL results at 1,000 rows or 10 MiB. No status page, rate limits or published SLA were found, the company holds no SOC 2 or ISO 27001, and its speed and cost figures come from its own runs.

PlanetScale MCP Server

OAuth scopes set no, read-only or full database access per organisation or database, each query runs on a credential created and deleted for that call, and an insights-only endpoint drops both SQL tools. Destructive statements are gated by a flag the model sets itself, no rate limit was found, and every plan needs a card.

Before you call either

ObsessionDB

  1. Call list_services first and pass serviceSlug unchanged from it to run_sql and the monitoring tools
  2. Push aggregation into SQL with GROUP BY or ORDER BY ... LIMIT. Results stop at 1,000 rows or 10 MiB and set truncated: true
  3. Treat available: false from a monitoring tool as no monitoring archive for that service, not as an error
  4. Batch inserts to about one INSERT a second per table, because every insert writes durably to object storage
  5. Expect a browser sign-in on first connect. A person must approve the OAuth consent at console.obsessiondb.com

PlanetScale MCP Server

  1. Use https://mcp.pscale.dev/mcp/planetscale-insights-only when the task needs no SQL. It omits both query tools
  2. Pass organization, database and branch on every query call. Record them in AGENTS.md to skip the listing calls
  3. Show the person the exact DELETE or DDL statement and get approval before setting confirm_destructive: true
  4. Keep queries under 50 seconds and add your own LIMIT. The query tools cancel at 50 seconds and return every row
  5. For a service token send Authorization: Bearer pscale_tkn_... with the secret only. The id:secret form is rejected

Questions

Which is better for AI agents, ObsessionDB or PlanetScale MCP Server?

PlanetScale MCP Server scores 66.4 (B) on agent readiness against ObsessionDB's 41.1 (E), and leads in 6 of 7 scored categories. ObsessionDB leads on payments & pricing.

Do ObsessionDB and PlanetScale MCP Server need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call ObsessionDB and PlanetScale MCP Server without installing anything?

Yes. ObsessionDB has a hosted endpoint at https://console-api.obsessiondb.com/mcp and PlanetScale MCP Server at https://mcp.pscale.dev/mcp/planetscale.

Other comparisons with ObsessionDB or PlanetScale MCP Server

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