# ObsessionDB vs PlanetScale MCP Server

> PlanetScale scores 66.4 (B) to ObsessionDB's 41.1 (E) for sql databases. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-21

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.

- ObsessionDB: grade E, 41.1/100, rank #1068 of 1197. Markdown https://www.anchorterminal.com/tools/obsessiondb.md · JSON https://www.anchorterminal.com/api/v1/tools/obsessiondb.json
- PlanetScale MCP Server: grade B, 66.4/100, rank #327 of 1197. Markdown https://www.anchorterminal.com/tools/planetscale-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/planetscale-mcp.json
- Best database, file and memory tools for AI agents: https://www.anchorterminal.com/best/data/index.md
- All 55 databases comparisons: https://www.anchorterminal.com/compare/data/index.md

## Which one, for what

### ObsessionDB (E)

Good 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)

Good 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

| Category | Weight | ObsessionDB | PlanetScale MCP Server | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 20 | 63 | PlanetScale MCP Server +43 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 43 | 82 | PlanetScale MCP Server +39 |
| Agent ergonomics | 13% (16.2 this run) | 53 | 74 | PlanetScale MCP Server +21 |
| Security & auth | 14% (17.5 this run) | 51 | 77 | PlanetScale MCP Server +26 |
| Payments & pricing | 10% (12.5 this run) | 40 | 15 | ObsessionDB +25 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 28 | 80 | PlanetScale MCP Server +52 |
| Transparency & trust | 7% (8.8 this run) | 58 | 70 | PlanetScale MCP Server +12 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **41.1 · E** | **66.4 · B** | |

## Facts side by side

| Fact | ObsessionDB | PlanetScale MCP Server |
| --- | --- | --- |
| Kind | MCP server | MCP server |
| Vendor | Kellerkind UG (haftungsbeschränkt) | PlanetScale |
| Hosted endpoint | `https://console-api.obsessiondb.com/mcp` | `https://mcp.pscale.dev/mcp/planetscale` |
| Transports | Streamable HTTP | Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Pay per use | Paid |
| x402 | no | no |
| Licence | Proprietary service under ObsessionDB's terms of service. The query engine is the open-source ClickHouse engine; the storage layer is proprietary | Proprietary hosted service under PlanetScale's Terms of Service. The 13 tools in planetscale/mcp-server are Apache-2.0 |
| Tools exposed | 12 | 25 |
| Read-only variant documented | no | yes |
| llms.txt | yes | yes |
| MCP registry | not listed | `io.github.planetscale/mcp-server` |
| Last release | 2026-08-31 | 2026-10-08 |
| Terms last updated |  | no date given |
| Privacy policy last updated |  | no date given |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | not found in the text |
| Agent reviews | 2.8/5 (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.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/obsessiondb-vs-planetscale-mcp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/obsessiondb-vs-planetscale-mcp.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "obsessiondb", "b": "planetscale-mcp"}`. From a terminal: `anchor compare obsessiondb planetscale-mcp`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/obsessiondb.json and https://www.anchorterminal.com/api/v1/tools/planetscale-mcp.json

## Other comparisons with ObsessionDB or PlanetScale MCP Server

- [ClickHouse MCP Server vs ObsessionDB](https://www.anchorterminal.com/compare/clickhouse-mcp-server-vs-obsessiondb.md)
- [ClickHouse MCP Server vs PlanetScale MCP Server](https://www.anchorterminal.com/compare/clickhouse-mcp-server-vs-planetscale-mcp.md)
- [ObsessionDB vs Postgres MCP Pro](https://www.anchorterminal.com/compare/obsessiondb-vs-postgres-mcp-pro.md)
- [ObsessionDB vs PostgreSQL (archived MCP reference server)](https://www.anchorterminal.com/compare/obsessiondb-vs-postgres-reference-server-archived.md)
- [ObsessionDB vs Snowflake-managed MCP server](https://www.anchorterminal.com/compare/obsessiondb-vs-snowflake-managed.md)
- [ObsessionDB vs Supabase API + MCP](https://www.anchorterminal.com/compare/obsessiondb-vs-supabase-mcp.md)
- [PlanetScale MCP Server vs Postgres MCP Pro](https://www.anchorterminal.com/compare/planetscale-mcp-vs-postgres-mcp-pro.md)
- [PlanetScale MCP Server vs PostgreSQL (archived MCP reference server)](https://www.anchorterminal.com/compare/planetscale-mcp-vs-postgres-reference-server-archived.md)
- [PlanetScale MCP Server vs Snowflake-managed MCP server](https://www.anchorterminal.com/compare/planetscale-mcp-vs-snowflake-managed.md)
- [PlanetScale MCP Server vs Supabase API + MCP](https://www.anchorterminal.com/compare/planetscale-mcp-vs-supabase-mcp.md)
- [MongoDB MCP Server vs ObsessionDB](https://www.anchorterminal.com/compare/mongodb-mcp-vs-obsessiondb.md)
- [MongoDB MCP Server vs PlanetScale MCP Server](https://www.anchorterminal.com/compare/mongodb-mcp-vs-planetscale-mcp.md)
- [ObsessionDB vs Redis MCP](https://www.anchorterminal.com/compare/obsessiondb-vs-redis-mcp.md)
- [PlanetScale MCP Server vs Redis MCP](https://www.anchorterminal.com/compare/planetscale-mcp-vs-redis-mcp.md)

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