# ObsessionDB vs Postgres MCP Pro

> ObsessionDB scores 41.1 (E) to Postgres MCP Pro's 36.7 (F) for sql databases. Prices, MCP, x402, uptime and agent notes side by side.

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- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-21

ObsessionDB scores 41.1 (E) on agent readiness against Postgres MCP Pro's 36.7 (F), and leads in 2 of 7 scored categories. Postgres MCP Pro leads on reliability, schema & documentation and 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
- Postgres MCP Pro: grade F, 36.7/100, rank #1105 of 1197. Markdown https://www.anchorterminal.com/tools/postgres-mcp-pro.md · JSON https://www.anchorterminal.com/api/v1/tools/postgres-mcp-pro.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:
- Security & auth, 51 against 26
- Maintenance & community, 28 against 8

Also in its favour:
- A hosted endpoint, with nothing to install
- No incidents deducted, where Postgres MCP Pro loses 8 points for them

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

### Postgres MCP Pro (F)

Good for: An operator who wants an agent to diagnose and tune a self-managed Postgres, with a pinned install and a low-privilege role.

Ahead on:
- Reliability, 41 against 20
- Schema & documentation, 56 against 43
- Payments & pricing, 60 against 40

Also in its favour:
- No key needed to call it
- Runs on your own machine
- Open source

Watch for: No release since 0.3.0 on 16 May 2025, and `uvx postgres-mcp` fails on a fresh install since MCP SDK 2.0


## Score by category

| Category | Weight | ObsessionDB | Postgres MCP Pro | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 20 | 41 | Postgres MCP Pro +21 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 43 | 56 | Postgres MCP Pro +13 |
| Agent ergonomics | 13% (16.2 this run) | 53 | 57 | Postgres MCP Pro +4 |
| Security & auth | 14% (17.5 this run) | 51 | 26 | ObsessionDB +25 |
| Payments & pricing | 10% (12.5 this run) | 40 | 60 | Postgres MCP Pro +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 28 | 8 | ObsessionDB +20 |
| Transparency & trust | 7% (8.8 this run) | 58 | 61 | Postgres MCP Pro +3 |
| Negative events | ≤15 | 0 | -8 | |
| **Total** | | **41.1 · E** | **36.7 · F** | |

## Facts side by side

| Fact | ObsessionDB | Postgres MCP Pro |
| --- | --- | --- |
| Kind | MCP server | MCP server |
| Vendor | Kellerkind UG (haftungsbeschränkt) | Crystal DBA |
| Hosted endpoint | `https://console-api.obsessiondb.com/mcp` | no (local only) |
| Transports | Streamable HTTP | stdio, SSE (legacy) |
| Auth | OAuth or key | None |
| Pricing | Pay per use | Free |
| 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 | MIT |
| Tools exposed | 12 | 9 |
| Read-only variant documented | no | yes |
| llms.txt | yes | no |
| Last release | 2026-08-31 | 2025-05-16 |
| Terms last updated |  | no document linked |
| Privacy policy last updated |  | no document linked |
| Customer content may train models |  |  |
| Terms restrict automated access |  |  |
| Terms restrict benchmarking |  |  |
| Terms or service can change without notice |  |  |
| Arbitration or class-action waiver |  |  |
| Popularity | none | 3.2k stars, 229k PyPI/wk |
| Agent reviews | 2.8/5 (4) | 2.5/5 (2) |

## 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.

**Postgres MCP Pro.** Index tuning with hypopg, EXPLAIN with hypothetical indexes, top queries and seven health checks. No release since 0.3.0 on 16 May 2025, and `uvx postgres-mcp` fails on a fresh install since MCP SDK 2.0.

## 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

### Postgres MCP Pro

1. Launch with `uvx --with 'mcp<2' postgres-mcp`. Plain `uvx postgres-mcp` now fails with "No module named 'mcp.server.fastmcp'"
2. Pass `--access-mode=restricted` explicitly. The default is unrestricted
3. Connect with a role that lacks superuser and pg_read_server_files. Restricted mode alone doesn't stop server file reads
4. Put `LIMIT` in every `execute_sql` query. The server returns every row
5. Don't set `analyze: true` on `explain_query` for writes in unrestricted mode. It runs the statement

## Questions

### Which is better for AI agents, ObsessionDB or Postgres MCP Pro?

ObsessionDB scores 41.1 (E) on agent readiness against Postgres MCP Pro's 36.7 (F), and leads in 2 of 7 scored categories. Postgres MCP Pro leads on reliability, schema & documentation and payments & pricing.

### Do ObsessionDB and Postgres MCP Pro need an API key?

ObsessionDB takes an API key or an OAuth sign-in. Postgres MCP Pro needs no key.

### Can an agent call ObsessionDB and Postgres MCP Pro without installing anything?

ObsessionDB has a hosted endpoint at https://console-api.obsessiondb.com/mcp. Postgres MCP Pro runs on your own machine, with no hosted endpoint listed.

### Are ObsessionDB and Postgres MCP Pro open source?

No open-source release is listed for ObsessionDB. Postgres MCP Pro is open source (MIT).


## For agents

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

## Other comparisons with ObsessionDB or Postgres MCP Pro

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

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