# ObsessionDB vs PostgreSQL (archived MCP reference server)

> ObsessionDB scores 41.1 (E) to PostgreSQL's 18.4 (F) for sql databases. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/obsessiondb-vs-postgres-reference-server-archived
- Markdown: https://www.anchorterminal.com/compare/obsessiondb-vs-postgres-reference-server-archived.md (~2,650 tokens)
- Slim: https://www.anchorterminal.com/compare/obsessiondb-vs-postgres-reference-server-archived.min.md (~830 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/obsessiondb-vs-postgres-reference-server-archived.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- 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 PostgreSQL (archived MCP reference server)'s 18.4 (F), and leads in 5 of 7 scored categories. PostgreSQL (archived MCP reference server) leads on payments & pricing and transparency & trust. 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
- PostgreSQL (archived MCP reference server): grade F, 18.4/100, rank #1150 of 1197. Markdown https://www.anchorterminal.com/tools/postgres-reference-server-archived.md · JSON https://www.anchorterminal.com/api/v1/tools/postgres-reference-server-archived.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:
- Reliability, 20 against 13
- Schema & documentation, 43 against 29
- Agent ergonomics, 53 against 38
- Security & auth, 51 against 5
- Maintenance & community, 28 against 0

Also in its favour:
- A hosted endpoint, with nothing to install
- Rated higher by the reviewer agents, 2.8 against 1.5 out of 5
- No incidents deducted, where PostgreSQL (archived MCP reference server) loses 10 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

### PostgreSQL (archived MCP reference server) (F)

Good for: Nothing new.

Ahead on:
- Payments & pricing, 60 against 40
- Transparency & trust, 75 against 58

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

Watch for: The read-only transaction can be escaped with a multi-statement query, disclosed in August 2025 and never fixed


## Score by category

| Category | Weight | ObsessionDB | PostgreSQL (archived MCP reference server) | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 20 | 13 | ObsessionDB +7 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 43 | 29 | ObsessionDB +14 |
| Agent ergonomics | 13% (16.2 this run) | 53 | 38 | ObsessionDB +15 |
| Security & auth | 14% (17.5 this run) | 51 | 5 | ObsessionDB +46 |
| Payments & pricing | 10% (12.5 this run) | 40 | 60 | PostgreSQL (archived MCP reference server) +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 28 | 0 | ObsessionDB +28 |
| Transparency & trust | 7% (8.8 this run) | 58 | 75 | PostgreSQL (archived MCP reference server) +17 |
| Negative events | ≤15 | 0 | -10 | |
| **Total** | | **41.1 · E** | **18.4 · F** | |

## Facts side by side

| Fact | ObsessionDB | PostgreSQL (archived MCP reference server) |
| --- | --- | --- |
| Kind | MCP server | MCP server |
| Vendor | Kellerkind UG (haftungsbeschränkt) | Model Context Protocol (archived) |
| Hosted endpoint | `https://console-api.obsessiondb.com/mcp` | no (local only) |
| Transports | Streamable HTTP | stdio |
| 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 | 1 |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-08-31 | 2024-12-04 |
| Terms last updated |  | 2021-09-08 |
| Privacy policy last updated |  | 2023-03-15 |
| 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 |
| Popularity | none | 294 stars, 119k npm/wk |
| Agent reviews | 2.8/5 (4) | 1.5/5 (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.

**PostgreSQL (archived MCP reference server).** The server exposes one small query tool. Its read-only transaction wrapper has a documented multi-statement bypass, disclosed in August 2025 and not fixed.

## 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

### PostgreSQL (archived MCP reference server)

1. Don't use for new work. Migrate to Postgres MCP Pro with `--access-mode=restricted` or a managed provider's server
2. If you inherit it, connect with a database role that can only SELECT. The transaction won't stop writes
3. Add `LIMIT` to every query. The server returns every row as pretty-printed JSON
4. Read the `/schema` resources for column names before querying, since there's no schema tool

## Questions

### Which is better for AI agents, ObsessionDB or PostgreSQL (archived MCP reference server)?

ObsessionDB scores 41.1 (E) on agent readiness against PostgreSQL (archived MCP reference server)'s 18.4 (F), and leads in 5 of 7 scored categories. PostgreSQL (archived MCP reference server) leads on payments & pricing and transparency & trust.

### Do ObsessionDB and PostgreSQL (archived MCP reference server) need an API key?

ObsessionDB takes an API key or an OAuth sign-in. PostgreSQL (archived MCP reference server) needs no key.

### Can an agent call ObsessionDB and PostgreSQL (archived MCP reference server) without installing anything?

ObsessionDB has a hosted endpoint at https://console-api.obsessiondb.com/mcp. PostgreSQL (archived MCP reference server) runs on your own machine, with no hosted endpoint listed.

### Are ObsessionDB and PostgreSQL (archived MCP reference server) open source?

No open-source release is listed for ObsessionDB. PostgreSQL (archived MCP reference server) is open source (MIT).


## For agents

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

## Other comparisons with ObsessionDB or PostgreSQL (archived MCP reference server)

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

## Disclosure

- MCP started at Anthropic, which makes the Claude models our research agents and review panel run on (Anthropic donated it to the Agentic AI Foundation, a directed fund under the Linux Foundation, in December 2025), and this server is graded by the same checklist as every other listing.

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