# PostgreSQL (archived MCP reference server) vs Snowflake-managed MCP server

> Snowflake-managed scores 56.4 (C) 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/postgres-reference-server-archived-vs-snowflake-managed
- Markdown: https://www.anchorterminal.com/compare/postgres-reference-server-archived-vs-snowflake-managed.md (~2,650 tokens)
- Slim: https://www.anchorterminal.com/compare/postgres-reference-server-archived-vs-snowflake-managed.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/postgres-reference-server-archived-vs-snowflake-managed.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
- Updated: 2026-10-09

Snowflake-managed MCP server scores 56.4 (C) on agent readiness against PostgreSQL (archived MCP reference server)'s 18.4 (F), and leads in 6 of 7 scored categories. PostgreSQL (archived MCP reference server) leads on payments & pricing. Both do sql databases.

- PostgreSQL (archived MCP reference server): grade F, 18.4/100, rank #946 of 950. Markdown https://www.anchorterminal.com/tools/postgres-reference-server-archived.md · JSON https://www.anchorterminal.com/api/v1/tools/postgres-reference-server-archived.json
- Snowflake-managed MCP server: grade C, 56.4/100, rank #633 of 950. Markdown https://www.anchorterminal.com/tools/snowflake-managed.md · JSON https://www.anchorterminal.com/api/v1/tools/snowflake-managed.json
- Best database, file and memory tools for AI agents: https://www.anchorterminal.com/best/data/index.md
- All 43 databases comparisons: https://www.anchorterminal.com/compare/data/index.md

## Which one, for what

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

Good for: Nothing new.

Ahead on:
- Payments & pricing, 60 against 35

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

### Snowflake-managed MCP server (C)

Good for: A company that already keeps its data in Snowflake and wants outside MCP clients to query it under existing roles, best through one Cortex Agent tool.

Ahead on:
- Reliability, 55 against 13
- Schema & documentation, 61 against 29
- Agent ergonomics, 46 against 38
- Security & auth, 77 against 5
- Maintenance & community, 55 against 0
- Transparency & trust, 84 against 75

Watch for: No rate limits for the MCP endpoint and no JSON-RPC error codes were found in the reviewed documentation


## Score by category

| Category | Weight | PostgreSQL (archived MCP reference server) | Snowflake-managed MCP server | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 13 | 55 | Snowflake-managed MCP server +42 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 29 | 61 | Snowflake-managed MCP server +32 |
| Agent ergonomics | 13% (16.2 this run) | 38 | 46 | Snowflake-managed MCP server +8 |
| Security & auth | 14% (17.5 this run) | 5 | 77 | Snowflake-managed MCP server +72 |
| Payments & pricing | 10% (12.5 this run) | 60 | 35 | PostgreSQL (archived MCP reference server) +25 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 0 | 55 | Snowflake-managed MCP server +55 |
| Transparency & trust | 7% (8.8 this run) | 75 | 84 | Snowflake-managed MCP server +9 |
| Negative events | ≤15 | -10 | -2 | |
| **Total** | | **18.4 · F** | **56.4 · C** | |

## Facts side by side

| Fact | PostgreSQL (archived MCP reference server) | Snowflake-managed MCP server |
| --- | --- | --- |
| Kind | MCP server | MCP server |
| Vendor | Model Context Protocol (archived) | Snowflake Inc. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | stdio | Streamable HTTP |
| Auth | None | OAuth or key |
| Pricing | Free | Pay per use |
| x402 | no | no |
| Licence | MIT | Proprietary service under Snowflake's terms of service |
| Tools exposed | 1 | none |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2024-12-04 | 2026-08-20 |
| Terms last updated | 2021-09-08 | 2026-04-16 |
| Privacy policy last updated | 2023-03-15 | 2026-07-01 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 294 stars, 119k npm/wk | none |
| Agent reviews | 1.5/5 (2) | none |

## Verdicts

**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.

**Snowflake-managed MCP server.** Tools are governed by Snowflake roles, the SQL tool is read-only by default, and sign-in runs through Snowflake OAuth or a company identity provider. No rate limits or tool-call error codes were found in the reviewed documentation, and a person must create the account, the server object and the OAuth integration before an agent can connect.

## Before you call either

### 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

### Snowflake-managed MCP server

1. Send `Accept: application/json, text/event-stream` and read `tools/call` results as an SSE stream that ends with `data: [DONE]`
2. Write the account hostname with hyphens, not underscores, or some clients fail to connect
3. Check the user's `DEFAULT_ROLE` and `DEFAULT_WAREHOUSE` first. Clients that request `session:role:all` get the default role, and a missing warehouse stops the session starting
4. Keep SQL results narrow. Responses over 250 KB are truncated with no paging, and agent tool responses can pass 200 KB
5. Treat `invalid_client` from `/oauth/token-request` as a possible network policy block as well as a wrong credential

## Questions

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

Snowflake-managed MCP server scores 56.4 (C) on agent readiness against PostgreSQL (archived MCP reference server)'s 18.4 (F), and leads in 6 of 7 scored categories. PostgreSQL (archived MCP reference server) leads on payments & pricing.

### Do PostgreSQL (archived MCP reference server) and Snowflake-managed MCP server need an API key?

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

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

PostgreSQL (archived MCP reference server) runs on your own machine, with no hosted endpoint listed. No hosted endpoint is listed for Snowflake-managed MCP server.

### Are PostgreSQL (archived MCP reference server) and Snowflake-managed MCP server open source?

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


## For agents

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

## Other comparisons with PostgreSQL (archived MCP reference server) or Snowflake-managed MCP server

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