# PlanetScale MCP Server vs Snowflake-managed MCP server

> PlanetScale scores 66.4 (B) to Snowflake-managed's 56.4 (C) for sql databases. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/planetscale-mcp-vs-snowflake-managed
- Markdown: https://www.anchorterminal.com/compare/planetscale-mcp-vs-snowflake-managed.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/planetscale-mcp-vs-snowflake-managed.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/planetscale-mcp-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

PlanetScale MCP Server scores 66.4 (B) on agent readiness against Snowflake-managed MCP server's 56.4 (C), and leads in 4 of 7 scored categories. Snowflake-managed MCP server leads on payments & pricing and transparency & trust. Both do sql databases.

- PlanetScale MCP Server: grade B, 66.4/100, rank #292 of 950. Markdown https://www.anchorterminal.com/tools/planetscale-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/planetscale-mcp.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

### 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 55
- Schema & documentation, 82 against 61
- Agent ergonomics, 74 against 46
- Maintenance & community, 80 against 55

Also in its favour:
- A hosted endpoint, with nothing to install

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

### 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:
- Payments & pricing, 35 against 15
- Transparency & trust, 84 against 70

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 | PlanetScale MCP Server | Snowflake-managed MCP server | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 63 | 55 | PlanetScale MCP Server +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 82 | 61 | PlanetScale MCP Server +21 |
| Agent ergonomics | 13% (16.2 this run) | 74 | 46 | PlanetScale MCP Server +28 |
| Security & auth | 14% (17.5 this run) | 77 | 77 | even |
| Payments & pricing | 10% (12.5 this run) | 15 | 35 | Snowflake-managed MCP server +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 80 | 55 | PlanetScale MCP Server +25 |
| Transparency & trust | 7% (8.8 this run) | 70 | 84 | Snowflake-managed MCP server +14 |
| Negative events | ≤15 | 0 | -2 | |
| **Total** | | **66.4 · B** | **56.4 · C** | |

## Facts side by side

| Fact | PlanetScale MCP Server | Snowflake-managed MCP server |
| --- | --- | --- |
| Kind | MCP server | MCP server |
| Vendor | PlanetScale | Snowflake Inc. |
| Hosted endpoint | `https://mcp.pscale.dev/mcp/planetscale` | no (local only) |
| Transports | Streamable HTTP | Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Pay per use |
| x402 | no | no |
| Licence | Proprietary hosted service under PlanetScale's Terms of Service. The 13 tools in planetscale/mcp-server are Apache-2.0 | Proprietary service under Snowflake's terms of service |
| Tools exposed | 25 | none |
| Read-only variant documented | yes | yes |
| llms.txt | yes | yes |
| MCP registry | `io.github.planetscale/mcp-server` | not listed |
| Last release | 2026-10-08 | 2026-08-20 |
| Terms last updated | no date given | 2026-04-16 |
| Privacy policy last updated | no date given | 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 |

## Verdicts

**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.

**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

### 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

### 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, PlanetScale MCP Server or Snowflake-managed MCP server?

PlanetScale MCP Server scores 66.4 (B) on agent readiness against Snowflake-managed MCP server's 56.4 (C), and leads in 4 of 7 scored categories. Snowflake-managed MCP server leads on payments & pricing and transparency & trust.

### Do PlanetScale MCP Server and Snowflake-managed MCP server need an API key?

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

### Can an agent call PlanetScale MCP Server and Snowflake-managed MCP server without installing anything?

PlanetScale MCP Server has a hosted endpoint at https://mcp.pscale.dev/mcp/planetscale. No hosted endpoint is listed for Snowflake-managed MCP server.


## For agents

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

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