How to Connect PlanetScale to an AI Agent
Auth setup
1. In the PlanetScale console, go to Organization > Service Tokens > New. 2. Grant the token access to specific databases. 3. For data access, create a password under Database > Connect and use the MySQL SRV-like connection string. 4. Enable safe migrations mode before applying schema changes.
Key facts
| Base URL | https://api.planetscale.com/v1/ |
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| API version | v1 |
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| Auth | Service Token authentication (tokens from Organization > Service Tokens), sent in the Authorization header as `Bearer {token_id}:{token_secret}`. Data plane uses MySQL protocol with username/password credentials generated per database. |
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| Scopes | Service tokens are scoped with granular permissions: read/write databases, manage branches, run schema migrations. |
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| Request body | application/json |
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| Pagination | Cursor-based: `page` + `per_page`. Response includes `next_page` and `previous_page` tokens. |
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| Rate limit | Management API: ~100 requests/min per service token. 429 with Retry-After header. Data plane is bound by compute plan (Scaler Pro and above have higher limits). |
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| Error format | JSON: {"code":"...","message":"...","errors":[{"message":"...","field":"..."}]} |
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Key endpoints
| Method | Path | Description |
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GET | /organizations/{org}/databases | List databases in an organization |
POST | /organizations/{org}/databases | Create a new database |
GET | /organizations/{org}/databases/{db}/branches | List branches (schema isolation) |
POST | /organizations/{org}/databases/{db}/deploy-requests | Create a deploy request (schema migration PR) |
POST | /organizations/{org}/databases/{db}/branches/{branch}/passwords | Generate a connection password |
Quickstart
GET https://api.planetscale.com/v1/organizations/{org}/databases
Authorization: {token_id}:{token_secret}
Response: {"data":[{"id":"...","name":"my-db","region":{"slug":"us-east"},"state":"ready"}]}
Agent pitfalls & tips
- Auth header format is unusual: `Authorization: {token_id}:{token_secret}` — NO "Bearer" prefix, just the two parts separated by a colon.
- PlanetScale enforces schema changes via deploy requests (like PRs for databases) — direct ALTER TABLE on main is blocked.
- Branches are free to create and destroy — use them for migration testing and PR previews.
- Connection passwords are single-use tokens — generate a new one per environment and rotate them regularly.
- PlanetScale doesn't support foreign keys in the default mode (Vitess-native sharding reasons) — schema design must account for this.
- For agents doing schema analysis, list branches and generate read-only passwords scoped to a dev branch.
Source: curated by KanseiLink from official documentation (docs) and registry checks. Last reviewed: 2026-04-10. Specs change — verify against the official docs before production use.
Frequently Asked Questions
What is PlanetScale's AEO score?
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PlanetScale has an AEO score of 0.60 and is rated BBB (Basic agent connectivity available). AEO (Agent Engine Optimization) measures how well a SaaS service works with AI agents. Scores range from 0.00 to 1.00, with grades from AAA (best) to D (not agent-ready).
Is PlanetScale AI-agent-ready?
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PlanetScale is currently connectable for AI agent use. API access is available but no dedicated MCP server has been published yet. For detailed connection guides, auth setup, and known pitfalls, use the KanseiLink MCP tool.
How does PlanetScale compare to other Database services?
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In the Database category, PlanetScale is rated BBB. KanseiLink evaluates services based on MCP availability, API quality, documentation, auth-guide clarity, and integration recipe availability (methodology published). Visit the full rankings at kansei-link.com to see how PlanetScale compares.
How can I integrate PlanetScale with an AI agent?
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The fastest way to integrate PlanetScale with an AI agent is through KanseiLink MCP. Install it with: npx @kansei-link/mcp-server — then use the search_services and get_service_detail tools to get the current auth setup, endpoints, rate limits, and agent-specific tips. This data is kept fresh from registry checks, curated official-doc guides, and agent reports.
How do I authenticate with PlanetScale?
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Service Token authentication (tokens from Organization > Service Tokens), sent in the Authorization header as `Bearer {token_id}:{token_secret}`. Data plane uses MySQL protocol with username/password credentials generated per database. Setup: 1. In the PlanetScale console, go to Organization > Service Tokens > New. 2. Grant the token access to specific databases. 3. For data access, create a password under Database > Connect and use the MySQL SRV-like connection string. 4. Enable safe migrations mode before applying schema changes.
What are PlanetScale's API rate limits?
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Management API: ~100 requests/min per service token. 429 with Retry-After header. Data plane is bound by compute plan (Scaler Pro and above have higher limits).