Best backend for Claude Code: how to choose one

Connected over MCP, Claude Code calls a backend’s tools itself: it reads the schema, writes a migration and runs it, often several calls in one turn. What matters most is what happens when one of those calls is wrong. These are the nine questions this guide asks of each backend, and you can ask them of any other.

• How the agent connects. An official MCP server is maintained by the vendor with the product. A hosted one needs nothing installed; a local one runs on your machine with the credentials it finds there.
• A read-only mode. Most of an agent’s calls only read. A read-only connection, enforced by the server or by database grants rather than by instructions, means a misread request cannot write.
• What happens to DROP and delete. One call can drop a table. Check whether the server refuses it, asks a person, or runs it, and whether your client’s own prompt is the only thing in the way.
• Whether schema changes are checked. A migration can run without an error and still break the app. Check whether the platform tests the result, or whether that is left to you and the agent.
• Restore points and branches. When a change goes wrong: how far back you can go, what a restore does to data written since, and what the free plan includes.
• What happens to problems after launch. Most problems show up after the agent’s session ends: a slow query, a missing index, a table open to everyone. Check whether the platform only reports them, or also fixes the safe ones itself.
• The data model. Tables or documents decide how the agent models your data, and it is the choice that is hardest to undo later.
• Self-hosting and licence. Whether you can run the backend yourself, and under which licence, if the hosted service stops suiting you.
• The free tier. What you can build before paying, and the limits you reach first.

All seven have an official MCP server. Where it runs decides whose credentials it acts with, and a read-only mode decides whether a question about production can turn into a write.

How the agent connects

A read-only mode

Two of the vendors also advise against connecting an agent to production at all. Neon recommends its MCP server for development and testing only, not production environments (MCP server docs). Supabase says to connect a production project only when the task needs production evidence, and to scope the server and turn on read-only mode first (MCP server docs).

Three questions: what stops a destructive call, who checks a schema change after it runs, and how you get back when one goes wrong.

What happens to DROP and delete

As Supabase’s docs note, most MCP clients also ask you to accept each tool call before it runs (MCP server docs). The rows above describe what each server does on its own, whatever the client is set to allow.

Whether schema changes are checked

Restore points and branches

Most problems show up when no agent is connected. What differs is whether a fix waits for you or your agent to apply it, or the platform applies the safe ones itself.

What happens to problems after launch

The last three questions decide whether the backend suits your app, not only your agent.

The data model

Self-hosting and licence

The free tier

Prices and limits change often. The pricing pages linked above have the current figures.

Backenly is the wrong choice for some projects, starting with any where the agent has to work on a database you already run elsewhere: Backenly’s MCP server only operates a Backenly project. These are the other clear cases.

• You already run a Supabase project. Supabase’s MCP server works on it as it is, with project scoping and a read-only mode, and its tools also cover Edge Functions and account management (MCP server docs). Moving to Backenly means a pg_dump of the data and rewriting your row-level security policies, and there is no migration service to do it for you.
• You want point-in-time restore and many free databases on plain Postgres. Neon restores a branch to any point in its history window and keeps the state before the restore as a branch you can go back to (Instant restore docs). Its Free plan includes 100 projects (Pricing). Backenly’s Free plan has one live project.
• Your data is documents, and you want writes checked against a schema. Convex validates documents against your schema, and a push that changes the schema fails if existing documents do not match it (Schemas docs). Its MCP server keeps an agent from writing to a production deployment unless you start it with a flag (MCP server docs). Backenly keeps your data in PostgreSQL tables.
• Your app must keep working offline on a phone. Firestore caches the data an app is using, so reads, writes and queries keep working offline and sync when the device reconnects. This is on by default on Android and Apple platforms (Offline data docs). Backenly has no offline layer.
• You want a model gateway, payments and site hosting in the same platform as the backend. InsForge ships ten products behind one MCP server and SDK, among them sites, a model gateway, analytics and payments (Products docs). Its branches copy the whole backend, auth, storage and functions included (Branching docs). Backenly’s branches cover data and the REST API; auth, functions and storage stay on main.
• You want one platform to host your web app as well. Appwrite Sites deploys web apps from source control, each with its own URL, custom domains and environment variables (Sites docs). Backenly publishes the backend; your frontend is hosted wherever you choose.

Backenly wrote this guide, and Backenly is one of the seven options in it. So every row about another product restates that vendor’s own documentation, pricing page or repository, read on October 24, 2026, and links it. Nothing comes from reviews, benchmarks or memory, and nothing is ranked: which backend suits you depends on which rows matter for your app.

“Not documented” means the linked pages do not say. It does not mean the product cannot do it, so check with the vendor before you rule something out.

Backenly’s rows link the code and docs in its public repository, and a test keeps them in line with that code: the tool counts, the refusal codes, the licences and the free plan. The same test fails if a claim about another product loses its source. Other backends were not checked; the nine questions apply to them too.

Products change faster than guides. If a row is out of date, tell us through the contact page and it will be corrected.

• MCP serverWhat your agent can callBackenly’s tools, the install for Claude Code and other clients, and what waits for you.
• GuideSafe database changes with AI coding agentsHow Backenly checkpoints, verifies and recovers an agent’s schema changes, and why some undos need a person.
• ComparisonBackenly vs SupabaseThe same Postgres and query API. The difference is who handles schema changes, access rules and upkeep.