Likerts MCP server

Likerts

Likerts is a free, open-source backend for surveys embedded in your own web and mobile products. It provides one typed platform through HTTP, MCP and a Rust CLI, with SDKs for Web, React Native, iOS, Android and Flutter.

Download the community release · Installation guide · Contribute

Likerts does not host respondent links or send invitations. Your application decides when a survey appears and supplies the customer context. Likerts validates the published schema, stores the response, returns an idempotent receipt and makes the data available through scoped reads, exports and signed callbacks.

There are no response credits, paid plans, license keys or application-level response quotas. Accepted-response counts are observability data only. Operators still configure request rates, payload bounds, storage capacity and concurrency to protect their infrastructure.

What is included

• Nine question types: single choice, multiple choice, scale, text, number, date, ranking, matrix and constant sum
• NPS and yes/no presets, conditional visibility, pages and branching
• Immutable published survey versions and collection credentials
• PostgreSQL row-level security for workspace isolation
• Scoped service credentials and OAuth grants
• Stable response pagination, privacy-safe aggregates and chart-ready analysis
• Bounded exports, retention and erasure
• Signed response webhooks
• API, MCP and CLI operation parity
• Five client SDKs with encrypted offline queue adapters

Try a real embedded survey

Clone the repository, then run:

git clone https://github.com/crosstabs/likerts.git
cd likerts
bash scripts/run-feedback-demo.sh

Open http://127.0.0.1:4310. Answer the survey, then retrieve the matching response and metadata in the operator view. The example uses the real Web SDK, Rust API and CLI. It requires Rust stable, Node.js 22+ and Bash; temporary memory storage clears when you stop it.

Watch the 40-second walkthrough · Example source and instructions · Versioned downloads and installation

Install in your application

npm install @likerts/web
# For a React Native application:
npm install @likerts/react-native
# For a local MCP client:
npm install --global @likerts/mcp

These are client packages; connect them to your Likerts API using the SDK guides or MCP setup. Runnable Next.js, Vue and Svelte hosts demonstrate explicit mounting, cleanup and safe retry of an ambiguous submission. See the installation guide for versions, compatibility and native SDK source.

Follow the tested checkout feedback walkthrough to attach metadata and retrieve a real receipt, or the MCP lifecycle walkthrough to create, publish and manage a survey with scoped tools.

Run with durable local storage

With Docker Compose and OpenSSL installed:

bash infrastructure/local/compose.sh up --build --detach --wait
curl --fail http://127.0.0.1:8080/health

Shortened. The full README is on GitHub.