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 **MEOS-API** is the machine-readable description of the [MEOS](https://github.com/MobilityDB/MEOS) C library's public API. It is a JSON catalog — `meos-api.json` — that lists every function, structure, and enum that MEOS exposes, with the type signatures, ownership rules, and documentation strings.
 
-This catalog is the foundation for generating language bindings (Python, Java, Rust, Go, .NET, JavaScript), building documentation, or powering any tooling that needs to understand the MEOS API without re-parsing C headers.
+This catalog is the foundation for generating language bindings (Python, Java, Go, Rust, and .NET/C#), building documentation, or powering any tooling that needs to understand the MEOS API without re-parsing C headers. See [Ecosystem](#ecosystem) for the projects that build on it.
 
 ## Table of contents
 
+- [Ecosystem](#ecosystem)
 - [How it works](#how-it-works)
 - [Getting started](#getting-started)
 - [Output format](#output-format)
 - [Adding metadata](#adding-metadata)
 
+## Ecosystem
+
+MEOS is the common computational substrate of the MobilityDB ecosystem. This
+catalog is the language-independent contract that the projects below consume —
+directly against the MEOS C library or by code-generating from `meos-api.json`.
+The full ecosystem (including visualization and tooling) lives at
+[github.com/MobilityDB](https://github.com/MobilityDB).
+
+### Engine
+
+| Project | Description |
+|---|---|
+| [MEOS](https://github.com/MobilityDB/MEOS) | Mobility Engine Open Source — the core C library this catalog describes |
+| [MobilityDB](https://github.com/MobilityDB/MobilityDB) | PostgreSQL / PostGIS extension for spatiotemporal trajectory data |
+| [MobilityDuck](https://github.com/MobilityDB/MobilityDuck) | DuckDB extension for temporal and spatiotemporal data |
+
+### Language bindings
+
+| Project | Language |
+|---|---|
+| [PyMEOS](https://github.com/MobilityDB/PyMEOS) (via [PyMEOS-CFFI](https://github.com/MobilityDB/PyMEOS-CFFI)) | Python |
+| [JMEOS](https://github.com/MobilityDB/JMEOS) | Java |
+| [GoMEOS](https://github.com/MobilityDB/GoMEOS) | Go |
+| [meos-rs](https://github.com/MobilityDB/meos-rs) | Rust |
+| [MEOS.NET](https://github.com/MobilityDB/MEOS.NET) | .NET / C# |
+| [MEOS.js](https://github.com/MobilityDB/MEOS.js) | JavaScript (WebAssembly / Node.js) |
+
+### Analytics & services
+
+| Project | Description |
+|---|---|
+| [MobilitySpark](https://github.com/MobilityDB/MobilitySpark) | Trajectory data platform on Spark-SQL |
+| [MobilityAPI](https://github.com/MobilityDB/MobilityAPI) | HTTP server implementing the OGC API – Moving Features standard |
+
+### Catalog projections
+
+Beyond binding code-generation, the enriched catalog is projected into
+service contracts generated from the same model:
+
+| Projection | Description |
+|---|---|
+| OpenAPI 3.1 contract | A language-agnostic HTTP contract for the MEOS value algebra |
+| Model Context Protocol (MCP) tool manifest | One MCP tool per stateless-exposable function, so LLMs/agents can call the MEOS spatiotemporal algebra directly |
+| Contract-driven runtime server | An HTTP server with a pluggable MEOS engine, driven by the generated contract |
+
 ## How it works
 
 The pipeline runs in two steps: