GeoLens MCP Server

GeoLens

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Turn scattered GIS files into a searchable catalog and shareable maps—on your own infrastructure.

GeoLens brings files, database tables, service snapshots, and remote assets into one spatial catalog you control. Search metadata, preview data, and keep every dataset’s origin visible. Build maps in the browser, publish links or embeds, and keep using QGIS and open standards alongside your team’s existing tools.

<p align="center"> <a href="https://demo.getgeolens.com"><img src="https://img.shields.io/badge/%E2%96%B6%20Try%20the%20live%20demo-demo.getgeolens.com-2563eb?style=for-the-badge" alt="Try the live demo" /></a> <br /> _{No install required. Browse the sample catalog and maps without an account, or sign in with Google, GitHub, or Microsoft to try the map builder. Demo data may be wiped at any time.} </p> <p align="center"> <a href="https://demo.getgeolens.com/maps"><img src=".github/assets/geolens-manhattan-3d-hero.jpg" alt="GeoLens map builder with Manhattan building footprints extruded into a 3D skyline, colored by construction era, with the subway and the drag-orderable layer stack beside the map" width="900" /></a> <br /> <em>The map builder: every Manhattan building extruded to its true roof height and colored by the era it was built, the subway threading beneath, built from open data with <code>scripts/seed-showcase.py</code></em> </p>

What you can do

• Find datasets: search one catalog across file uploads, database tables, and imported service snapshots.
• Build and share maps: compose multi-layer maps in the browser, then publish a link or embed them where people work.
• Use your existing tools: connect QGIS, ArcGIS, MapLibre, and scripts through OGC/STAC APIs and direct tile URLs.

git clone https://github.com/geolens-io/geolens.git && cd geolens
bash scripts/install.sh   # read it first: it writes .env, generates secrets, runs docker compose up -d
# Open http://localhost:8080, then log in with the credentials you chose

Or the one-line form, which runs the same script and pulls the prebuilt images:

curl -fsSL https://getgeolens.com/install.sh | sh

Images are published for linux/amd64 and linux/arm64. A fresh install runs six containers at about 1.3 GB resident.

Privacy, outbound connections, and data sources

GeoLens has no telemetry and phones home to nothing, except default basemap tiles from tiles.openfreemap.org until an administrator configures another provider. Features you opt into can make outbound calls: AI assist to your chosen OpenAI-compatible endpoint or Anthropic key, OAuth/OIDC sign-in, SMTP, remote or S3 data sources, and off-site backups.

Upload files, create datasets in the browser, or register tables already in GeoLens’s own PostGIS database without copying them. WFS, ArcGIS FeatureServer, and OGC API Features imports create one-shot copies; remote STAC assets remain live references. GeoLens records each dataset’s origin, indexes catalog metadata with pg_trgm for fuzzy search, and can add pgvector semantic ranking after you configure an embedding provider and enable semantic search.

[!NOTE] API stability. The standards surfaces (OGC API Features/Records, STAC, and the tile endpoints) track their specifications and are safe to build against. GeoLens's own REST API can still change between minor releases: contract changes are listed in the CHANGELOG, and breaking ones keep the old form working for at least one more minor release. Hit a rough edge? Open an issue.

Documentation

Full user, admin, and API documentation lives at docs.getgeolens.com. The Reference table below links each guide.

Published artifacts

GeoLens is published through the standard package registries:

pip install geolens          # Python SDK
pip install geolens-cli      # CLI; installs the `geolens` command
pip install geolens-mcp      # MCP server for coding agents (read-only)
npm install @geolens/sdk     # TypeScript/JavaScript SDK

Prebuilt public API and frontend images are published to GitHub Container Registry:

docker pull ghcr.io/geolens-io/geolens-api:latest
docker pull ghcr.io/geolens-io/geolens-frontend:latest

The latest tag tracks the newest published stable release.

Why GeoLens?

Spatial data ends up scattered: shapefiles on shared drives, tables in database schemas, rasters in cloud buckets, metadata in spreadsheets. Finding the right dataset means asking Slack or grepping file servers. Sharing it means exporting, emailing, and hoping the CRS matches.

GeoLens replaces that workflow:

• One data hub: upload files, create datasets, register tables already in GeoLens's database, import feature-service snapshots, or reference remote STAC assets — then search and preview them together
• Source state, not guesswork: see how each dataset entered the catalog, when it was last refreshed or checked, how its last refresh compares with its declared cadence (fresh, due, overdue, or unknown), and whether a remote Service or STAC origin is still reachable
• Works with your tools: OGC API Features/Records with server-side CQL2 filtering, STAC API 1.0, direct tile URLs for QGIS, ArcGIS, and MapLibre
• No lock-in: your catalog and the copies GeoLens manages stay on infrastructure you control and leave through open formats. Vector datasets export to GeoPackage, GeoJSON, Shapefile, CSV, GeoParquet, FlatGeobuf, or PMTiles; rasters download as Cloud-Optimized GeoTIFF; and any OGC API client reads the catalog directly
• Semantic and spatial search: pg_trgm fuzzy matching out of the box; add an embedding provider and enable semantic search to rank datasets by meaning (pgvector)
• Built-in map builder: compose multi-layer maps, style them, and share via public link or embeddable iframe
• AI-assisted (optional): chat with your maps, auto-generate descriptions, search by natural language. Bring an OpenAI-compatible endpoint or Anthropic key, or skip it entirely

See it in action

The examples below use a JWT bearer token. Mint one against the local stack (the login endpoint accepts an OAuth2 password form, so use -d with form fields, not JSON). Substitute your admin username and the password from .env (grep '^GEOLENS_ADMIN_PASSWORD=' .env):

TOKEN=$(curl -s -X POST http://localhost:8080/api/auth/login/ \
  -d 'username=admin&password=<your-admin-password>' | jq -r '.access_token')

Semantic search takes a one-time admin setup: an embedding provider and the AI + Semantic Search toggles in the admin AI settings, plus an embedding backfill for data ingested before setup (the search guide walks through it). Once that's on, search datasets by meaning instead of exact keyword matches:

# Semantic search ranks by meaning: "hydrology" surfaces the lake and river
# network datasets whose titles never mention the word
curl "http://localhost:8080/api/search/datasets/?q=hydrology&limit=3" \
  -H "Authorization: Bearer $TOKEN" | jq '.features[].properties.title'

One search-endpoint behavior to know when consuming it programmatically: the first page augments the dataset results with up to five matching collections, so numberReturned can exceed limit on page 0 only. That is deliberate, not a bug — limit still bounds the number of datasets per page.

Every dataset is also a standard OGC API Features endpoint:

# Grab a public collection id from the catalog. Search anonymously (no token) so
# the id is one anyone can read, matching the unauthenticated items request below.
CID=$(curl -s "http://localhost:8080/api/search/datasets/?q=countries&limit=1" \
  | jq -r '.features[0].id')

# GeoJSON features with a bbox filter, works in QGIS, ArcGIS, any OGC client
curl "http://localhost:8080/api/collections/$CID/items?bbox=-10,35,30,60&limit=5"

PostGIS and pgvector share one database, so with semantic search enabled you can rank datasets by meaning inside a spatial window in a single query. See the search guide for how semantic and spatial search work together.

Connect directly from QGIS: Layer > Add WFS / OGC API Features and point at http://localhost:8080/api/.

The same endpoints from the tools you already use: geolens-examples holds single-file MapLibre, Leaflet, OpenLayers and ArcGIS JS pages, QGIS and DuckDB walkthroughs, both GeoLens SDKs, a semantic catalog search, a STAC browser, a saved-map embed, a Python/GeoPandas analysis, a catalog-as-code manifest for the CLI, and an MCP setup. The read-only ones run against the live demo, and CI replays them there on every push and once a week, so what you copy is code that worked this week. Browse the gallery.

Features

Each example above has a full guide in the docs. What GeoLens reads, writes, and exposes:

Data ingestion and export

• Five source modes: Uploaded and Created data are managed locally; Register Table serves an existing table in GeoLens's own PostGIS database in place; Service imports are one-shot local copies; STAC datasets keep a live reference to the remote asset
• Vector: Shapefile, GeoPackage, GeoJSON, GeoParquet, FlatGeobuf, KML/KMZ, zipped File Geodatabase, CSV, XLSX
• Raster: GeoTIFF and Cloud-Optimized GeoTIFF (COG) with automatic conversion
• Mosaics: VRT-based raster mosaics from multiple source files
• Export: GeoJSON, Shapefile, GeoPackage, CSV, and FlatGeobuf with CRS reprojection; GeoParquet (always EPSG:4326); PMTiles as a self-contained tile archive for static hosts that support range requests
• Source state: origin and last-refreshed/last-checked timestamps, cadence-based source freshness, and on-demand health checks for Service and STAC origins
• Provenance tracking and metadata editing

Analysis

• Buffer (metres, kilometres, feet, or miles), centroid, clip by a drawn area or by another polygon layer, and dissolve with an optional group-by column; spatial join and select by location match features on intersection, measure adds area_sqm and length_m columns, and intersect writes the pairwise overlay with attributes from both sides
• All operations preview on the map except dissolve, which is materialize-only; previews are capped at 500 features. Create dataset then runs any of the eight over every feature as a background job, within per-operation source limits (250k features for dissolve, 500k for buffer)
• The output is an ordinary vector dataset — styleable, exportable, and served through the OGC API endpoints like any other
• The chat assistant can run buffer, centroid, and layer-based clip previews on request

Standards and interop

• OGC API - Features (with server-side CQL2 filtering and per-collection /queryables) and OGC API - Records; STAC API 1.0 catalog endpoint; JSON-LD catalogs for DCAT 3, DCAT-US 3.0, and GeoDCAT-AP
• Direct tile URLs and per-user API keys for QGIS, ArcGIS, MapLibre, and any OGC client
• Vector tiles omit attribute columns below zoom 10 to keep low-zoom tiles small; add the cols=<column>,<column> query parameter to a tile URL to opt specific columns in at every zoom (names are validated against the dataset's columns, unknown names are dropped)
• JWT + OAuth 2.0/OIDC, RBAC with per-dataset permissions
• Interface in English, Spanish, French, German, and Simplified Chinese

<details> <summary>Security</summary>

• JWT authentication with refresh tokens
• API key management per user
• OAuth 2.0 / OIDC support (Google, Microsoft, generic providers)
• Role-based access control (RBAC) with per-dataset permissions
• Self-serve registration is off by default; when enabled with SMTP verification, registration email delivery is uniform for new and colliding submissions
• Audit logging for all administrative actions

</details>

Screenshots

<p align="center"> <img src=".github/assets/geolens-search.png" alt="GeoLens catalog search for 'tallest peaks in Europe' semantically returning the swissALTI3D Matterhorn terrain dataset, with type, location, and temporal filters" width="900" /> <br /> <em><strong>Find:</strong> search by meaning. "Tallest peaks in Europe" finds the Matterhorn terrain model even though no result contains any of those words, alongside type, location, and temporal filters</em> </p> <p align="center"> <img src=".github/assets/geolens-dataset.png" alt="GeoLens dataset detail for Significant Volcanic Eruptions: a global map preview of 900 eruption sites along plate boundaries above schema stats and typed metadata" width="900" /> <br /> <em><strong>Inspect:</strong> every dataset gets a map preview, schema stats, and typed metadata. Here, 6,000 years of significant volcanic eruptions from NOAA NCEI</em> </p> <p align="center"> <picture> <source media="(prefers-color-scheme: dark)" srcset=".github/assets/geolens-dataset-chat-dark.png" /> <img src=".github/assets/geolens-dataset-chat.png" alt="GeoLens Ask AI panel on the Meteorite Landings dataset answering 'How many meteorites were seen falling versus found later?' with a prose summary, a Fell/Found count table, and a button to open the result in the map builder" width="900" /> </picture> <br /> <em><strong>Ask your data:</strong> question a dataset in natural language. "How many meteorites were seen falling versus found later?" comes back with the answer, the counts (1,096 vs 31,090), and a one-click jump into the builder</em> </p> <p align="center"> <img src=".github/assets/geolens-matterhorn-terrain.jpg" alt="GeoLens map builder rendering the Matterhorn as a 3D terrain mesh from swissALTI3D lidar, with labeled peaks, climbing routes, the drag-orderable layer stack, and a legend" width="900" /> <br /> <em><strong>Build:</strong> compose multi-layer maps in the browser with a drag-orderable layer stack and per-layer editors (here: the Matterhorn as a 3D terrain mesh from swissALTI3D lidar)</em> </p> <p align="center"> <img src=".github/assets/geolens-ai-labels.png" alt="GeoLens Ask AI panel adding volcano-name labels to the Restless Earth map from the natural-language request 'Label the volcanoes with their names'" width="900" /> <br /> <em><strong>Ask AI:</strong> edit maps in natural language. "Label the volcanoes with their names" adds readable labels to the Restless Earth map (optional: bring an OpenAI-compatible endpoint or Anthropic key)</em> </p> <p align="center"> <picture> <source media="(prefers-color-scheme: dark)" srcset=".github/assets/geolens-admin-overview-dark.png" /> <img src=".github/assets/geolens-admin-overview.png" alt="GeoLens admin overview with an all-systems-operational health panel showing database, storage, cache, and tile-cache latencies, dataset and storage totals, and AI provider status" width="900" /> </picture> <br /> <em><strong>Operate:</strong> the built-in admin plane covers live health, usage, users, jobs, audit log, and AI status — nothing extra to stand up</em> </p>

Quick start

Prerequisites: Docker Engine 24+ and Docker Compose v2. The bundled stack ships PostgreSQL 18. If you point GeoLens at an externally managed database, it must be PostgreSQL 13+ (for gen_random_uuid()) with pgvector 0.5+ (for HNSW semantic-search indexes), plus PostGIS, pg_trgm, and unaccent. The API and worker run in containers (Python 3.14 bundled, no host Python needed). The optional CLI runs on your host and requires Python 3.11+; the Python SDK and seed scripts require Python 3.10+.

Clone the repo and run the installer from the checkout. You can read the script before running it; from a clone it builds the images locally:

git clone https://github.com/geolens-io/geolens.git
cd geolens
bash scripts/install.sh

The one-line form runs the same script and pulls the prebuilt, version-pinned images instead of building them:

curl -fsSL https://getgeolens.com/install.sh | sh

Either way, scripts/install.sh copies .env.example to .env, generates a JWT signing secret, sets up admin credentials, and runs docker compose up -d. The admin username defaults to admin; the admin password is auto-generated as a strong random value (written to .env, never printed to your terminal) unless you supply your own. For unattended installs, set GEOLENS_ADMIN_USERNAME and GEOLENS_ADMIN_PASSWORD in the environment before running and the prompts are skipped. Re-running the script is idempotent: existing values in .env are preserved.

Wait about 60 seconds for services to start, then open http://localhost:8080. Log in with your admin username and the generated password (retrieve it with grep '^GEOLENS_ADMIN_PASSWORD=' geolens/.env — the one-line installer clones into geolens/ under the directory you ran it from; inside a source checkout it's just .env).

Verify all services are healthy:

docker compose ps

First-run notes: the one-line install pulls prebuilt images and is up in about a minute (only the small PostGIS + pgvector database layer builds locally). Cloning and running bash scripts/install.sh instead builds every image from source: 5-10 minutes on the first run (GDAL + Postgres extensions + the frontend bundle); subsequent starts settle in ~60 seconds either way. If ports 5434/8001/8080 are already taken, change DB_PORT, API_PORT, or FRONTEND_PORT in .env. For port conflicts, stuck startups, out-of-memory, and migration warnings, see the Troubleshooting guide.

For production deployment, see the Install Guide. A Kubernetes Helm chart lives in the separate geolens-deployments repo.

Verify the installer

Each GitHub Release attaches a SHA256SUMS file generated by CI alongside install.sh. To confirm a downloaded installer was not tampered with before running it, download both assets from the same release and place them in the same directory, then run:

# Linux / Windows WSL
sha256sum -c SHA256SUMS

# macOS
shasum -a 256 -c SHA256SUMS

A passing check prints install.sh: OK.

Upgrading

To upgrade a prebuilt install, run ./scripts/upgrade.sh from your install directory. It backs up the database, pulls the new images, runs migrations behind a health gate, and prints a rollback recipe if anything fails. See UPGRADING.md for the prebuilt and source-build flows plus rollback, or the online Upgrade Guide.

Add your first dataset

The repo ships a small city-parks.geojson. Upload and publish it in one command with the GeoLens CLI:

pip install geolens-cli                              # installs the `geolens` command
geolens login http://localhost:8080/api              # use your admin username + password
geolens publish examples/manifests/first-catalog/city-parks.geojson --name "City Parks"

geolens publish runs the upload → preview → commit ingest flow and prints the new dataset's URL. One command takes a local file to a published, mappable dataset.

For repeatable, multi-dataset catalogs, describe your sources in a manifest (geolens.yaml) and apply it with geolens apply. Manifest sources are referenced by HTTP(S) URL, S3 URI, or a path already staged on the server; the examples in examples/manifests/ are templates to adapt. Scaffold a fresh one with geolens init and edit it for your sources:

geolens init                       # writes geolens.yaml in the current directory
geolens validate geolens.yaml      # local schema check, no API call
geolens apply geolens.yaml         # validates + applies via /ingest/manifest/apply

See the CLI guide for the full manifest schema, source kinds, and CI integration patterns.

Seed data

scripts/seed-showcase.py builds seven showcase maps from public open data: a global tectonics story over real ocean-floor relief, the Manhattan 3D skyline colored by construction era (the hero above), Atlantic hurricane tracks since 1950, clustered meteorite falls, the Matterhorn in 2 m lidar 3D terrain, by-reference Sentinel-2 imagery of New York, and a hurricane-exposure map computed in place from the storm tracks with buffer, intersect and dissolve:

pip install httpx
python scripts/seed-showcase.py --username admin --password "$(grep '^GEOLENS_ADMIN_PASSWORD=' .env | cut -d= -f2-)"

Requires internet access to the upstream open-data sources. See scripts/README.md for flags (--no-terrain, --prune, …).

Architecture

GeoLens is a small set of services around a single PostgreSQL/PostGIS database: the API serves the catalog, search, and OGC/STAC endpoints; a worker handles ingestion; and Titiler serves raster tiles from object storage.

flowchart TB
    B["Browser: React + MapLibre app"]
    OGC["QGIS · ArcGIS · OGC/STAC clients"]

    NG["Nginx reverse proxy<br/>serves the React build, routes /api and tiles"]

    subgraph Application
      API["FastAPI<br/>catalog · semantic search · OGC/STAC · vector tiles"]
      W["Worker<br/>GDAL/ogr2ogr ingestion"]
      TT["Titiler<br/>COG raster tiles"]
    end

    subgraph store [Data and storage]
      PG[("PostgreSQL 18<br/>PostGIS · pgvector · pg_trgm<br/>+ Procrastinate queue")]
      OBJ[("Object storage<br/>local files or S3/MinIO")]
      CACHE[("Valkey cache")]
    end

    B --> NG
    OGC --> NG
    NG --> API
    NG --> TT
    API <--> PG
    API --> OBJ
    API -. tile/query cache .-> CACHE
    PG == job ==> W
    W --> PG
    W --> OBJ
    TT --> OBJ

Component	Technology
Frontend	React 19, Vite, MapLibre GL v6, TanStack Query, Tailwind CSS
Backend API	FastAPI (Python), GDAL/ogr2ogr, Procrastinate (task queue)
Raster Tiles	Titiler (COG tile server)
Object Storage	MinIO (S3-compatible, local dev) or any S3 provider
Cache	Valkey (tile and query cache)
Database	PostgreSQL 18 + PostGIS 3.6 + pgvector + pg_trgm (minimum: PostgreSQL 13, pgvector 0.5)
Reverse Proxy	Nginx (production) / Vite dev proxy (development)

Configuration

All configuration is managed through environment variables in .env. See the Configuration Reference for the full list of options with defaults and descriptions.

Connection pool budget

GeoLens ships tuned for a single PostgreSQL instance: the API, worker, and admin pools fit within 70 of 80 max_connections out of the box (Postgres max_connections is set to 80), sized by DB_POOL_SIZE (pool_size) and DB_MAX_OVERFLOW (max_overflow, default 3). See Connection Pool Tuning for the per-process budget and how to raise the ceiling.

Backups

Automated, scheduled backups run by default. You do not need a --profile backup flag. The backup service starts alongside api, worker, and db on every docker compose up and runs pg_dump on a daily/weekly schedule alongside an archive of the object-storage staging volume, so a restore reproduces a working instance (DB + uploaded files).

Off-site (S3) upload is additionally gated on BACKUP_S3_ENABLED=true. The built-in uploader signs requests with AWS Signature V4 (awscli), compatible with Cloudflare R2, modern AWS S3, and MinIO. A failed upload surfaces a visible ERROR in container logs (not a swallowed warning), so silent offsite backup loss is detectable immediately.

For day-2 operations, restore procedures, and incident response, see RUNBOOK.md. For provider-specific configuration options, see Backups & Restore.

Monitoring

The API and worker export Prometheus metrics out of the box (HTTP rate/latency/ errors, job-queue depth, DB pool, tile-cache). Reference scrape config, alert rules, and a Grafana dashboard ship in infra/monitoring/; see RUNBOOK.md §4 for the setup steps.

Reference

Guide	Description
Install Guide	Step-by-step deployment with Docker Compose
Upgrade Guide	Upgrading between versions with rollback procedures
Configuration Reference	All environment variables and their defaults
Admin Guide	User management, datasets, system health
Self-host on managed cloud services	Managed database, object storage, and cache deployment guides
CLI & Manifests	Publish files and manage catalogs with the geolens CLI
API Reference	Auto-generated reference at docs.getgeolens.com; development-mode stacks also serve Swagger UI at /api/docs (disabled in production)
Manifest examples	Template geolens.yaml manifests to adapt: public-cog (remote COG), url-source, s3-source, publication-states
Client examples	Runnable browser, QGIS, DuckDB, SDK, CLI, embed, Python, and MCP examples; the read-only ones are verified against the live demo in CI (gallery)

Community

• GitHub Discussions: questions, ideas, show and tell
• Support: where to ask for help and how problems get routed
• Contributing Guide: development setup, code style, and PR guidelines

Known limitations

• Single PostgreSQL instance, with no built-in high availability or clustering.
• GeoLens is designed for one organization per self-hosted deployment.
• Terrain rendering assumes DEM units are in meters; datasets in other vertical units may render exaggerated.
• GeoLens's own REST API may still change between minor releases (see the API stability note above).

License

GeoLens is licensed under the Apache License 2.0. The GeoLens name, logo, and brand assets are not covered by this license. See TRADEMARKS.md. Third-party sample-data attribution is in THIRD_PARTY_DATA.md.

Project policies: governance · maintainers · contributing · security · release process · egress & air-gap.