Outdoorithm for Developers

Campground data, enriched.

Search, community safety, satisfaction grades, review sentiment, live availability, and gear for 11,800+ US campgrounds — over a REST API, an MCP server, and webhooks.

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11,800+
US campgrounds
256,000+
campsites
1.9M+
reviews analyzed
40+
reservation systems

Months to scrape. Years to enrich.

Reliably pulling availability from 40+ reservation systems — through the WAFs, CAPTCHAs, and rate limits — is months of dedicated engineering on its own, and it only gets you raw listings. On top of that we've built years of community-safety classification, satisfaction grading, and sentiment analysis no reservation system exposes. Build on both without building either.

Community safety (Greenbook)

Per-campground welcomeness scores and discrimination flags, classified from real reviews. Data no reservation system exposes.

Report Card grades

A–F satisfaction grades per campground and per driver (scenery, facilities, noise, value…), graded against the national distribution.

Review sentiment

Aggregated sentiment, trend direction, and our own generated summaries — never verbatim third-party review text.

Gear intelligence

A curated gear catalog with per-campground recommendations matched to terrain, activities, and amenity gaps.

Terrain & scenery

Geographic terrain classification (mountain, forest, coastal, desert…) derived from coordinates and review signal.

Availability + alerts

Live and cached campsite availability across 40+ reservation systems, plus webhook notifications the moment a site opens.

Two ways to build

REST API

A versioned JSON API for apps, websites, and internal tools. API-key auth, cursor pagination, RFC 9457 errors, idempotent writes, and an OpenAPI 3.1 spec.

API reference OpenAPI spec

MCP server

A hosted Model Context Protocol server so AI agents can query campgrounds, availability, safety, weather, and gear as tools — no scraping, no glue code.

claude mcp add --transport http outdoorithm https://mcp.outdoorithm.com/mcp
MCP docs

What's in the API

  • CampgroundsSearch with 20+ filters; ~90-field enriched profiles.
  • SafetyGreenbook flag status, vibe score, tone & staff breakdown, alerts.
  • GradeOverall + per-driver report-card grades.
  • ReviewsSentiment, our summaries, per-dimension signal counts.
  • AvailabilityLive/cached availability for a date range.
  • GearCatalog search + per-campground recommendations.
  • AlertsCreate & manage availability alerts (idempotent writes).
  • WebhooksSigned availability.found events to your endpoint.

Your first call

Create a key, then make a request. Every response is versioned JSON under /api/v1.

curl https://outdoorithm.com/api/v1/campgrounds?state=CA&limit=3 \
  -H "Authorization: Bearer oai_your_key_here"
Full quickstart in the docs

Access & licensing

Evaluate for free. Create a self-serve API key from your dashboard and start building against the full surface right away.

Commercial use requires a license. Powering a product, app, or internal tool with Outdoorithm data is a paid, licensed use. Pricing is tailored to your volume and use case — get in touch and we'll scope it with you.

Attribution required. Reasonable attribution to Outdoorithm must appear wherever our data is shown.

100% of Outdoorithm's profits support Outdoorithm Collective, a 501(c)(3) creating guided camping experiences for families historically excluded from the outdoors. Licensing our data funds that work.

Start building with Outdoorithm data

Grab a key to evaluate, or talk to us about a commercial license.

Get an API keyContact licensing