Skip to main content
GET
/
categories
Categories
curl --request GET \
  --url https://index.trygravity.ai/categories
{
  "categories": [
    {}
  ],
  "total": 123
}

Documentation Index

Fetch the complete documentation index at: https://docs.trygravity.ai/llms.txt

Use this file to discover all available pages before exploring further.

​
Categories

The Index is organized into 22 categories spanning the modern developer stack — from AI/LLM infrastructure to payments, auth, observability, and everything in between. Call GET /categories to get a live count of services per category — or use the gravity_index_list_categories MCP tool.

​
Response

​
categories
array
name and service_count for every category, sorted alphabetically.
​
total
number
Total number of services in the Index.

​
Example

curl https://index.trygravity.ai/categories

{
  "categories": [
    { "name": "AI",              "service_count": 87 },
    { "name": "Analytics",       "service_count": 26 },
    { "name": "Auth",            "service_count": 23 },
    { "name": "Background Jobs", "service_count": 17 },
    { "name": "Cache",           "service_count": 8  },
    { "name": "CMS",             "service_count": 14 },
    { "name": "Commerce",        "service_count": 6  },
    { "name": "CRM",             "service_count": 10 },
    { "name": "Database",        "service_count": 53 },
    { "name": "Email",           "service_count": 23 },
    { "name": "Hosting",         "service_count": 25 },
    { "name": "Infrastructure",  "service_count": 53 },
    { "name": "Monitoring",      "service_count": 39 },
    { "name": "Payments",        "service_count": 25 },
    { "name": "Productivity",    "service_count": 29 },
    { "name": "Realtime",        "service_count": 13 },
    { "name": "Search",          "service_count": 8  },
    { "name": "SMS",             "service_count": 6  },
    { "name": "Storage",         "service_count": 13 },
    { "name": "Support",         "service_count": 7  },
    { "name": "Video",           "service_count": 4  },
    { "name": "Webhooks",        "service_count": 4  }
  ],
  "total": 493
}
Counts update whenever new services are added. The snapshot above reflects the initial public catalog (493 services, April 2026).

​
Categories at a glance

CategoryWhat’s in it
AILLM APIs, embeddings, vector DBs, agent frameworks, model hosting
AnalyticsProduct analytics, BI, attribution, feature flags
AuthIdentity providers, SSO, MFA, authorization engines
Background JobsQueue + scheduled-task platforms (BullMQ, Inngest, Trigger, …)
CacheManaged Redis / KV / edge caches
CMSHeadless CMS, MDX, content APIs
CommerceCheckout, subscriptions, marketplaces
CRMRevenue / customer data / outbound
DatabaseSQL, NoSQL, time-series, graph, vector DBs
EmailTransactional email, marketing, verification, receiving
HostingApp hosting, PaaS, serverless runtimes
InfrastructureIaC, secrets, CI/CD, SRE tooling
MonitoringError tracking, APM, logging, uptime
PaymentsProcessors, tax, fraud, payouts
ProductivityDocs, notes, meetings, automation
RealtimeWebSockets, presence, collaborative editing
SearchFull-text + vector search APIs
SMSSMS/MMS APIs, voice, number management
StorageObject storage, image/video CDNs, file uploads
SupportHelpdesk, chat, feedback portals
VideoVideo streaming, conferencing, recording
WebhooksWebhook relays, event gateways