Live request & response schemas for every AI model API▌

Which models exist right now, and what their payloads look like. JSON Schemas for 7 providers, refreshed automatically, served as plain JSON over HTTP — no key needed for reads.

try it
$ curl https://modelschemas.com/v1/models?q=claude
{ "id": "anthropic-claude-sonnet-5", "rawId": "claude-sonnet-5", "lastSeenAt": 1785082565, … }
GET /v1/modelsdocs/mcp/llms.txt
live7 providers2,064 models1,394 endpoints2,770 schema versionspolled 11m ago · specs synced 11h ago

Providers

GET /v1/providers →
providerstatusmodelsendpointsschemaspolledsynced
Anthropicactive1351011m ago11h ago
ElevenLabsactive10345811m ago11h ago
FALactive1,4341,2622,52411m ago2d ago
Google Geminiactive59193811m ago11h ago
xAI Grokactive11122411m ago11h ago
OpenAIactive129386911m ago11h ago
OpenRouteractive408244711m ago11h ago

Recent changes

GET /v1/changes →
11m agomodel.updatedModel openai/gpt-5.1-codex updatedopenrouter
2h agomodel.updatedModel z-ai/glm-5.2 updatedopenrouter
3h agomodel.updatedModel z-ai/glm-5.2 updatedopenrouter
3h agomodel.updatedModel tencent/hy3-preview updatedopenrouter
3h agomodel.updatedModel z-ai/glm-5.2 updatedopenrouter
4h agomodel.updatedModel z-ai/glm-5.2 updatedopenrouter
4h agomodel.updatedModel z-ai/glm-5.2 updatedopenrouter
5h agomodel.updatedModel z-ai/glm-5.2 updatedopenrouter

Subscribe with a webhook to get these pushed — POST /v1/subscriptions

Examples

/examples →
schema-studiogenerative UI — request forms rendered at runtime from live provider schemas@modelschemas/vite
image-dimensionsevery image model with its supported output sizes, extracted from each input schema@modelschemas/client
video-composervideo request builder whose knobs only offer values the schema allows@modelschemas/client