Schema compiler

One schema. Four runtimes. Zero hand-mapping.

Schema Gateway compiles a single JSON Schema into ready-to-paste request payloads for OpenAI, Gemini, Anthropic, and Ollama. Use it locally for free, then move to the shared signed API when CI or multiple engineers need the same compiler surface.

4 providers from one source schema

Live demo hosted proof before checkout

Signed output when the hosted API matters

schema-gateway compile \
  --schema ./schema.json \
  --target openai,gemini,anthropic,ollama \
  --name extraction_result

Run free live demo Install the CLI Buy Starter Access

Public release v0.1.3 is live, and the hosted compiler is available at POST /v1/compile.

Compiled preview

OpenAI Responses and Chat Completions fragments

Gemini responseJsonSchema plus ordering fixes

Anthropic Native tools definitions, not compatibility guesswork

Ollama format payloads with stable inference hints

Compiled preview

{
  "openai": {
    "text": {
      "format": {
        "type": "json_schema",
        "name": "schema_gateway_output"
      }
    }
  },
  "gemini": {
    "generationConfig": {
      "responseMimeType": "application/json"
    }
  }
}

Need a shared compiler for CI or multiple teams? The hosted API returns the same compiled bundle with a signature and stable base URL.

Interactive playground

Try the hosted compiler before you pay.

This public demo is intentionally limited, but it is real: compile only, small schemas, no API key, signed response. The goal is simple: the product should prove itself before anyone touches checkout.

12 KB request 6 KB schema Compile only

Source schema

Pick targets, adjust the schema, and run the compiler.

No signup Signed result

Targets

Schema JSON

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Live output

The sample run loads automatically so the page feels alive instead of empty.

Loading a sample compile run...

Show raw demo bundle

Paid access unlocks the signed shared endpoints for /v1/compile, /v1/diff, /v1/lint, and /v1/normalize.

Upgrade path

Evaluate locally. Move to the hosted API when the team needs it.

Local CLI

Install from GitHub and run the compiler locally with no registry friction.

npm install https://github.com/sravan27/schema-gateway/releases/download/v0.1.3/apex-value-schema-gateway-core-0.1.3.tgz https://github.com/sravan27/schema-gateway/releases/download/v0.1.3/apex-value-schema-gateway-0.1.3.tgz

Hosted API

Use the same compiler and regression guardrail behind a stable signed endpoint once CI or multiple engineers depend on it.

curl -X POST https://schema-gateway.sridharsravan.workers.dev/v1/compile \
  -H 'content-type: application/json' \
  -H 'x-api-key: sk_live...' \
  -d '{"schema":{"type":"object","properties":{"city":{"type":"string"}}},"targets":["openai","gemini"]}'