How to call anthropic api from framer without cors
Framer AI widgets with edge Claude proxy
Framer apps hit CORS and credential limits when calling Anthropic. Framer fetch to RealComposer with streaming-friendly headers. Use one RealComposer edge URL with OPTIONS handling, client tokens, and vault injection.
Why How to call anthropic api from framer without cors is hard without an edge proxy
Calling Anthropic directly from Framer risks leaked secrets, CORS blocks, or oversized JSON that slows rendering.
- Exposed API keys in Framer bundles or DevTools
- Sequential upstream calls on slow mobile networks
- Third-party rate limits and surprise billing spikes
How RealComposer Solves This at the Edge
Store credentials in Secret Vault
Save ANTHROPIC_API_KEY in RealComposer.
Configure edge pipeline
Add upstream steps with vault header injection and map the response fields your client needs.
Call from Framer
Use your workspace edge URL with a restricted client token.
const res = await fetch('https://realcomposer.com/v1/workspace/anthropic-api-framer-without-cors', {
headers: { Authorization: 'Bearer rc_live_client_token' }
});
const data = await res.json();
{
"status": 200,
"debug_trace": "trace_batch2",
"data": {
"id": "obj_batch2",
"status": "active",
"audit_logs": [
{
"action": "fetch",
"timestamp": 1714589200
}
],
"internal_metadata": {
"cluster": "edge"
},
"result": {
"name": "Sample",
"tags": [
"batch2"
]
}
}
}
{
"id": "obj_batch2",
"status": "active",
"result": {
"name": "Sample",
"tags": [
"batch2"
]
}
}
curl -X GET "https://realcomposer.com/v1/workspace/anthropic-api-framer-without-cors" \ -H "Authorization: Bearer rc_live_client_token"
Developer Questions & Troubleshooting
Is it safe to call Anthropic from Framer?
Only if secrets stay off the device. RealComposer injects credentials on the server edge so clients never hold production keys.
Does RealComposer add latency?
Cloudflare edge execution adds a few milliseconds; caching can answer repeat calls in under 10ms.
Deploy this Framer + Anthropic Recipe
Clone this pre-configured pipeline into your RealComposer workspace in one click. We pre-populate upstream URLs, headers, and mapping rules.