I was thinking: why not be nice, and optimize my vuln-checker to not leech an entire document off 

 every time I am looking whether an unresolved or pending vuln is updated? Well... first off I get 405 on 

HTTP/2 200 
content-type: application/json
date: Mon, 05 Oct 2026 14:56:31 GMT
server: Google Frontend
traceparent: 00-05b09e1b3be8632d115eb137eb4a71386611d97a1d7209bc55363b2ec3848480-4152bc0a6a486f76-00
x-cloud-trace-context: 05b09e1b3be8632d115eb137eb4a71386611d97a1d7209bc55363b2ec3848480/4152bc0a6a486f76
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
grpc-status: 0
grpc-message: 
content-length: 2071
x-envoy-decorator-operation: ingress GetVulnById

So the only method I have is to download the entire advisory, hash it, compare it with the hash I have stored, and then discard it. Such a waste of bytes and compute. But then, this is of course insignificant waste compared to letting your LLM execute it.

Stacker Saloon

saloon

I was thinking: why not be nice, and optimize my vuln-checker to not leech an entire document off `api.osv.dev` every time I am looking whether an unresolved or pending vuln is updated? Well... first off I get 405 on `HEAD`, so that's already poor.

I do get all this shit:

```
HTTP/2 200 
content-type: application/json
date: Mon, 05 Oct 2026 14:56:31 GMT
server: Google Frontend
traceparent: 00-05b09e1b3be8632d115eb137eb4a71386611d97a1d7209bc55363b2ec3848480-4152bc0a6a486f76-00
x-cloud-trace-context: 05b09e1b3be8632d115eb137eb4a71386611d97a1d7209bc55363b2ec3848480/4152bc0a6a486f76
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
grpc-status: 0
grpc-message: 
content-length: 2071
x-envoy-decorator-operation: ingress GetVulnById
```

but it doesn't respond to `If-Modified-Since: ...` and it doesn't give me an `ETag: ...`.

So the only method I have is to download the entire advisory, hash it, compare it with the hash I have stored, and then discard it. Such a waste of bytes and compute. But then, this is of course insignificant waste compared to letting your LLM execute it.

`</endrant>`