HTTP Headers Analysis for https://api.nylas.com

Detected Technologies from Headers

See all in URL Inspect 3

Kong Active incidents

Nginx

Varnish

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=31557600

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Missing

Not configured

X-Content-Type-Options

Missing

Not configured

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• Add Content-Security-Policy header to prevent XSS attacks
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• Add X-Content-Type-Options: nosniff
• Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
• Consider adding Permissions-Policy to control browser features

Performance Headers

Accept-Ranges

Performance

bytes

Connection

Performance

close

accept-ranges: bytes
connection: close

Caching Headers

Cache-Control

Caching

no-store

cache-control: no-store

Content Headers

Content-Length

Content

169

Content-Type

Content

application/json

content-length: 169
content-type: application/json

Server Headers

Server

nginx

server: nginx

CORS Headers

Access-Control-Allow-Credentials

Cors

true

Access-Control-Allow-Headers

Cors

Authorization,Accept,Cache-Control,X-Requested-With,Content-Type,User-Agent,Nylas-SDK-API-Version,X-Nylas-Client-Id

Access-Control-Allow-Methods

Cors

GET,PUT,POST,DELETE,OPTIONS

access-control-allow-credentials: true
access-control-allow-headers: Authorization,Accept,Cache-Control,X-Requested-With,Content-Type,User-Agent,Nylas-SDK-API-Version,X-Nylas-Client-Id
access-control-allow-methods: GET,PUT,POST,DELETE,OPTIONS

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Fri, 08 May 2026 10:25:48 GMT

Via

Other

1.1 varnish, 1.1 varnish

X-Cache

Other

MISS, MISS

X-Cache-Hits

Other

0, 0

X-Fastly-Id

Other

3517236958

X-Kong-Proxy-Latency

Other

1

X-Kong-Upstream-Latency

Other

2

X-Served-By

Other

cache-pdk-kfty8610026-PDK, cache-pdk-kfty8610026-PDK

X-Timer

Other

S1778235948.297720,VS0,VE367

X-Unique-Id

Other

01b11669-833a-4dbe-9da6-9a6bc12e36bc

date: Fri, 08 May 2026 10:25:48 GMT
via: 1.1 varnish, 1.1 varnish
x-cache: MISS, MISS
x-cache-hits: 0, 0
x-fastly-id: 3517236958
x-kong-proxy-latency: 1
x-kong-upstream-latency: 2
x-served-by: cache-pdk-kfty8610026-PDK, cache-pdk-kfty8610026-PDK
x-timer: S1778235948.297720,VS0,VE367
x-unique-id: 01b11669-833a-4dbe-9da6-9a6bc12e36bc

Recommendations

Enable compression (gzip/brotli) to improve performance