add API rate-limit-remaining and Retry-After-time checker

[fredseo91]

Issue

Due to low api rate limit of onshape, users get stuck in the middle of working without any pre-warning.
Also, users have to wait until the api rate comes back, but they have no idea when it will.

Solution

I made a simple feature that shows remaining api rate limit and "retry-after" time
so that users can take a break until it comes back.

users can use it by typing "onshape-to-robot-check-rate" at any location.

The display will look like this:
=== Onshape API rate-limit check ===
Status : 200
Date (server) : Tue, 11 Nov 2025 16:59:31 GMT
X-Api-Version : v1
On-Version : 1.206.66766.5be5fb5f0d8e
X-Request-ID : xxxxx
X-Rate-Limit-Remaining : 992
Retry-After(seconds) : N/A

or

=== Onshape API rate-limit check ===
Status : 200
Date (server) : Tue, 11 Nov 2025 16:59:31 GMT
X-Api-Version : v1
On-Version : 1.206.66766.5be5fb5f0d8e
X-Request-ID : xxxxx
X-Rate-Limit-Remaining : 0
Retry-After(seconds) : 5623

Please note that this DOES consume one rate.

[Gregwar]

Hello,

I am discussing rate limits actively with Onshape team, with the hope to find a good tradeoff so that it doesn't become a big issue with tools like onshape-to-robot

Limits announced on their website are really really low, and fortunately not applied as-is for what I know. How blocking is it for you currently in practice ? From your example it looks like ~1000 queries each ~2hr ?

Looks like it also depends on endpoints that are reached.