What does status code mean in software engineering?

A status code is a three-digit number sent by a server in response to an HTTP request. It communicates the outcome of the request: success (2xx), redirection (3xx), client error (4xx), or server error (5xx). Status codes are a standard way for servers and clients to communicate about request outcomes.

What are the most common status codes?

The most common status codes are: 200 (OK—request succeeded), 201 (Created—resource was created), 400 (Bad Request—client error), 401 (Unauthorized—authentication required), 403 (Forbidden—permission denied), 404 (Not Found—resource does not exist), 500 (Internal Server Error), and 503 (Service Unavailable). These appear constantly in development and debugging.

How do you use status code in a sentence at work?

Example sentences include: We got a 404 status code, meaning the endpoint does not exist, or Check the status code to determine whether the request succeeded. You typically use it when discussing API responses, debugging issues, or reviewing logs.

Is status code formal or informal?

Status code is neutral and technical. It is used in both casual team conversations and formal documentation. It is professional and appropriate for all workplace contexts in tech.

status code meaning in tech — Speak Tech English

Commonness	5/5
Versatility	5/5
Formality	CasualFormalNeutral
Spoken ↔ Written	SpokenWrittenBoth
Directness ↔ Diplomatic	DirectDiplomaticDirect
Region	US and UK

Say it like this

✓What status code did you get back?

✓The endpoint is returning a 404 status code

✓We need to handle different status codes gracefully

Real examples

in a standup

"We fixed the login issue; the API is now returning a 200 status code instead of 401."

in a code review

"Make sure you check the status code before parsing the response body."

in a debugging session

"The client received a 429 status code, which means we are hitting the rate limit."

Don't say this

Handle with care. Status code is only for HTTP responses or similar protocol responses. Do not use it to mean a general code review or testing status.

✕The status code is success.

✓The status code is 200, which indicates success.— Status codes are numbers (200, 404, 500), not descriptive words like success or failure.

✕I need to status code this endpoint.

✓I need to check what status code this endpoint returns.— Status code is a noun that you receive or check, not a verb you perform on something.

✕All status codes starting with 2 mean the request failed.

✓All status codes starting with 2 mean the request succeeded.— 2xx codes indicate success; 4xx and 5xx indicate errors.

Other forms

noun

status code

"The server responded with a 404 status code."

noun (plural)

status codes

"Different status codes indicate different outcomes of an HTTP request."

Often used with

return a status codeUsed when describing what a server sends back to a client

check the status codeUsed when examining the response from an API or web request

handle status codesUsed when writing logic to respond to different status code values

status code 200, 404, 500Always used with the specific three-digit number

Similar words

HTTP status codeMore formal and specific; clarifies that it is related to HTTP protocol

response codeLess common; refers to any code sent in a response

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Practice

Try it

4 quick exercises

Pick the most natural phrasing

1. Your API is failing. What do you say?

The endpoint is returning a 500 status code.The endpoint is giving a 500 status code problem.The endpoint has a bad status code number.The status code is broken at 500.

Complete the sentence

2. When a user tries to access a deleted page, the server should _______ a 404 status code.

Spot the mistake

3. Which sentence uses status code incorrectly?

We received a 200 status code, so the request was successful.The status code tells us whether the request succeeded or failed.I need to status code this before sending it.A 503 status code means the server is temporarily unavailable.

Rewrite naturally

4. Rewrite using status code: The server said the page you are looking for does not exist, with error number 404.

Questions

Quick poll

Have you said "status code" in a standup this week?

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