TL;DR: Bing Webmaster Tools is Microsoft’s free dashboard showing how a website performs in Bing — the same sort of thing Google Search Console does for Google. It can be read by a person in a browser, or by a program, and the programs talk to it through three different technical dialects. Microsoft is switching two of those dialects off on August 31, 2026, as Search Engine Roundtable reported on August 3. The third one, the modern one, is unaffected. If nothing in your agency talks to Bing automatically, this costs you nothing. If something does, and nobody checks, one of your reports goes blank at the start of September and nobody will be told why.
First, what is any of this?
Three things, plainly.
An API is a door into a service meant for programs rather than people. You look at your Bing data by logging in and clicking around. A rank tracker, a reporting dashboard or a homemade script gets the same data by sending a request to a web address and getting a machine-readable answer back. Same data, different door.
SOAP, POX and JSON are three formats for that conversation. SOAP and POX (“plain old XML”) are the older two, both built on XML — a verbose, tag-heavy way of writing data that was standard when this API was designed. JSON is the compact modern format that essentially everything on the web uses now. Bing has offered all three in parallel for years, and Microsoft’s own protocol documentation lists them side by side, with addresses that differ by exactly one word: /webmaster/api.svc/pox/ versus /webmaster/api.svc/json/. The SOAP variant sits at /webmaster/api.svc/soap.
Retirement means the door is bricked up. Not slowed down, not deprecated-with-a-warning-banner. After the date, requests to the old addresses stop being answered.
What actually changes
One word in a URL, and a date.
The SOAP and POX endpoints stop serving requests after August 31, 2026. Everything the API does remains available over JSON — the reporting is consistent that method coverage, API keys, quotas, rate limits and site permissions all stay exactly as they are. You don’t request a new key. You don’t re-verify a site. You change the addresses your code calls, and the data comes back in a different shape.
That last part is the work. A program written to read XML doesn’t read JSON by accident; whatever parses the response has to be rewritten too. For a small script that’s an hour. For a reporting pipeline somebody built in 2019 and left running, it’s an hour plus the archaeology of finding out who owns it.
Worth being clear about what is not affected: IndexNow, the ping protocol you use to tell Bing a page has changed, is a separate thing entirely and isn’t part of this. Neither is the Bing Webmaster Tools website itself. Log in on September 1 and it looks the same as it does today.
How to check, in about ten minutes
Search your own code and your vendor list for the two strings that matter.
- Grep every repo, cron job and scheduled task for
api.svc/soapandapi.svc/pox. Those exact strings are the whole test. A hit means work; no hits means you’re done. - Look hardest at the old stuff. Anything that submits URLs to Bing in bulk, pulls crawl errors into a client report, or feeds a spreadsheet somebody’s account manager opens every Monday. These are the integrations nobody has opened in years, which is precisely why they’re the risk.
- Ask your tool vendors rather than assuming. If a third-party platform pulls your Bing data, this is their migration, not yours — but “it’s their job” is not the same as “it’s handled”. One email now beats a blank chart later.
- Put a calendar reminder on September 1. If something does break, it breaks silently. No alert, no red banner, just an empty column that looks a bit like a client having a slow month.
Why a small deadline is worth ten minutes
Because the value of the data behind that door has gone up.
For most of the last decade, Bing was the search engine agencies could reasonably ignore. That stopped being true when assistants started reading the web before answering, and Microsoft has been building for the shift in its own dashboard: on February 10, 2026 it opened an AI Performance report in public preview, showing when a site is cited as a source in Microsoft Copilot answers and in Bing’s AI-generated summaries, along with the queries used to retrieve it. More is coming: after SEO consultant Lily Ray asked publicly for page- and query-level filtering in the performance reports, Microsoft’s Krishna Madhavan said on July 31 they would work on it.
So the same month Microsoft turns off a legacy door, it’s adding data worth walking through the new one for. We wrote about why Bing rankings started mattering again — this is the tooling catching up to that.
Notice the shape of the work, though. Nothing above is strategy. It’s someone opening a repo, reading a config file, checking a directive still says what it said last year, and doing that once per client. Multiply by a portfolio and it’s a morning gone, for a change with nothing to show a client at the end of it. That is the category Preferium is built to absorb: 47 automated checks crawl every page and score the site, and the system finds, fixes, deploys and verifies on its own, with a real browser re-opening the live page after each title, meta, H1 and schema deploy. It won’t rewrite your 2019 XML parser. It will stop the site-side half of this list from depending on somebody remembering. More on how the system works.
Key takeaways
- August 31, 2026: Bing’s SOAP and POX webmaster API endpoints stop serving requests. JSON/HTTP continues unchanged.
- The test is two strings. Search your code for
api.svc/soapandapi.svc/pox. No hits, no problem. - Keys, quotas and permissions carry over. The migration is new addresses and a new response format, not new credentials.
- IndexNow and the Bing Webmaster Tools interface are unaffected. This only touches programs calling the old API directly.
- Ask vendors explicitly whether their Bing integration has migrated. Silent breakage looks like a bad month, not an outage.
- Bing’s data is worth more than it was. The AI Performance report, in public preview since February, shows Copilot and Bing AI-summary citations — a channel most agencies still don’t track.
