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Preview. Every figure on this site is currently a fixture, not a measurement — the live crawl has not run yet. Nothing here describes Google's actual results.

SERPens Free key

Topic

API design

Contracts, versioning and the details that decide whether a migration takes an hour or a quarter.

Measured 2026-W36 · 2026-08-31 · google.com, gl=us

2026-W36

The shape of this topic

Queries measured

183

every week

AI Overview coverage

49.7%

corpus average 50.8%

Organic results

8.7

average per query

Weekly churn

14%

of the top 10 changes

Google answers api design queries itself less often than average — 49.7 against 50.8 percent across the corpus.

Citations

Who Google cites here

en.wikipedia.org 18

http-429.io 18

cloudflare.com 16

json-rpc.com 15

graphql.com 14

npmjs.com 14

developer.mozilla.org 14

docs.etag.com 13

docs.rest.dev 12

docs.json-rpc.com 12

docs.graphql.com 12

openapi.com 12

Rankings

Who ranks here

graphql.com 74

http-429.io 67

github.com 65

reddit.com 60

stackoverflow.com 55

json-rpc.com 54

en.wikipedia.org 52

openapi.com 52

youtube.com 50

dev.to 44

rest.dev 43

api-versioning.com 42

The gap

Cited more often than ranked

Domain	Citations	Page-one finishes	Gap
cloudflare.com	16	0	+16
npmjs.com	14	0	+14
developer.mozilla.org	14	0	+14
docs.etag.com	13	0	+13
docs.rest.dev	12	0	+12
docs.json-rpc.com	12	0	+12
docs.graphql.com	12	0	+12

These domains earn a place in Google's own answer more often than they earn a place on page one. Whatever gets a source into an AI Overview, it is not only ranking.

Intent

By what the searcher wants

Intent	Queries	AI Overview
commercial	53	32.1%
informational	91	70.3%
comparison	24	25.0%
navigational	8	12.5%
support	7	42.9%

Intent is assigned when the query enters the corpus, not inferred afterwards, so this split is stable from week to week.

Blocks

Result features

AI Overview 49.7%

People Also Ask 65.0%

Related searches 80.3%

Knowledge panel 19.1%

Sitelinks 40.4%

Index

Queries in this topic

best api design api design comparison api design for beginners open source api design api design pricing comparison how does api design work how to use OpenAPI OpenAPI best practices OpenAPI python OpenAPI example OpenAPI tutorial OpenAPI api OpenAPI alternatives what is OpenAPI OpenAPI pricing OpenAPI rate limits is OpenAPI free OpenAPI review JSON Schema tutorial JSON Schema not working JSON Schema pricing JSON Schema example JSON Schema review JSON Schema best practices JSON Schema documentation JSON Schema api how to use JSON Schema JSON Schema python what is JSON Schema JSON Schema alternatives what is REST REST review REST rate limits REST tutorial REST python REST best practices REST api REST alternatives REST documentation REST not working REST example how to use REST GraphQL rate limits GraphQL documentation GraphQL pricing GraphQL alternatives GraphQL example what is GraphQL GraphQL review GraphQL api is GraphQL free GraphQL tutorial how to use GraphQL gRPC not working is gRPC free gRPC rate limits gRPC tutorial gRPC pricing gRPC review gRPC example how to use gRPC gRPC documentation what is gRPC gRPC alternatives gRPC api JSON-RPC rate limits JSON-RPC review is JSON-RPC free JSON-RPC api JSON-RPC pricing JSON-RPC documentation JSON-RPC not working JSON-RPC tutorial JSON-RPC alternatives what is JSON-RPC how to use JSON-RPC webhooks tutorial how to use webhooks what is webhooks webhooks best practices best webhooks tools webhooks explained webhooks example webhooks python idempotency keys tutorial idempotency keys example what is idempotency keys idempotency keys best practices how to use idempotency keys idempotency keys python idempotency keys explained idempotency keys api best idempotency keys tools best cursor pagination tools cursor pagination best practices cursor pagination tutorial cursor pagination python what is cursor pagination cursor pagination api cursor pagination explained how to use cursor pagination rate limiting tutorial rate limiting python rate limiting api rate limiting best practices how to use rate limiting what is rate limiting best rate limiting tools rate limiting explained what is exponential backoff how to use exponential backoff exponential backoff example exponential backoff tutorial best exponential backoff tools exponential backoff best practices exponential backoff explained exponential backoff python API versioning not working API versioning rate limits is API versioning free how to use API versioning API versioning python API versioning api what is API versioning API versioning tutorial API versioning documentation API versioning pricing API versioning best practices API versioning alternatives HTTP 429 best practices is HTTP 429 free HTTP 429 api HTTP 429 python what is HTTP 429 HTTP 429 alternatives HTTP 429 not working HTTP 429 review HTTP 429 example HTTP 429 documentation ETag rate limits ETag review ETag best practices ETag documentation ETag api ETag pricing ETag not working ETag example ETag tutorial how to use ETag what is ETag ETag alternatives OpenAPI vs JSON Schema OpenAPI vs GraphQL JSON Schema vs REST REST vs GraphQL REST vs JSON-RPC GraphQL vs gRPC GraphQL vs webhooks gRPC vs JSON-RPC gRPC vs idempotency keys JSON-RPC vs webhooks JSON-RPC vs cursor pagination webhooks vs idempotency keys webhooks vs rate limiting idempotency keys vs cursor pagination idempotency keys vs exponential backoff cursor pagination vs rate limiting cursor pagination vs API versioning rate limiting vs exponential backoff rate limiting vs HTTP 429 exponential backoff vs ETag API versioning vs HTTP 429 HTTP 429 vs ETag

API

Measure a topic of your own

Pick your queries, run them on a schedule, keep what comes back. That is the whole method — the endpoint below returns the overview, its citations and the organic results together.

curl --request GET \
  --url 'https://serpens.p.rapidapi.com/api/v1/search_ai_overview?q=best%20api%20design&gl=us&hl=en&format=json' \
  --header 'x-rapidapi-host: serpens.p.rapidapi.com' \
  --header 'x-rapidapi-key: YOUR_KEY'

Start measuring

Free tier, no card. Same endpoint that produced every number on this page.

Get a free API key