One keyword list per site with se: g_uk and a position filter. Your agent compares the lists.
A content gap analysis against a competitor, run in Claude.
Half of Plausible's 20 biggest gap keywords land on one backlinks guide.
A content gap analysis lists the keywords a competitor ranks for that you do not, then checks which gaps deserve a page. On 20 October 2026 an agent compared plausible.io with usefathom.com on Google US. None of Plausible's 20 biggest keywords at difficulty 40 or under showed up for Fathom. The run cost $0.0033.
FOR Content leads and SEO consultants planning what to write next against a named competitor
THIS RUN · 20 OCT 2026 $0.0033 5 PAID CALLS
01 / DEFINITION
What a content gap analysis is
A content gap is a search your competitor shows up for and you do not. A content gap analysis lists those searches, sorts them by how many people search and how hard they are to rank for, and decides which ones deserve a page from you.
The list is the easy part. A keyword database already knows which domains rank for which keywords, so one call per site returns each list, and your agent compares them. The judgment is in the next step. Some gaps describe the competitor's product, not yours. Some are stale. A few are worth an article.
02 / METHOD
How to do a content gap analysis
Name one competitor that writes for the same buyers. Then work through four steps. The run below did each of them with one or two calls.
- Pull the biggest keywords each site ranks for, with volume and difficulty.
- Compare the lists both ways, so you know where they lead and where you do.
- Search the best gaps on Google today to see who ranks and what kind of page wins.
- Read the competitor page behind the biggest gap to see what it covers.
03 / THE PROMPT PASTE IT INTO YOUR AGENT.
One prompt.
Your agent runs it.
Your agent picks the tools, makes the calls and reads the results. You see each charge as it settles.
PASTE THIS INTO YOUR AGENT
FIRST TIME? GIVE THIS TO YOUR AGENT FIRST
Works in 
and any agent that can run a terminal command.
and any agent that can run a terminal command.04 / THE RUN RECORDED 20 OCT 2026.
Every call.
Every charge.
What your agent asked each tool, what came back and what it cost. Calls that failed or found nothing were not charged.
YOU · ONE PROMPT
We run content for usefathom.com. Do a content gap analysis against plausible.io: pull the biggest keywords each site ranks for on Google US with difficulty under 40, work out which of Plausible's we are missing, then the reverse. Check who ranks for the best gaps, read the Plausible page behind the biggest one, and suggest three articles we could write.
YOUR AGENT
tapinall ONE BALANCE- 01 Their biggest keywords
Pulled Plausible's 20 biggest keywords, out of 1,881 at difficulty 40 or under.
$0.0012 - 02 Our biggest keywords
Pulled Fathom's 20 biggest. None match Plausible's 20, so all 20 of theirs are gaps.
$0.0012 - 03 Google results, what are backlinks
Checked "what are backlinks" live. YouTube holds #1 to #3. Plausible is not in the top 12.
$0.0003 - 04 Google results, bounce rate
Checked "bounce rate". Wikipedia is #1. Neither brand is in the 7 results.
$0.0003 - 05 Read their biggest gap page
Read Plausible's backlinks guide. 3,753 words, ending in a pitch for its analytics.
$0.0003
TOTAL $0.0033 $0.0012 per list of 20 keywords
- keywords Plausible ranks for at difficulty 40 or under
- 1,881
- keywords Fathom ranks for at difficulty 40 or under
- 1,216
- of Plausible's biggest gap keywords rank with one backlinks guide
- 10 of 20
See the exact calls and responses FOR DEVELOPERS
agent-session / content-gap-analysis 5 CALLS
- 01 / THEIR BIGGEST KEYWORDS
tapinall call serpstat.google.domain.ranked_keywords --data '{"id":"1","method":"SerpstatDomainProcedure.getDomainKeywords","params":{"domain":"plausible.io","se":"g_us","size":20,"sort":{"region_queries_count":"desc"},"filters":{"difficulty_to":40}}}'20 rows of 1,881 keywords at difficulty 40 or under, biggest first
best single page apps · 8,100 / mo · difficulty 27 · #14 with a blog post
what are backlinks · 2,900 / mo · difficulty 21 · #8
bounce rate · 2,400 / mo · difficulty 24 · #9
10 of the 20 rows rank with one page, the backlinks guide
ok — Charged: $0.0012
- 02 / OUR BIGGEST KEYWORDS
tapinall call serpstat.google.domain.ranked_keywords --data '{"id":"1","method":"SerpstatDomainProcedure.getDomainKeywords","params":{"domain":"usefathom.com","se":"g_us","size":20,"sort":{"region_queries_count":"desc"},"filters":{"difficulty_to":40}}}'20 rows of 1,216 keywords at difficulty 40 or under · 15 different keywords
big sites · 4,400 / mo · difficulty 35 · #6 with a blog post
utm generator · 3,600 / mo · difficulty 25 · #3 with the UTM builder
fathom analytics · 880 / mo · 7 rows, one per ranking page
No keyword appears in both lists
ok — Charged: $0.0012
- 03 / GOOGLE RESULTS, WHAT ARE BACKLINKS
tapinall call crawl4ai.google.serp.organic --data '{"q":"what are backlinks","country":"us","language":"en","num":10}'12 organic results, People also ask and an AI Overview
#1 to #3 YouTube videos · #4 to #7 marketing and hosting blogs · #9 Reddit
plausible.io is not in the results, though the keyword list has it at #8
ok — Charged: $0.0003
- 04 / GOOGLE RESULTS, BOUNCE RATE
tapinall call crawl4ai.google.serp.organic --data '{"q":"bounce rate","country":"us","language":"en","num":10}'7 organic results, People also ask, Reddit and LinkedIn posts, and an AI Overview
#1 Wikipedia · #4 Google Analytics help · the rest are vendor glossaries
People also ask: "What is a good bounce rate?"
plausible.io and usefathom.com are not in the results
ok — Charged: $0.0003
- 05 / READ THEIR BIGGEST GAP PAGE
tapinall call litescrape.web.fetch --data '{"url":"https://plausible.io/blog/backlinks-seo-guide"}'1 page · 3,753 words · "What are backlinks in SEO and how to get them?" · published 22 January 2026
Sections on good and bad backlinks, checkers, how to earn links, audits and FAQs
A section on checking whether backlinks lead to more traffic, then a free trial link
ok — Charged: $0.0003
TOTAL $0.0033 $0.0012 per list of 20 keywords
05 / WHAT IT FOUND FROM THE RESPONSES ABOVE.
What came back.
In plain numbers.
Read straight from the responses in the run. Nothing here is a mockup.
- keywords Plausible ranks for at difficulty 40 or under
- 1,881
- keywords Fathom ranks for at difficulty 40 or under
- 1,216
- of Plausible's biggest gap keywords rank with one backlinks guide
- 10 of 20
| Keyword | Searches / mo | Difficulty | Plausible rank |
|---|---|---|---|
| best single page apps | 8,100 | 27 | #14 |
| what are backlinks | 2,900 | 21 | #8 |
| bounce rate | 2,400 | 24 | #9 |
| web funnel | 2,400 | 31 | #10 |
| how to check the traffic of a website | 2,400 | 39 | #17 |
| estimate traffic on website | 1,900 | 1 | #10 |
| shopify analytics | 1,600 | 8 | #6 |
| cookie banner | 1,000 | 11 | #8 |
| Keyword | Searches / mo | Difficulty | Fathom rank |
|---|---|---|---|
| big sites | 4,400 | 35 | #6 |
| utm generator | 3,600 | 25 | #3 |
| does google know everything | 2,400 | 7 | #9 |
| privacy tools | 1,600 | 19 | #11 |
06 / READING IT
What the gap says about Plausible and Fathom
Plausible's gap is mostly one page. 10 of its 20 biggest keywords at difficulty 40 or under rank with the same backlinks guide, 12,800 searches a month between them. The guide runs 3,753 words and ends on how to measure whether links send traffic, then a trial link. That is a content play an analytics brand can copy. Teach a marketing topic, then show how to measure it.
Some big gaps are noise. "best single page apps" leads at 8,100 searches, but Plausible ranks #14 with an essay arguing you probably do not need one. Fathom's own top row, "big sites" at 4,400, ranks with a blog post on another subject. Volume alone does not pick the article.
Fathom has its own lead. Its UTM builder ranks for 4 of its 20 biggest keywords, 6,480 searches a month, led by "utm generator" at #3. Plausible does not rank for it.
07 / THE BRIEF
Three articles the agent suggested
These are the agent's suggestions from the data above, not a tested plan.
- A guide to a marketing topic that ends in measurement, modeled on the backlinks guide. "what are backlinks" alone has 2,900 searches at difficulty 21, and videos hold the top three Google spots today.
- A bounce rate guide aimed at "bounce rate" itself, 2,400 searches at difficulty 24. Fathom ranks #6 for "bounce rate means" but not for the main term, where Wikipedia and glossaries rank.
- More free tools like the UTM builder, since it already ranks #3 for "utm generator" at 3,600 searches.
08 / COST
What the analysis cost
Each keyword list cost $0.0012, and each Google search and page read $0.0003. The run came to $0.0033. SEO suites include a content gap or keyword gap report in monthly plans, so check current pricing. Per-call pricing suits a gap check before a planning session.
09 / LIMITS
Limits of a keyword gap list
The gap comes from two lists of 20, the biggest keywords each site ranks for at difficulty 40 or under. Fathom's 20th row has 720 searches and every Plausible row has 1,000 or more, so any Plausible keyword Fathom ranked for would have shown up in Fathom's list. The reverse is proven only for the 4 Fathom keywords above 1,000 searches. Ask for more rows to compare deeper into the 1,881 and 1,216.
Database ranks are dated. The keyword list puts Plausible at #8 for "what are backlinks" and #9 for "bounce rate". On 20 October 2026 it was in neither live Google result. Check a gap on live Google before you plan a page around it.
The run compared keywords, not topics, and did not read Fathom's own pages. It did not check backlinks or search intent beyond two Google searches. Volumes are monthly estimates for the US.
10 / VARIATIONS SAME TOOLS. ANOTHER JOB.
Change the market.
Keep the recipe.
Prompts that use the same tools. We have not run these, so check each price in the catalog.
The same list call per site with se: g_de. The comparison and grouping happen in your agent.
One search call per keyword at $0.0003. People also ask comes back in the same call.
11 / GOOD QUESTIONS Good questions,
Good questions,
short answers.
What is a content gap analysis?
A list of searches a competitor ranks for that you do not, filtered by volume and difficulty, then judged for fit. In this run none of plausible.io's 20 biggest keywords at difficulty 40 or under showed up for usefathom.com on Google US.
How do I do a content gap analysis for free?
Search your main topics on Google and note which competitor pages rank where yours do not. It is slow and only covers keywords you think of. A keyword database returns each site's list in one call, $0.0012 on this run.
Can ChatGPT or Claude do a content gap analysis?
They can compare and group keyword lists, and draft briefs from them. They cannot see which domains rank for which keywords on their own. Connect a keyword database and a Google search tool and the lists are real.
How many keywords should a gap analysis compare?
This run compared the 20 biggest per site, $0.0012 a list. That proved 20 gaps for Plausible and 4 for Fathom. Ask for more rows per list to go deeper. The database counted 1,881 and 1,216 keywords.
How is a content gap different from a keyword gap?
A keyword gap is the plain list of keywords. A content gap is the pages you are missing, which may cover several keywords at once. Plausible covers 10 of its 20 biggest keywords with one page.
12 / HOW YOU PAY PREPAID. NO SUBSCRIPTION.
A prepaid balance, spent per call.
Top up by card and your agent spends the balance one call at a time. This run cost $0.0033. Credits never expire, failed calls cost nothing, and every tool in the metered tool catalog shows its price before your agent calls. See per-call pricing.
13 / MORE RUNS SAME BALANCE. ANOTHER JOB.
More MCP use cases.
THE NEXT MOVE IS YOURS.
Copy the prompt.
Run it yourself. ✳
This run cost $0.0033.
No subscription. Credits never expire.