Serpex review (2026): is it worth paying for?
Pay-as-you-go web search and page extraction API for AI agents
Serpex report card
Fair · out of 4.0 · graded Oct 23, 2026
Best for web search and page text for AI agents
Serpex is a pay-as-you-go web search API for AI agents that can return the pages behind the top results as markdown, from a $5 top-up that never expires. Each query goes to whichever source is up, and you can't pick the engine, country or device, so it can't tell you what ranks on Google anywhere.
Who Serpex is for
- Fits if you're building a RAG pipeline that needs the page text behind each result
- Works for uneven workloads, since prepaid credits never expire
Who Serpex is not for
- Skip it if you need Google rankings, since you can't pick the engine, country or device
- Watch out: a search with page content costs up to 6 credits for 10 results, and Stealth Mode 5
- Watch out: every top-up is shown against a crossed-out price, such as $5 against $10
- Tight if you want a refund, which runs 7 days and only with no more than 20% of the credits used
Why Serpex gets a 2.4
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- AValue for money$5 is the smallest top-up, under 60% of this category's cheaper quarter, and buys 6,250 credits at $0.80 per 1,000; $50 gets $0.65. Credits never expire.
- CFree plan and trialNo free plan: 200 credits for new accounts with no card.
- DFeaturesWeb search with site and date operators, the top 5 or 10 pages returned as markdown, and an Extract endpoint. For SEO it misses the core: you can't choose the engine, country or device, so it reports no Google rankings for any place.
- CEase of useJudged on how fast a developer gets a first result: TypeScript and Python SDKs, a playground and usage analytics in the dashboard. No rating on record.
- BPlatforms and integrationsWeb, with an API, TypeScript and Python SDKs, an MCP server and LangChain examples. No desktop or phone app, so B is the top.
What these grades rest on. Graded from this listing, whose facts were read from Serpex's own pages on 23 October 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
Make Serpex? Put this grade on your site
Paste this where you want the badge. It links here and follows the grade if it changes. About badges
<a href="https://toolgpa.com/tools/serpex#review"><img src="https://toolgpa.com/badge/serpex.svg" alt="Serpex: 2.4 GPA on ToolGPA" width="196" height="56"></a>Where Serpex stands among SERP and SEO data APIs
Serpex's GPA of 2.4 is higher than 16 of the 38 other SERP and SEO data APIs we grade, and level with 14.
It stands best on value for money (A, above 35 of 38) and worst on features (D, above 0).
Each grade against the category
Every bar is all 39 SERP and SEO data APIs we grade, cut by the letter each got. Serpex’s own letter is outlined.
- AValue for moneyAbove 35 of 38, level with 3
- CFree plan and trialAbove 2 of 38, level with 32
- DFeaturesAbove 0 of 38
- CEase of useAbove 0 of 38, level with 36
- BPlatforms and integrationsAbove 9 of 38, level with 29
Keep Serpex, or make your own?
Keep it
To replace Serpex you would be making search results fetched at scale from many countries without being blocked. That is not a weekend's work, with an AI app builder or without one.
What you could not
- Search results fetched at scale from many countries without being blocked.
- It plugs into other products, LangChain and MCP among them, and has an API.
- AI features, unless you pay a model provider for each request yourself.
What this rests on. Serpex’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Serpex?
Serpex is a web search API built for AI agents and LLM apps. A search returns ranked results with titles, URLs and snippets, and can also fetch the pages behind the top five or ten as clean markdown in the same call; a separate Extract endpoint pulls content from any URL. Each search is routed automatically to whichever source is available, and credits are bought as one-time top-ups that never expire.
Worth knowing
- You cannot choose the search engine or set a country or device: every query is auto-routed, so it does not report what ranks on Google for a location.
- Search and extraction cost 1 credit each; a search with page content costs up to 6 credits for 10 results, and Stealth Mode 5 credits.
- Failed requests are free; refunds run 7 days on credit purchases with no more than 20% of the credits used.
Key features
- Web search API
- Ranked results with title, URL, snippet and position, with site:, -site: and before:/after: date operators typed into the query.
- Search with page content
- Ask for the top 5 or 10 pages to be fetched and returned as markdown with the results, billed only for the pages delivered.
- Extract API
- Pull clean, readable content from any list of URLs at one credit per URL, cleaned up for vector databases and RAG pipelines.
- Stealth Mode
- Render JavaScript-heavy pages in a full browser on Extract requests, at five credits per successful request.
- Automatic routing and retries
- Every search goes to whichever source is healthy, with fallback to another source and retries if one is slow or down.
- SDKs and MCP server
- TypeScript and Python SDKs, an MCP server and LangChain examples, plus a playground and usage analytics in the dashboard.
Serpex pricing
As of Oct 23, 2026, Serpex is a paid product with a free trial, starting at $5 minimum top-up, used as you go ($0.80 per 1,000 credits).
- Starts at
- $5 minimum top-up, used as you go ($0.80 per 1,000 credits)
- Free plan
- None
- Free trial
- 200 free credits for new accounts, no credit card required
| Plan | Price | What you get |
|---|---|---|
| Starter | $5one-time top-up, used as you go ($0.80 per 1,000 credits) | $5 buys 6,250 credits, and top-ups from $5 to $49 get this rate; 5 requests a second. Shown against a crossed-out $10. |
| Standard | $50one-time top-up, used as you go ($0.65 per 1,000 credits) | About 77,000 credits for $50, for top-ups from $50 to $499; 25 requests a second. Shown as 19% off a crossed-out $100. |
| Scale | $500one-time top-up, used as you go ($0.50 per 1,000 credits) | About 1 million credits for $500, for top-ups from $500 to $1,999; 50 requests a second. Shown as 38% off a crossed-out $1,000. |
| Enterprise | Custom | For $2,000 and up: custom rate limits, SLAs and priority support, from $0.20 per 1,000 searches at 10M+ searches a month. |
Read from serpex.dev on Oct 23, 2026. Prices change, so confirm with Serpex before you buy.
Works with
Serpex alternatives
- Serpex vs Serper
Free trial · from $50 one-time
- Serpex vs Brave Search API
Free plan
- Serpex vs Serply
Free trial · from $5 one-time
- Serpex vs Scavio
Free trial · from $24/mo
- Serpex vs SearchCans
Free trial · from $18 one-time
Common questions
Does Serpex have an Android app?
No Android app was listed when its pages were read on Oct 23, 2026. Serpex is listed for Web.
Does Serpex have an iPhone app?
No iPhone app was listed when its pages were read on Oct 23, 2026. Serpex is listed for Web.
Is Serpex open source?
Serpex is not described as open source on its own site, as read on Oct 23, 2026.
Does Serpex have an API?
Yes. Serpex offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 23, 2026.