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The Serpex Insider’s Guide

Everything we know about Serpex in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.

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ToolGPAOctober 2026

Serpex

The Insider’s Guide

Pay-as-you-go web search and page extraction API for AI agents

Every plan, grade, refund rule and rival among SERP and SEO data APIs, read from Serpex’s own pages.

Made by Serpex · checked Oct 23, 2026 · toolgpa.com

2.4GPA

Contents

  1. 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
  2. 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
  3. 03What it doesIts main features, where it runs, what it works with and who makes it
  4. 04Where it standsIts grades against its category, and whether to keep it or make your own
  5. 05The alternativesThe tools it is most often weighed against, side by side
  6. 06Quick answersThe questions people ask about it, each answered in a line or two
  7. 07About ToolGPAWho made this guide, what else is on the site, and how to cite it

ToolGPA put this guide together from Serpex’s own pages, its app-store listings and our grades. Every fact in it is on Serpex’s page too, where it is kept up to date. Checked Oct 23, 2026.

Part 01 · Overview

Welcome

What it is, who it suits, its grades and the ten things to know first

2.4

GPA, above 16 of the 38 other SERP and SEO data APIs we grade

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.

To get you started, here are 9 things to know about Serpex, taken from its own pages and our grades.

Judged on how fast a developer gets a first result: TypeScript and Python SDKs, a playground and usage analytics in the dashboard.
From our grade for ease of use
  1. 1

    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.

  2. 2

    What it costs

    Paid plans start at $5 minimum top-up, used as you go ($0.80 per 1,000 credits).

  3. 3

    You can try it first

    200 free credits for new accounts, no credit card required

  4. 4

    It runs on Web

    Web.

  5. 5

    Web search API

    Ranked results with title, URL, snippet and position, with site:, -site: and before:/after: date operators typed into the query.

  6. 6

    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.

  7. 7

    Extract API

    Pull clean, readable content from any list of URLs at one credit per URL, cleaned up for vector databases and RAG pipelines.

  8. 8

    A 2.4 GPA, above 16 of 38

    That is against the other SERP and SEO data APIs we grade, on value, the free plan, features, ease of use and platforms.

  9. 9

    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.

Serpex at a glance

Pricing
Free trial, from $5 minimum top-up, used as you go ($0.80 per 1,000 credits)
Free plan
No
Free trial
200 free credits for new accounts, no credit card required
Runs on
Web
Made by
Serpex
Category
SERP & SEO Data APIs
Our grade
2.4 GPA, fair

The report card

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.

ToolGPA report cardSerpexGraded Oct 23, 2026
SubjectGradeComment
Value for moneyA$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.
Free plan and trialCNo free plan: 200 credits for new accounts with no card.
FeaturesDWeb 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.
Ease of useCJudged 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.
Platforms and integrationsBWeb, with an API, TypeScript and Python SDKs, an MCP server and LangChain examples. No desktop or phone app, so B is the top.
Grade point averageFair, out of 4.02.4

An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.

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 it 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

Good to know

Good for

  • Grounding AI agents and chatbots in current web results
  • RAG pipelines that need the page text behind each result
  • Uneven workloads, since prepaid credits 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.

Part 02 · Pricing

What it costs

Every plan, the free plan, ways to pay less and how prices have moved

$5

To start

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).

  • Starter

    $5

    one-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

    $50

    one-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

    $500

    one-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.

Trying it first

200 free credits for new accounts, no credit card required

Read from serpex.dev on Oct 23, 2026.

Part 03 · Features

What it does

Its main features, where it runs, what it works with and who makes it

1

Place it runs: Web

Pay-as-you-go web search and page extraction API for AI agents. Here is what it does, as its own site describes it, and what it covers: public API, AI features, sERP API.

For SEO it misses the core: you can't choose the engine, country or device, so it reports no Google rankings for any place.
From our grade for 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.

Where it runs

  • Web

What it works with

  • LangChain
  • MCP

Serpex is made by Serpex.

Part 04 · Standing

Where it stands

Its grades against its category, and whether to keep it or make your own

16/38

Other SERP and SEO data APIs it is graded above

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
  • CFree plan and trialAbove 2 of 38
  • DFeaturesAbove 0 of 38
  • CEase of useAbove 0 of 38
  • BPlatforms and integrationsAbove 9 of 38

Keep it, or make your own?

Whether this is something you could build for yourself with an AI app builder, and what you would give up.

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.

Part 05 · Alternatives

The alternatives

The tools it is most often weighed against, side by side

Serper, Brave Search API, Serply, Scavio and SearchCans

The 5 tools Serpex is most often weighed against, with where each one differs from it.

Part 06 · Questions

Quick answers

The questions people ask about it, each answered in a line or two

12

Questions, each answered in a line or two

The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.

Is Serpex free?

No, Serpex is a paid product, but you can try it first. 200 free credits for new accounts, no credit card required.

How much does Serpex cost?

Serpex lists 4 plans. Starter: $5 one-time top-up, used as you go ($0.80 per 1,000 credits).

What platforms does Serpex work on?

Serpex is available on Web.

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.

What does Serpex integrate with?

Serpex's listing names LangChain and MCP. A listing names up to eight integrations, so it may connect to more.

Who makes Serpex?

Serpex is made by a company of the same name.

What are the alternatives to Serpex?

The closest alternatives to Serpex in our directory are Serper, Brave Search API, Serply, Scavio and SearchCans.

How does Serpex compare with other 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.

Could I make my own version of Serpex?

To replace Serpex you would be making search results fetched at scale from many countries without being blocked.

Where this guide comes from

The prices, plans, platforms and features were read from Serpex’s own pages on Oct 23, 2026, and the grades were given on Oct 23, 2026. 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.

Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Serpex. Prices change, so check serpex.dev before you buy.

Part 07 · About

About ToolGPA

Who made this guide, what else is on the site, and how to cite it

3,189

Tools graded, in 94 categories

ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.

Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.

  • 3,189

    tools graded

  • 94

    categories

  • 426

    price changes on record

  • 579

    apps priced in 12 countries

What else is on toolgpa.com

Scan for the live page

Prices and grades as they are today

Quoting this guide?

Please name ToolGPA and link to the live page, so readers can check the figures for themselves:

ToolGPA, "Serpex: The Insider's Guide", checked Oct 23, 2026. https://toolgpa.com/tools/serpex

Know someone choosing between SERP and SEO data APIs?

Send them this guide: toolgpa.com/tools/serpex/guide

ToolGPA elsewhere: youtube.com/@toolgpa

See our other guides

The best-graded SERP and SEO data APIs after Serpex, each with an Insider's Guide of its own.

ToolGPA

Choosing software? Every tool graded, every price dated.

Compare tools at toolgpa.com ›

Everything in this guide is ToolGPA’s own summary of what Serpex’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Serpex is a trademark of its owner, and this guide is not made, paid for or approved by Serpex. Prices and plans change: check serpex.dev before you buy.