The Agentrail Insider’s Guide
Everything we know about Agentrail 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.
Agentrail
The Insider’s Guide
Shows how AI agents use your docs, APIs and MCPs, and where they fail
Every plan, grade, refund rule and rival among AI search visibility tools, read from Agentrail’s own pages.
Made by Aeternus Inc. · checked Oct 23, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Agentrail’s own pages, its app-store listings and our grades. Every fact in it is on Agentrail’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
2.0
GPA, above 29 of the 157 other AI search visibility tools we grade
Agentrail pieces together what AI agents such as coding assistants were trying to do across a product's website, docs, APIs, SDKs and MCP servers, and shows where those journeys stalled or failed. It also runs real coding agents on your prompts to see whether they pick your product, scans your site the way agents read it, and ranks fixes. It is free up to a monthly allowance and billed per use after that. The company was called GrowthOS before.
To get you started, here are 8 things to know about Agentrail, taken from its own pages and our grades.
It pieces together what a coding agent tried to do across your docs, APIs and MCP servers, and shows where it gave up.
- 1
Best for seeing where coding agents fail on your product
Agentrail is for developer-tool companies.
- 2
There is a free plan
Free every month: 100 agent journeys, 10 simulation runs, weekly Agent Readiness scans and recommendations, on 1 product surface. No card needed.
- 3
It runs on Web
Web.
- 4
Journey reconstruction
Stitches separate requests to the website, docs, APIs, SDKs and MCP tools into the single task an agent was trying to complete.
- 5
Breakpoint detection
Finds where agents retry, loop, give up or fail, and ranks the problems by how many journeys they affect.
- 6
Simulations
Runs real coding agents on your prompts in clean sandboxes to see whether they choose your product and finish the task.
- 7
A 2.0 GPA, above 29 of 157
That is against the other AI search visibility tools we grade, on value, the free plan, features, ease of use and platforms.
- 8
Keep it
To replace Agentrail you would be making an AI agent, with the models and the safeguards behind it. That is not a weekend's work, with an AI app builder or without one.
Agentrail at a glance
- Pricing
- Free plan
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Web
- Made by
- Aeternus Inc.
- Category
- AI Search Visibility (AEO & GEO)
- Our grade
- 2.0 GPA, fair
The report card
Best for seeing where coding agents fail on your product
Agentrail is for developer-tool companies. It pieces together what a coding agent tried to do across your docs, APIs and MCP servers, and shows where it gave up. It doesn't track what ChatGPT or other AI chats say about your brand, the free allowance covers one product surface and 100 journeys, and every journey and simulation after that is billed.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | C | No monthly plan: after the free allowance it's $0.10 per agent journey and $1 per simulation, with volume tiers and an optional spend cap. So 1,000 journeys a month comes to about $90 before discounts, in the category's usual range. |
| Free plan and trial | C | Free every month with no card: 100 agent journeys, 10 simulations, weekly readiness scans and fixes, on 1 product surface. Any product with real agent traffic will pass 100 journeys, and nothing rolls over. |
| Features | C | Journey stitching across docs, APIs, SDKs and MCPs, failure detection, sandboxed agent runs, readiness scans and fixes with a prompt or pull request. It does that job fully, but it's a smaller one, and it doesn't track AI chat answers. |
| Ease of use | C | No rating on record. How it connects depends on your stack, and the vendor only says it works from signals in your existing systems, so expect some engineering time. |
| Platforms and integrations | C | Web only, and no integrations are named in the listing, though it looks at how agents use your own APIs, SDKs and MCP servers. |
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 Agentrail is for
- Fits if you make a developer tool and more of your users now arrive through coding agents
- Works for teams fixing docs, sign-in or an MCP server for agent use
Who it is not for
- Skip it if you want to know how AI chat answers mention or rank your brand
- Not for you if you sell to consumers rather than developers
- Tight if you have heavy agent traffic and a fixed budget: it's $0.10 per journey and $1 per simulation
- Too light for more than one product on the free tier, which covers 1 surface and 100 journeys that don't roll over
- Watch out: setup depends on your stack and no integrations are named, so expect engineering time
Good to know
Good for
- Developer-tool companies whose users increasingly arrive through coding agents
- Product teams improving docs, auth and MCP servers for agent use
- Teams that want to start free and pay only for usage
Worth knowing
- Beyond the free allowance it bills $0.10 per agent journey and $1 per simulation run, with graduated volume tiers and an optional monthly spend cap.
- It studies agents using your product; it does not track how AI chat answers mention or rank your brand.
- Free allowances reset on the 1st of each month and do not roll over; the free tier covers one product surface.
- How it connects depends on your stack; the vendor says it works from signals in your existing systems.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
1
plan
Agentrail has a free plan.
Free
$0
100 agent journeys and 10 simulation runs a month, weekly readiness scans, recommendations, 1 product surface and community support.
The free plan
Free every month: 100 agent journeys, 10 simulation runs, weekly Agent Readiness scans and recommendations, on 1 product surface. No card needed.
Read from agentrail.co on Oct 23, 2026.
Ways to pay less
Startups
Credits for startups and open-source maintainers
Agentrail says early-stage startups and open-source maintainers can apply for credits by contacting the team.
Stated on agentrail.co
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
Shows how AI agents use your docs, APIs and MCPs, and where they fail. Here is what it does, as its own site describes it, and what it covers: public API, AI agents, web analytics, AI search visibility.
It does that job fully, but it's a smaller one, and it doesn't track AI chat answers.
- Journey reconstruction
- Stitches separate requests to the website, docs, APIs, SDKs and MCP tools into the single task an agent was trying to complete.
- Breakpoint detection
- Finds where agents retry, loop, give up or fail, and ranks the problems by how many journeys they affect.
- Simulations
- Runs real coding agents on your prompts in clean sandboxes to see whether they choose your product and finish the task.
- Agent Readiness scans
- Weekly scans of the website, docs and app as agents see them, with and without JavaScript, each finding with evidence and a fix prompt.
- Recommendations
- Ranked fixes across docs, authentication, APIs, SDKs and MCPs, each with a prompt or pull request to ship it.
Where it runs
- Web
What it works with
Its own pages name no integrations.
Agentrail is made by Aeternus Inc.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
29/157
Other AI search visibility tools it is graded above
Agentrail's GPA of 2.0 is higher than 29 of the 157 other AI search visibility tools we grade, and level with 38.
Each grade against the category
Every bar is all 158 AI search visibility tools we grade, cut by the letter each got. Agentrail’s own letter is outlined.
- CValue for moneyAbove 19 of 157
- CFree plan and trialAbove 63 of 157
- CFeaturesAbove 6 of 157
- CEase of useAbove 0 of 157
- CPlatforms and integrationsAbove 0 of 157
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 Agentrail you would be making an AI agent, with the models and the safeguards behind it. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 90 of the 157 other AI search visibility tools grade higher.
What you could not
- An AI agent, with the models and the safeguards behind it.
- The same prompts asked of ChatGPT, Perplexity, Gemini and Google's AI answers every day, and the answers kept.
- A tracking script and a database that counts every visit.
- An API that other software can build on.
What this rests on. Agentrail’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
Known Agents, Siteline, Profound and Scrunch
The 4 tools Agentrail is most often weighed against, with where each one differs from it.
- 2.6GPA
Known Agents
Free plan · from $25/mo
Analytics and access control for the AI bots that visit your site.
- Agentrail also covers AI agents.
- 2.2GPA
Siteline
Free plan · from $49/mo
AI agent traffic analytics with brand visibility tracking in AI chats.
- Agentrail also covers AI agents.
- Siteline also covers reports.
- 2.2GPA
Profound
Free trial · from $99/mo
AI search visibility tracking with an AI marketing agent built in.
- Agentrail has a free plan. Profound does not, though it has a free trial.
- Profound also covers content optimization.
- 1.8GPA
Scrunch
Free trial · from $250/mo
AI search monitoring plus pages served to AI agents.
- Agentrail has a free plan. Scrunch does not, though it has a free trial.
- Agentrail also covers AI agents.
- Scrunch also covers site audit and content optimization.
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 Agentrail free?
Agentrail has a free plan. Free every month: 100 agent journeys, 10 simulation runs, weekly Agent Readiness scans and recommendations, on 1 product surface.
How much does Agentrail cost?
Agentrail lists one plan. Free: $0.
What platforms does Agentrail work on?
Agentrail is available on Web.
Does Agentrail offer any discounts?
Agentrail publicly lists the following: Credits for startups and open-source maintainers.
Does Agentrail have an Android app?
No Android app was listed when its pages were read on Oct 23, 2026. Agentrail is listed for Web.
Does Agentrail have an iPhone app?
No iPhone app was listed when its pages were read on Oct 23, 2026. Agentrail is listed for Web.
Is Agentrail open source?
Agentrail is not described as open source on its own site, as read on Oct 23, 2026.
Does Agentrail have an API?
Yes. Agentrail offers a public API, according to its own site.
Who makes Agentrail?
Agentrail is made by Aeternus Inc.
What are the alternatives to Agentrail?
The closest alternatives to Agentrail in our directory are Known Agents, Siteline, Profound and Scrunch.
How does Agentrail compare with other AI search visibility tools?
Agentrail's GPA of 2.0 is higher than 29 of the 157 other AI search visibility tools we grade, and level with 38.
Could I make my own version of Agentrail?
To replace Agentrail you would be making an AI agent, with the models and the safeguards behind it.
Where this guide comes from
The prices, plans, platforms and features were read from Agentrail’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 Agentrail'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 Aeternus Inc. Prices change, so check agentrail.co 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
- Agentrail, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/agentrail
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
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, "Agentrail: The Insider's Guide", checked Oct 23, 2026. https://toolgpa.com/tools/agentrail
Know someone choosing between AI search visibility tools?
Send them this guide: toolgpa.com/tools/agentrail/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded AI search visibility tools after Agentrail, each with an Insider's Guide of its own.
- AI Search Visibility (AEO & GEO) Insider's GuideEvery one of the 158 AI search visibility tools we grade, compared
- geoSurge Insider's GuideFree AI visibility tracking that runs on your own AI subscriptions3.0 GPA
- llms-txt.io Insider's Guidellms.txt generator, validator, API and auto-updating managed files3.0 GPA
- Rankscale AI Insider's GuideCredit-based AI visibility tracker covering 17+ AI engines3.0 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Agentrail’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. Agentrail is a trademark of its owner, and this guide is not made, paid for or approved by Aeternus Inc. Prices and plans change: check agentrail.co before you buy.