# Agentrail review (2026): is the free plan enough? > Shows how AI agents use your docs, APIs and MCPs, and where they fail Checked Oct 23, 2026 ยท graded Oct 23, 2026 by ToolGPA. 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. - **Category:** AI Search Visibility (AEO & GEO) - **Made by:** Aeternus Inc. - **Website:** https://www.agentrail.co - **Runs on:** Web - **Who should skip it:** Skip it if you want to know how AI chat answers mention or rank your brand. - **Facts last checked:** Oct 23, 2026 ## Pricing As of Oct 23, 2026, Agentrail has a free plan. - **Pricing model:** Free plan - **Free plan:** Free every month: 100 agent journeys, 10 simulation runs, weekly Agent Readiness scans and recommendations, on 1 product surface. No card needed. - **Free trial:** None listed. | Plan | Price | What you get | | --- | --- | --- | | Free | $0 | 100 agent journeys and 10 simulation runs a month, weekly readiness scans, recommendations, 1 product surface and community support. | Read from https://www.agentrail.co/pricing on Oct 23, 2026. Prices change, so confirm with Agentrail before buying. ## Ways to pay less - **Credits for startups and open-source maintainers** (Startups): Agentrail says early-stage startups and open-source maintainers can apply for credits by contacting the team. Source: https://www.agentrail.co/pricing ## Key features - **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. ## 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. ## ToolGPA grades **GPA: 2.0 out of 4**, graded Oct 23, 2026. 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. - **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. These are ToolGPA's own grades. 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. ## Where it stands among 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. The category's chart of price against score: https://toolgpa.com/charts/ai-visibility ## Keep it, or make your own? **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. - You could not: An AI agent, with the models and the safeguards behind it. - You could not: The same prompts asked of ChatGPT, Perplexity, Gemini and Google's AI answers every day, and the answers kept. - You could not: A tracking script and a database that counts every visit. - You could not: An API that other software can build on. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. **Tags:** AI search visibility, Web analytics, AI agents, Public API ## Alternatives - [Known Agents](https://toolgpa.com/tools/known-agents): Analytics and access control for the AI bots that visit your site. [Compare](https://toolgpa.com/compare/agentrail-vs-known-agents) - [Siteline](https://toolgpa.com/tools/siteline): AI agent traffic analytics with brand visibility tracking in AI chats. [Compare](https://toolgpa.com/compare/agentrail-vs-siteline) - [Profound](https://toolgpa.com/tools/profound): AI search visibility tracking with an AI marketing agent built in. [Compare](https://toolgpa.com/compare/agentrail-vs-profound) - [Scrunch](https://toolgpa.com/tools/scrunch): AI search monitoring plus pages served to AI agents. [Compare](https://toolgpa.com/compare/agentrail-vs-scrunch) ## Sources The prices, plans, platforms and features above were read from these pages on Oct 23, 2026: - https://www.agentrail.co/pricing - https://www.agentrail.co/ - https://www.agentrail.co/about - https://www.agentrail.co/terms Page: https://toolgpa.com/tools/agentrail Listed by ToolGPA (toolgpa.com).