AI Subroutines
Record browser tasks once, replay as deterministic tools with zero token cost and auth propagation.
Opens rtrvr.ai in a new tab.
How the 6.8 was reached
- Quality of output6/10
Vendor claims #1 on Web Bench; independent Chrome Web Store rating is 4.0 with praise for automation and scraping, but no independent benchmark. Source: chromewebstore.google.com
- Ease of use8/10
Free mode starts in Chrome with no card and 100 welcome credits; ad-supported with a daily allowance. Source: rtrvr.ai
- Pricing value7/10
Free ad-supported tier; paid plans $9.99 for 1,000 credits and $29.99 for 3,000 credits; credit usage is harder to predict. Source: rtrvr.ai
- API and integration quality7/10
API, MCP, CLI, SDK templates and WhatsApp available; schedules, triggers and Chrome control need a paid plan. Source: rtrvr.ai
- Solves the problem it claims to solve6/10
Scraping, form filling and monitoring on signed-in sites is described, and 35,000+ builders are reported, but there is little independent proof of results. Source: ai.engineer
6.8/10 is the average of the five criterion scores above. The evidence comes from 4 different sources.Scores come from public evidence (the tool's own pages and documentation, and independent reviews); we do not test every tool hands-on. Scored 29 September 2026, on version 1 of our five-criteria scoring method.
Pricing
- Basic browser automation
- Limited subroutines
- Local execution
- Unlimited subroutines
- Cloud execution
- API access
- Team collaboration
For the full list of what each plan includes, and current prices, see rtrvr.ai.
Key Features
- Browser task recording and replay
- Zero token cost automation
- Authentication propagation
- 100% deterministic execution
- LLM-callable tools
Pros & Cons
Pros
- No ongoing token costs for replays
- Maintains authentication context
- Deterministic results vs traditional agents
- Records once, runs forever
- Works inside webpage context
Cons
- Limited to browser-based tasks
- Relatively new product
- May break with website changes
- Requires initial manual recording
- Documentation appears limited
AI Subroutines tackles a real problem with web automation by eliminating token costs and authentication headaches through in-browser execution. While promising for repetitive web tasks, it's early-stage and success depends on how well it handles website changes.
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