CoTester
Enterprise AI testing agent with self-healing execution across web, mobile, and API.
About
CoTester is TestGrid's AI testing agent: you onboard it like a team member, assign it testing tasks in plain language, and it writes, executes, and maintains test cases across web, mobile, and API surfaces. It uses a multimodal vision-language model to read application screens and Jira specs, converts them into executable scripts, and runs them on TestGrid's real browsers and devices. The AgentRx self-healing layer rewrites scripts on the fly when UI elements, layouts, or workflows change, and no-code, low-code, and pro-code modes cover mixed-skill teams.
TestGrid is a bootstrapped, profitable company reporting 20+ Fortune 100 clients and over $15M in annual revenue, and CoTester ships purpose-built modules such as end-to-end ServiceNow testing. CoTester itself is a paid enterprise add-on with custom pricing, so small teams should check TestGrid's tiers before planning around it. The autonomous-testing claims are vendor-reported; what is independently documented is a real enterprise platform with a real customer base.
What it can do
- Natural-language test authoring from specs and user stories
- Multimodal vision-language UI interpretation
- AgentRx self-healing during execution
- No-code, low-code, and pro-code modes
- Execution on real browsers and mobile devices
- Purpose-built ServiceNow module testing
- CI/CD integration with human-in-the-loop guardrails
- On-premise or private cloud deployment
Setup
- Sign up for TestGrid and request a CoTester demo or trial.
- Onboard the agent with your product context: user stories, docs, or URLs.
- Review and approve the generated test cases with your QA team.
- Connect CI/CD triggers and set guardrails for human-in-the-loop review.
Prerequisites
TestGrid account; CoTester is a paid add-on (demo/custom pricing).
Use cases
Works with
Trust score — 7/10
Scored 7/10 (TIER verified, metrics-v1). Evidence: bootstrapped TestGrid reports $15M+ revenue, profitability, and 20+ Fortune 100 clients (startuppedia); ServiceNow module launch announced Oct 2025; AgentRx self-healing and VLM approach documented in vendor materials and third-party roundups. Strengths: real enterprise customer base, guardrailed human-in-the-loop design. Docked for: (1) autonomous-test-quality claims are provider-reported, not independently benchmarked; (2) paid add-on with custom pricing, no self-serve tier. License: proprietary.
How the trust score is built
Full methodology →- Adoption · stars/downloads, log-scaled vs peers
- 7.0/10
- Maintenance · recency, releases, issue load
- 8.0/10
- Openness · license + docs
- 4.0/10
- Manual review · sanity read + red-flag check
- 7.0/10
- · TestGrid is bootstrapped, profitable, reports $15M+ revenue and 20+ Fortune 100 clients (startuppedia)
- · AgentRx self-healing and multimodal VLM approach documented in vendor materials and roundups
- · Purpose-built ServiceNow module testing launched Oct 2025 (GlobeNewswire)
- · No-code/low-code/pro-code modes with human-in-the-loop guardrails
- · Paid enterprise add-on with custom pricing, no self-serve tier
- · Autonomous-test-quality claims are provider-reported, not independently benchmarked
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.