Kumar argues that having powerful tools does not guarantee high-quality work, and distinguishes craft from slop. He defines taste as a trainable human skill for quickly judging quality against external standards.
The Critical Advantage With AI
Speaker
Tejas Kumar, an AI engineer at IBM Research, presents at Agent Conf 2026 with Callstack on developing human taste to improve agent-built software.
Kumar identifies three ingredients: immersion in high-quality examples, valid cues that connect first impressions to how something performs, and corrective feedback from someone more experienced. His computer mouse example shows why looking at many designs is not enough without using them and learning from informed critique.
Kumar contrasts the friction of ordinary websites with the ease of asking an agent for information, while noting that a plain text answer can lose a company’s branding and design. He demonstrates an MCP App that connects a schedule tool to an HTML resource, letting an MCP client render interactive, branded speaker and schedule details inside ChatGPT.
Kumar says that broad access to creation tools makes the quality of what people build a key differentiator. He encourages teams to apply immersion, valid cues, and corrective feedback, and mentions IBM’s coding agent, Bob, as an effort to make an agent more considered.
Takeaways
- Study strong examples regularly, then use the products to learn how design choices perform.
- Pair first impressions with observable evidence about how a product works.
- Build regular critique from experienced colleagues into the creation process.
- Use MCP Apps to give agent interactions branded, interactive interfaces when plain text loses useful context.
- Treat quality as a skill teams can improve, even as creation tools become more accessible.
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What was claimed 5
- role atTejas Kumar is AI engineer at
IBM“I work as an AI engineer at IBM.”
YouTube Verified3 sources· Talk
- feature
IBM: Trains models and builds harnesses“where we train models, build harnesses”
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- integrates with
“ChatGPT released the Apps SDK, a way to create these interactive MCP Apps”
3:38inMCP Apps: Primitives, discovery, and the Future of SoftwareYouTube Verified2 sources· Talk
- featureMCP app: Can return interactive HTML UI for an agent client to render
“The MIME type is text/html with the profile mcp-app. That says I'm not returning text; I'm returning UI.”
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- built
“In practice at IBM, we make our own coding agent. It's called Bob”
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