All Posts

• Demystifying Playwright Test Agents' seed.spec.ts: What I Learned from Reading the MCP Code

  Posted on: 12/5/2025

  Understanding the role of seed.spec.ts in Playwright Test Agents by diving into the MCP source code to see how AI agents use it for browser setup.

• Deciphering GraphQL: A Deep Dive into Type Merging and Schema Stitching

  Posted on: 9/27/2023

  A detailed walkthrough of GraphQL Type Merging in Schema Stitching, explaining how multiple schemas with the same types are merged at the gateway level.

• Cross Module Transaction with Prisma

  Posted on: 6/14/2022

  How to write cross-module transactions in Node.js using Prisma and cls-hooked for a layered architecture.

• Policy enforcement with Vue.js and OPA WebAssembly

  Posted on: 12/22/2019

  How to integrate OPA WebAssembly with Vue.js to enforce policies in the front-end using Rego.

• Continuously Enforce Policies on Your Configs with Conftest and CircleCI

  Posted on: 10/22/2019

  Learn how to use conftest-orb to continuously enforce policies on your configuration files in CircleCI pipelines using Open Policy Agent and Rego.

• Check if key exists in object in Rego

  Posted on: 10/1/2019

  A quick tip on how to check if a key exists in an object using Rego, and why the '_ = x[k]' syntax is necessary to handle false values correctly.

• Digging into API Authorization with OPA

  Posted on: 7/2/2019

  Learn how to implement fine-grained API authorization using Open Policy Agent (OPA) by migrating from a traditional if-statement approach to a policy-as-code solution.