https://apxy.dev/blog Tutorials, insights, and guides on network debugging, API mocking, and AI-assisted development. en-us Thu, 16 Apr 2026 06:59:06 GMT https://apxy.dev/blog/why-your-ai-coding-agent-needs-network-visibility https://apxy.dev/blog/why-your-ai-coding-agent-needs-network-visibility AI coding agents are excellent at reading code. They cannot see the network. That gap is where most agent-assisted debugging sessions get stuck. Here is how to close it. Wed, 01 Apr 2026 00:00:00 GMT team@apxy.dev (APXY Team) ai-agents network-debugging cursor claude developer-tools https://apxy.dev/blog/why-local-first-api-tools-are-winning https://apxy.dev/blog/why-local-first-api-tools-are-winning A wave of developers is moving away from cloud-hosted API tools. Pricing changes, data sovereignty concerns, and the rise of CLI-native workflows are driving a shift toward tools that live on your machine and sync through Git. Wed, 17 Sep 2025 00:00:00 GMT team@apxy.dev (APXY Team) local-first developer-tools insights privacy cli https://apxy.dev/blog/what-is-api-mocking https://apxy.dev/blog/what-is-api-mocking API mocking lets you simulate a real API without calling it. This guide explains what it is, why developers use it, when to mock vs when not to, and how to get started in under five minutes. Wed, 18 Mar 2026 00:00:00 GMT team@apxy.dev (APXY Team) api-mocking guide testing frontend development https://apxy.dev/blog/validate-api-contracts-with-openapi-and-apxy https://apxy.dev/blog/validate-api-contracts-with-openapi-and-apxy Import an OpenAPI spec into APXY and validate your live traffic against it. Find requests your code sends that don't match the spec — before they become production bugs. Wed, 15 Oct 2025 00:00:00 GMT team@apxy.dev (APXY Team) openapi schema-validation guide api-testing quality https://apxy.dev/blog/token-optimization-shrinking-api-traffic-for-ai-agent-context https://apxy.dev/blog/token-optimization-shrinking-api-traffic-for-ai-agent-context Raw HTTP traffic is verbose. A single request-response pair can consume thousands of tokens. APXY's output formats compress traffic by 60–90% while keeping the information your agent actually needs to diagnose issues. Wed, 12 Nov 2025 00:00:00 GMT team@apxy.dev (APXY Team) token-optimization ai-agents guide context-window developer-tools https://apxy.dev/blog/the-real-cost-of-flaky-api-tests https://apxy.dev/blog/the-real-cost-of-flaky-api-tests A test that sometimes passes and sometimes fails is not a test -- it is noise. Here is what flaky API tests actually cost your team, and what to do about it. Wed, 04 Mar 2026 00:00:00 GMT team@apxy.dev (APXY Team) api-testing ci-cd reliability insights developer-productivity https://apxy.dev/blog/scripting-api-responses-with-javascript-in-apxy https://apxy.dev/blog/scripting-api-responses-with-javascript-in-apxy Static mock rules return the same response every time. When you need to inject dynamic data, modify responses conditionally, or simulate real API behavior like rate limiting, APXY's JavaScript scripting engine handles it. Wed, 01 Oct 2025 00:00:00 GMT team@apxy.dev (APXY Team) tutorial scripting javascript advanced interceptors https://apxy.dev/blog/record-and-replay-api-traffic-for-regression-testing https://apxy.dev/blog/record-and-replay-api-traffic-for-regression-testing Record real API traffic once, convert it to mock rules, and replay those exact responses against future code changes. Catch regressions before they reach production without maintaining a live test environment. Wed, 03 Sep 2025 00:00:00 GMT team@apxy.dev (APXY Team) tutorial regression-testing record-replay api-testing automation https://apxy.dev/blog/http-status-codes-explained https://apxy.dev/blog/http-status-codes-explained A practical reference to HTTP status codes for developers who build and debug APIs. What each code means, when APIs return it, and how to respond to it in your code. Wed, 18 Feb 2026 00:00:00 GMT team@apxy.dev (APXY Team) http api guide debugging reference https://apxy.dev/blog/how-to-mock-a-rest-api-in-5-minutes https://apxy.dev/blog/how-to-mock-a-rest-api-in-5-minutes Create a fully functional mock REST API in under five minutes. No code, no config files, no server to maintain. One command to install, one command to add a rule. Wed, 04 Feb 2026 00:00:00 GMT team@apxy.dev (APXY Team) tutorial api-mocking rest-api getting-started https://apxy.dev/blog/how-to-debug-a-failing-api-call-with-apxy https://apxy.dev/blog/how-to-debug-a-failing-api-call-with-apxy A step-by-step walkthrough of the capture-inspect-replay loop. Learn how to track down a failing HTTP request, understand exactly why it failed, and prove your fix worked. Wed, 21 Jan 2026 00:00:00 GMT team@apxy.dev (APXY Team) tutorial debugging http proxy getting-started https://apxy.dev/blog/from-postman-to-proxy https://apxy.dev/blog/from-postman-to-proxy Postman is great for constructing requests manually. It does not tell you what your application actually sent. When the bug is between your code and the network, you need a proxy. Wed, 07 Jan 2026 00:00:00 GMT team@apxy.dev (APXY Team) postman api-testing debugging proxy developer-tools https://apxy.dev/blog/debugging-webhooks-locally https://apxy.dev/blog/debugging-webhooks-locally Webhooks are notoriously hard to debug locally. APXY lets you intercept incoming webhook payloads, inspect them in real time, replay them without retriggering the source, and mock the endpoint for automated testing. Wed, 24 Dec 2025 00:00:00 GMT team@apxy.dev (APXY Team) tutorial webhooks debugging stripe github https://apxy.dev/blog/debug-api-errors-in-ci-cd-pipelines https://apxy.dev/blog/debug-api-errors-in-ci-cd-pipelines API test failures in CI are notoriously hard to debug. You cannot reproduce the environment locally, logs are incomplete, and re-running the pipeline costs time. Running APXY alongside your test suite captures the exact traffic that caused the failure. Wed, 29 Oct 2025 00:00:00 GMT team@apxy.dev (APXY Team) tutorial ci-cd debugging testing automation https://apxy.dev/blog/capturing-https-traffic-from-cursor-and-ai-agents https://apxy.dev/blog/capturing-https-traffic-from-cursor-and-ai-agents AI coding agents make real API calls behind the scenes. Here is how to route Cursor, Claude Code, and other AI tools through APXY so you can see exactly what they are sending and receiving. Wed, 10 Dec 2025 00:00:00 GMT team@apxy.dev (APXY Team) tutorial ai-agents cursor claude https getting-started https://apxy.dev/blog/apxy-vs-mitmproxy-when-you-need-mocking-too https://apxy.dev/blog/apxy-vs-mitmproxy-when-you-need-mocking-too mitmproxy is one of the best open-source tools for HTTPS interception. But it stops there. If you also need mocking, a Web UI, or a workflow built for AI-assisted development, the tool gap becomes real. Wed, 26 Nov 2025 00:00:00 GMT team@apxy.dev (APXY Team) comparison mitmproxy api-mocking proxy developer-tools