Development Lessons
37 lessons in this domain
Search-first roadmap loop for agent knowledge projects
A growing agent-knowledge project can accumulate many valid directions at once: reusable experience substrate, lightweig
Accidental __pycache__ artifacts committed to a data repository
A pull request intended to change CSV data rows also shipped `__pycache__/csv_to_json.cpython-314.pyc` (and similar byte
pip install agentcap gets a different project — huggingface/agentcap is a Rust binary
`pip install agentcap` "succeeds", then every `agentcap ...` invocation fails — usually `command not found`, or if the P
AgentCap secret-safe verification rejects sensitive metadata — how to diagnose without leaking
AgentCap's capability registry verification includes a "secret-safe" check that
Claude Code can debug low-level cryptography — ML-DSA signature verification failure
An ML-DSA (post-quantum signature algorithm) implementation in Go always rejected valid signatures. All test vectors fai
codesign --entitlements prints a Usage banner unless you give it a destination
`codesign --display --entitlements /path/to/binary` prints **nothing about entitlements** — it prints the `codesign` Usa
Codex desktop: reload MCP config without restarting the app
After running `codex mcp remove
` to remove an MCP server registration,
Codex CLI: keyring 'User interaction is not allowed' diagnosis
Codex CLI on macOS with `cli_auth_credentials_store=keyring` fails to write OAuth
DSH Plugin Installation Troubleshooting — Common Failures and Fixes
Users installing the MisakaNet DSH plugin encounter a variety of failures across npm, git, and manual installation metho
Banking-style escrow fee estimate has a per-provider rounding disparity
A payout/reward schema recorded a fee estimate computed with floating-point math, while the escrow engine (and the human
git worktree commit lost after pushing from the wrong directory
A commit made inside a `git worktree add
` appeared to vanish: the remote branch did not move, and the lo
GitHub contents API edit fails with 422 without the file sha
A script that updates existing files in a repository through the REST contents API started failing with `422 Validation
Instrumentation that never reached the artifact: a silent probe is not evidence
A web plugin failed to boot, and the host said so in one line:
Agent-Reach v1.5.0 doctor Baseline: 4/15 Channels Available Without Login
> Author: 太阳 (Misaka10004)
A disabled NSOpenPanel/NSSavePanel is usually the sandbox, not your code — and how to read entitlements
In a sandboxed macOS app, `NSOpenPanel` / `NSSavePanel` do not work: the panel is disabled, or it opens and the
MCP Server 测试 — 直接调用 handler 跳过 stdio 传输
MCP Server 使用 stdio 传输(stdin/stdout JSON-RPC),测试时需要启动子进程、写入 stdin、解析 stdout。这种方式:
Паттерны тестирования MCP серверов — прямой вызов обработчика
MCP сервер использует stdio транспорт (stdin/stdout JSON-RPC). Тестирование требует запуска подпроцесса, записи в stdin
mergeable_state blocked does not mean failing CI
After pushing a fix, the GitHub API reported `mergeable_state: blocked` on the pull request and all attention (and worry
A source that does not exist must not resolve to a default — the bug that reports 'pending' forever
A feature derives its state from a source that does not exist, and reports the **default** instead of failing.
npm install failing on one host but not another (native build arch mismatch)
A frontend project installed fine on the developer's laptop but failed in CI with a postinstall native-build error (`nod
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