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My MCP Server Has 8 Tools and Zero Log Lines. Diagnosing a Failure Meant Guessing From the Outside.

Back in July my scheduled DEV.to publishing run failed at the very first step — the quota check couldn't reach dev.to:443 at all. Diagnosing it took manually running curl $HTTPS_PROXY/__agentproxy/status from inside the session and reading a proxy diagnostic by hand, because nothing in my own code had written down what actually happened. Not which host, not which of my two HTTP helper functions made the call, not a timestamp, nothing. The failure was real and the fix (get dev.to added to the environment's egress allowlist) was correct, but I found it by treating my own server as a black box and probing it from outside, which is exactly backwards for code I wrote myself. eight tools, one shared blind spot server.py is an 8-tool FastMCP server: three GitHub tools, four DEV.to tools, one that shells out to claude -p . Every HTTP-calling tool routes through one of two helpers: def _gh ( path , method = " GET " , data = None ): req = urllib . request . Request ( f " https://api.github.com { path } " , method = method ) req . add_header ( " Authorization " , f " token { os . environ [ ' GITHUB_TOKEN ' ] } " ) req . add_header ( " Accept " , " application/vnd.github.v3+json " ) if data : req . add_header ( " Content-Type " , " application/json " ) req . data = json . dumps ( data ). encode () with urllib . request . urlopen ( req ) as r : return json . loads ( r . read ()) def _dev ( path , method = " GET " , data = None ): req = urllib . request . Request ( f " https://dev.to/api { path } " , method = method ) req . add_header ( " api-key " , os . environ [ " DEV_TO_API " ]) req . add_header ( " Content-Type " , " application/json " ) req . add_header ( " User-Agent " , " developer-presence-mcp/1.0 " ) if data : req . data = json . dumps ( data ). encode () with urllib . request . urlopen ( req ) as r : return json . loads ( r . read ()) Neither one logs anything. When urlopen raises, the caller — whichever @mcp.tool() function invoked it — sees a bare urllib.error.HTTPEr

2026-07-20 原文 →
AI 资讯

ReflectionCLI 2.0: a local-first thinking CLI for AI-assisted development

The original concept behind this tool won the runner-up award for the Github CLI Challenge earlier this year. As a reminder, ReflectCLI is a tool to promote thoughtful coding through structured reflection. What does it do? Before each commit, answer reflective questions to build your personal developer knowledge dataset. The tool is local-first by design. It stores everything locally inside the current Git repo: .git/git-reflect/log.json No account, no cloud sync, no authentication, and no external AI API call. Why build it? AI-assisted development is powerful, but it can encourage cognitive offloading, letting tools do the thinking instead of developing deeper understanding. git-reflect interrupts this pattern by making reflection part of your workflow. Each answer becomes part of your personal knowledge base, documenting not just what you built, but why you built it that way and what you learned. Over time, this dataset reveals patterns in your thinking and helps you grow as a developer. If you want to read about the original tool, check out my previous post here . Since building the original version, I've spent months researching how AI changes the way developers learn, reason, and make technical decisions. Many of the ideas from those discussions have now been incorporated into ReflectionCLI 2.0. What started as a simple Git pre-commit reflection hook has evolved into a local-first thinking tool for developers working alongside AI assistants. What's New Comprehension debt tracking You can now record artifacts you shipped but don't fully understand yet. reflection debt add "Understand why the cache invalidates on user updates" \ --project api \ --tags cache,ai \ --context "AI generated most of the invalidation logic" These artifacts can easily be retrieved and resolved later. reflection debt list reflection debt resolve debt-001 Explain-back mode This workflow focuses on active recall and asks a series of questions to assess your ability to explain the piece of c

2026-07-20 原文 →
AI 资讯

Perplexity's Agent Skills Need an Undo Path Before They Need More Skills

Perplexity added "Skills" to its Agent API, letting developers compose built-in and custom skills for more complex agent outputs. More skills mean more actions, and more actions mean more ways to produce an irreversible change. Before you add a fifth skill to your agent, make sure the first four have an undo path. The undo problem An agent skill that writes, sends, publishes, or deploys is an irreversible action if there is no rollback. The more skills an agent has, the more irreversible actions it can take in a single session. A chain of skills (research → draft → format → publish) can complete before a human notices the first step was wrong. The undo contract Every agent skill should declare: { "skill_name" : "publish_to_blog" , "action_type" : "write" , "reversible" : true , "undo_method" : "set_published_false" , "undo_timeout_seconds" : 3600 , "undo_side_effects" : [ "SEO index will retain the URL for up to 24h" ] } If reversible is false , the skill should require explicit human approval before execution. A skill registry with undo support # skill_registry.py """ Registers agent skills with undo metadata. Blocks irreversible skills from running without explicit approval. """ from dataclasses import dataclass from typing import Optional , Callable import json @dataclass class Skill : name : str action_type : str # "read", "write", "send", "deploy" reversible : bool undo_fn : Optional [ Callable ] = None undo_timeout_seconds : int = 3600 side_effects : str = "" requires_approval : bool = False class SkillRegistry : def __init__ ( self ): self . skills = {} self . execution_log = [] def register ( self , skill : Skill ): # Irreversible write/send/deploy skills require approval if not skill . reversible and skill . action_type in ( " write " , " send " , " deploy " ): skill . requires_approval = True self . skills [ skill . name ] = skill def execute ( self , skill_name : str , inputs : dict , approved : bool = False ): skill = self . skills . get ( skill_name ) i

2026-07-20 原文 →
AI 资讯

A Non-Developer Agent Output Needs a Verification UI, Not Just a Download Button

Cursor's "Sand" project targets non-developers. Anthropic's Claude Cowork runs cross-device. OpenAI's ChatGPT Work delivers documents, spreadsheets, and presentations. When an agent produces a deliverable for someone who cannot read the code, the verification interface matters more than the output format. A download button is not verification. The problem When a developer reviews agent output, they can read the diff, run the tests, and check the types. When a non-developer receives an agent-produced spreadsheet or document, they have no equivalent verification path. They either trust it completely or reject it completely. Neither is useful. What a verification UI needs Element Purpose Implementation Source list Show what inputs the agent used Links to source documents with timestamps Confidence indicator Flag low-confidence outputs Per-section confidence derived from source coverage Change highlights Show what the agent generated vs. copied Diff view between source and output Audit trail Record who requested what and when Append-only log with request ID, timestamp, and result hash Rejection path Let the user say "this is wrong" without starting over Feedback record linked to specific output section A minimal verification component <!-- agent-output-verification.html --> <!DOCTYPE html> <html lang= "en" > <head> <meta charset= "UTF-8" > <title> Agent Output Verification </title> <style> .verification-card { border : 1px solid #ddd ; border-radius : 8px ; padding : 16px ; margin : 8px 0 ; font-family : system-ui , sans-serif ; } .source-list { list-style : none ; padding : 0 ; } .source-list li { padding : 4px 0 ; border-bottom : 1px solid #eee ; } .confidence-low { color : #c0392b ; font-weight : bold ; } .confidence-medium { color : #e67e22 ; } .confidence-high { color : #27ae60 ; } .reject-btn { background : #fff ; border : 1px solid #c0392b ; color : #c0392b ; padding : 4px 12px ; border-radius : 4px ; cursor : pointer ; } .reject-btn :hover { background : #c0392b

2026-07-20 原文 →
AI 资讯

Copilot's Organization-Level Custom Agents Need a Diff Review Before Rollout

Visual Studio 2026's July update added organization-level custom agents for GitHub Copilot. An organization owner can now define a custom agent that every repository in the org automatically detects and offers in the agent selector. This is powerful and introduces a rollout risk: a single agent definition affects every developer in the organization simultaneously. The rollout problem When an org-level agent is published, every developer working in any repo in that org sees it in their agent selector. If the agent definition contains an incorrect instruction, a broken tool reference, or an overly permissive scope, it affects all developers at once. There is no canary by default. The agent definition review checklist Before publishing an org-level custom agent, review its definition against this checklist. 1. Instruction review # agent-definition.yml (example structure) name : org-code-reviewer description : Reviews PRs for security and style instructions : | Review each file change. Flag: - SQL injection in string concatenation - Missing input validation on public endpoints - Hardcoded credentials Do not modify files. Only comment. tools : - read_file - search_code - post_comment scope : organization Check: [ ] Instructions are specific enough to be testable ("flag SQL injection in string concatenation" not "review for security") [ ] Instructions do not conflict with existing repository-level AGENTS.md files [ ] The agent does not claim capabilities it does not have (e.g., "run tests" when no tools entry supports it) 2. Tool surface audit # Extract all tool references from the agent definition rg -n 'tools:' agent-definition.yml -A 20 | grep '^\s*-' For each tool: What resource does it access? (filesystem, network, repository API) Is it read-only or read-write? Does it require elevated permissions beyond the developer's own role? A post_comment tool can create noise across every PR. A write_file tool can modify code in every repo. Audit accordingly. 3. Canary test Be

2026-07-20 原文 →
AI 资讯

Just shipped @modyra/core: a tiny state layer for complex frontends

I've just published a small npm package called @modyra/core that came out of a very specific pain: handling "slightly complex" app state in frontend projects without ending up with a mess of context, custom hooks and scattered stores. The focus of the package is: Minimal API, all in TypeScript, no hidden magic No heavy runtime: just tools to model the core of your app as a set of state modules Designed to plug into React/Angular/vanilla JS without forcing you to rewrite everything The idea is to treat your app's domain as a set of "core units" with clear responsibilities: each unit exposes state, actions and rules, and the rest of the app simply consumes them. It came out of a few projects where Redux/Zustand/signals etc. were fine, but started to feel either too verbose or not very close to the actual business domain. If you feel like taking a look and tearing it apart, feedback (including harsh ones) is very welcome: naming, API design, examples - everything is still fresh enough to change. And if you think the approach is worth exploring, a star on GitHub would really help me keep pushing the project forward.

2026-07-20 原文 →
AI 资讯

The Download: AI hiring biases, and weather data sabotage

This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. AI is more likely than humans to form biases when hiring The next time you apply for a job, AI may screen your résumé before any human sees it. But there’s…

2026-07-20 原文 →
AI 资讯

Presentation: Platform Engineering for Everyone - Success Can’t Be Coded

Max Korbacher explains why successful internal development platforms cannot be built on tech alone. He discusses the pitfalls of infrastructure-first thinking, the importance of a clear product mindset, and how to measure real value using DevEx and SPACE metrics. Learn how to align your team, manage tech debt, and foster a thriving community to ensure lasting platform adoption. By Max Körbächer

2026-07-20 原文 →
AI 资讯

AliExpress fined almost $630 million over illegal product sales

AliExpress has been hit with a €550 million (about $629 million) fine for violating Europe's Digital Services Act (DSA) rules by failing to prevent illegal, unsafe, or counterfeit products from being sold on the e-commerce platform. The European Commission ruled that AliExpress didn't take effective measures to reduce the dissemination of illegal products, noting the […]

2026-07-20 原文 →
AI 资讯

Podcast: Strands Agents with Clare Liguori

Thomas Betts talks with Clare Liguori, the technical lead on the open source Strands Agents SDK. The conversation covers how Strands Agents has grown from a Python SDK to a full agent harness running in production. Clare shares some lessons learned from building agents at scale, shifting to a model-driven architecture, and what comes next as the LLMs that underpin agents continue to improve. By Clare Liguori

2026-07-20 原文 →
AI 资讯

China delivers a one-two punch to America’s AI dominance

China's leading AI companies are ramping up the pressure on Silicon Valley, as Moonshot and Alibaba unveiled models they claim can go toe-to-toe with the best from OpenAI and Anthropic at a fraction of the cost. The rapid-fire releases suggest America's lead at the AI frontier is increasingly tight, just as the technology is becoming […]

2026-07-20 原文 →
AI 资讯

AWS Releases Loom, an Open-Source Reference Platform for Governing AI Agents at Enterprise Scale

AWS released Loom, an open-source reference platform on AWS Labs for governing AI agents at scale. Built on Strands Agents and Bedrock AgentCore Runtime, it implements RFC 8693 token exchange for identity propagation through delegated actor chains, config-driven deployments without runtime code generation, and mandatory tagging. AWS positions it as an example, not a managed service. By Steef-Jan Wiggers

2026-07-20 原文 →