# Directory

Dev tools, libraries, articles, and finds worth keeping.

## Entries

### [Mostik](https://andrey-markin.com/directory/mostik.md)

Mostik's stealth-exit writeup on passing hidden states between frozen models through a trained bridge, so a 4B model decodes with a 753B model's latent context instead of its text.

**Type:** article | **Added:** 2026-09-03
**Link:** https://mostik.ai/read-more
**Topics:** AI, Machine Learning
**Tags:** llm, inference, ml

### [Agent Skills Discovery RFC](https://andrey-markin.com/directory/agent-skills-discovery-rfc.md)

Cloudflare's draft spec for publishing Agent Skills at a predictable URL — an index at /.well-known/agent-skills/ lists each skill as a single artifact with a type, a URL and a SHA-256 digest. Apache-2.0, v0.2.0, and a draft rather than a ratified IETF RFC.

**Type:** repo | **Added:** 2026-08-13
**Link:** https://github.com/cloudflare/agent-skills-discovery-rfc
**Topics:** AI Coding, Dev Tools, Open Source
**Tags:** agents, reference, security

### [PostHog MCP Analytics](https://andrey-markin.com/directory/posthog-mcp-analytics.md)

Analytics for MCP servers — every tool call an agent makes lands as a normal PostHog event, so you get per-tool failure and latency, the agent's own account of what it was after, and the tools it went looking for and didn't find. Beta, behind a feature preview.

**Type:** tool | **Added:** 2026-08-13
**Link:** https://posthog.com/docs/mcp-analytics
**Topics:** AI, Dev Tools
**Tags:** agents, observability, tracing

### [binpatch](https://andrey-markin.com/directory/binpatch.md)

Binary delta-update engine from BYK. Publish a bsdiff+zstd patch next to each release and a self-updating binary walks the chain from the installed version to the target instead of downloading itself again. Zero runtime dependencies, MIT.

**Type:** library | **Added:** 2026-08-12
**Link:** https://github.com/BYK/binpatch
**Topics:** Dev Tools, Open Source
**Tags:** cli, performance, typescript

### [harness-doctor](https://andrey-markin.com/directory/harness-doctor.md)

Claude Code / Codex skill that mines the last N days of Claude Code transcripts across every project on the machine into five fact tables — bash, errors, tokens, human corrections, fan-out — and returns a ranked list of fixes with the measured number behind each one.

**Type:** guideline | **Added:** 2026-08-12
**Link:** https://www.skills.sh/mark-life/agent-skills/harness-doctor
**Topics:** AI Coding, Dev Tools
**Tags:** agents, cli, observability, performance

### [video-use](https://andrey-markin.com/directory/video-use.md)

Edit video by chatting with a coding agent — drop raw takes in a folder, get a cut, graded, subtitled final.mp4 back. The model never watches the footage; it reads a word-level transcript and a rendered timeline.

**Type:** repo | **Added:** 2026-08-09
**Link:** https://github.com/browser-use/video-use
**Topics:** AI Coding, Open Source
**Tags:** agents, cli, speech-to-text

### [Cloudflare OS](https://andrey-markin.com/directory/cloudflare-os.md)

Cloudflare's internal AI productivity platform, open-sourced. Agents build "gadgets" — private per-user apps written from a prompt — and reach company systems through Gatekeepers, a capability-based permission layer.

**Type:** repo | **Added:** 2026-08-05
**Link:** https://github.com/cloudflare/cloudflare-os
**Topics:** AI, Infrastructure, Open Source
**Tags:** agents, sandbox, serverless, typescript

### [Modal](https://andrey-markin.com/directory/modal.md)

Serverless cloud for AI and data teams — run functions, batch jobs, and GPU inference from Python or JavaScript with no infra to manage.

**Type:** tool | **Added:** 2026-07-28
**Link:** https://modal.com/
**Topics:** Infrastructure, AI
**Tags:** serverless, inference

### [Herdr](https://andrey-markin.com/directory/herdr.md)

Open-source terminal multiplexer built for coding agents — run Claude Code, Codex, OpenCode and more from one terminal on any box, with persistent PTY sessions you can detach and reattach from any device, even a phone over SSH.

**Type:** tool | **Added:** 2026-07-27
**Link:** https://herdr.dev/
**Topics:** AI Coding, Dev Tools, Open Source
**Tags:** cli, agents, local-dev, cross-platform

### [Effect Skill](https://andrey-markin.com/directory/effect-skill.md)

Kit Langton's opinionated agent skill for building production TypeScript apps with Effect v4 — workflows, services, layers, schemas, config, schedules, caches, streams, HTTP clients, and tests, with current APIs and production defaults.

**Type:** guideline | **Added:** 2026-07-21
**Link:** https://www.skills.sh/kitlangton/skills/effect
**Topics:** AI Coding, Dev Tools
**Tags:** agents, effect-ts, typescript

### [exe.dev](https://andrey-markin.com/directory/exe.md)

Cloud for you and your agents — disposable per-second sandboxes, persistent Linux VPS with SSH/HTTPS, and Devbox cloud dev environments.

**Type:** tool | **Added:** 2026-07-16
**Link:** https://exe.dev/
**Topics:** Infrastructure, AI Coding
**Tags:** sandbox, agents

### [Latitude.sh](https://andrey-markin.com/directory/latitude.md)

Global AI cloud — deploy bare metal servers and GPU clusters in seconds across 25 locations, with Kubernetes, storage, and managed databases.

**Type:** tool | **Added:** 2026-07-16
**Link:** https://www.latitude.sh/
**Topics:** Infrastructure, AI
**Tags:** inference

### [context-doctor](https://andrey-markin.com/directory/context-doctor.md)

Claude Code / Codex skill that audits the fixed context a coding agent auto-loads every session — tool/MCP definitions, connectors, plugins, skills, subagents, memory/rules files — and proposes ranked cuts to prune, gate, or route what's loaded but unused.

**Type:** guideline | **Added:** 2026-07-06
**Link:** https://www.skills.sh/mark-life/agent-skills/context-doctor
**Topics:** AI Coding, Dev Tools
**Tags:** agents, cli, observability

### [integrations.sh](https://andrey-markin.com/directory/integrations-sh.md)

A registry of 5,700+ integration specs from Rhys Sullivan — the same builder behind Executor. Every service normalized into MCP, OpenAPI, GraphQL, and CLI form, each surface leading with a grounded, cited credential guide agents can act on.

**Type:** tool | **Added:** 2026-07-05
**Link:** https://integrations.sh/
**Topics:** AI Coding, Dev Tools, Open Source
**Tags:** agents, reference

### [Logging Sucks](https://andrey-markin.com/directory/logging-sucks.md)

Boris Tane's argument that traditional logging is broken for distributed systems and that "wide events" — one comprehensive, high-cardinality structured event per request per service — are the fix. Log what happened to the request, not what your code is doing.

**Type:** article | **Added:** 2026-07-04
**Link:** https://loggingsucks.com/
**Topics:** Infrastructure, Backend
**Tags:** observability, tracing

### [memory-view](https://andrey-markin.com/directory/memory-view.md)

Claude Code / Codex skill that reads a project's auto-memory vault and generates a self-contained HTML explorer to visualize what the agent has remembered — MEMORY.md plus topic files — without editing or managing it.

**Type:** guideline | **Added:** 2026-06-27
**Link:** https://www.skills.sh/mark-life/agent-skills/memory-view
**Topics:** AI Coding, Dev Tools
**Tags:** agents, cli, observability

### [session-report](https://andrey-markin.com/directory/session-report.md)

Claude Code / Codex skill that generates a self-contained HTML report debugging what is in a session's context window and how every token is spent — context budget, retained thinking, the dumb-zone cutoff, loaded CLAUDE.md and skills, and full history.

**Type:** guideline | **Added:** 2026-06-25
**Link:** https://www.skills.sh/mark-life/agent-skills/session-report
**Topics:** AI Coding, Dev Tools
**Tags:** agents, cli, observability

### [It's Time To Rethink Everything](https://andrey-markin.com/directory/rethink-everything.md)

Theo Browne's CascadiaJS 2026 talk arguing that AI is a "new cloud moment" — just as the cloud removed the cost of provisioning servers, agents remove the cost of building, so the sacred rules of software (file systems, codebases, packages, git, deployment) are worth tearing down and rebuilding from first principles.

**Type:** video | **Added:** 2026-06-18
**Link:** https://youtu.be/TV6f2weVgCI
**Topics:** AI Coding, Infrastructure
**Tags:** agents

### [Eve](https://andrey-markin.com/directory/eve.md)

Open-source agent framework from Vercel — define agents as directories of TypeScript and Markdown config and deploy them as standard Vercel projects.

**Type:** library | **Added:** 2026-06-17
**Link:** https://vercel.com/eve
**Topics:** AI, AI Coding, Dev Tools, Open Source
**Tags:** typescript, agents, llm, cli

### [Flue](https://andrey-markin.com/directory/flue.md)

TypeScript framework for building durable AI agents and workflows with no vendor lock-in — write once, deploy anywhere, run on any LLM.

**Type:** library | **Added:** 2026-06-16
**Link:** https://flueframework.com/
**Topics:** AI, AI Coding, Dev Tools, Open Source
**Tags:** typescript, agents, llm, cli

### [teach](https://andrey-markin.com/directory/teach.md)

Matt Pocock's skill that turns a coding agent into a personal tutor — it builds a stateful learning workspace and designs lessons within your zone of proximal development to teach you any skill or concept over multiple sessions.

**Type:** guideline | **Added:** 2026-06-13
**Link:** https://github.com/mattpocock/skills/blob/main/skills/productivity/teach/SKILL.md
**Topics:** AI Coding, Career
**Tags:** agents, learning

### [fff](https://andrey-markin.com/directory/fff.md)

The fastest and most accurate file search toolkit for AI agents, Neovim, Rust, C, and Node. Keeps an in-memory index for sub-10ms queries instead of spawning ripgrep/fzf per search.

**Type:** library | **Added:** 2026-06-12
**Link:** https://github.com/dmtrKovalenko/fff
**Topics:** Dev Tools, AI Coding, Open Source
**Tags:** rust, search, performance

### [Infisical](https://andrey-markin.com/directory/infisical.md)

Open-source security platform for developers and AI agents — secrets management, certificate management (PKI), and privileged access (PAM) under a single identity model with unified auditing.

**Type:** tool | **Added:** 2026-06-12
**Link:** https://infisical.com/
**Topics:** Dev Tools, Infrastructure, Open Source
**Tags:** security, auth, cli

### [Agent Registration with auth.md](https://andrey-markin.com/directory/agent-registration-auth-md.md)

Open protocol for autonomous agents to self-register for services without human intervention — a standardized auth.md file + HTTP endpoints replace OAuth and sign-up forms.

**Type:** article | **Added:** 2026-05-28
**Link:** https://workos.com/blog/agent-registration-with-auth-md
**Topics:** AI, Backend
**Tags:** agents, security, auth

### [netxjs-monorepo](https://andrey-markin.com/directory/netxjs-monorepo.md)

Opinionated Next.js + Turborepo starter with Biome linting, TypeScript, shadcn/ui, and pre-loaded Claude Code agent skills and hooks.

**Type:** repo | **Added:** 2026-05-28
**Link:** https://github.com/Mark-Life/netxjs-monorepo
**Topics:** AI Coding, Dev Tools, Open Source
**Tags:** typescript, agents, shadcn, effect-ts

### [Mediabunny](https://andrey-markin.com/directory/mediabunny.md)

TypeScript library for reading, writing, and converting media files directly in the browser — like FFmpeg, but for the web. Zero dependencies, tree-shakable, and hardware-accelerated via the WebCodecs API.

**Type:** library | **Added:** 2026-05-25
**Link:** https://mediabunny.dev/
**Topics:** Frontend, Dev Tools, Open Source
**Tags:** typescript, performance, cross-platform

### [deepsec](https://andrey-markin.com/directory/deepsec.md)

AI-powered vulnerability scanner that uses coding agents to perform deep security analysis of codebases — regex-based candidate matching followed by LLM-driven investigation, with support for distributed execution and PR diff review.

**Type:** tool | **Added:** 2026-05-24
**Link:** https://github.com/vercel-labs/deepsec
**Topics:** AI Coding, Dev Tools
**Tags:** security, agents, cli

### [Learn Harness Engineering](https://andrey-markin.com/directory/learn-harness-engineering.md)

A 12-lecture curriculum on building effective harnesses that enable AI agents to complete complex tasks reliably — covering architecture, state management, session continuity, and observability patterns.

**Type:** article | **Added:** 2026-05-20
**Link:** https://walkinglabs.github.io/learn-harness-engineering/
**Topics:** AI, AI Coding
**Tags:** agents, learning

### [npm-deps-cleanup](https://andrey-markin.com/directory/npm-deps-cleanup.md)

AI agent skill that audits and reduces JavaScript package dependency footprint — removes unused deps, deduplicates workspace versions, analyzes transitive closures, and applies e18e replacement recommendations. Works with npm, pnpm, Yarn, and Bun.

**Type:** tool | **Added:** 2026-05-20
**Link:** https://www.skills.sh/anthonyshew/dotfiles/npm-deps-cleanup
**Topics:** Dev Tools, AI Coding
**Tags:** cli, dead-code, security

### [How We Test TanStack AI Across 7 Providers](https://andrey-markin.com/directory/tanstack-ai-testing.md)

How TanStack AI runs 137 deterministic tests across 7 LLM providers in ~2 minutes on every PR using a mock server instead of real API calls.

**Type:** article | **Added:** 2026-05-20
**Link:** https://tanstack.com/blog/how-we-test-tanstack-ai-across-7-providers
**Topics:** AI, Dev Tools
**Tags:** testing, agents

### [Accept Markdown](https://andrey-markin.com/directory/accept-markdown.md)

Protocol and implementation guide for serving Markdown to AI agents via HTTP content negotiation — same URL delivers HTML to browsers, Markdown to AI.

**Type:** tool | **Added:** 2026-05-17
**Link:** https://acceptmarkdown.com
**Topics:** AI, Dev Tools
**Tags:** agents, reference

### [Is It Agent Ready?](https://andrey-markin.com/directory/is-it-agent-ready.md)

Scanner that evaluates website compliance with AI agent standards — checks robots.txt, Markdown negotiation, MCP servers, OAuth, and agent protocols.

**Type:** tool | **Added:** 2026-05-17
**Link:** https://isitagentready.com
**Topics:** AI, Dev Tools
**Tags:** agents, testing

### [noqa](https://andrey-markin.com/directory/noqa.md)

AI-powered QA platform that automates mobile app testing with visual AI agents — write tests in plain language, run across iOS and Android on 1000+ real devices.

**Type:** tool | **Added:** 2026-05-17
**Link:** https://noqa.ai
**Topics:** AI, Dev Tools
**Tags:** testing, agents, mobile

### [SEO Lens](https://andrey-markin.com/directory/seo-lens.md)

Chrome extension that audits SEO metadata on any webpage with instant scoring, structured data validation, and AI-friendly copyable reports for Claude Code and Cursor.

**Type:** tool | **Added:** 2026-05-17
**Link:** https://www.seo-lens.dev
**Topics:** Dev Tools, Open Source
**Tags:** effect-ts, performance

### [tfjs-zero-to-hero](https://andrey-markin.com/directory/tfjs-zero-to-hero.md)

Re-implementing classic ML models in TypeScript with @tensorflow/tfjs-node, following Andrej Karpathy's Neural Networks. Zero to Hero. Final destination — a from-scratch two-tower retrieval model on MovieLens.

**Type:** repo | **Added:** 2026-05-16
**Link:** https://github.com/Mark-Life/tfjs-zero-to-hero
**Topics:** Machine Learning, Open Source
**Tags:** typescript, ml, learning

### [Using Claude Code: The Unreasonable Effectiveness of HTML](https://andrey-markin.com/directory/claude-code-html.md)

Thariq makes the case for HTML over Markdown as Claude Code's output format — richer visualizations, color, diagrams, and easier sharing once agents are the ones authoring and humans rarely hand-edit.

**Type:** article | **Added:** 2026-05-15
**Link:** https://x.com/trq212/status/2052809885763747935?s=20
**Topics:** AI Coding, Frontend
**Tags:** agents

### [Pullfrog](https://andrey-markin.com/directory/pullfrog.md)

AI PR review agent from Zod's creator. Dynamically scales effort, uses subagent swarms for large PRs, and runs inside GitHub Actions with batteries-included MCP tools.

**Type:** tool | **Added:** 2026-05-15
**Link:** https://pullfrog.com/start
**Topics:** AI Coding, Dev Tools
**Tags:** agents, ci

### [quality-code](https://andrey-markin.com/directory/quality-code.md)

Rhys Sullivan's TypeScript coding skill — branded types, discriminated unions, end-to-end types, real tests over mocks, OpenTelemetry observability, and picking the right abstractions instead of premature ones.

**Type:** guideline | **Added:** 2026-05-15
**Link:** https://github.com/RhysSullivan/skills/tree/main/skills/quality-code
**Topics:** AI Coding
**Tags:** agents, typescript

### [tabular-nums should be the default for any updating number](https://andrey-markin.com/directory/tabular-nums.md)

Soren makes the case for `font-variant-numeric: tabular-nums` as the default for timers, counters, prices, percentages, scores, and any live data — equal-width digits stop the layout from twitching when numbers change.

**Type:** tweet | **Added:** 2026-05-15
**Link:** https://x.com/sorenblank/status/2028520200417706017?s=20
**Topics:** Frontend
**Tags:** ui

### [Executor](https://andrey-markin.com/directory/executor.md)

Open-source tool gateway for agents from Rhys Sullivan. Normalizes MCP, OpenAPI, GraphQL, and custom sources into one typed SDK that agents call in a sandbox — built on Cloudflare's Code Mode pattern.

**Type:** tool | **Added:** 2026-05-09
**Link:** https://executor.sh/
**Topics:** AI Coding, Dev Tools, Open Source
**Tags:** agents, sandbox

### [Hex](https://andrey-markin.com/directory/hex.md)

Open-source, fully native macOS voice-to-text app using local Parakeet TDT v3 models with zero network calls. Press-and-hold a hotkey to record, release to paste the transcript anywhere.

**Type:** tool | **Added:** 2026-05-02
**Link:** https://hex.kitlangton.com/
**Topics:** AI, Open Source
**Tags:** speech-to-text

### [improve-codebase-architecture](https://andrey-markin.com/directory/improve-codebase-architecture.md)

Matt Pocock's skill for deepening modules — restructuring prototype code into something long-lived with cleaner layer dependencies and easier navigation.

**Type:** guideline | **Added:** 2026-05-02
**Link:** https://github.com/mattpocock/skills/blob/main/skills/engineering/improve-codebase-architecture/SKILL.md
**Topics:** AI Coding
**Tags:** agents

### [Google Search (AI SDK)](https://andrey-markin.com/directory/ai-sdk-google-search.md)

Vercel AI SDK tool that grounds Gemini model responses with live Google Search results and citations.

**Type:** library | **Added:** 2026-04-30
**Link:** https://ai-sdk.dev/providers/ai-sdk-providers/google-generative-ai#google-search
**Topics:** AI, Frontend
**Tags:** search, ai-sdk

### [Amazon SES](https://andrey-markin.com/directory/amazon-ses.md)

AWS cloud email service for sending transactional and marketing messages via API or SMTP at pay-per-use pricing.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://aws.amazon.com/ses/pricing/
**Topics:** Email/Outreach, Infrastructure
**Tags:** email, smtp

### [Axiom](https://andrey-markin.com/directory/axiom.md)

Observability platform for logs, traces, and AI engineering telemetry with petabyte-scale ingestion and zero sampling.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://axiom.co/
**Topics:** AI, Infrastructure
**Tags:** observability, tracing

### [Bloom.diy](https://andrey-markin.com/directory/bloom-diy.md)

AI-powered mobile app builder that turns ideas into native Android apps without writing code.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://bloom.diy/
**Topics:** AI, Frontend
**Tags:** no-code

### [Browser Use](https://andrey-markin.com/directory/browser-use.md)

Open-source browser automation harness that lets AI agents navigate and interact with websites at scale.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://browser-use.com/
**Topics:** AI, Dev Tools
**Tags:** browser-automation, agents, scraping

### [Cloudflare AI](https://andrey-markin.com/directory/cloudflare-ai.md)

Serverless GPU inference and agent infrastructure running on Cloudflare's global edge network.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.cloudflare.com/solutions/ai/
**Topics:** AI, Infrastructure
**Tags:** inference, gateway, serverless

### [Cloudflare Email Routing](https://andrey-markin.com/directory/cloudflare-email-routing.md)

Free email routing service that forwards custom domain addresses to any inbox with optional Workers processing.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.cloudflare.com/products/email-routing/
**Topics:** Email/Outreach, Infrastructure
**Tags:** email, smtp

### [Drizzle ORM](https://andrey-markin.com/directory/drizzle-orm.md)

TypeScript ORM with a SQL-like query API, type-safe schema definitions, and multi-database support.

**Type:** library | **Added:** 2026-04-30
**Link:** https://orm.drizzle.team/
**Topics:** Databases, Backend
**Tags:** orm, typescript, sql

### [Effect Institute](https://andrey-markin.com/directory/effect-institute.md)

Interactive online learning platform with narrated video tutorials for the Effect-TS library.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.effect.institute/
**Topics:** Dev Tools
**Tags:** learning, effect-ts, typescript

### [Effect Solutions](https://andrey-markin.com/directory/effect-solutions.md)

Prescriptive guide and reference for writing idiomatic Effect-TS programs with setup, patterns, and ecosystem docs.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.effect.solutions/
**Topics:** Dev Tools
**Tags:** effect-ts, typescript, reference

### [Effect](https://andrey-markin.com/directory/effect.md)

TypeScript library for building robust apps with typed errors, structured concurrency, retries, and first-class OpenTelemetry observability.

**Type:** library | **Added:** 2026-04-30
**Link:** https://effect.website/
**Topics:** Dev Tools, Backend
**Tags:** effect-ts, typescript

### [Exa](https://andrey-markin.com/directory/exa.md)

Search API built for AI agents, returning fast, high-quality web results with structured content extraction.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://exa.ai/
**Topics:** AI, Dev Tools
**Tags:** search, scraping, agents

### [Fallow](https://andrey-markin.com/directory/fallow.md)

CLI tool that analyzes TypeScript and JavaScript codebases to find unused exports, dead code, and complexity hotspots.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://docs.fallow.tools/
**Topics:** Dev Tools
**Tags:** dead-code, typescript, cli

### [Firecrawl](https://andrey-markin.com/directory/firecrawl.md)

Web crawling and scraping API that converts any website into LLM-ready markdown or structured JSON.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.firecrawl.dev/
**Topics:** AI, Dev Tools
**Tags:** scraping, llm

### [Google CheckMX](https://andrey-markin.com/directory/google-checkmx.md)

Google Apps Toolbox utility that checks MX, SPF, and DKIM DNS records to diagnose email delivery configuration issues.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://toolbox.googleapps.com/apps/checkmx/
**Topics:** Dev Tools
**Tags:** dns

### [GPTZero](https://andrey-markin.com/directory/gptzero.md)

AI content detection platform that identifies text generated by ChatGPT, Claude, Gemini, and other LLMs.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://gptzero.me/
**Topics:** AI, Dev Tools
**Tags:** ai-detection

### [Groq](https://andrey-markin.com/directory/groq.md)

API provider for open-weight LLMs and Whisper speech-to-text at extremely high inference speeds.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://console.groq.com/docs/models
**Topics:** AI
**Tags:** llm, inference, speech-to-text

### [Inboxy](https://andrey-markin.com/directory/inboxy.md)

Email warmup service that uses AI and a private inbox network to boost domain reputation and deliverability.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://inboxy.io/
**Topics:** Email/Outreach
**Tags:** email, warmup, deliverability

### [Inkless](https://andrey-markin.com/directory/inkless.md)

Free e-signature platform for uploading, signing, and sending unlimited documents without a subscription.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://useinkless.com/
**Topics:** Dev Tools
**Tags:** e-signature, documents

### [Instantly](https://andrey-markin.com/directory/instantly.md)

Cold email and outreach platform with built-in email warmup and AI-powered campaign automation.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://instantly.ai/
**Topics:** Email/Outreach
**Tags:** email, warmup, outreach

### [IPWarmup](https://andrey-markin.com/directory/ipwarmup.md)

Provides pre-warmed SMTP servers with established sender reputation so campaigns can start at full volume.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://ipwarmup.com/pre-warmed-smtp-servers
**Topics:** Email/Outreach, Infrastructure
**Tags:** email, warmup, deliverability

### [Langfuse](https://andrey-markin.com/directory/langfuse.md)

Open-source LLM engineering platform for tracing, prompt management, evaluations, and production monitoring.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://langfuse.com/
**Topics:** AI, Dev Tools
**Tags:** evals, observability, tracing

### [Lighthouse HQ](https://andrey-markin.com/directory/lighthouse-hq.md)

Immigration platform that guides international professionals through U.S. visa applications with document prep and expert support.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.lighthousehq.com/
**Topics:** Dev Tools

### [MailReef](https://andrey-markin.com/directory/mailreef.md)

Dedicated cold email sending infrastructure with private SMTP servers, dedicated IPs, and unlimited mailboxes.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.mailreef.com/
**Topics:** Email/Outreach, Infrastructure
**Tags:** email, outreach

### [Mem0](https://andrey-markin.com/directory/mem0.md)

Persistent memory infrastructure for AI agents that compresses context and reduces token usage across sessions.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://mem0.ai/
**Topics:** AI
**Tags:** memory, agents, rag

### [Models.dev](https://andrey-markin.com/directory/models-dev.md)

Open-source database of AI model specs, pricing, and capabilities queryable via a JSON API.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://models.dev/
**Topics:** AI, Dev Tools
**Tags:** llm, reference

### [OpenPhone](https://andrey-markin.com/directory/openphone.md)

Business phone system that provides virtual numbers, shared calling, and texting for teams in one app.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.openphone.com/
**Topics:** Dev Tools
**Tags:** voip

### [OpenRouter](https://andrey-markin.com/directory/openrouter.md)

One API to access 400+ LLMs from 60+ providers with automatic fallback and unified billing.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://openrouter.ai/
**Topics:** AI
**Tags:** llm, gateway

### [Perplexity API](https://andrey-markin.com/directory/perplexity-api.md)

API platform providing real-time web search and grounded LLM responses with citations via Sonar models.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.perplexity.ai/api-platform
**Topics:** AI, Dev Tools
**Tags:** search, llm, agents

### [PlanetScale](https://andrey-markin.com/directory/planetscale.md)

Managed MySQL and PostgreSQL database platform with branching workflows for zero-downtime schema changes.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://planetscale.com/
**Topics:** Databases, Infrastructure
**Tags:** sql

### [Ragie](https://andrey-markin.com/directory/ragie.md)

Managed RAG-as-a-service that ingests documents and provides hybrid search APIs for AI applications.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.ragie.ai/
**Topics:** AI
**Tags:** rag, documents, agents

### [React Doctor](https://andrey-markin.com/directory/react-doctor.md)

Static analysis tool that evaluates React codebases across security, performance, correctness, and architecture, producing a health score with diagnostics.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.react.doctor
**Topics:** Dev Tools, AI Coding
**Tags:** react, performance

### [Reply.io](https://andrey-markin.com/directory/reply-io.md)

Multichannel sales engagement platform that automates outreach across email, LinkedIn, SMS, and calls.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://reply.io/
**Topics:** Email/Outreach
**Tags:** email, outreach

### [Resend](https://andrey-markin.com/directory/resend.md)

Developer-first email API for sending transactional and marketing email, with multi-language SDKs, a CLI, and React Email templating.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://resend.com/
**Topics:** Email/Outreach, Dev Tools
**Tags:** email, smtp

### [Scira](https://andrey-markin.com/directory/scira.md)

Open-source agentic research platform that plans, retrieves, and returns cited answers across 17 search modes.

**Type:** repo | **Added:** 2026-04-30
**Link:** https://github.com/zaidmukaddam/scira
**Topics:** AI, Open Source
**Tags:** search, agents, ai-sdk

### [ScrapingBee](https://andrey-markin.com/directory/scrapingbee.md)

Web scraping API that handles headless Chrome rendering, proxy rotation, and anti-bot bypassing automatically.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.scrapingbee.com/
**Topics:** Backend, Dev Tools
**Tags:** scraping, proxies, browser-automation

### [Smartlead](https://andrey-markin.com/directory/smartlead.md)

Cold email platform with unlimited mailbox warmup, AI-driven sending patterns, and deliverability monitoring.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.smartlead.ai/
**Topics:** Email/Outreach
**Tags:** email, warmup, outreach, deliverability

### [Stagehand](https://andrey-markin.com/directory/stagehand.md)

Open-source SDK for building browser agents using natural language instructions instead of brittle selectors.

**Type:** library | **Added:** 2026-04-30
**Link:** https://www.browserbase.com/stagehand
**Topics:** AI Coding, Dev Tools
**Tags:** browser-automation, agents, typescript, testing

### [Supermemory](https://andrey-markin.com/directory/supermemory.md)

Context and memory infrastructure for AI agents with hybrid vector search, user profiling, and connectors for Notion, Slack, Google Drive, and more.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://supermemory.ai
**Topics:** AI
**Tags:** memory, agents, rag

### [telegram-claude](https://andrey-markin.com/directory/telegram-claude.md)

Telegram bot interface for Claude Code on a VPS. Message the bot, it spawns Claude Code in the selected project directory and streams results back — voice notes, streaming responses, session continuity, plan-mode interception.

**Type:** repo | **Added:** 2026-04-30
**Link:** https://github.com/Mark-Life/telegram-claude
**Topics:** AI Coding, Open Source
**Tags:** agents, cli

### [Turso](https://andrey-markin.com/directory/turso.md)

SQLite at the edge with unlimited lightweight databases, concurrent writes, and no cold start penalties.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://turso.tech/
**Topics:** Databases, Infrastructure
**Tags:** sql, edge

### [Ultracite](https://andrey-markin.com/directory/ultracite.md)

Zero-config preset that wires up linters, formatters, editor settings, and AI-agent rule files for JavaScript and TypeScript projects.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.ultracite.ai/
**Topics:** Dev Tools
**Tags:** typescript, cli

### [Unipile](https://andrey-markin.com/directory/unipile.md)

Unified API for reading and sending messages across LinkedIn, email, WhatsApp, Telegram, and calendars.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.unipile.com/
**Topics:** Backend, Dev Tools
**Tags:** messaging

### [agent-browser](https://andrey-markin.com/directory/vercel-agent-browser.md)

Rust CLI tool for browser automation designed for AI agent workflows with JSON output and screenshot support.

**Type:** repo | **Added:** 2026-04-30
**Link:** https://github.com/vercel-labs/agent-browser
**Topics:** AI Coding, Open Source
**Tags:** browser-automation, testing, agents, rust, cli

### [agent-eval](https://andrey-markin.com/directory/vercel-agent-eval.md)

Testing framework for measuring how well AI coding agents perform against your framework or configuration.

**Type:** repo | **Added:** 2026-04-30
**Link:** https://github.com/vercel-labs/agent-eval
**Topics:** AI Coding, Dev Tools
**Tags:** evals, agents

### [Vercel AI Gateway](https://andrey-markin.com/directory/vercel-ai-gateway.md)

Unified endpoint to route requests across hundreds of AI model providers with built-in failover and observability.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://vercel.com/ai-gateway
**Topics:** AI, Infrastructure
**Tags:** llm, gateway

### [emulate](https://andrey-markin.com/directory/vercel-emulate.md)

Local API emulator that provides stateful, production-fidelity stubs for services like GitHub, Google, and Slack.

**Type:** repo | **Added:** 2026-04-30
**Link:** https://github.com/vercel-labs/emulate
**Topics:** Dev Tools, Open Source
**Tags:** evals, local-dev, ci

### [json-render](https://andrey-markin.com/directory/vercel-json-render.md)

Generative UI framework that lets AI produce dynamic interfaces constrained to a developer-defined component catalog.

**Type:** repo | **Added:** 2026-04-30
**Link:** https://github.com/vercel-labs/json-render
**Topics:** AI, Frontend
**Tags:** ai-sdk, shadcn

### [just-bash](https://andrey-markin.com/directory/vercel-just-bash.md)

Simulated bash environment with a virtual filesystem for use in AI agent workflows.

**Type:** repo | **Added:** 2026-04-30
**Link:** https://github.com/vercel-labs/just-bash
**Topics:** AI Coding, Open Source
**Tags:** agents, sandbox

### [portless](https://andrey-markin.com/directory/vercel-portless.md)

Replaces localhost port numbers with stable named URLs and enables HTTPS and HTTP/2 for local dev servers.

**Type:** repo | **Added:** 2026-04-30
**Link:** https://github.com/vercel-labs/portless
**Topics:** Dev Tools, Open Source
**Tags:** local-dev, proxies

### [zero-native](https://andrey-markin.com/directory/vercel-zero-native.md)

Framework for building desktop and mobile apps with Zig backends and web frontends via platform WebViews.

**Type:** repo | **Added:** 2026-04-30
**Link:** https://github.com/vercel-labs/zero-native
**Topics:** Frontend, Open Source
**Tags:** zig, cross-platform

### [Verifalia](https://andrey-markin.com/directory/verifalia.md)

Email validation service that identifies invalid and undeliverable addresses to reduce bounce rates and protect sender reputation.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://verifalia.com/
**Topics:** Email/Outreach
**Tags:** email, deliverability

### [VERT](https://andrey-markin.com/directory/vert.md)

Free, privacy-first file converter that runs entirely in the browser using WebAssembly. Supports images, videos, audio, documents, and more with no uploads required.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://vert.sh
**Topics:** Dev Tools, Open Source
**Tags:** documents, cross-platform

### [Zenblog](https://andrey-markin.com/directory/zenblog.md)

Headless CMS with a Notion-style editor, hosted media uploads, and a type-safe API client for developer-managed blogs.

**Type:** tool | **Added:** 2026-04-30
**Link:** https://www.zenblog.com/
**Topics:** Dev Tools
**Tags:** cms

### [auto-pr](https://andrey-markin.com/directory/auto-pr.md)

Local Node.js loop that turns GitHub issues into pull requests — label an issue `auto-pr` and a multi-step Claude pipeline (research → plan → implement → review) spawns Claude Code and opens a PR.

**Type:** repo | **Added:** 2026-02-22
**Link:** https://github.com/franciscohermida/auto-pr
**Topics:** AI Coding, Open Source
**Tags:** agents, cli

## Contact

- Website: https://andrey-markin.com/directory
- Contact form: https://andrey-markin.com/#contact