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AI tools work on everything except the model
2026-10-19

AI tools work on everything except the model

Sixteen AI tools that shipped or surged between October 12 and 18, 2026, from a harness Google Research open-sourced that rewrites itself to three ways of proving what an agent actually did, what a free tier really costs, and editors that decide the shot before the model runs.

New AI Tools Weekly
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This issue covers AI tools that launched or gained traction between October 12 and October 18, 2026. Product Hunt's weekly board ran on exactly that window, so the ranks below are its own positions. 1 GitHub's weekly board is a rolling seven days that ended on the morning of October 19, so a few of its hours fall outside the stated range; every star figure below is the board's own. 2 A public X search ran as well and returned one launch worth covering, Google Research's Harness², verified against its repository. 3
Sixteen releases sit in five themes. Each entry gives the discovery signal, the access and pricing model, what the tool mechanically does, the closest alternative it differs from, and a bounded first test.
Two things about the sourcing. The weekly board rendered ranks 1 through 14 plus 24, 25 and 27, so a few positions in between are missing from it; the seven daily boards filled those in and are cited where used. 1 Every tool below is checked against a first-party page, a repository or both, not against the board listing alone.

At a glance

  • The harness gets a name, then a learning loop — Harness², Harness by Autonomous, OpenMuse
  • Skill packs get a publisher — Claude Code plugin directory, vercel-labs/skills, K-Dense scientific skills, Articos MCP
  • Proof of what the agent actually did — REA, Tiden, shim-cli
  • What "free" is paid for with — Retriever AI, free-claude-code, Rakazo
  • Direct the model instead of prompting it — ArtCraft, HeliosGen, Fish Audio Drama 3

The harness gets a name, then a learning loop

A harness is everything wrapped around a model that turns it into an agent: the system prompt, the tools, the memory, the skills, the subagents. Three releases this week treat that wrapper as the thing worth engineering, which is a change from tuning the model inside it.
ToolCurrent signalAccess / pricingWhat it doesDifferentiationTry-it test
Harness² (Google Research)Surfaced in a widely shared post on X on October 18, 2026; the repository, created October 6, already holds 8,527 stars. 34Apache-2.0, free. You pay only the model calls your benchmark runs make. 4A research framework for recursive harnessing with the model weights frozen. On each task the agent proposes edits to its own harness, runs candidate versions, and composes a better one from how those runs differed; across tasks it keeps an improvement library of harnesses and lessons that seeds the next round. Eight components are editable: system prompt, guardrails, memory, tool guidance, subagents, skills, scripts and plugins. 5Agent frameworks hand you a harness and leave it as written. This one edits the harness per task without a ground-truth grader, using contrast between runs instead. 5Run the bundled local demo, which needs no model credentials, then one JobBench task on your own model. The test is whether the edits it keeps are ones you would have made yourself.
Harness by AutonomousProduct Hunt weekly board, October 12–18: rank 6, and rank 2 on the October 16 daily board. 16Free and open source, with native apps for Mac and Linux, a terminal client, and iOS and Android apps for answering agents by voice. An always-on desk display is sold separately. 78One command centre for coding agents on different machines: Claude Code at work, Codex at home, Hermes in the cloud, side by side. Each agent runs on its own branch, keeps working when the app closes, and traffic is end-to-end encrypted. It also ships 49 harnesses for CAD, circuits, robots, games and music. 8A chat client shows you one agent at a time. This shows every agent on every machine at once, and moves the waiting question — an agent stopped to ask something — onto your phone. 8Connect two agents on two machines, close the laptop, and come back in an hour. The test is whether both finished and the branches stayed separate.
OpenMuse (CopilotKit)Product Hunt daily board, October 15: rank 5; the repository holds 5,246 stars. 910MIT licence, alpha, free to run; the sample app starts without a model key, a Google account or Docker. CopilotKit sells a separate learning layer beside it, and the sample does not need it. 11A personal agent app for iOS, Android and web that takes any harness behind it over AG-UI. It keeps a persistent Chromium profile and an optional Linux terminal, durable task plans with approvals and receipts, documents, and Gmail and Calendar over OAuth. Every send and every calendar change waits for a review. 11Vendor assistants fix the harness inside the app. OpenMuse is a shell you keep, and the harness is a component you swap. 11Run the five-command sample, then point one surface at your own harness and try to send an email. The test is whether the send stops at the approval step.
Harness² and Harness by Autonomous answer different questions. One is a method for improving a harness you already have; the other is a place to run several of them. OpenMuse is the part that follows you onto a phone. All three assume you now keep more than one agent, which is the assumption worth checking against your own week.

Skill packs get a publisher

Last month a skill was a file you wrote. This week four releases treat it as a package someone publishes, signs, and sells — which moves the reader's question from "what should my agent know" to "who wrote this and who vouched for it".
ToolCurrent signalAccess / pricingWhat it doesDifferentiationTry-it test
Claude Code plugin directory (Anthropic)GitHub weekly: +4,774 stars (42,942 total) on the all-language board. 12Apache-2.0, free. 12Anthropic's own managed directory of Claude Code plugins. A plugin is a directory of components installed as one unit: skills, subagents, hooks, MCP servers and a manifest, fetched from a marketplace and updated by it. 13A skill you drop into ~/.claude/skills/ gives you one instruction set. A plugin can bring skills, a hook after every edit and a tool server in one versioned install. 13Install one plugin from the Discover tab in a scratch repository, then list exactly which components appeared. The test is whether you can name all of them without opening the docs.
vercel-labs/skillsGitHub weekly: +1,734 stars (35,552 total) on the TypeScript board. 14MIT licence, free. 14The npx skills tool and the directory behind skills.sh, which lists skills with install counts and installs them into whichever client you use — Claude Code, Cursor, Codex, Copilot, Gemini, Windsurf, Cline, OpenCode, Zed and others. 15Skills usually live inside one vendor's format and one vendor's folder. This normalises the install across the twenty clients listed and publishes the install count next to each name. 15Install the top skill of the board into two different clients. The test is whether both load it without you editing a path.
scientific-agent-skills (K-Dense AI)GitHub weekly: +4,310 stars (52,740 total) on the Python board. 16MIT licence, free. 16177 validated skills plus connections to over 100 scientific databases, covering biology, chemistry, medicine and drug discovery, and following the open Agent Skills standard so it works in Cursor, Claude Code, Codex, Pi and Antigravity. The library ships with a paper. 1617A general pack teaches the agent a workflow. This one carries the databases and the validation, which is the part a lab cannot write itself. 17Run one skill on a dataset whose answer you already published. The test is whether it reproduces the number and shows which database it came from.
Articos MCP skillsProduct Hunt weekly board: rank 4; rank 1 on the October 13 daily board. 118Starter $79/month, Pro $199/month, which works out at about $8 per study; free trial without a card, and launch buyers get extra studies with the code PHBONUS. The MCP connection is included on every paid plan. 192019 packaged research workflows — headline testing, ICP discovery, pricing, landing-page clarity, A/B comparisons — that tell Claude or ChatGPT how to run a study through Articos's MCP server. The server builds simulated buyers matched to your profile, runs the study, and returns reactions with reasoning in under 30 minutes. 19Asking an assistant directly returns an answer shaped by how you framed the question. These personas are interviewed without knowing your hypothesis, and the vendor puts the method's recall at 86% against expert-published findings across 46 studies. 19Run Headline Testing on two headlines you already shipped. The test is whether a persona raises the objection that actually showed up in your signup data.
The four differ mainly in who is accountable. Anthropic's directory is accountable for compatibility with its own client, Vercel's index for the install, K-Dense for the science, Articos for the study. That is the column worth reading before you install anything an agent will act on.

Proof of what the agent actually did

An agent writes the code, writes the tests that pass on that code, and writes the description of what it built. Three releases this week stand outside that loop and report on it.
ToolCurrent signalAccess / pricingWhat it doesDifferentiationTry-it test
REA (morluto)GitHub weekly: +229,268 stars (327,744 total), rank 1 on the all-language board; the launch post on X from October 12 has passed 2.6 million views. 221MIT licence, free; installed with one npx command. 22An MCP server and skill pack that gives a coding agent the tools to reverse engineer software: it returns decompiled code, references and runtime observations for native binaries, installed applications and browser behaviour, so the agent can explain a feature and rebuild it. 23A decompiler hands you a listing and leaves the reading to you. REA hands the listing to the agent together with the runtime evidence, and asks it to answer a question about behaviour. 23Ask it one question about software you own, such as why a percentage button computes what it computes. The test is whether the answer points at instructions you can check yourself.
TidenProduct Hunt daily board, October 14: rank 4; built by the team behind Qase. 24Free trial; the listing is tagged as having free options. 25Intent verification that sits beside Claude Code, Cursor, Copilot, Codex or Gemini CLI. It writes your intent down as specs that branch and merge like code, then checks every change against that record, with the verdict coming from tests run in your own environment rather than from a model reading the diff. Production errors trace back to the release that carried them. 25Tests written inside the agent's session agree with the code by construction. Tiden's judge sits outside the loop and holds the requirement that the session cannot rewrite. 25Start one intent, let an agent implement it, then delete a sentence from the spec and rerun the gate. The test is whether the gate fails on the behaviour you deleted.
shim-cli (GetSHIM)Product Hunt daily board, October 18: rank 3. 26Apache-2.0, version 1.2.1, free; macOS and Linux, Python 3.10 or newer. 2728A local hook that sits in front of Claude Code, Codex, Copilot CLI and VS Code. It finds secrets and personal data in what the agent sends, swaps them for placeholders where the client allows it, and reports what a session sent and what it cost; a separate command audits what your past sessions already sent. 27A secret scanner in CI finds the key after it is committed. This one changes what leaves the machine, and counts what left before you installed it. 27Run the demo, then the audit on your own history. The test is whether a category it names in the audit surprises you.
These three fail in different places, and the difference matters. REA tells you how a program behaves, Tiden tells you whether a change matches what you asked for, shim-cli tells you what left the building. None of them asks a model to grade another model's work.

What "free" is paid for with

Three of the week's releases are free at the point of use. Each is free for a different reason, and the reason is the thing to inspect before you build on it.
ToolCurrent signalAccess / pricingWhat it doesDifferentiationTry-it test
Retriever AIProduct Hunt daily board, October 14: rank 3; the product's fifth launch. 24$0 on an ad-supported tier, with paid tiers above it; a Chrome extension and a cloud run mode, plus API, MCP and CLI. The vendor reports 35,000 users and 7 million tasks automated. 2930A browser agent that works across the open web and the sites you are already signed into, then returns the result: lists pulled into a sheet, leads enriched, forms filled, posts made. It runs in your browser, on the vendor's cloud, or as an API a product calls. 29A metered browser agent charges per step. The free mode charges in attention instead, which is fine for a personal task and awkward inside a product your customers use. 30Run one recurring export in the free mode. The test is whether the result is clean enough that you would put it in front of a colleague.
free-claude-code (Alishahryar1)GitHub weekly: +3,838 stars (61,686 total) on the Python board. 2Source published, licence listed as Other; free to use, and the free quota is other providers' free tiers. 31A model router for coding agents: 61 providers and a stated 1.3 billion free tokens a month, one searchable catalogue, and 11 agents — Claude Code, Codex, Pi, OpenCode, Cline, Hermes and others — pointed at it. The project says it follows provider terms and removes an integration if the provider stops allowing it. 31A subscription gives you one vendor's models and a predictable bill. This spreads the same work across many free tiers and local models, and the availability becomes someone else's decision. 31Run one day's work through it and note which provider carried the most calls. The test is whether that provider's terms allow what you just did.
Rakazo (elie222)GitHub weekly: +850 stars (4,644 total) on the TypeScript board. 2Apache-2.0, free, in beta; you supply the model and the computer, or run the whole stack locally. 32An open-source agent for persistent teammates, on the web, as a desktop app, and on iPhone and Android. You bring your own model provider and computer provider, or run both locally, and the vendor positions it as an alternative to hosted assistants such as Grok Bot, Muse and Dots. 3233A hosted assistant bills a subscription and keeps the transcript. Here the bill moves to your API key and your hardware, and the transcript stays on your disk. 32Run one recurring task through it for a week with your own key. The test is whether the total you spent is lower than the subscription it replaced, and by how much.
The pattern is worth naming: none of these three contradicts the others, and none of them is a trick. Retriever trades attention for compute, free-claude-code trades reliability for quota, Rakazo trades convenience for a bill you can read.

Direct the model instead of prompting it

The last three releases put the person back in the director's chair: you compose the shot, wire the pipeline, or direct the performance, and the model fills in what you left open.
ToolCurrent signalAccess / pricingWhat it doesDifferentiationTry-it test
ArtCraft (storytold)GitHub weekly: +16,379 stars (33,098 total), on the all-language board behind only REA. 2Apache-2.0, free to download for macOS and Windows, and it runs in the browser; no subscription. The models are called directly, with no aggregator in between. 3435An editor for image and video generation built on composition: 2D layers and cutouts, 3D compositing with real depth, image-to-3D meshes, character posing, background removal, and mixed assets on one canvas. The scene exists before a render, then the model renders it. 35Prompt-and-reroll gives you a new picture each time. ArtCraft keeps the blocking, so a second render keeps the camera and the character where you put them. 35Block one shot with two characters, render it, then render again with a different model. The test is whether the blocking survives the swap.
HeliosGen (SegFault42)GitHub weekly: +628 stars (3,168 total) on the TypeScript board. 2Free desktop app, no licensing file published on the repository; you paste your own kie.ai API key and pay that service per generation. The current build is macOS Apple Silicon only, and the project is asking for Windows and Linux builds. 36A visual pipeline editor for image and video generation: chain prompts, models, reference images and automations on an infinite canvas. Generations, uploads, folders, workflows and settings live in a local database, and the media is saved to a local folder. 36It reads as a self-hosted alternative to a generation subscription, and the honest version is narrower: the workspace and the data are local, the rendering still happens at kie.ai. 37Build one three-step pipeline, then take the machine offline and run it. The test is which step fails, which tells you exactly how much is local.
Fish Audio Drama 3Product Hunt daily board, October 16: rank 7; launch pricing of 80% off the API and 50% off plans is running on the vendor's site. 638Free tier at $0 with 8,000 credits a month, about seven minutes of audio; Plus from $11/month billed annually, Pro from $75/month, Max from $749/month. A minute of speech is roughly 600 to 625 credits. 39A voice model the launch describes as voice acting you can direct rather than generate, on a platform that offers emotion control and cloned voices across eight languages. 638A text-to-speech model returns one reading of a line. The pitch here is a second take on request, with the performance as the variable rather than the text. 6Read the same three lines with two different directions and compare the takes. The test is whether the emotion changes while the pronunciation stays right.
ArtCraft and HeliosGen are both editors, and the difference between them is what they think the unit of work is: a shot, or a repeatable pipeline. Fish Audio sells the third unit, the performance. None of the three removes the model; they all decide what it is allowed to improvise.

Editorial view: what the week adds up to

Sixteen releases, and not one of them ships a better model. The leverage moved to the wrapper: a harness that rewrites itself, a shelf that hands you someone else's skills, a gate that sits outside the agent's own loop, a free tier with a visible currency, and an editor that decides the shot before the model sees it.
The reading is mine rather than any vendor's, and it fails in one predictable way. Every entry above assumes you can say what you wanted. Harness² optimises against contrast between runs, not against your intent; shim-cli masks what it can recognise, not what you forgot to classify; the free tiers hold until a provider changes its mind. The entries that fail a first test usually fail because nobody wrote the requirement down, which is the one part of this week's stack that no release sells.

Not covered this week

Products on the board that are not AI tooling: Pancake (rank 1), Talanoa (5), Fina Business (12), Tesla Roadster (14), Inbox Zero (9), MyLens (24), AdAnt 2.0 (27). 1
Model releases seen and left out: Google EmbeddingGemma 2 (rank 8), Z.ai's GLM-Legal (October 15), Meta's Muse Spark Open on Ollama. 19
AI tooling close to a theme already covered: Inferock (rank 3) and Navige (13) are both inference cost control, which this channel covered in its October 5–11 issue; OpenCode 2.0 (7) and NitroStack (10) were held back for the same reason. 1
Seen on GitHub's weekly boards and left out as duplicates of earlier issues: mksglu/context-mode, heygen-com/hyperframes, cathrynlavery/diagram-design, debpalash/VoiceStudio, HKUDS/CLI-Anything, earthtojake/text-to-cad, ifixai-ai/iFixAi, thedotmack/claude-mem, tashfeenahmed/freellmapi, ranxianglei/billion-context, cursor/plugins. 2
Seen and not covered for space or weak weekly growth: Jockey by TwelveLabs (first launched in July), MadsLorentzen/ai-job-search, ruvnet/ruflo, TencentCloud/TencentDB-Agent-Memory, CopilotKit/OpenIntelligentUI, krillinai/OpenCreator, KittenML/KittenTTS, remotion-dev/remotion, NationalSecurityAgency/ghidra, boykopovar/AnyPS5, nitrostack, guilds.run, Pomerado, BOSS Console, Craft Agents, Polylane, withHuman. 2

References

  1. 1
    Product Hunt weekly leaderboard, October 12–18, 2026

    producthunt.com

  2. 2
    GitHub Trending, weekly

    github.com

  3. 3
    Harness² on X, October 18, 2026

    x.com

  4. 4
    google-research/harness2

    github.com

  5. 5
    Harness² project page

    harness2.github.io

  6. 6
    Product Hunt, October 16, 2026

    producthunt.com

  7. 7
    Harness by Autonomous

    autonomous.ai

  8. 8
    Harness by Autonomous on Product Hunt

    producthunt.com

  9. 9
    Product Hunt, October 15, 2026

    producthunt.com

  10. 10
    CopilotKit/openmuse

    github.com

  11. 11
    OpenMuse

    copilotkit.ai

  12. 12
    anthropics/claude-plugins-official

    github.com

  13. 13
    Claude Code plugin documentation

    code.claude.com

  14. 14
    vercel-labs/skills

    github.com

  15. 15
    skills.sh

    skills.sh

  16. 16
    K-Dense-AI/scientific-agent-skills

    github.com

  17. 17
    K-Dense scientific agent skills paper

    arxiv.org

  18. 18
    Product Hunt, October 13, 2026

    producthunt.com

  19. 19
    Articos MCP skills

    articos.com

  20. 20
    Articos pricing

    articos.com

  21. 21
    REA on X, October 12, 2026

    x.com

  22. 22
    morluto/rea

    github.com

  23. 23
    REA

    rea.tools

  24. 24
    Product Hunt, October 14, 2026

    producthunt.com

  25. 25
    Tiden

    tiden.ai

  26. 26
    Product Hunt, October 18, 2026

    producthunt.com

  27. 27
    shim-cli

    getshim.tech

  28. 28
    GetSHIM/shim-cli

    github.com

  29. 29
    Retriever AI

    rtrvr.ai

  30. 30
    Retriever AI pricing

    rtrvr.ai

  31. 31
    Alishahryar1/free-claude-code

    github.com

  32. 32
    elie222/rakazo

    github.com

  33. 33
    Rakazo

    rakazo.com

  34. 34
    storytold/artcraft

    github.com

  35. 35
    ArtCraft

    getartcraft.com

  36. 36
    SegFault42/HeliosGen

    github.com

  37. 37
    HeliosGen

    helios.sdd.cash

  38. 38
    Fish Audio

    fish.audio

  39. 39
    Fish Audio pricing

    fish.audio

New AI Tools Weekly
New AI Tools Weekly@NeoDrop Official

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Related content

  • At a glance
  • The harness gets a name, then a learning loop
  • Skill packs get a publisher
  • Proof of what the agent actually did
  • What "free" is paid for with
  • Direct the model instead of prompting it
  • Editorial view: what the week adds up to
  • Not covered this week