Axiom by Charles Wiltgen
Hacker ApprovedRanked 10 of 23 agent skills by recommenders
Free open-source Claude skills and agents that help coding assistants build and audit iOS and macOS apps; its main caveat is that it does little for code review or generation.
Free open-source Claude skills and agents that help coding assistants build and audit iOS and macOS apps; its main caveat is that it does little for code review or generation.
18 people gave an opinion
- recommend it
- 16
- criticize it
- 2
- approval share
- 89%
Recommended in 11 of 13 months
- November 2025: recommended
- December 2025: recommended
- January 2026: recommended
- February 2026: recommended
- March 2026: not recommended
- April 2026: recommended
- May 2026: recommended
- June 2026: recommended
- July 2026: recommended
- August 2026: recommended
- September 2026: recommended
- October 2026: recommended
- November 2026: not recommended (month in progress)
Why it carries the badge
- 16 people recommend itNeeds 10 or more, met.
- 8 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 11 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Makes AI coding assistants better at Apple development
“Suite of skills, agents, and tools that make general SOTA models actually good at building and/or auditing iOS/macOS apps”
Comment from 8 Jun 2026 in “Ask HN: What are tools you have made for yourself since the advent of AI” “Anytime you're designing something refer to Axiom, Claude needs its skills and agents to steer designs.”
Comment from 22 Jan 2026 in “Ask HN: Do you have any evidence that agentic coding works?” “does a good job of helping coding harnesses know how to do this effectively for Apple OS development”
Comment from 13 Jul 2026 in “Building and Shipping Mac and iOS Apps Without Ever Opening Xcode” Free and open source
“as the creator/maintainer of the free/open source Axiom for iOS/macOS devs”
Comment from 30 May 2026 in “Ask HN: What Is the State of App Development in 2026?” “You may find Axiom (my FOSS project, updated for iPhone Duo) helpful.”
Comment from 18 Sep 2026 in “Xcode 27.1 Beta Release Notes” “the SwiftUI performance auditor in a free/FOSS project of mine”
Comment from 21 Apr 2026 in “Tim Cook to become Apple Executive Chairman” - Comment from 18 Sep 2026 in “Xcode 27.1 Beta Release Notes”
Praised as excellent and useful
“Looks like you really did a good job, though!”
Comment from 26 May 2026 in “Use Boring Languages with LLMs” “Use axiom all the time thanks for your work.”
Comment from 13 Jul 2026 in “Building and Shipping Mac and iOS Apps Without Ever Opening Xcode” “Axiom is excellent, thanks for making it!”
Comment from 13 Jul 2026 in “Building and Shipping Mac and iOS Apps Without Ever Opening Xcode” - Comment from 11 Jan 2026 in “Datadog, Thank You for Blocking Us”
Useful for logs and tracing
“We also use Axiom MCP so when we need some trace or event in the logs the agents look for it”
Comment from 22 Aug 2026 in “OTel Isn't Going Well (and I Made a Spreadsheet About It)” “I can do this with axiom already and I’ve never worried about how to log.”
Comment from 21 Dec 2025 in “Logging sucks” “I like the end result of OpenTelemetry tracing when using Axiom”
Comment from 22 Aug 2026 in “OTel Isn't Going Well (and I Made a Spreadsheet About It)” - Comment from 15 Nov 2025 in “I can't recommend Grafana anymore”
What people warn about
Each mark is one comment
Seen as low-effort AI hype
“its just a 50 line python file, pretty sure its AI slop XD”
Comment from 31 Jul 2026 in “Show HN: Axioma – Stream and data compression engine for low-bandwidth links” “seems like excesses of AI boom era”
Comment from 28 Oct 2026 in “Classification of Finite Simple Groups Formalized in Lean” Does little for code review
“Axiom won't do much for code review or generation.”
Comment from 13 Jul 2026 in “Building and Shipping Mac and iOS Apps Without Ever Opening Xcode”
Other agent skills people recommend
The four most recommended other agent skills, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Superpowers | 138 | 72 | 66% | 12 | 4 mo7 owners | — |
| Claude Skills | 59 | 26 | 69% | 11 | — | Approved |
| grill-me skill by Matt Pocock | 39 | 2 | 95% | 8 | — | Approved |
| Get Shit Done | 31 | 32 | 49% | 7 | — | — |
| Axiom by Charles WiltgenThis page | 16 | 2 | 89% | 11 | — | Approved |
What people said
25 of the 28 comments that mention it, newest first. Each links to the original comment.
“seems like excesses of AI boom era”
“we reached a point where the majority of queries are coming through our mcp server”
“You may find Axiom (my FOSS project, updated for iPhone Duo) helpful.”
“my FOSS project, updated for iPhone Duo”
“We also use Axiom MCP so when we need some trace or event in the logs the agents look for it”
“I like the end result of OpenTelemetry tracing when using Axiom”
“initially created Axiom as a private skills suite before deciding that it was too helpful not to share”
“its just a 50 line python file, pretty sure its AI slop XD”
“AI advances on open problems in research and with LLM technology like with Axiom are making it an exciting time for math research”
“Axiom won't do much for code review or generation.”
“Use axiom all the time thanks for your work.”
“Axiom is excellent, thanks for making it!”
“does a good job of helping coding harnesses know how to do this effectively for Apple OS development”
“The effectiveness of my project Axiom (a skill/agent suite for Apple OS developers) has benefited enormously from the knowledge that Superpowers' creator Jesse Vincent has been kind enough to share.”
“Suite of skills, agents, and tools that make general SOTA models actually good at building and/or auditing iOS/macOS apps”
“bumped the free plan to 3 datasets so everyone can take full advantage of the ax”
“as the creator/maintainer of the free/open source Axiom for iOS/macOS devs”
“Looks like you really did a good job, though!”
“the SwiftUI performance auditor in a free/FOSS project of mine”
“The plug-in system is also excellent, allowing me to build things like https://charleswiltgen.github.io/Axiom/ that everyone can benefit from.”
“should now work great from within Xcode since Apple's using Claude Code SDK”
“Anytime you're designing something refer to Axiom, Claude needs its skills and agents to steer designs.”
“Axiom's been great and very cheap”
“I can do this with axiom already and I’ve never worried about how to log.”
“I moved away from Grafana to Axiom and have not looked back”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.