Review Hog Perspective Performance Reliability
PostHog/posthog
The Performance & Reliability review perspective for PostHog Review.
How the agent must perform writes so they actually persist under the hosted foreground run budget and long-running background handoffs.
No licenceAuto-check passed
Install Reliable Mutations
$ npx skills add BuilderIO/agent-native --skill reliable-mutations -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install BuilderIO/agent-native reliable-mutations --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/BuilderIO/agent-native.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/reliable-mutations .claude/skills/reliable-mutations && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "reliable-mutations" agent skill from https://github.com/BuilderIO/agent-native/tree/main/.agents/skills/reliable-mutations into .claude/skills/reliable-mutations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reliable-mutations", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/BuilderIO/agent-native/tree/main/.agents/skills/reliable-mutationsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add BuilderIO/agent-native --skill reliable-mutations -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install BuilderIO/agent-native reliable-mutations --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/BuilderIO/agent-native.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/reliable-mutations .agents/skills/reliable-mutations && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "reliable-mutations" agent skill from https://github.com/BuilderIO/agent-native/tree/main/.agents/skills/reliable-mutations into .agents/skills/reliable-mutations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reliable-mutations", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add BuilderIO/agent-native --skill reliable-mutations -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install BuilderIO/agent-native reliable-mutations --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/BuilderIO/agent-native.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/reliable-mutations .cursor/skills/reliable-mutations && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "reliable-mutations" agent skill from https://github.com/BuilderIO/agent-native/tree/main/.agents/skills/reliable-mutations into .cursor/skills/reliable-mutations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reliable-mutations", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/BuilderIO/agent-native.git --path .agents/skills/reliable-mutations--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add BuilderIO/agent-native --skill reliable-mutations -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install BuilderIO/agent-native reliable-mutations --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/BuilderIO/agent-native.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/reliable-mutations .gemini/skills/reliable-mutations && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "reliable-mutations" agent skill from https://github.com/BuilderIO/agent-native/tree/main/.agents/skills/reliable-mutations into .gemini/skills/reliable-mutations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reliable-mutations", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install BuilderIO/agent-native reliable-mutationsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add BuilderIO/agent-native --skill reliable-mutations -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/BuilderIO/agent-native.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/reliable-mutations .github/skills/reliable-mutations && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "reliable-mutations" agent skill from https://github.com/BuilderIO/agent-native/tree/main/.agents/skills/reliable-mutations into .github/skills/reliable-mutations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reliable-mutations", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add BuilderIO/agent-native --skill reliable-mutations -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install BuilderIO/agent-native reliable-mutations --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/BuilderIO/agent-native.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/reliable-mutations .opencode/skills/reliable-mutations && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "reliable-mutations" agent skill from https://github.com/BuilderIO/agent-native/tree/main/.agents/skills/reliable-mutations into .opencode/skills/reliable-mutations/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reliable-mutations", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
reliable-mutations- GitHub stars
- 7.1k
- Token cost
- ~855 tokens
- SKILL.md length
- 488 words
- Files
- 1
- Skills in repo
- 102
- Repo updated
- First seen
- Licence
- None found
At a glance
How the agent must perform writes so they actually persist under the hosted foreground run budget and long-running background handoffs.
- Works in 5 steps: Prefer a single atomic call. If an… → Do not loop many small writes under any… → Verify the end state after writing.… → …
- Batch-write app data — especially do this for many items loops
- SKILL.md covers Rule, Why, How and Don't, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Reliable Mutations is an agent skill from BuilderIO/agent-native. How the agent must perform writes so they actually persist under the hosted foreground run budget and long-running background handoffs. Use whenever you create, update, delete, or batch-write app data — especially "do this for many items" loops, or any task where the user expects N things to end up saved.
Its SKILL.md is about 860 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: A framework for building agentic apps.
When your agent uses it
- Batch-write app data — especially do this for many items loops
- Any task where the user expects N things to end up saved
Example prompts
- “do this for many items”
- “/reliable-mutations”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Prefer a single atomic call. If an action accepts the whole set (add
- Do not loop many small writes under any run budget. A sequence of N
- Verify the end state after writing. Re-read the data (a list/read action,
- Report proof-of-done, not vibes. State concrete evidence: "saved 12 of 12
- On a time-budget cutoff, fail loud. If the turn is cut before the change
What it can do on your machine
Read from SKILL.md and the folder at commit e16da0c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Reliable Mutations loads about 855 tokens when it runs. Until then it costs about 81 tokens; SKILL.md has 488 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 488 words (~855 tokens).
“Make a change in one atomic call when the action supports it, then verify the persisted end state and report concrete proof (counts/ids). Never drive a multi-step change by looping many small writes, and never report success from a tool…”
- name
- reliable-mutations
- scope
- dev
Files
Just SKILL.md in .agents/skills/reliable-mutations of BuilderIO/agent-native.
Open the folder on GitHubat commit e16da0c
Compare with similar skills
Reliable Mutations next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Reliable Mutations this skillBuilderIO/agent-native | 7.1k | — | ~855 | Automated safety check: Pass | None | |
| Review Hog Perspective Performance ReliabilityPostHog/posthog | 40k | — | ~1k | Automated safety check: Pass | Custom licence | |
| React Performanceaffaan-m/ECC | 275k | 1 repos | ~4.5k | Automated safety check: Pass | MIT | |
| Performance Profileralirezarezvani/claude-skills | 28k | — | ~684 | Automated safety check: Pass | MIT | |
| Agent Performance Optimizerruvnet/ruflo | 74k | 2 repos | ~3.6k | Automated safety check: Pass | MIT | |
| Handsontable Performance Testinghandsontable/handsontable | 22k | — | ~3.4k | Automated safety check: Pass | Custom licence |
Similar skills
- Official
React Performance
affaan-m/ECC
React and Next.js performance optimization patterns adapted from Vercel Engineering's React Best Practices (https://github.com/vercel-labs/agent-skills).
Performance Profiler
alirezarezvani/claude-skills
Systematic performance profiling for Node.js, Python, and Go applications.
Agent Performance Optimizer
ruvnet/ruflo
Agent skill for performance-optimizer - invoke with $agent-performance-optimizer
Handsontable Performance Testing
handsontable/handsontable
Guide to Handsontable's performance-tests package: Playwright scenarios measured through CDP traces and compared against golden baselines taken from the develop branch.
Performance Management
sickn33/agentic-awesome-skills
Performance review register: review type, period, employee and reviewer, KPI, OKR and behaviour scores, overall rating, PIP and promotion flags, development plan.
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Triage feedback from docs, issues, Slack threads, or pasted notes into verified bugs, UX proposals, unclear questions, and skipped noise.
Audit Log
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Questions about Reliable Mutations
What does Reliable Mutations do?
How the agent must perform writes so they actually persist under the hosted foreground run budget and long-running background handoffs. Reliable Mutations is an agent skill from BuilderIO/agent-native. How the agent must perform writes so they actually persist under the hosted foreground run budget and long-running background handoffs.
When should I use Reliable Mutations?
Reliable Mutations fits situations like: batch-write app data — especially do this for many items loops; any task where the user expects N things to end up saved.
How do I install Reliable Mutations in Claude Code?
Run `npx skills add BuilderIO/agent-native --skill reliable-mutations -a claude-code`. Or copy the skill folder (.agents/skills/reliable-mutations in BuilderIO/agent-native) into .claude/skills/reliable-mutations in your project. Claude Code loads it when a task matches its description.
How do I install Reliable Mutations in Codex?
Run `npx skills add BuilderIO/agent-native --skill reliable-mutations -a codex`. Or copy the skill folder (.agents/skills/reliable-mutations in BuilderIO/agent-native) into .agents/skills/reliable-mutations in your project. Codex loads it when a task matches its description.
Can I use Reliable Mutations in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add BuilderIO/agent-native --skill reliable-mutations -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/reliable-mutations, .gemini/skills/reliable-mutations, .github/skills/reliable-mutations and .opencode/skills/reliable-mutations in your project.
What does Reliable Mutations need to run?
SKILL.md names no scripts, command-line tools or credentials: Reliable Mutations is instructions for the agent only.
Does Reliable Mutations access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Reliable Mutations safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Reliable Mutations use?
No licence was found for Reliable Mutations or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Reliable Mutations use?
About 855 tokens (SKILL.md is roughly 3.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Reliable Mutations?
Skills that share tags, products or a category with Reliable Mutations: Review Hog Perspective Performance Reliability (PostHog/posthog, 40k stars), React Performance (affaan-m/ECC, 275k stars), Performance Profiler (alirezarezvani/claude-skills, 28k stars) and Agent Performance Optimizer (ruvnet/ruflo, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Reliable Mutations?
BuilderIO (a GitHub organization) maintains it in BuilderIO/agent-native, which has 7,087 GitHub stars. The repository holds 102 skills in this directory. The repository was last updated on October 8, 2026.
Source: BuilderIO/agent-native on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.