Engine Whats New
flutter/flutter
Generates the "what's new" release summary and diff file for changes in the Flutter engine (//engine/src/flutter) between two releases (e.g., 3.47 vs 3.44).
A skill your agent uses when analyzing AppsFlyer Flutter Plugin payloads, contracts, or data schemas — identifying what each field means, which component produces it, spotting anomalies, debugging…
Install Erin Flutter Analyst
$ npx skills add AppsFlyerSDK/appsflyer-flutter-plugin --skill erin-flutter-analyst -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install AppsFlyerSDK/appsflyer-flutter-plugin erin-flutter-analyst --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/AppsFlyerSDK/appsflyer-flutter-plugin.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/erin-flutter-analyst .claude/skills/erin-flutter-analyst && 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 "erin-flutter-analyst" agent skill from https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin/tree/master/.claude/skills/erin-flutter-analyst into .claude/skills/erin-flutter-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "erin-flutter-analyst", 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/AppsFlyerSDK/appsflyer-flutter-plugin/tree/master/.claude/skills/erin-flutter-analystType 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 AppsFlyerSDK/appsflyer-flutter-plugin --skill erin-flutter-analyst -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install AppsFlyerSDK/appsflyer-flutter-plugin erin-flutter-analyst --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/erin-flutter-analyst .agents/skills/erin-flutter-analyst && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "erin-flutter-analyst" agent skill from https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin/tree/master/.claude/skills/erin-flutter-analyst into .agents/skills/erin-flutter-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "erin-flutter-analyst", 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 AppsFlyerSDK/appsflyer-flutter-plugin --skill erin-flutter-analyst -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install AppsFlyerSDK/appsflyer-flutter-plugin erin-flutter-analyst --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/erin-flutter-analyst .cursor/skills/erin-flutter-analyst && 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 "erin-flutter-analyst" agent skill from https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin/tree/master/.claude/skills/erin-flutter-analyst into .cursor/skills/erin-flutter-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "erin-flutter-analyst", 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/AppsFlyerSDK/appsflyer-flutter-plugin.git --path .claude/skills/erin-flutter-analyst--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 AppsFlyerSDK/appsflyer-flutter-plugin --skill erin-flutter-analyst -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install AppsFlyerSDK/appsflyer-flutter-plugin erin-flutter-analyst --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/erin-flutter-analyst .gemini/skills/erin-flutter-analyst && 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 "erin-flutter-analyst" agent skill from https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin/tree/master/.claude/skills/erin-flutter-analyst into .gemini/skills/erin-flutter-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "erin-flutter-analyst", 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 AppsFlyerSDK/appsflyer-flutter-plugin erin-flutter-analystInstalls 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 AppsFlyerSDK/appsflyer-flutter-plugin --skill erin-flutter-analyst -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/erin-flutter-analyst .github/skills/erin-flutter-analyst && 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 "erin-flutter-analyst" agent skill from https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin/tree/master/.claude/skills/erin-flutter-analyst into .github/skills/erin-flutter-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "erin-flutter-analyst", 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 AppsFlyerSDK/appsflyer-flutter-plugin --skill erin-flutter-analyst -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install AppsFlyerSDK/appsflyer-flutter-plugin erin-flutter-analyst --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/erin-flutter-analyst .opencode/skills/erin-flutter-analyst && 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 "erin-flutter-analyst" agent skill from https://github.com/AppsFlyerSDK/appsflyer-flutter-plugin/tree/master/.claude/skills/erin-flutter-analyst into .opencode/skills/erin-flutter-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "erin-flutter-analyst", 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
erin-flutter-analyst- GitHub stars
- 187
- Token cost
- ~937 tokens
- SKILL.md length
- 277 words
- Files
- 1
- Skills in repo
- 6
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when analyzing AppsFlyer Flutter Plugin payloads, contracts, or data schemas — identifying what each field means, which component produces it, spotting anomalies, debugging…
- Works in 3 steps: Check if this type has existing analysis → Load the field map reference:… → Load the reference payload/schema:…
- Analyzing AppsFlyer Flutter Plugin payloads
- SKILL.md covers Persona, Core Discipline, Analysis Document Format and Documentation Conventions, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Erin Flutter Analyst is an agent skill from AppsFlyerSDK/appsflyer-flutter-plugin. Use when analyzing AppsFlyer Flutter Plugin payloads, contracts, or data schemas — identifying what each field means, which component produces it, spotting anomalies, debugging missing or wrong values, or documenting schemas. In feature work, Erin is invoked by Alice after Alice produces a PRD; do not invoke Erin as the entry point for feature requests.
Its SKILL.md is about 940 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Mobile, covering Cross-platform mobile apps. It works with Flutter and Dart. The repository describes itself as: Flutter Plugin for AppsFlyer SDK. The licence is MIT.
When your agent uses it
- Analyzing AppsFlyer Flutter Plugin payloads
- Data schemas — identifying what each field means
- Which component produces it
- Spotting anomalies
Example prompts
- “/erin-flutter-analyst”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Check if this type has existing analysis
- Load the field map reference: docs/payloads/FIELD_MAP.md
- Load the reference payload/schema: docs/payloads/template.json
What it can do on your machine
Read from SKILL.md and the folder at commit 3251787. 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 (its code samples are markdown).
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
Erin Flutter Analyst loads about 937 tokens when it runs. Until then it costs about 94 tokens; SKILL.md has 277 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
The full file from AppsFlyerSDK/appsflyer-flutter-plugin at commit 3251787, republished under its MIT licence (© AppsFlyerSDK). 277 words, ~937 tokens.
Download SKILL.mdSave it as
.claude/skills/erin-flutter-analyst/SKILL.md (or your agent's skills folder).- name
- erin-flutter-analyst
- description
- Use when analyzing AppsFlyer Flutter Plugin payloads, contracts, or data schemas — identifying what each field means, which component produces it, spotting anomalies, debugging missing or wrong values, or documenting schemas. In feature work, Erin is invoked by Alice after Alice produces a PRD; do not invoke Erin as the entry point for feature requests.
Erin — AppsFlyer Flutter Plugin Domain Analyst
Persona
Domain analyst for AppsFlyer Flutter Plugin. Knows every field in AppsFlyer Flutter Plugin payloads and contracts, which component produces it, what normal values look like, and what anomalies signal bugs or misconfigurations. Does not write implementation code — produces structured analysis documents.
Core Discipline
Before analyzing any payload or contract
- Check if this type has existing analysis:
grep -i "<endpoint or payload type>" docs/payloads/INDEX.md - Load the field map reference:
docs/payloads/FIELD_MAP.md - Load the reference payload/schema:
docs/payloads/template.json
Required output
Every analysis produces docs/payloads/P-NNN-slug.md. After writing:
- Add an entry to
docs/payloads/INDEX.md - Flag any fields that suggest a feature doc (F-NNN) needs updating
- Update
docs/payloads/FIELD_MAP.mdif new fields are discovered
Analysis Document Format
---
id: P-NNN
title: <payload type and context>
endpoint: <e.g. /v1/event>
version: <e.g. SDK 6.15.1>
platform: <e.g. iOS 15.8 / Flutter>
event-type: <e.g. install / session / in-app-event>
status: draft | complete
date: YYYY-MM-DD
related-features: [F-NNN, F-NNN]
related-issue-cases: [IC-NNN, IC-NNN]
---
## Context
What triggered this analysis — PRD requirement for [feature], customer report, QA finding, CI diff, etc.
## Field Inventory
| Field | Observed Value | Expected | Notes |
|-------|---------------|----------|-------|
## Anomalies Found
Numbered list. For each: field, observed value, expected value, feature/IC it maps to.
## Impact
What the payload state implies about behavior — which code path ran, which did not.
Flag if a feature doc (F-NNN) needs updating.
## Open Questions
Fields or behaviors requiring further investigation.Documentation Conventions
- Never echo raw PII, API keys, tokens, or receipt data in analysis docs — describe type and format only
- Link fields to
F-NNNandIC-NNNcross-references - No personal names — use roles, ticket references, or bundle IDs
Alice Review Loop
After Erin presents any analysis findings, alice-pm is invoked automatically. Erin must address every challenge item Alice raises. The loop closes only when Alice explicitly writes "Satisfied — Erin, this is ready."
Reference
docs/payloads/template.json— canonical reference payload (sanitized)docs/payloads/FIELD_MAP.md— complete field-to-feature-to-issue-case mappingdocs/payloads/INDEX.md— index of all payload analysesinternal-docs/features/INDEX.md— feature cataloginternal-docs/issue-cases/INDEX.md— bug history
Domain-Specific Notes
- Field maps live at the MethodChannel/EventChannel boundary — arguments passed as
Map<String, dynamic>between Dart and native. - JSON-serializable Dart models:
lib/src/purchase_connector/(in-app purchase validation payloads) — regenerate.g.dartviabuild_runnerafter any field change. - Attribution/conversion data payloads flow through
lib/src/callbacks.dart— check both the Dart model and the native (Kotlin/Swift) side that populates the EventChannel data. - When mapping fields, verify parity between what Android and iOS native code send — historically a source of drift.
© AppsFlyerSDK, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/erin-flutter-analyst of AppsFlyerSDK/appsflyer-flutter-plugin.
Open the folder on GitHubat commit 3251787
Compare with similar skills
Erin Flutter Analyst 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 |
|---|---|---|---|---|---|---|
| Erin Flutter Analyst this skillAppsFlyerSDK/appsflyer-flutter-plugin | 187 | — | ~937 | Automated safety check: Pass | MIT | |
| Engine Whats Newflutter/flutter | 179k | — | ~978 | Automated safety check: Pass | BSD-3-Clause | |
| Flutter Cherry Pickflutter/flutter | 179k | — | ~1.8k | Automated safety check: Pass | BSD-3-Clause | |
| Upgrade Browserflutter/flutter | 179k | — | ~1.1k | Automated safety check: Pass | BSD-3-Clause | |
| Bump Dartflutter/flutter | 179k | — | ~1.2k | Automated safety check: Pass | BSD-3-Clause | |
| Run Devicelab With Ledflutter/flutter | 179k | — | ~786 | Automated safety check: Pass | BSD-3-Clause |
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Related
Categories
Questions about Erin Flutter Analyst
What does Erin Flutter Analyst do?
A skill your agent uses when analyzing AppsFlyer Flutter Plugin payloads, contracts, or data schemas — identifying what each field means, which component produces it, spotting anomalies, debugging…. Erin Flutter Analyst is an agent skill from AppsFlyerSDK/appsflyer-flutter-plugin. Use when analyzing AppsFlyer Flutter Plugin payloads, contracts, or data schemas — identifying what each field means, which component produces it, spotting anomalies, debugging missing or wrong values, or documenting schemas.
When should I use Erin Flutter Analyst?
Erin Flutter Analyst fits situations like: analyzing AppsFlyer Flutter Plugin payloads; data schemas — identifying what each field means; which component produces it; spotting anomalies.
How do I install Erin Flutter Analyst in Claude Code?
Run `npx skills add AppsFlyerSDK/appsflyer-flutter-plugin --skill erin-flutter-analyst -a claude-code`. Or copy the skill folder (.claude/skills/erin-flutter-analyst in AppsFlyerSDK/appsflyer-flutter-plugin) into .claude/skills/erin-flutter-analyst in your project. Claude Code loads it when a task matches its description.
How do I install Erin Flutter Analyst in Codex?
Run `npx skills add AppsFlyerSDK/appsflyer-flutter-plugin --skill erin-flutter-analyst -a codex`. Or copy the skill folder (.claude/skills/erin-flutter-analyst in AppsFlyerSDK/appsflyer-flutter-plugin) into .agents/skills/erin-flutter-analyst in your project. Codex loads it when a task matches its description.
Can I use Erin Flutter Analyst 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 AppsFlyerSDK/appsflyer-flutter-plugin --skill erin-flutter-analyst -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/erin-flutter-analyst, .gemini/skills/erin-flutter-analyst, .github/skills/erin-flutter-analyst and .opencode/skills/erin-flutter-analyst in your project.
What does Erin Flutter Analyst need to run?
SKILL.md names no scripts, command-line tools or credentials: Erin Flutter Analyst is instructions for the agent only.
Does Erin Flutter Analyst 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 Erin Flutter Analyst 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 Erin Flutter Analyst use?
Erin Flutter Analyst is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Erin Flutter Analyst use?
About 937 tokens (SKILL.md is roughly 3.7k 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 Erin Flutter Analyst?
Skills that share tags, products or a category with Erin Flutter Analyst: Engine Whats New (flutter/flutter, 179k stars), Flutter Cherry Pick (flutter/flutter, 179k stars), Upgrade Browser (flutter/flutter, 179k stars) and Bump Dart (flutter/flutter, 179k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Erin Flutter Analyst?
AppsFlyerSDK (a GitHub organization) maintains it in AppsFlyerSDK/appsflyer-flutter-plugin, which has 187 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on September 15, 2026.
Source: AppsFlyerSDK/appsflyer-flutter-plugin on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.