flutter-dio-cache-interceptor-engineering

flutter-dio-cache-interceptor-engineering is a skill for Claude Code, Codex from ariaramin/flutter-skills. It costs 126 tokens per session (7,967 once invoked), scanned A, original, MIT.

A production guide for dio_cache_interceptor, a Dio add-on that stores HTTP responses and can revalidate or reuse them in Flutter and Dart apps.

In plain words
What is it for?
Use it to add, review, debug, test, or tune cached Dio requests and to handle migrations between package versions.
Why use it?
It helps avoid stale or cross-user data when adding response caching. It covers cache policies, storage choices, invalidation, offline fallback, and cache-key isolation for authenticated users.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to add, review, debug, test, or tune cached Dio requests and to handle migrations between package versions.

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Install with agentmods
npx agentmods add skills/ariaramin/flutter-skills/flutter-dio-cache-interceptor-engineering
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add ariaramin/flutter-skills --skill flutter-dio-cache-interceptor-engineering
Clone the repo
git clone --depth 1 https://github.com/ariaramin/flutter-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for flutter-dio-cache-interceptor-engineering

README.md
[![agentmods](https://agentmods.dev/badge/skills/ariaramin/flutter-skills/flutter-dio-cache-interceptor-engineering/github.svg)](https://agentmods.dev/skills/ariaramin/flutter-skills/flutter-dio-cache-interceptor-engineering)
Your own site
<a href="https://agentmods.dev/skills/ariaramin/flutter-skills/flutter-dio-cache-interceptor-engineering"><img src="https://agentmods.dev/badge/skills/ariaramin/flutter-skills/flutter-dio-cache-interceptor-engineering/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for flutter-dio-cache-interceptor-engineering

Your own site · 80×15
<a href="https://agentmods.dev/skills/ariaramin/flutter-skills/flutter-dio-cache-interceptor-engineering"><img src="https://agentmods.dev/badge/skills/ariaramin/flutter-skills/flutter-dio-cache-interceptor-engineering.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 126 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 7,967 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00126 $0.07967
Opus 5.5 $0.00050 $0.03187
Sonnet 5.5 $0.00025 $0.01593
Haiku 4.5 $0.00013 $0.00797

Measured 6d ago against content hash 8c78792a759e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

flutter-dio-cache-interceptor-engineering scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/flutter-dio-cache-interceptor-engineering/SKILL.md · 525 lines

How it starts

The opening of the file, as written. The whole thing — 525 lines — stays where its author put it; the contents beside it link to each section on GitHub.

dio_cache_interceptor — Flutter Production Skill

Purpose

Use this skill to make endpoint-specific, evidence-based decisions about dio_cache_interceptor. Optimize correctness and isolation before hit rate. Inspect the repository's existing Dio, authentication, persistence, dependency-injection, and testing conventions before adding an abstraction or dependency.

Research Basis

  • Research date: 2026-09-02.
  • Target: dio_cache_interceptor 4.0.7, Dart SDK constraint ^3.8.0, Dio ^5.2.0+1, and http_cache_core ^1.1.4 in the published archive.
  • Reviewed: current pub.dev readme, API docs, example, versions and changelog; the maintainer-linked llfbandit/dart_http_cache repository; the exact 4.0.7 pub archive; core strategy/interceptor/store source and official tests; first-party store pages and source.
  • Documentation gaps: the package does not publish performance numbers, cache-size recommendations for persistent stores, a complete interceptor-order contract, request coalescing, encryption key management, or an offline-first synchronization model. Measure and design these in the application.
  • Verified package behavior is labeled Package. Standards context is HTTP. Advice derived for production is Recommendation.
  • Known discrepancies: the main readme calls Isar available on all platforms, while the current http_cache_isar_store package metadata excludes web. The main readme calls MMKV iOS/Android-only, while its package metadata also advertises desktop. Treat Isar as non-web and MMKV as mobile-only until the chosen versions are validated on every target. The file-store package is listed for web by pub.dev metadata, but its web implementation is a no-op.

When to Use This Skill

Use it when a task involves:

  • adding caching to a shared Dio client;
  • reviewing cache policy, keys, storage, or invalidation;
  • reducing safe read latency or network use;
  • implementing explicit stale-on-error behavior;
  • debugging stale, missing, duplicate, or wrong-user responses;
  • selecting a memory or persistent store;
  • handling ETag, Last-Modified, 304, refresh, or logout cleanup;
  • migrating pre-4.x options or old dio_cache_interceptor_*_store package names.

Read the full file on GitHub · 525 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 525 lines · 126 tokens per session scan A 8c78792a759e

Subscribe to this mod's changes

flutter-dio-cache-interceptor-engineering is a skill published in the GitHub repository ariaramin/flutter-skills (6 stars, last pushed 7d ago), licensed MIT. It adds 126 tokens to every session and 7,967 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-11.