cloudflare-kv
About
This skill enables developers to persist tool data in Cloudflare KV using the shared `TOOLS_KV` namespace. It provides conventions for key naming with `<tool-name>:<key>` structure and recommends storing small JSON blobs or strings. Use this skill when you need to implement atomic operations like get/put/delete while handling null cases and maintaining data isolation between tools.
Documentation
Cloudflare KV basics
- Cloudflare deploys a shared KV namespace bound as
TOOLS_KVfor all tools. Use the binding directly; do not create new namespaces per tool. - Structure keys as
<tool-name>:<key>so data stays isolated between tools. - Store small JSON blobs or strings. For structured data, serialize to JSON and document the schema in the tool README.
Access patterns
- Prefer atomic operations like
TOOLS_KV.get,put, anddelete. For counters, useTOOLS_KV.get+putwith retries or Workers KV atomic counters when available. - Always handle the
nullcase ongetto avoidundefineddata paths for first-time users. - Cache reads in memory during a single request when multiple lookups are required.
Cloudflare Functions
- Name or prefix Functions after the tool, e.g.
counter_incrementorcounter/functions/incrementso routes stay organized. - In Functions, read and write KV via the
env.TOOLS_KVbinding provided in the handler signature. - Return descriptive error messages and HTTP status codes for KV failures to simplify debugging.
Example
The counter tool stores its count in TOOLS_KV under the key counter:value. Reuse that pattern whenever you need shared state across sessions.
Quick Install
/plugin add https://github.com/dave1010/tools/tree/main/cloudflare-kvCopy and paste this command in Claude Code to install this skill
GitHub 仓库
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