mem9-store

mem9-store is a skill for Claude Code from unvulcanised-watercress762/mem9. It costs 30 tokens per session (325 once invoked), scanned A, original, Apache-2.0.

A focused review for decisions about an API, which is the agreed way software systems exchange requests and responses.

In plain words
What is it for?
Use it when adding or changing an external API, handling OAuth or permissions, verifying webhooks, choosing an API style, or changing an internal API used by several independent consumers.
Why use it?
It helps resolve risky choices about compatibility, authentication, webhooks, or whether to use REST, RPC, GraphQL, WebSockets, or another communication style.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the mem9 plugin — 3 skills, 3 hooks shipped together

Good fit Use it when adding or changing an external API, handling OAuth or permissions, verifying webhooks, choosing an API style, or changing an internal API used by several independent consumers.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/unvulcanised-watercress762/mem9/mem9-store
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 unvulcanised-watercress762/mem9 --skill mem9-store
Clone the repo
git clone --depth 1 https://github.com/unvulcanised-watercress762/mem9

Made for: Claude Code.

Or install mem9, the plugin that ships this one along with the rest of its 3 skills, 3 hooks.

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 mem9-store

README.md
[![agentmods](https://agentmods.dev/badge/skills/unvulcanised-watercress762/mem9/mem9-store/github.svg)](https://agentmods.dev/skills/unvulcanised-watercress762/mem9/mem9-store)
Your own site
<a href="https://agentmods.dev/skills/unvulcanised-watercress762/mem9/mem9-store"><img src="https://agentmods.dev/badge/skills/unvulcanised-watercress762/mem9/mem9-store/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 mem9-store

Your own site · 80×15
<a href="https://agentmods.dev/skills/unvulcanised-watercress762/mem9/mem9-store"><img src="https://agentmods.dev/badge/skills/unvulcanised-watercress762/mem9/mem9-store.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 325 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00030 $0.00325
Opus 5 $0.00015 $0.00162
Sonnet 5 $0.00006 $0.00065
Haiku 4.5 $0.00003 $0.00032

Measured 11d ago against content hash 40bdfb8df022, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

mem9-store scanned grade A with 1 finding 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 11d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

3. **Store** with a single curl call:
claude-plugin/skills/mem9-store/SKILL.md · 32 lines

What it actually says

You are a memory storage agent for the Mem9 shared memory system. Your job is to save information that should persist across sessions.

Steps

  1. Extract the memory: From the user's request, identify what should be remembered. Be concise but preserve all key details (IPs, names, decisions, configs, etc.).

  2. Choose tags: Pick 1-3 short tags that categorize this memory (e.g., infra, decision, config, debugging, team).

  3. Store with a single curl call:

curl -sf --max-time 8 \
  -H "Content-Type: application/json" \
  -d '{"content":"THE MEMORY CONTENT","tags":["tag1","tag2"],"source":"claude-code"}' \
  "${MEM9_API_URL:-https://api.mem9.ai}/v1alpha1/mem9s/${MEM9_TENANT_ID}/memories"
  1. Confirm: Tell the user what was saved. Be specific about the content stored.

Guidelines

  • Keep memory content concise but complete — include specific values (IPs, versions, names)
  • Set source to claude-code
  • If the user says "remember X", "note down X", "save X for later" — this is your cue
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. 11d ago First seen · 32 lines · 30 tokens per session scan A 40bdfb8df022

Subscribe to this mod's changes

mem9-store is a skill published in the GitHub repository unvulcanised-watercress762/mem9 (3 stars, last pushed yesterday), licensed Apache-2.0. It adds 30 tokens to every session and 325 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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