rememb-mcp

rememb-mcp is a skill for Claude Code, Codex from LuizEduPP/Rememb. It costs 44 tokens per session (267 once invoked), scanned A, original, MIT.

A guide for safely changing the tools and response formats of an MCP server. MCP is a standard way for an AI assistant to call external tools, so these changes can affect existing clients.

In plain words
What is it for?
Use it when updating MCP schemas or handlers, keeping storage and tool layers aligned, and running focused checks after contract changes.
Why use it?
It helps preserve compatibility when changing tool definitions, validation rules, or returned messages.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/luizedupp/rememb/rememb-mcp
Any agent
npx skills add LuizEduPP/Rememb --skill rememb-mcp
Clone the repo
git clone --depth 1 https://github.com/LuizEduPP/Rememb

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 rememb-mcp

README.md
[![agentmods](https://agentmods.dev/badge/skills/luizedupp/rememb/rememb-mcp.svg)](https://agentmods.dev/skills/luizedupp/rememb/rememb-mcp)
Your own site
<a href="https://agentmods.dev/skills/luizedupp/rememb/rememb-mcp"><img src="https://agentmods.dev/badge/skills/luizedupp/rememb/rememb-mcp.svg" alt="Measured on agentmods" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 267 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00044 $0.00267
Opus 5 $0.00022 $0.00133
Sonnet 5 $0.00009 $0.00053
Haiku 4.5 $0.00004 $0.00027

Measured 4d ago against content hash 969aaeede3c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rememb-mcp 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 4d 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.

src/rememb_skills/rememb-mcp/SKILL.md · 37 lines

What it actually says

Rememb MCP Skill

Overview

Use this skill when working on rememb MCP tools, schemas, response strings, and backward-compatible server behavior.

When to Use

Apply this skill when a task changes MCP contracts, tool definitions, response formats, or compatibility-sensitive server logic.

Core Workflow

  1. Identify the MCP-facing contract being changed.
  2. Keep store and MCP layers aligned in arguments, validation, and returned messages.
  3. Preserve existing tool names and defaults unless the change is explicitly additive.
  4. Run a narrow contract-focused validation after the change.

Examples

  • Updating a tool schema in mcp_server.py
  • Adjusting MCP response strings without breaking clients
  • Verifying compatibility-sensitive handler changes

Best Practices

  • Preserve existing MCP tool names and defaults unless the change is explicitly additive.
  • Keep store and MCP layers aligned in arguments, validation, and returned messages.
  • Prefer narrow tests on the MCP contract after changing tool registration or handlers.

References

  • See the repository MCP instructions and adjacent MCP server handlers for contract details.
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. 4d ago First seen · 37 lines · 44 tokens per session scan A 969aaeede3c3

Subscribe to this mod's changes

rememb-mcp is a skill published in the GitHub repository LuizEduPP/Rememb (4 stars, last pushed 1mo ago), licensed MIT. It adds 44 tokens to every session and 267 once invoked, about $0.0002 per session on Opus 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 2026-08-31.

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