goodvibes-memory

goodvibes-memory is a skill for Claude Code from mgd34msu/goodvibes-plugin. It costs 69 tokens per session (813 once invoked), scanned A, original, MIT.

A set of project memory files stored in .goodvibes/memory/ as plain JSON. They record decisions, reusable patterns, failed approaches, and preferences between work sessions.

In plain words
What is it for?
Use it to review earlier decisions before working and record what was learned before finishing.
Why use it?
It prevents an agent from losing useful project context when a new session starts.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the goodvibes plugin — 6 skills, 5 commands, 4 agents, 9 hooks, 3 MCP servers shipped together

Good fit Use it to review earlier decisions before working and record what was learned before finishing.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mgd34msu/goodvibes-plugin/goodvibes-memory
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 mgd34msu/goodvibes-plugin --skill goodvibes-memory
Clone the repo
git clone --depth 1 https://github.com/mgd34msu/goodvibes-plugin

Made for: Claude Code.

Or install goodvibes, the plugin that ships this one along with the rest of its 6 skills, 5 commands, 4 agents, 9 hooks, 3 MCP servers.

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 goodvibes-memory

README.md
[![agentmods](https://agentmods.dev/badge/skills/mgd34msu/goodvibes-plugin/goodvibes-memory/github.svg)](https://agentmods.dev/skills/mgd34msu/goodvibes-plugin/goodvibes-memory)
Your own site
<a href="https://agentmods.dev/skills/mgd34msu/goodvibes-plugin/goodvibes-memory"><img src="https://agentmods.dev/badge/skills/mgd34msu/goodvibes-plugin/goodvibes-memory/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 goodvibes-memory

Your own site · 80×15
<a href="https://agentmods.dev/skills/mgd34msu/goodvibes-plugin/goodvibes-memory"><img src="https://agentmods.dev/badge/skills/mgd34msu/goodvibes-plugin/goodvibes-memory.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 813 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 $0.00069 $0.00813
Opus 5 $0.00034 $0.00407
Sonnet 5 $0.00014 $0.00163
Haiku 4.5 $0.00007 $0.00081

Measured 8d ago against content hash 7ab6fa7869d8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

goodvibes-memory 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 8d 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.

plugins/goodvibes/skills/goodvibes-memory/SKILL.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

goodvibes-memory

Project memory that survives across sessions, stored under .goodvibes/memory/.

Four files, each a plain JSON array. Plain JSON is the point: any tool can read or write these without a parser written specifically for them, so the format cannot drift away from the code that reads it.

Files and shapes

.goodvibes/memory/decisions.json: architectural choices and why.

[{ "title": "Use tRPC for the API layer", "date": "2026-07-02",
   "rationale": "End-to-end type safety with the existing Next.js app",
   "alternatives": ["REST + OpenAPI", "GraphQL"], "agent": "architect" }]

.goodvibes/memory/patterns.json: established, reusable approaches.

[{ "name": "Repository pattern for data access", "date": "2026-07-02",
   "description": "All DB access goes through src/repositories/*, never direct Prisma calls in routes",
   "files": ["src/repositories/user-repository.ts"] }]

.goodvibes/memory/failures.json: approaches that were tried and didn't work.

[{ "date": "2026-07-02", "approach": "Bash failed: npm ERR! ERESOLVE ...",
   "reason": "Exhausted 6 attempts across 3 phases", "suggestion": "Manual intervention required" }]

This file is also written automatically: the PostToolUseFailure hook appends an entry here when its 3-phase fix loop exhausts all attempts on a given error (see post-tool-use-failure.mjs). That's the only automatic write in this system. Everything else is something an agent does deliberately.

.goodvibes/memory/preferences.json: project conventions worth remembering.

[{ "key": "test-framework", "value": "vitest", "date": "2026-07-02",
   "notes": "Project already had vitest configured; don't introduce jest" }]

How to use it

At the start of a task: check decisions.json and patterns.json for anything relevant to what you're about to do, and failures.json for approaches already known not to work. Don't propose one of them again without a reason things have changed. All four files are plain JSON; read them with code_read or native Read, whichever is simpler for a small file.

Read the full file on GitHub · 66 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. 8d ago First seen · 66 lines · 69 tokens per session scan A 7ab6fa7869d8

Subscribe to this mod's changes

goodvibes-memory is a skill published in the GitHub repository mgd34msu/goodvibes-plugin (6 stars, last pushed 15d ago), licensed MIT. It adds 69 tokens to every session and 813 once invoked, about $0.0003 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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