memory-first-investigator

memory-first-investigator is an agent for Claude Code from johnnyjoy/pluribus. It costs 52 tokens per session (208 once invoked), scanned A, original, no licence file.

A multi-step debugging workflow that searches past team decisions and work before investigating a problem.

In plain words
What is it for?
It is for investigating regressions, bugs spanning several files, production-like failures, and issues where previous team decisions matter.
Why use it?
It helps avoid repeating earlier investigations or overlooking information that may explain a regression, cross-file bug, or incident.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter.

Part of the pluribus plugin — 6 skills, 1 agent, 3 hooks, 1 MCP server shipped together

Good fit It is for investigating regressions, bugs spanning several files, production-like failures, and issues where previous team decisions matter.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/johnnyjoy/pluribus/memory-first-investigator
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.

Clone the repo
git clone --depth 1 https://github.com/johnnyjoy/pluribus

Made for: Claude Code.

Or install pluribus, the plugin that ships this one along with the rest of its 6 skills, 1 agent, 3 hooks, 1 MCP server.

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 memory-first-investigator

README.md
[![agentmods](https://agentmods.dev/badge/agents/johnnyjoy/pluribus/memory-first-investigator/github.svg)](https://agentmods.dev/agents/johnnyjoy/pluribus/memory-first-investigator)
Your own site
<a href="https://agentmods.dev/agents/johnnyjoy/pluribus/memory-first-investigator"><img src="https://agentmods.dev/badge/agents/johnnyjoy/pluribus/memory-first-investigator/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 memory-first-investigator

Your own site · 80×15
<a href="https://agentmods.dev/agents/johnnyjoy/pluribus/memory-first-investigator"><img src="https://agentmods.dev/badge/agents/johnnyjoy/pluribus/memory-first-investigator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 208 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 unknown 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 $0.00052 $0.00208
Opus 5 $0.00026 $0.00104
Sonnet 5 $0.00010 $0.00042
Haiku 4.5 $0.00005 $0.00021

Measured 8d ago against content hash dce3e9ef5b8e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

memory-first-investigator 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.

integrations/claude-code-plugin/agents/memory-first-investigator.md · 18 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 · 18 lines · 52 tokens per session scan A dce3e9ef5b8e

Subscribe to this mod's changes

memory-first-investigator is an agent published in the GitHub repository johnnyjoy/pluribus (9 stars, last pushed 2mo ago), with no licence file. It adds 52 tokens to every session and 208 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.

Related

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