memory-init

memory-init is an agent for Claude Code from tm42/mnemograph. It costs 29 tokens per session (573 once invoked), scanned A, original, MIT.

A session-start agent that reads a knowledge graph and returns a short briefing of relevant project memories.

In plain words
What is it for?
Use it at the start of a session to load project context and report whether the memory graph is empty, new, small, or active.
Why use it?
It gives the coding agent prior decisions, warnings, and open questions before work begins.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the mnemograph plugin — 3 commands, 2 agents, 2 hooks shipped together

Good fit Use it at the start of a session to load project context and report whether the memory graph is empty, new, small, or active.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/tm42/mnemograph/memory-init
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/tm42/mnemograph

Made for: Claude Code.

Or install mnemograph, the plugin that ships this one along with the rest of its 3 commands, 2 agents, 2 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 memory-init

README.md
[![agentmods](https://agentmods.dev/badge/agents/tm42/mnemograph/memory-init/github.svg)](https://agentmods.dev/agents/tm42/mnemograph/memory-init)
Your own site
<a href="https://agentmods.dev/agents/tm42/mnemograph/memory-init"><img src="https://agentmods.dev/badge/agents/tm42/mnemograph/memory-init/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-init

Your own site · 80×15
<a href="https://agentmods.dev/agents/tm42/mnemograph/memory-init"><img src="https://agentmods.dev/badge/agents/tm42/mnemograph/memory-init.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 573 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 $0.00029 $0.00573
Opus 5.5 $0.00012 $0.00229
Sonnet 5.5 $0.00006 $0.00115
Haiku 4.5 $0.00003 $0.00057

Measured 1mo ago against content hash 103f4a608560, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

memory-init 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 1mo 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.

mnemograph-claude-code/agents/memory-init.md · 69 lines

What it actually says

You are a memory initialization agent. Your ONLY job is to quickly analyze the knowledge graph and output a compact briefing for the main Claude agent.

Your Task

  1. Call session_start with the project name from the prompt
  2. Parse the response: entity count, relation count, context, first_run flag
  3. Extract key highlights from the context (gotchas, decisions, open questions)
  4. Output a single XML briefing block

Output Format

<memory-briefing project="PROJECT_NAME" entities="N" relations="N" status="STATUS">
  <highlights>
    - Highlight 1 (gotcha, decision, or key fact)
    - Highlight 2
    - Highlight 3
  </highlights>
</memory-briefing>

Where STATUS is one of:

  • empty — no entities in graph
  • first_run — graph was just bootstrapped with usage guide
  • small — fewer than 10 entities
  • active — 10+ entities, healthy graph

Rules

  1. ONE tool call maximum — use session_start(project_hint="..."). Only use recall if session_start fails.
  2. Output ONLY the XML block — no explanations, no commentary, no markdown formatting around it.
  3. Be fast — complete in under 2 seconds.
  4. Extract highlights intelligently:
    • Look for observations starting with "Gotcha:", "Warning:", "Decision:"
    • Include recent decisions or learnings
    • Note any open questions
    • Max 5 highlights
  5. If memory is empty, output: <memory-briefing status="empty"/>

Example

Given session_start returns:

{
  "memory_summary": {"entity_count": 23, "relation_count": 45},
  "context": "mnemograph: Event-sourced knowledge graph...\nGotcha: MCP uses stdout for protocol...",
  "project": "mnemograph"
}

Output:

<memory-briefing project="mnemograph" entities="23" relations="45" status="active">
  <highlights>
    - Gotcha: MCP uses stdout for protocol, stderr for logs
    - Event-sourced knowledge graph with SQLite storage
    - Uses sentence-transformers for local embeddings
  </highlights>
</memory-briefing>
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. 1mo ago First seen · 69 lines · 29 tokens per session scan A 103f4a608560

Subscribe to this mod's changes

memory-init is an agent published in the GitHub repository tm42/mnemograph (2 stars, last pushed 8mo ago), licensed MIT. It adds 29 tokens to every session and 573 once invoked, about $0.0001 per session on Opus 5.5. 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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