What is pi-hermes-memory AGENTS.md?

A project guide for a Pi coding-agent extension that gives the agent memory preserved between sessions and a background learning process.

Adding or maintaining persistent memory, session-end saving, learning features, memory tools, and checks for malicious instructions or data leaks.

It explains the extension's TypeScript structure, storage files, event handling, and safeguards so contributors know where memory behavior belongs.

How chandra447/pi-hermes-memory configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to chandra447/pi-hermes-memory. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/chandra447/pi-hermes-memory/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/chandra447/pi-hermes-memory

Made for: Codex, OpenCode.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/chandra447/pi-hermes-memory/agents-md/github.svg)](https://agentmods.dev/instructions/chandra447/pi-hermes-memory/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/chandra447/pi-hermes-memory/agents-md"><img src="https://agentmods.dev/badge/instructions/chandra447/pi-hermes-memory/agents-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/chandra447/pi-hermes-memory/agents-md"><img src="https://agentmods.dev/badge/instructions/chandra447/pi-hermes-memory/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,014 This file is loaded in full into every session.

When invoked 1,014 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.01014	$0.01014
Opus 5.5	$0.00406	$0.00406
Sonnet 5.5	$0.00203	$0.00203
Haiku 4.5	$0.00101	$0.00101

Measured 21d ago against content hash aae44eed3e06, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pi-hermes-memory AGENTS.md 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 21d 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.

AGENTS.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pi Hermes Memory Extension

Project Overview

This is a Pi coding agent extension that brings Hermes-style persistent memory and a learning loop to any Pi user. After pi install, users get persistent memory across sessions, a background learning loop, and session-end flush.

v0.1 is complete (119 tests, v0.1.0 tagged). Current work is v0.2: Skills + Smart Curation — see docs/0.2/TASKS.md.

Architecture

Language: TypeScript (loaded via jiti, no compilation needed at runtime)
Runtime: Pi extension API (@earendil-works/pi-coding-agent)
Storage: Two markdown files (MEMORY.md, USER.md) in ~/.pi/agent/memory/
Entry point: src/index.ts — registers tools, event handlers, and commands

Key Files

File	Purpose
`src/index.ts`	Extension entry point — wires all components together
`src/types.ts`	Shared TypeScript interfaces + `getMessageText()` helper
`src/constants.ts`	Prompts, defaults, delimiter
`src/store/memory-store.ts`	Core `MemoryStore` class — CRUD, persistence, frozen snapshot
`src/store/content-scanner.ts`	`scanContent()` — injection/exfiltration detection
`src/tools/memory-tool.ts`	`registerMemoryTool()` — LLM tool definition
`src/handlers/background-review.ts`	`setupBackgroundReview()` — learning loop via `pi.exec`
`src/handlers/session-flush.ts`	`setupSessionFlush()` — pre-compaction/shutdown flush
`src/handlers/insights.ts`	`registerInsightsCommand()` — `/memory-insights` command
`PLAN.md`	Full v0.1 implementation plan with Hermes source file reference map
`docs/ROADMAP.md`	Full roadmap with Hermes competitive analysis + gap analysis
`docs/0.2/TASKS.md`	v0.2 task breakdown — Skills + Smart Curation
`.github/workflows/publish.yml`	Release gate → npm publish (OIDC trusted publishing) → GitHub Release
`.github/workflows/release.yml`	One-dispatch release: bump, promote changelog, tag, publish

Design Decisions

Read the full file on GitHub · 84 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.

21d ago Changed · +6 lines · +144 tokens per session aae44eed3e06
2mo ago First seen · 78 lines · 870 tokens per session scan A 40bb562bec5f

Subscribe to this mod's changes

pi-hermes-memory AGENTS.md is an instructions file published in the GitHub repository chandra447/pi-hermes-memory (514 stars, last pushed 4d ago), licensed MIT. It adds 1,014 tokens to every session, about $0.0041 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 2026-08-30.

Building agents Memory and context context-engineering harness harness-engineering pi

pi-hermes-memory AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
pi-hermes-memory AGENTS.mdchandra447/pi-hermes-memory	Instructions file	514	4d ago	MIT	A	1,014	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

pi-hermes-memory: Instructions file for Codex