echovault: Instructions file for Codex

AGENTS.md

echovault AGENTS.md is an instructions file for Codex, OpenCode from mraza007/echovault. It costs 411 tokens per session, scanned A, original, MIT.

A set of instructions for using a command-line memory system that stores and retrieves project decisions, bugs, patterns, and other context.

In plain words
What is it for?
Checking project memory at session start, searching earlier notes, and saving decisions, fixes, discoveries, and related files.
Why use it?
It reduces the need to rediscover important project information after a session ends or when work resumes later.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Codex.

This is mraza007/echovault's own configuration. It tells Codex and OpenCode how to work on echovault itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything echovault configures →

Reuse

Borrowing it

Nothing to install: this file belongs to mraza007/echovault. 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/mraza007/echovault/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/mraza007/echovault

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.

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README.md
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Your own site
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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.

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Your own site · 80×15
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Per session 411 This file is loaded in full into every session.
When invoked 411 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00411 $0.00411
Opus 5.5 $0.00164 $0.00164
Sonnet 5.5 $0.00082 $0.00082
Haiku 4.5 $0.00041 $0.00041

Measured 2mo ago against content hash f77aa62a7734, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

echovault 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 2mo 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 · 65 lines

What it actually says

Local Memory

You have access to a persistent memory system via the memory CLI. Use it to save important decisions, patterns, bugs, context, and learnings — and retrieve them in future sessions.

At Session Start

Check available memories for this project:

memory context --project

Then use memory search <query> to retrieve full details on any relevant memory.

Saving Memories

When you make a decision, fix a bug, discover a pattern, set up infrastructure, or learn something non-obvious:

memory save \
  --title "Short descriptive title" \
  --what "What happened or was decided" \
  --why "Reasoning behind it" \
  --impact "What changed as a result" \
  --tags "tag1,tag2,tag3" \
  --category "decision" \
  --related-files "src/auth.ts,src/middleware.ts" \
  --source "codex" \
  --details "Context:

             Options considered:
             - Option A
             - Option B

             Decision:
             Tradeoffs:
             Follow-up:"

Categories: decision, pattern, bug, context, learning

Searching Memories

memory search "your query"                 # search all projects
memory search "your query" --project       # current project only
memory search "your query" --source codex  # from specific agent

Getting Full Details

When search results show "Details: available":

memory details <memory-id>

Rules

  • Always capture thorough details — never omit reasoning or context
  • Never include API keys, secrets, or credentials in any field
  • Wrap sensitive values in <redacted> tags if referencing them
  • Search before deciding — check if a decision was already made
  • Save after doing — capture decisions, fixes, and learnings as you go
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. 2mo ago First seen · 65 lines · 411 tokens per session scan A f77aa62a7734

Subscribe to this mod's changes

echovault AGENTS.md is an instructions file published in the GitHub repository mraza007/echovault (150 stars, last pushed 3mo ago), licensed MIT. It adds 411 tokens to every session, about $0.0016 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.

Related

echovault AGENTS.md compared with instructions from other repositories

echovault AGENTS.md next to 6 instructions from other repositories
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