What is echovault AGENTS.md?

Repository instructions for EchoVault, a local memory system that stores coding-agent decisions, bugs, patterns, and context in a searchable database.

Building EchoVault, running its tests and linters, managing dependencies, and preparing platform-specific builds.

They keep builds, tests, and code checks consistent by requiring the project’s Makefile commands and documenting the project’s workflow.

How go-ports/echovault configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to go-ports/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/go-ports/echovault/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/go-ports/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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/go-ports/echovault/agents-md/github.svg)](https://agentmods.dev/instructions/go-ports/echovault/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/go-ports/echovault/agents-md"><img src="https://agentmods.dev/badge/instructions/go-ports/echovault/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/go-ports/echovault/agents-md"><img src="https://agentmods.dev/badge/instructions/go-ports/echovault/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 4,651 This file is loaded in full into every session.

When invoked 4,651 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	$0.04651	$0.04651
Opus 5.5	$0.01860	$0.01860
Sonnet 5.5	$0.00930	$0.00930
Haiku 4.5	$0.00465	$0.00465

Measured 2mo ago against content hash 94975ab844ff, 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 · 590 lines

How it starts

The opening of the file, as written. The whole thing — 590 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This file provides guidance to AI coding agents when working with code in this repository.

Project Overview

EchoVault is a local memory system for coding agents. It persists decisions, bugs, patterns, and context across sessions in a SQLite database (with FTS5 full-text search and sqlite-vec vector embeddings) and exposes them through a CLI binary (memory) and an MCP (Model Context Protocol) stdio server.

Build & Development Commands

All builds, tests, and linting MUST be run through the Makefile. Do NOT run go build, go test, golangci-lint, or other tools directly — always use the corresponding make target.

# Build for current platform (optimised)
make build

# Build without cross-compile flags (fastest local build)
make build-native

# Run all tests (CGO_CFLAGS set automatically for FTS5)
make test

# Run a single test (exception: no make target, use go test directly)
CGO_CFLAGS="-DSQLITE_ENABLE_FTS5" go test -run TestName ./path/to/package

# Run all linters (nolintguard, qtlint, golangci-lint) — must pass before commit
make lint

# Run linters with auto-fix
make lint-fix

# Install/tidy dependencies
make deps

# Clean build artifacts
make clean

# See all available targets
make help

CGO Requirements

This project requires CGO throughout — CGO_ENABLED=1 is always set by the Makefile. Two C-backed SQLite extensions are in use:

github.com/mattn/go-sqlite3 — SQLite driver compiled via CGO
github.com/asg017/sqlite-vec-go-bindings — vector similarity search extension via CGO

When running tests directly (not via make test), always set:

CGO_CFLAGS="-DSQLITE_ENABLE_FTS5" go test ./...

Omitting CGO_CFLAGS="-DSQLITE_ENABLE_FTS5" causes "no such module: fts5" errors at runtime.

Code Style (golangci-lint)

The following rules are enforced by .golangci.yml. Code MUST comply to pass CI.

Import Organization (gci formatter)

Imports must be organized in three groups, separated by blank lines:

Standard library
Third-party packages
Local packages (github.com/go-ports/echovault/...)

Read the full file on GitHub · 590 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.

2mo ago First seen · 590 lines · 4,651 tokens per session scan A 94975ab844ff

Subscribe to this mod's changes

echovault AGENTS.md is an instructions file published in the GitHub repository go-ports/echovault (4 stars, last pushed 4d ago), licensed MIT. It adds 4,651 tokens to every session, about $0.0186 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.

Memory and context

echovault AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
echovault AGENTS.mdgo-ports/echovault	Instructions file	4	4d ago	MIT	A	4,651	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	yesterday	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

echovault: Instructions file for Codex