byterover

byterover is a skill for Claude Code, Codex from leecyno1/boutique-skills. It costs 57 tokens per session (919 once invoked), scanned A, original, MIT.

A persistent project-memory system for coding agents. It saves compressed observations from past sessions and makes relevant decisions and history available in later sessions.

In plain words
What is it for?
Use it to query project knowledge before coding, store implementation decisions or bug findings, search earlier sessions, and view a timeline of agent work.
Why use it?
It reduces repeated explanations and the need to rediscover project conventions or past decisions. It also lets an agent search its previous work.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to query project knowledge before coding, store implementation decisions or bug findings, search earlier sessions, and view a timeline of agent work.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/leecyno1/boutique-skills/byterover
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.

Any agent
npx skills add leecyno1/boutique-skills --skill byterover
Clone the repo
git clone --depth 1 https://github.com/leecyno1/boutique-skills

Made for: Claude Code, Codex.

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 byterover

README.md
[![agentmods](https://agentmods.dev/badge/skills/leecyno1/boutique-skills/byterover/github.svg)](https://agentmods.dev/skills/leecyno1/boutique-skills/byterover)
Your own site
<a href="https://agentmods.dev/skills/leecyno1/boutique-skills/byterover"><img src="https://agentmods.dev/badge/skills/leecyno1/boutique-skills/byterover/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 byterover

Your own site · 80×15
<a href="https://agentmods.dev/skills/leecyno1/boutique-skills/byterover"><img src="https://agentmods.dev/badge/skills/leecyno1/boutique-skills/byterover.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 919 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 $0.00057 $0.00919
Opus 5 $0.00028 $0.00460
Sonnet 5 $0.00011 $0.00184
Haiku 4.5 $0.00006 $0.00092

Measured 9d ago against content hash 285f428fe69a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

byterover 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 9d 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.

skills/default/byterover/SKILL.md · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ByteRover Context Tree

A project-level knowledge repository that persists across sessions. Use it to avoid re-discovering patterns, conventions, and decisions.

Why Use ByteRover

  • Query before working: Get existing knowledge about patterns, conventions, and past decisions before implementing
  • Curate after learning: Capture insights, decisions, and bug fixes so future sessions start informed

Quick Reference

Command When Example
brv query "question" Before starting work brv query "How is auth implemented?"
brv curate "context" -f file After completing work brv curate "JWT 24h expiry" -f auth.ts
brv status To check prerequisites brv status

When to Use

Query when you need to understand something:

  • "How does X work in this codebase?"
  • "What patterns exist for Y?"
  • "Are there conventions for Z?"

Curate when you learned or created something valuable:

  • Implemented a feature using specific patterns
  • Fixed a bug and found root cause
  • Made an architecture decision

Curate Quality

Context must be specific and actionable:

# Good - specific, explains where and why
brv curate "Auth uses JWT 24h expiry, tokens in httpOnly cookies" -f src/auth.ts

# Bad - too vague
brv curate "Fixed auth"

Note: Context argument must come before -f flags. Max 5 files.

Best Practices

  1. Break down large contexts - Run multiple brv curate commands for complex topics rather than one massive context. Smaller chunks are easier to retrieve and update.

  2. Let ByteRover read files - Don't read files yourself before curating. Use -f flags to let ByteRover read them directly:

    # Good - ByteRover reads the files
    brv curate "Auth implementation details" -f src/auth.ts -f src/middleware/jwt.ts
    
    # Wasteful - reading files twice
    # [agent reads files] then brv curate "..." -f same-files
    
  3. Be specific in queries - Queries block your workflow. Use precise questions to get faster, more relevant results:

    # Good - specific
    brv query "What validation library is used for API request schemas?"
    
    # Bad - vague, slow
    brv query "How is validation done?"
    

Read the full file on GitHub · 95 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 95 lines · 57 tokens per session scan A 285f428fe69a

Subscribe to this mod's changes

byterover is a skill published in the GitHub repository leecyno1/boutique-skills (5 stars, last pushed yesterday), licensed MIT. It adds 57 tokens to every session and 919 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 2026-09-03.

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