lavra-work-single

lavra-work-single is a skill for Claude Code from roberto-mello/lavra. It costs 37 tokens per session (5,512 once invoked), scanned B, original, MIT.

A workflow for implementing exactly one bead, the project's term for a small unit of work, in the lavra-work system. It moves through implementation, review, fixes, learning, and completion.

In plain words
What is it for?
Use it when working on one lavra-work bead, with optional review behavior and support for decisions inherited from a larger epic, or multi-step task.
Why use it?
It provides a defined path for checking the task, reviewing the result, correcting problems, and recording what was learned.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions subagents.

Part of the lavra plugin — 23 skills, 18 commands, 1 hook, 1 MCP server shipped together

Good fit Use it when working on one lavra-work bead, with optional review behavior and support for decisions inherited from a larger epic, or multi-step task.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/roberto-mello/lavra/lavra-work-single
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 roberto-mello/lavra --skill lavra-work-single
Clone the repo
git clone --depth 1 https://github.com/roberto-mello/lavra

Made for: Claude Code.

Or install lavra, the plugin that ships this one along with the rest of its 23 skills, 18 commands, 1 hook, 1 MCP server.

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 lavra-work-single

README.md
[![agentmods](https://agentmods.dev/badge/skills/roberto-mello/lavra/lavra-work-single/github.svg)](https://agentmods.dev/skills/roberto-mello/lavra/lavra-work-single)
Your own site
<a href="https://agentmods.dev/skills/roberto-mello/lavra/lavra-work-single"><img src="https://agentmods.dev/badge/skills/roberto-mello/lavra/lavra-work-single/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 lavra-work-single

Your own site · 80×15
<a href="https://agentmods.dev/skills/roberto-mello/lavra/lavra-work-single"><img src="https://agentmods.dev/badge/skills/roberto-mello/lavra/lavra-work-single.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,512 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00037 $0.05512
Opus 5 $0.00018 $0.02756
Sonnet 5 $0.00007 $0.01102
Haiku 4.5 $0.00004 $0.00551

Measured 9d ago against content hash f6a3c5409d9d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade B, and why

lavra-work-single scanned grade B with 1 finding 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.

Enumerates other installed skillsmediumAgent snooping

Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.

ls .claude/skills/ 2>/dev/null
plugins/lavra/skills/lavra-work-single/SKILL.md · 555 lines

How it starts

The opening of the file, as written. The whole thing — 555 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SINGLE-BEAD PATH

Used when exactly one bead is being worked on. Full-quality interactive flow with built-in review, fix loop, and learn phases.

State machine: IMPLEMENTING -> REVIEWING -> FIXING -> RE_REVIEWING -> LEARNING -> DONE

Flags:

  • --skip-review: skip the /lavra-review subagent call in Phase 3 step 3. Self-review (step 2) still runs. Used by the sequential epic loop, which runs a single review pass after all beads complete.
  • EPIC_PLAN={...}: epic locked decisions injected by the sequential loop. Treat identically to a parent epic read in Phase 1 step 1.

<project_root>

All .lavra/ paths are relative to the project root. PROJECT_ROOT may be injected into your context — use it if set. If not, resolve it once and reuse:

PROJECT_ROOT="${PROJECT_ROOT:-$(git rev-parse --show-toplevel 2>/dev/null || echo "$PWD")}"

Then prefix all .lavra/ paths with "$PROJECT_ROOT/" when invoking them via Bash.

</project_root>

Phase 1: Quick Start

  1. Read Bead and Clarify

    If a bead ID was provided:

    bd show {BEAD_ID} --long
    

    Read the bead description completely including:

    • What section (implementation requirements)
    • Context section (research findings, constraints)
    • Decisions section (Locked = must honor, Discretion = agent's flexibility budget, Deferred = do NOT implement)
    • Testing section (test cases to implement)
    • Validation section (acceptance criteria)
    • Dependencies section (blockers)
    • Comments (INVESTIGATION/FACT/PATTERN/DECISION/LEARNED from research phase -- treat as implementation constraints with the same weight as Locked Decisions)

    If the bead has a parent epic, also read the epic's decision sections:

    bd show {BEAD_ID} --json | jq -r '.[0].parent // empty'
    # If parent exists:
    bd show {PARENT_EPIC_ID}
    

    Extract ## Locked Decisions, ## Agent Discretion, and ## Deferred sections. Locked = must honor. Discretion = deviation budget. Deferred = do NOT implement (these are explicitly out of scope).

Read the full file on GitHub · 555 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.

  1. 9d ago First seen · 555 lines · 37 tokens per session scan B f6a3c5409d9d

Subscribe to this mod's changes

lavra-work-single is a skill published in the GitHub repository roberto-mello/lavra (51 stars, last pushed 2mo ago), licensed MIT. It adds 37 tokens to every session and 5,512 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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