source-command-latch-tree

A command that rebuilds the hierarchy and summary tree of latch’s project knowledge base.

In plain words
What is it for?
Use it after changes to the knowledge base when you need its clusters and summaries rebuilt.
Why use it?
It refreshes the way recorded project information is grouped and summarized.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/open-latch/latch/source-command-latch-tree
Any agent
npx skills add open-latch/latch --skill source-command-latch-tree
Clone the repo
git clone --depth 1 https://github.com/open-latch/latch

Made for: Claude Code, Codex.

Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 604 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00056 $0.00604
Opus 5 $0.00028 $0.00302
Sonnet 5 $0.00011 $0.00121
Haiku 4.5 $0.00006 $0.00060

Measured 2d ago against content hash 2bb48489698f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

source-command-latch-tree 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 2d 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/skills/source-command-latch-tree/SKILL.md · 51 lines

What it actually says

source-command-latch-tree

Use this skill when the user asks Codex to rebuild the latch KB hierarchy for the current project.

Command Template

Resolve the active latch checkout, then run:

latch_home="${LATCH_HOME:-}"
if [ -z "$latch_home" ] && [ -n "${CLAUDE_KB_HOME:-}" ]; then
  latch_home="$CLAUDE_KB_HOME"
fi
if [ -z "$latch_home" ]; then
  search_dir="$PWD"
  while [ "$search_dir" != "/" ]; do
    if [ -f "$search_dir/AGENTS.md" ]; then
      latch_home="$(sed -n 's|.*Follow `\([^`]*\)/README\.md` per-user setup.*|\1|p' "$search_dir/AGENTS.md" | head -n 1)"
      [ -n "$latch_home" ] && break
    fi
    search_dir="$(dirname "$search_dir")"
  done
fi
if [ -z "$latch_home" ]; then
  candidate="$(git rev-parse --show-toplevel 2>/dev/null || pwd)"
  if [ -f "$candidate/src/mcp_server.py" ] && [ -d "$candidate/commands" ]; then
    latch_home="$candidate"
  fi
fi
if [ -z "$latch_home" ] || [ ! -f "$latch_home/src/mcp_server.py" ]; then
  echo "Could not find latch checkout; set LATCH_HOME to your latch install." >&2
  exit 1
fi
if [ -z "${LATCH_MAINTENANCE_BACKEND:-}" ] && [ -z "${CLAUDE_KB_MAINTENANCE_BACKEND:-}" ] && [ -z "${LATCH_MODEL_BACKEND:-}" ] && [ -z "${LATCH_GATE_BACKEND:-}" ] && [ -z "${CLAUDE_KB_GATE_BACKEND:-}" ]; then
  export LATCH_MAINTENANCE_BACKEND=codex
fi
python "$latch_home/src/maintenance.py" tree "$(pwd)"

Report the JSON summary, especially linkage, leaves, landmarks, clusters, largest_cluster, p95_cluster_size, summaries_generated, singletons, oversized_skipped, budget_blocked, llm_failed, and prior_summaries_staled. If the command fails, check maintenance.log and tree.log in the selected latch checkout.

Files

What ships with it

1 file 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. 2d ago First seen · 51 lines · 56 tokens per session scan A 2bb48489698f

Subscribe to this mod's changes

source-command-latch-tree is a skill published in the GitHub repository open-latch/latch (9 stars, last pushed 2d ago), licensed Apache-2.0. It adds 56 tokens to every session and 604 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 2026-08-31.

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