An operational guide for SQLite, a small database commonly embedded in applications. It covers write-ahead logging (WAL), checkpoints, file syncing, locking, full-text search, backups, and replication.

Use it to diagnose WAL and SQLITE_BUSY issues, multi-writer concurrency, network-filesystem problems, full-text search internals, backup behaviour, or replication with Litestream, LiteFS, or rqlite.

It helps investigate database locking, busy errors, corruption risks on network drives, and problems caused by multiple processes writing at once. It also supports decisions about SQLite settings and replication tools.

sqlite-wal — Skill for Claude Code by pvillega/claude-templates

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 pvillega/claude-templates --skill sqlite-wal

Clone the repo

git clone --depth 1 https://github.com/pvillega/claude-templates

Made for: Claude Code.

Or install ct, the plugin that ships this one along with the rest of its 38 skills, 7 agents, 7 hooks.

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/skills/pvillega/claude-templates/sqlite-wal/github.svg)](https://agentmods.dev/skills/pvillega/claude-templates/sqlite-wal)

Your own site

<a href="https://agentmods.dev/skills/pvillega/claude-templates/sqlite-wal"><img src="https://agentmods.dev/badge/skills/pvillega/claude-templates/sqlite-wal/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/skills/pvillega/claude-templates/sqlite-wal"><img src="https://agentmods.dev/badge/skills/pvillega/claude-templates/sqlite-wal.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 126 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 4,507 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 unknown 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	$0.00126	$0.04507
Opus 5.5	$0.00050	$0.01803
Sonnet 5.5	$0.00025	$0.00901
Haiku 4.5	$0.00013	$0.00451

Measured 2mo ago against content hash c30922991cd0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sqlite-wal 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.

plugins/ct/skills/sqlite-wal/SKILL.md · 185 lines

The source is not reproduced here

No licence file

Read it on GitHub

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 · 185 lines · 126 tokens per session scan A c30922991cd0

Subscribe to this mod's changes

sqlite-wal is a skill published in the GitHub repository pvillega/claude-templates (23 stars, last pushed 3mo ago), with no licence file. It adds 126 tokens to every session and 4,507 once invoked, about $0.0005 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.

Databases

sqlite-wal next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
sqlite-walpvillega/claude-templates	Skill	23	3mo ago	none	A	126	Claude Code
create-prprisma/orm	Skill	48k	today	Apache-2.0	A	48	Claude Code, Codex
schema-explorationlangchain-ai/deepagents	Skill	31k	today	MIT	A	57	Claude Code, Codex
atlas-mssqlariga/atlas	Skill	8.8k	4d ago	Apache-2.0	A	163	Claude Code
ha-data-storesshiwenwen/hope-agent	Skill	1.9k	today	MIT	A	115	Claude Code, Codex
nornicdb-cypher-queriesorneryd/NornicDB	Skill	924	today	MIT	A	79	Claude Code, Codex
volcengine-rds-postgresqlbytedance/agentkit-samples	Skill	484	3d ago	Apache-2.0	A	63	Claude Code, Codex