pref-delete

A command that removes one user preference by its key.

In plain words
What is it for?
Use it to delete settings such as a code-style preference, then run the sync command.
Why use it?
It clears an outdated or unwanted preference and tells you to regenerate agent rules so the change takes effect there.

Command

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 commands/proticom/gnosys/pref-delete
Clone the repo
git clone --depth 1 https://github.com/proticom/gnosys
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 310 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 $0.00000 $0.00310
Opus 5 $0.00000 $0.00155
Sonnet 5 $0.00000 $0.00062
Haiku 4.5 $0.00000 $0.00031

Measured 2d ago against content hash 8ad62cf5d44d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

pref-delete 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.

docs/commands/pref-delete.md · 64 lines

What it actually says

gnosys pref delete

Delete a user-scoped preference by key.

Usage

gnosys pref delete <key>
gnosys pref delete code-style

Behavior

  1. Opens the central DB via GnosysDB.openCentral().
  2. Calls deletePreference(centralDb, key).
  3. Prints confirmation or a missing-key message.
  4. Reminds you to run gnosys sync to update agent rules files after a successful delete.

Output

Success:

Preference "code-style" deleted.
Run 'gnosys sync' to update agent rules files.

Missing key:

No preference found for key "unknown-key".

Errors

Central DB unavailable:

Central DB not available (better-sqlite3 missing).

Other errors:

Error: <message>

Failure paths set process.exitCode = 1 and return through finally.

Validation

cd gnosys-public
npm run cli -- pref delete --help
node scripts/audit-commands.mjs --write
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 · 64 lines · 0 tokens per session scan A 8ad62cf5d44d

Subscribe to this mod's changes

pref-delete is a command published in the GitHub repository proticom/gnosys (4 stars, last pushed 16d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 310 tokens. 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.