optimize

A command that reviews a file or directory for possible performance problems. It examines algorithms, input and output work, memory use, frontend rendering, and only then small optimizations.

In plain words
What is it for?
Use it to inspect a file or directory, or the changes on the current branch, and receive suggestions with locations, before-and-after examples, impact levels, and reasons. It can apply high-impact suggestions when requested with the apply option.
Why use it?
It gives a structured way to find work that makes software slow, such as repeated calculations, unnecessary database requests, memory growth, or excessive browser updates.

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/wesammustafa/opencode-primer/optimize
Clone the repo
git clone --depth 1 https://github.com/wesammustafa/opencode-primer
Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 303 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 $0.00010 $0.00303
Opus 5 $0.00005 $0.00151
Sonnet 5 $0.00002 $0.00061
Haiku 4.5 $0.00001 $0.00030

Measured yesterday against content hash 208e2abf8646, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

optimize 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 yesterday.

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.

.opencode/commands/optimize.md · 31 lines

What it actually says

Analyze the target for performance issues: $ARGUMENTS (or the current branch's changes if empty).

Cover these dimensions in this order:

  1. Algorithmic — wrong data structure, O(n²) where O(n) is possible, repeated work.
  2. I/O — N+1 queries, missing indexes, sync calls on hot paths, unbatched network requests.
  3. Memory — unbounded growth, leaks, large in-memory snapshots that could stream.
  4. Frontend (if applicable) — re-render cascades, large bundles, unmemoized expensive renders, blocking main-thread work.
  5. Micro-optimizations — only if (1)–(4) are clean and the call site is genuinely hot.

For each suggestion, output:

[Impact] <summary>
  Where:  <file:line>
  Before: <snippet>
  After:  <snippet>
  Why:    <one sentence — what's faster and roughly by how much>

Impact tiers: High (>10× or removes the bottleneck) · Medium (2–10×) · Low (small constant factor).

Don't make the changes yet. End by asking which suggestions to apply.

Optional flag — pass --apply in arguments to skip the discussion and implement the High-impact suggestions directly.

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. yesterday First seen · 31 lines · 10 tokens per session scan A 208e2abf8646

Subscribe to this mod's changes

optimize is a command published in the GitHub repository wesammustafa/opencode-primer (384 stars, last pushed 1mo ago), licensed MIT. It adds 10 tokens to every session and 303 once invoked, about $0.0001 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 2026-08-30.