task

A command for carrying out one numbered task from a specification file. A specification file is a written plan that describes what to build, its constraints, and how to check it.

In plain words
What is it for?
Use it to read a task, implement only its requested changes, run its verification step, and report the files changed, result, and blockers.
Why use it?
It keeps an implementation focused on the selected task and prevents unrelated refactoring or additions. It also provides a consistent completion report.

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/owainlewis/youtube-tutorials/task
Clone the repo
git clone --depth 1 https://github.com/owainlewis/youtube-tutorials
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 191 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 $0.00191
Opus 5 $0.00000 $0.00096
Sonnet 5 $0.00000 $0.00038
Haiku 4.5 $0.00000 $0.00019

Measured 2d ago against content hash de1c73fa1184, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

task 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.

tutorials/spec-driven-development/resources/commands/task.md · 37 lines

What it actually says

Task

Execute a single task from a spec file.

Input

$ARGUMENTS: path/to/spec.md TN

Process

  1. Read the spec file
  2. Find the specified task
  3. Review Why, What, Constraints, and Current State for context
  4. Implement exactly what the task describes — nothing more
  5. Run the Verify step

Rules

  • Only this task — ignore others in the spec
  • Only files listed in the task
  • No drive-by refactors or additions
  • Follow constraints strictly
  • Write tests if specified
  • Do NOT add dependencies unless specified in Constraints

After Completion

Report:

  • What was implemented
  • Files created or modified
  • Verification result (pass/fail)
  • Any issues or blockers

Suggest next step:

  • If more tasks remain: Read spec and implement TN+1
  • If all tasks complete: Run Validation section commands
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 · 37 lines · 0 tokens per session scan A de1c73fa1184

Subscribe to this mod's changes

task is a command published in the GitHub repository owainlewis/youtube-tutorials (365 stars, last pushed 10d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 191 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 2026-08-30.