validate-impl

A command that checks completed implementation work against its requirements, design, and task list. It can automatically find the relevant feature and completed tasks or accept them as arguments.

In plain words
What is it for?
Use it to validate all completed tasks for a feature, or to check selected task numbers against the specification files.
Why use it?
It reveals whether the code matches the agreed specification instead of relying only on task checkmarks.

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/gotalab/cc-sdd/validate-impl
Clone the repo
git clone --depth 1 https://github.com/gotalab/cc-sdd
Per session 9 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 462 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 $0.00009 $0.00462
Opus 5 $0.00005 $0.00231
Sonnet 5 $0.00002 $0.00092
Haiku 4.5 $0.00001 $0.00046

Measured 2d ago against content hash 6df4e0ebcd9d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

validate-impl 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

tools/cc-sdd/templates/agents/claude-code-agent/commands/validate-impl.md · 69 lines

What it actually says

Implementation Validation

Parse Arguments

  • Feature name: $1 (optional)
  • Task numbers: $2 (optional)

Auto-Detection Logic

Perform detection before invoking Subagent:

If no arguments ($1 empty):

  • Parse conversation history for /kiro:spec-impl <feature> [tasks] patterns
  • OR scan {{KIRO_DIR}}/specs/*/tasks.md for [x] checkboxes
  • Pass detected features and tasks to Subagent

If feature only ($1 present, $2 empty):

  • Read {{KIRO_DIR}}/specs/$1/tasks.md and find all [x] checkboxes
  • Pass feature and detected tasks to Subagent

If both provided ($1 and $2 present):

  • Pass directly to Subagent without detection

Invoke Subagent

Delegate validation to validate-impl-agent:

Use the Task tool to invoke the Subagent with file path patterns:

Task(
  subagent_type="validate-impl-agent",
  description="Validate implementation",
  prompt="""
Feature: {$1 or auto-detected}
Target tasks: {$2 or auto-detected}
Mode: {auto-detect, feature-all, or explicit}

File patterns to read:
- {{KIRO_DIR}}/specs/{feature}/*.{json,md}
- {{KIRO_DIR}}/steering/*.md

Validation scope: {based on detection results}
"""
)

Display Result

Show Subagent summary to user, then provide next step guidance:

Next Steps Guidance

If GO Decision:

  • Implementation validated and ready
  • Proceed to deployment or next feature

If NO-GO Decision:

  • Address critical issues listed
  • Re-run /kiro:spec-impl <feature> [tasks] for fixes
  • Re-validate with /kiro:validate-impl [feature] [tasks]

Note: Validation is recommended after implementation to ensure spec alignment and quality.

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 · 69 lines · 0 tokens per session scan A 6df4e0ebcd9d

Subscribe to this mod's changes

validate-impl is a command published in the GitHub repository gotalab/cc-sdd (3,646 stars, last pushed 3mo ago), licensed MIT. It adds 9 tokens to every session and 462 once invoked, about $0.0000 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.