validate-gap

A command that compares a feature’s requirements with the existing codebase to find what is still missing. It checks the feature’s specification files before asking a helper agent to perform the analysis.

In plain words
What is it for?
Use it after writing requirements for a feature to identify missing code, affected project areas, possible implementation approaches, and research needed for design.
Why use it?
It helps reveal unfinished work and integration problems before technical design begins, especially in an existing codebase.

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-gap
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 333 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 $0.00333
Opus 5 $0.00005 $0.00167
Sonnet 5 $0.00002 $0.00067
Haiku 4.5 $0.00001 $0.00033

Measured 3d ago against content hash 3d54c2bf952f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

validate-gap 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 3d 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-gap.md · 53 lines

What it actually says

Implementation Gap Validation

Parse Arguments

  • Feature name: $1

Validate

Check that requirements have been completed:

  • Verify {{KIRO_DIR}}/specs/$1/ exists
  • Verify {{KIRO_DIR}}/specs/$1/requirements.md exists

If validation fails, inform user to complete requirements phase first.

Invoke Subagent

Delegate gap analysis to validate-gap-agent:

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

Task(
  subagent_type="validate-gap-agent",
  description="Analyze implementation gap",
  prompt="""
Feature: $1
Spec directory: {{KIRO_DIR}}/specs/$1/

File patterns to read:
- {{KIRO_DIR}}/specs/$1/spec.json
- {{KIRO_DIR}}/specs/$1/requirements.md
- {{KIRO_DIR}}/steering/*.md
- {{KIRO_DIR}}/settings/rules/gap-analysis.md
"""
)

Display Result

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

Next Phase: Design Generation

If Gap Analysis Complete:

  • Review gap analysis insights
  • Run /kiro:spec-design $1 to create technical design document
  • Or /kiro:spec-design $1 -y to auto-approve requirements and proceed directly

Note: Gap analysis is optional but recommended for brownfield projects to inform design decisions.

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. 3d ago First seen · 53 lines · 9 tokens per session scan A 3d54c2bf952f

Subscribe to this mod's changes

validate-gap 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 333 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.