Borrowing it
Nothing to install: this file belongs to jnarowski/agentcmd. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/jnarowski/agentcmd/main/.claude/commands/cmd/add-spec.mdgit clone --depth 1 https://github.com/jnarowski/agentcmdWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/commands/jnarowski/agentcmd/add-spec)<a href="https://agentmods.dev/commands/jnarowski/agentcmd/add-spec"><img src="https://agentmods.dev/badge/commands/jnarowski/agentcmd/add-spec/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/commands/jnarowski/agentcmd/add-spec"><img src="https://agentmods.dev/badge/commands/jnarowski/agentcmd/add-spec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00008 | $0.01925 |
| Opus 5.5 | $0.00003 | $0.00770 |
| Sonnet 5.5 | $0.00002 | $0.00385 |
| Haiku 4.5 | $0.00001 | $0.00193 |
Grade A, and why
add-spec 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Add Spec to Existing Folder
Adds an implementation spec (feature/bug/issue) to an existing spec folder that contains a PRD. Routes to the appropriate generate command with context.
Variables
- $param1: $1 (required) - 10-digit spec ID of existing folder (e.g.,
2511131522)
Instructions
- IMPORTANT: This is a ROUTER command - it does NOT generate specs itself
- IMPORTANT: Read the appropriate generate command instructions and follow them exactly
- This command adds a spec to a folder that already has a PRD (or empty folder)
- Auto-detects spec type from conversation context (feature/bug/issue)
- References existing PRD content if available for better accuracy
- Routes to:
generate-feature-spec,generate-bug-spec, orgenerate-issue-spec
Workflow
-
Validate Spec ID:
- Verify $param1 is a 10-digit number matching format
YYMMDDHHmm - If invalid format: Show error and exit
- Example valid:
2511131522 - Example invalid:
123(too short),abc(not numeric)
- Verify $param1 is a 10-digit number matching format
-
Read Index and Verify Folder:
- Read
.agent/specs/index.json - Look up entry with key matching $param1
- If not found: Show error listing available spec IDs and exit
- Extract folder path from entry
- Verify folder exists at
.agent/specs/{folder} - If folder doesn't exist: Show error and exit
- Read
-
Check for Existing Spec:
- Check if entry has
pathfield in index.json - If
pathfield exists and points tospec.md: Show error "Spec already exists at {path}" and exit - This prevents overwriting existing specs
- Check if entry has
-
Read Existing PRD (if present):
- Check if
prd.mdexists in folder - If exists: Read
prd.mdcontent to use as additional context - If not: Continue without PRD context
- Check if
-
Detect Spec Type:
- Analyze conversation history and PRD content (if available)
- Determine if this is a:
- feature: New functionality, enhancement, or major change
- bug: Fixing broken behavior, errors, or unexpected results
- issue: Small task, minor fix, or simple change
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.
- 2mo ago First seen · 208 lines · 8 tokens per session scan A 4f595e490482
add-spec is a command published in the GitHub repository jnarowski/agentcmd (18 stars, last pushed 10mo ago), licensed MIT. It adds 8 tokens to every session and 1,925 once invoked, about $0.0000 per session on Opus 5.5. 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 2026-09-01.
add-spec compared with commands from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| add-specjnarowski/agentcmd | Command | 18 | 10mo ago | MIT | A | 8 | Claude Code |
| checklistgithub/spec-kit | Command | 148k | yesterday | MIT | A | 13 | Claude Code |
| clarifygithub/spec-kit | Command | 148k | yesterday | MIT | A | 27 | Claude Code |
| specifygithub/spec-kit | Command | 148k | yesterday | MIT | A | 13 | Claude Code |
| analyzegithub/spec-kit | Command | 148k | yesterday | MIT | A | 26 | Claude Code |
| convergegithub/spec-kit | Command | 148k | yesterday | MIT | A | 35 | Claude Code |
| implementgithub/spec-kit | Command | 148k | yesterday | MIT | A | 14 | Claude Code |