Borrowing it
Nothing to install: this file belongs to nylas/cli. 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/nylas/cli/main/.claude/commands/add-command.mdgit clone --depth 1 https://github.com/nylas/cliWrote 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/nylas/cli/add-command)<a href="https://agentmods.dev/commands/nylas/cli/add-command"><img src="https://agentmods.dev/badge/commands/nylas/cli/add-command/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/nylas/cli/add-command"><img src="https://agentmods.dev/badge/commands/nylas/cli/add-command.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 | $0.00028 | $0.00804 |
| Opus 5.5 | $0.00011 | $0.00322 |
| Sonnet 5.5 | $0.00006 | $0.00161 |
| Haiku 4.5 | $0.00003 | $0.00080 |
Grade A, and why
add-command 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 1mo 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 — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Add CLI Component
Add commands, flags, API methods, or domain types following nylas CLI patterns.
API Reference: https://developer.nylas.com/docs/api/v3/
Scope
| Task | What to do |
|---|---|
| New command | Full workflow below (domain → port → adapter → CLI → register) |
| New flag | Add var + cmd.Flags().TypeVar() + test + doc update |
| New API method | Steps 1-2 only (domain + adapter), skip CLI layer |
| New domain type | Step 1 only, see references/domain-patterns.md |
Quick Start
- Ask for: component type (command/flag/method/type), name, operations needed
- Follow patterns in
references/directory - Run
make cito verify
Reference Files
| File | When to Read |
|---|---|
references/domain-patterns.md |
Creating new domain types |
references/adapter-patterns.md |
Implementing API methods |
references/cli-patterns.md |
Building CLI commands |
Read reference files ONLY when working on that specific layer.
Steps
1. Domain Layer (if new types needed)
- Create
internal/domain/{resource}.go - Add tests to
internal/domain/domain_test_basic.go
2. Adapter Layer (if new API methods needed)
- Update
internal/ports/nylas.gowith interface methods - Create
internal/adapters/nylas/{resource}.go - Update
internal/adapters/nylas/mock_{resource}.go
3. CLI Layer
- Create
internal/cli/{resource}/directory - Add:
{resource}.go,list.go,show.go,create.go,helpers.go - Add tests:
{resource}_test.go
4. Registration
- Update
cmd/nylas/main.goto add the command
5. Verify
make ci
Common Patterns
- Context: 30s timeout for API calls
- Format flag:
--formatwith table, json, yaml - Spinner: Use pterm spinner for long operations
- Errors: Wrap with
fmt.Errorf("context: %w", err)
For Full CRUD Commands
When creating a complete resource with list, show, create, update, delete:
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.
- 1mo ago First seen · 119 lines · 28 tokens per session scan A feb5f79441e7
add-command is a command published in the GitHub repository nylas/cli (76 stars, last pushed 12d ago), licensed MIT. It adds 28 tokens to every session and 804 once invoked, about $0.0001 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 2026-08-30.
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