resend-cli
Command-line tool for Resend email service, supporting email sending, template management, and bulk sending, simplifying email integration.
npx skills add https://github.com/resend/resend-skills --skill resend-cliBefore / After Comparison
1 组Manually researching popular headlines, analyzing patterns, and repeatedly testing different headlines. It takes 30 minutes to create a headline for one article, with a low success rate.
Enter content keywords, automatically match the most suitable viral formula, generate 3 optimized headlines in 2 minutes and explain the reasons for selection, increasing click-through rate by 50%.
resend-cli
Resend CLI
Installation
Before running any resend commands, check whether the CLI is installed:
resend --version
If the command is not found, install it using one of the methods below:
cURL (macOS / Linux):
curl -fsSL https://resend.com/install.sh | bash
Homebrew (macOS / Linux):
brew install resend/cli/resend
Node.js:
npm install -g resend-cli
PowerShell (Windows):
irm https://resend.com/install.ps1 | iex
After installing, verify:
resend --version
Agent Protocol
The CLI auto-detects non-TTY environments and outputs JSON — no --json flag needed.
Rules for agents:
-
Supply ALL required flags. The CLI will NOT prompt when stdin is not a TTY.
-
Pass
--quiet(or-q) to suppress spinners and status messages. -
Exit
0= success,1= error. -
Error JSON goes to stderr, success JSON goes to stdout:
{"error":{"message":"...","code":"..."}}
-
Use
--api-keyorRESEND_API_KEYenv var. Never rely on interactive login. -
All
delete/rmcommands require--yesin non-interactive mode.
Authentication
Auth resolves: --api-key flag > RESEND_API_KEY env > config file (resend login --key). Use --profile or RESEND_PROFILE for multi-profile.
Global Flags
Flag Description
--api-key <key>
Override API key for this invocation
-p, --profile <name>
Select stored profile
--json
Force JSON output (auto in non-TTY)
-q, --quiet
Suppress spinners/status (implies --json)
Available Commands
Command Group What it does
emails
send, get, list, batch, cancel, update
emails receiving
list, get, attachments, forward, listen
domains
create, verify, update, delete, list
logs
list, get, open
api-keys
create, list, delete
broadcasts
create, send, update, delete, list
contacts
create, update, delete, segments, topics
contact-properties
create, update, delete, list
segments
create, get, list, delete
templates
create, publish, duplicate, delete, list
topics
create, update, delete, list
webhooks
create, update, listen, delete, list
auth
login, logout, switch, rename, remove
whoami / doctor / update / open / commands
Utility commands
Read the matching reference file for detailed flags and output shapes.
Dry-run: Only emails send and broadcasts create support --dry-run (payload validation before send/create). They print { "dryRun": true, "request": { ... } } on stdout without calling the API. There is no --dry-run on emails batch, broadcasts send, or other commands yet.
Common Mistakes
Mistake Fix
1
Forgetting --yes on delete commands
All delete/rm subcommands require --yes in non-interactive mode — otherwise the CLI exits with an error
2
Not saving webhook signing_secret
webhooks create shows the secret once only — it cannot be retrieved later. Capture it from command output immediately
3
Omitting --quiet in CI
Without -q, spinners and status text still go to stderr (not stdout). Use -q for JSON on stdout with no spinner noise on stderr
4
Using --scheduled-at with batch
Batch sending does not support scheduled_at — use single emails send instead
5
Expecting domains list to include DNS records
List returns summaries only — use domains get <id> for the full records[] array
6
Sending a dashboard-created broadcast via CLI
Only API-created broadcasts can be sent with broadcasts send — dashboard broadcasts must be sent from the dashboard
7
Passing --events to webhooks update expecting additive behavior
--events replaces the entire subscription list — always pass the complete set
8
Expecting logs list to include request/response bodies
List returns summary fields only — use logs get <id> for full request_body and response_body
Common Patterns
Send an email:
resend emails send --from "you@domain.com" --to user@example.com --subject "Hello" --text "Body"
Send a React Email template (.tsx):
resend emails send --from "you@domain.com" --to user@example.com --subject "Welcome" --react-email ./emails/welcome.tsx
Domain setup flow:
resend domains create --name example.com --region us-east-1
# Configure DNS records from output, then:
resend domains verify <domain-id>
resend domains get <domain-id> # check status
Create and send a broadcast:
resend broadcasts create --from "news@domain.com" --subject "Update" --segment-id <id> --html "<h1>Hi</h1>" --send
CI/CD (no login needed):
RESEND_API_KEY=re_xxx resend emails send --from ... --to ... --subject ... --text ...
Check environment health:
resend doctor -q
When to Load References
-
Sending or reading emails → references/emails.md
-
Setting up or verifying a domain → references/domains.md
-
Managing API keys → references/api-keys.md
-
Creating or sending broadcasts → references/broadcasts.md
-
Managing contacts, segments, or topics → references/contacts.md, references/segments.md, references/topics.md
-
Defining contact properties → references/contact-properties.md
-
Working with templates → references/templates.md
-
Viewing API request logs → references/logs.md
-
Setting up webhooks or listening for events → references/webhooks.md
-
Auth, profiles, or health checks → references/auth.md
-
Multi-step recipes (setup, CI/CD, broadcast workflow) → references/workflows.md
-
Command failed with an error → references/error-codes.md
-
Resend SDK integration (Node.js, Python, Go, etc.) → Install the
resendskill -
AI agent email inbox → Install the
agent-email-inboxskill
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