Available credit i
$0.00
Prepaid balance
Clear outcomes from communication
Turn communication into a clear next step.
Write a focused assessment in plain language. Closing Threads returns a structured result that people can review and act on.
✓ No password or email signup✓ Private by default
Example resultFollow-up assessmentComplete
“Thanks for the update. I’ll send the revised estimate by Thursday.”
01Follow-up neededNoBoolean
02Next actionSend estimateChoice
Defined by your assessmentReview before acting
01
Define the decision
Describe what matters in Markdown. Keep each question clear and focused.
02
Check a message
Use the playground or call the API with the communication you want to review.
03
Get a usable result
Receive typed answers with a request record. Your team stays in control of what happens next.
Create a passkey
Create a passkey on this device or in your password manager. No password or email is needed.
Already have an account?
By continuing, you agree to our Terms and Privacy notice.
Save your recovery codes
These codes can restore access if you lose your passkeys. Each code works once. Closing Threads can’t show them again.
Your account ID
Keep these somewhere safe. Anyone with a code and your account ID may be able to access your account.
AccountWorkspace
Overview
Manage your assessments, usage, and account settings.
This month
$0.00
Usage resets monthly in UTC
Tokens used
0
of 1,000,000 monthly
Privacy mode
Private
Content isn’t stored here
Your assessments
Reusable guides for consistent decisions.
Get started
Make your first assessment.
Recent requests
Your latest assessment activity.
| Request | Date | Status | Tokens | Charge |
|---|
Try an assessment
Playground
Check a message against an assessment and review the structured result.
Your library
Assessments
Define the questions and answer types used to review communication.
Developer settings
API keys
Use a key to call Closing Threads from your application.
Keep your keys private. New keys appear once. Copy a key now; you can revoke it at any time.
Your keys
Revoked keys stop working immediately.
Copy your new API key
This key will only be shown once. Store it in your secret manager.
Make your first request
Send an assessment and the communication you want to review. Keep your key on your server; don’t put it in browser code.
curl https://app.closingthreads.com/v1/assessments/run \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: YOUR_UNIQUE_REQUEST_ID" \
-d '{"communication":"Thanks, I will reply Thursday.","markdown":"# Follow-up\n\n## Does this need a reply?\n\n### Fact ID: reply_needed\n### Type: boolean"}'Your data, your choice
Privacy settings
Choose how Closing Threads handles assessment content.
What we keep
Account and billing
We keep account, payment, and usage records needed to manage your service and comply with legal requirements.
Assessment definitions
Saved assessment instructions remain in your account so you can reuse them. Don’t put sensitive personal details in a definition.
Request content
Private mode doesn’t retain the communication or result after processing. Standard mode stores it only with your consent, encrypted, for up to 30 days.
Account controls
Account
Manage your passkeys, recovery codes, and usage limits.
Recovery account ID
You need this ID with a recovery code if you lose your passkeys.
Passkeys
Sign in securely without a password.
Monthly limits
Stop usage at the limit you choose. All amounts are in USD.
Prepaid credits
Buy USD credits for future assessments. Tax is calculated at checkout when applicable.
Recovery codes
Generate a fresh set if you’ve lost or used a code. Old codes stop working.