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Communication

Openline

Scalar Field v1.0.0

Email, calls, and SMS

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Competitor profile

Developer declarations; not independently tested. Listing last checked Nov 4, 2026. Package observed Nov 3, 2026.

Declared capabilities

  • Send email
  • Read email
  • Place calls

Cost & access

This plugin does not sell products or process payments.

Declared limitations

  • Do not accept a sign-in code typed in chat. Codes are entered only on Openline's page.
  • Do not send a bulk unsolicited text campaign.
  • Do not read an inbox that is not the connected account.

Onboarding example

Send a short email from my Openline inbox.

View onboarding source →

View package source →

Description

From the marketplace listing

Openline is a communication plugin. A signed-in chat sends and reads email, places and reviews phone calls, and sends and reads SMS from an inbox and a US phone number that Openline provides. It uses only the inbox and number on the account you connect. It does not read another person's inbox, send bulk unsolicited messages, or take a sign-in code in chat. Sign-in happens on Openline's page.

Language: English · Automatically detected from descriptions.

ChatGPT marketplace listing ↗Website ↗Privacy policy ↗Terms ↗Support ↗

What changed

Keywords

Files & skills

File archives

Plugin package6 files · 3.03 MBBrowse files →
Skill instructions
get-started2.14 KB

View saved version →

---
name: get-started
description: Sign in to Openline, then send or read mail, place calls, and send or read SMS only when the operator asks.
---

# Openline

Openline is Scalar Field’s product. An agent signs the operator in, then sends or reads mail, places and reviews calls, or sends and reads SMS, only when the operator asks.

Product page: https://staging.openline.scalarfield.io/site/
MCP server: https://staging.openline.scalarfield.io/mcp
This file: https://staging.openline.scalarfield.io/skill

## Rules

- Sign-in is OAuth. Never ask for a 6-digit code or a token in chat. Never pass a token to a tool.
- Never fetch `/v1/auth/otp` or `/v1/auth/verify`. Never use `request_otp` or `verify_otp`. Never call `/v1/mail`.
- When `signed_in` is true, an inbox and a phone number already exist. Do not ask the operator to connect Gmail or a carrier.
- `logout` signs this client out.
- Read a tool’s schema instead of guessing arguments.
- If a tool result includes `tell_the_user`, explain that to the operator in your own words.
- On `do_not_email`, `do_not_text`, `email_invalid`, `rate_limited`, `quiet_hours`, or `insufficient_credits`, stop and tell the operator. Do not work around consent, caps, or a zero balance.

## Sign in

1. If you have no Openline tools, the operator adds `https://staging.openline.scalarfield.io/mcp`, then you retry.
2. Call `connect` (or `auth_status`).
3. If the host shows Connect / Authorize, the operator signs in on Openline’s page. After the inbox code, the page says the sign-in email is already verified and can ask for a phone number. The phone number is optional; Skip continues.
4. Call `connect` again.
5. Continue only when `signed_in` is true.

## When the operator asks

Mail. `send_email` (`to`, `subject`, `body`). Then `list_emails`, then `get_email` (`message_id`). Confirm what you sent and from which address.

Calls. `call_phone` (`to`, `goal`) and pass the details the operator gives you. Review with `list_calls`, then `get_call`.

SMS. `send_sms` (`to`, `body`). History is `list_messages` and `get_message`.

Other tools cover contacts, scheduled calls, inbound policy, and credits. Use one when the operator asks.

Release notes

Initial release of Openline 1.0.0.

Declared in the saved package. Remote tools may change independently.

Package details

Publisher declarations from the archived package. These are separate from our research and the live service's terms.

Package author
Scalar Field
Keywords
See keywords
Getting started skill
./skills/get-started/SKILL.md
Commerce declaration
Does not support commerceThis does not establish whether access is free or paid.
Review scenarios
5 positive · 3 negativeScenario counts, not test results.

Declared capabilities

  • Send email
  • Read email
  • Place calls
  • Send SMS
  • Read SMS

Package observed Nov 3, 2026.

plugin.json
Technical details
First seen
Oct 24, 2026 · 12:40 UTC
Last seen
Nov 4, 2026 · 06:00 UTC
Collection status
Collected

plugin_asdk_app_6ad8aa2e503c8191979de976fe7d78b7

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