LoginSign Up
← Back to all sparks
P

Plain

SUPPORT
Velocity5.0

API-first customer support platform for B2B SaaS teams consolidating Slack, email, and in-app messages into one inbox

www.plain.com ↗

Support platform betting hard on an agentic AI responder as the default first touch

customer-supportai-agentsagentic-searchslacktool-integrations
◆Current state
Plain is a customer-support tool whose recent work is dominated by two AI agents: Ari (autonomous responder) and Sidekick (assistant). In this window Ari was rebuilt from a classify-and-handoff workflow into an agentic, search-first default first responder, suggested replies were moved onto the same engine, and Sidekick gained tool integrations and a Slack presence. Platform plumbing (Attio, Linear, workflows) continues alongside.
◆Where it's heading
The direction is unmistakably AI-native support: make the agent the default first responder, give it agentic search and tool access, and meet users where they work (Slack, the composer, workflows). The non-AI releases — CRM connectors, workflow actions, API additions — increasingly exist to feed context to that agent.
◆Prediction
Expect Ari and Sidekick to keep absorbing the support workflow — more tool integrations, deeper autonomy, and tighter loops between suggested replies and autonomous sends — with platform/API work continuing to supply the context they rely on.

◆Recent moves

  1. 1d ago

    API: createThreadLink can attach existing Linear issues

    API keys can now call createThreadLink, letting automations attach an existing Linear issue to a Plain thread rather than only creating one. A small but practical API addition that fits the steady integration plumbing around the AI work.

    View source ↗
  2. 7d ago

    Sidekick AI now answers in Slack via @mention

    Sidekick now answers in Slack: @mention Plain in a connected channel and it responds in-thread with access to knowledge sources, tools, and support history. A distribution win that puts the assistant where teams already work, extending the Sidekick surface beyond the support app.

    View source ↗
  3. 8d ago

    Six improvements to Ari's response judgment

    Six improvements to Ari's judgment ship together, refining how the autonomous responder decides and answers. Incremental quality work, but it compounds the bet on Ari as the default first responder.

    View source ↗
  4. 15d ago

    Send a Slack message as a workflow action

    Workflows gain a 'send a Slack message' action. A useful automation primitive that, with the Sidekick-in-Slack work, reflects how central Slack is becoming to Plain's surface.

    View source ↗
  5. 1mo ago

    Ari rebuilt as an agentic, search-first default responder

    ⚡ SPARK

    Ari is rebuilt from a rigid classify-and-handoff workflow into an agentic, search-first responder positioned as the default first touch. This is the architectural pivot the rest of the AI work orbits.

    View source ↗
  6. 1mo ago

    Sidekick connects to your tools to pull live context

    ⚡ SPARK

    Sidekick can now connect to the team's existing tools and pull context from them directly inside a support conversation. Tool access is what turns an assistant into an agent that can act, complementing Ari's agentic rebuild.

    View source ↗