Knock
Best agent-native notification fabric (toolkit + human-in-the-loop). Courier remains Depot orchestration…
Best agent-native notification fabric (toolkit + human-in-the-loop). Courier remains Depot orchestration default for broader maturity; prefer Knock when agents must trigger/approve notifications as tools. Strengths: First-class Agent Toolkit + AI agent workflow steps; Cross-channel prefs/batching/guides with clear free tier; HIPAA BAA on Enterprise.
Lock-in risk: higher = more lock-in (worse). Overall already inverts this dimension.
Best agent-native notification fabric (toolkit + human-in-the-loop). Courier remains Depot orchestration default for broader maturity; prefer Knock when agents must trigger/approve notifications as tools.
Strengths
- · First-class Agent Toolkit + AI agent workflow steps
- · Cross-channel prefs/batching/guides with clear free tier
- · HIPAA BAA on Enterprise
Weaknesses
- · Starter jumps to $250/mo
- · Does not replace SendGrid/Twilio spend
- · Guide/active-user metering adds a second dimension
Pricing notes
As of 2026-09-14 (knock.app/pricing): Developer $0 — 10k messages, 500 guide active users, 500 AI agent credits (then $0.01/credit). Starter $250/mo — 50k messages then $0.005/msg, 2.5k guide users then $0.05, 2,000 AI agent credits. Enterprise custom (volume or monthly notified-user pricing, HIPAA/BAA, SAML/SCIM). Downstream ESP/SMS still billed separately. Agent Toolkit exposes workflows as agent tools; AI agent function credits by model+tokens (+3 min if web search).
Sourced pricing
Contract status unavailable · no_sourced_price. Single normalized $/1M: null. Machine list: /api/pricing?provider=knock
No sourced SKU row. Notes above stay prose.
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