HumanLayer

✓ verified, sync 2026-08-20

HumanLayer is an API and SDK that enables tool-calling AI Agents to contact humans for help, feedback, and approvals. It provides human-in-the-loop capabilities for AI Agents, allo….

PricingFree

Rating3.0 on Toolify

Category AI AgentAI APIAI Developer ToolsAI WorkflowLarge Language Models (LLMs)AI Scheduling +4

First indexed2026-08-20

What it does.

HumanLayer is an API and SDK that enables tool-calling AI Agents to contact humans for help, feedback, and approvals. It provides human-in-the-loop capabilities for AI Agents, allowing builders to create agents that feel like real coworkers. HumanLayer supports various channels like Slack, Email, and Discord, and integrates with major orchestration frameworks and LLMs.

registry ID ndock:tool:humanlayer

Features

Require Human Approval for Function Calls
OmniChannel Contact (Slack, Email, Discord)
Advanced Approval Workflows with Escalations and Timeouts
Human as Tool (hl.human_as_tool())
Granular Routing of Approvals
LLM and Framework Agnostic

Pricing history.

auto-diffed on every sync: the changelog other directories don't keep

No approved price events on record

This listing's pricing hasn't changed since indexing, or a change is still in review. Zero events is a real answer, not missing data.

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