Sablier Protocol

Sablier

Sablier is an onchain token distribution protocol. It powers token vesting, airdrop distributions, and onchain payroll across 27+ EVM chains.

Organizations use Sablier to distribute tokens at scale—whether compensating contributors, vesting team allocations, or airdropping to thousands of recipients. The protocol handles the complexity of time-based token releases, letting teams focus on what they're building rather than manual distribution logistics.

Core Use Cases

Token Vesting

Lock tokens with customizable unlock schedules. Vesting configurations include:

• Linear unlocks — Constant rate from start to end
• Cliff periods — Initial waiting period before any tokens unlock
• Tranched releases — Discrete unlocks at specific intervals (monthly, quarterly, yearly)
• Custom curves — Exponential, logarithmic, or step-based unlock patterns

All vesting positions are represented as NFTs, enabling recipients to transfer or trade their allocations.

Airdrop Distributions

Distribute tokens to thousands of recipients efficiently using Merkle trees:

• Gas-optimized claiming—recipients pay only their own claim gas
• Built-in vesting—tokens can stream after claim rather than unlocking immediately
• Clawback support—reclaim unclaimed allocations after expiration
• Flexible eligibility—custom claim conditions and allowlists

Onchain Payroll

Compensate contributors with tokens that accrue continuously:

• Real-time access to earned compensation
• No waiting for pay dates—withdraw anytime
• Adjustable payment rates for changing arrangements
• Clean separation between sender funding and recipient access

How It Works

Sablier uses streaming as the underlying mechanism for token distribution. Rather than transferring tokens in lump sums, the protocol releases them continuously over time—by the second.

Recipients withdraw their tokens whenever convenient. No sender approval required, no claim windows to miss. The protocol tracks exactly how much has vested at any moment, and recipients access their portion on demand.

Every distribution position mints an NFT to the recipient. This representation enables:

• Transferring ownership to another address
• Trading positions on NFT marketplaces
• Using vesting positions as collateral in DeFi

Protocol Modules

Sablier comprises three modules, each optimized for different distribution patterns:

Lockup

The core vesting module. Creators deposit tokens upfront and define an unlock schedule. Supports three stream shapes:

• Linear — Constant unlock rate, optional cliff
• Dynamic — Custom curves using configurable segments
• Tranched — Step-wise unlocks at defined timestamps

Flow

A pay-as-you-go module for ongoing distributions. No upfront deposit required—senders top up as needed while recipients withdraw accrued amounts. Ideal for:

• Salaries and recurring payments
• Open-ended contributor arrangements
• Situations where total distribution isn't known upfront

Airdrops

Merkle-tree based distribution for large recipient sets. Create a single contract that serves claims for thousands of addresses. Combines gas efficiency with optional vesting—recipients can receive streaming positions rather than immediate lump sums.

Key Features

Stream Shapes

Configure unlock curves to match any distribution requirement:

| Shape | Pattern | Use Case | | -------- | --------------- | ------------------------------------- | | Linear | Constant rate | Standard vesting, salaries | | Dynamic | Custom segments | Backloaded vesting, milestones | | Tranched | Discrete steps | Quarterly unlocks, scheduled releases |

NFT Representation

All Lockup positions mint ERC-721 tokens. Recipients hold NFTs representing their vesting allocations, enabling secondary market liquidity and DeFi composability.

Hooks System

Execute custom logic in response to stream events. Hooks enable:

• Automatic reinvestment of received tokens
• Notifications to external systems
• Custom access controls or conditions

Batch Operations

Create hundreds of distributions in a single transaction. Essential for:

• Company-wide vesting setup
• Large contributor grants
• Airdrop campaigns

Permissionless Infrastructure

Pure DeFi infrastructure with no gatekeepers. Anyone can create distributions, build on the protocol, or integrate it into existing products.

Platform Availability

Sablier smart contracts are deployed across 27+ EVM chains including Ethereum, Arbitrum, Optimism, Base, Polygon, Avalanche, and BSC.

User Interfaces

| Network | Interface | | ---------- | ------------------------------------------ | | EVM chains | app.sablier.com |

The interface provides full access to create, manage, and withdraw from distributions without writing code.

Developer Integration

Integrate Sablier into applications using:

• Smart contract calls — Direct interaction with Lockup, Flow, or Airdrops contracts
• Subgraph APIs — Query distribution data via The Graph
• SDK libraries — TypeScript utilities for common operations
• CSV imports — Bulk distribution creation via the UI

Common integration patterns include token vesting platforms, payroll systems, DAO contributor management, and DeFi reward distribution.

Resources

Documentation

• Sablier Docs — Protocol documentation and guides

Smart Contracts (Solidity)

| Module | Repository | UI Product | | -------- | ----------------------------------------------------------------- | ---------- | | Lockup | sablier-labs/lockup | Vesting | | Flow | sablier-labs/flow | Payments | | Airdrops | sablier-labs/airdrops | Airdrops |

Indexers

• sablier-labs/indexers — Subgraph deployments for querying onchain data

Examples & Sandboxes

• sablier-labs/evm-examples — Solidity integration examples
• sablier-labs/sandbox — Generic frontend sandbox
• sablier-labs/airdrop-sandbox — Custom airdrop development sandbox

Branding

• sablier-labs/branding — Logos, colors, and brand assets

Support

If you encounter any issues or unexpected errors with this skill, please file an issue at sablier-labs/sablier-skills.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: sablier-labs
• Source: sablier-labs/sablier-skills
• License: MIT

Install and usage instructions live in the source repository linked above.