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endaoment

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UpdatedApril 14, 2026 at 23:49

Donate to charities onchain via Endaoment. Use when the user wants to donate crypto to charity, make a charitable contribution, give to nonprofits, support a cause, or donate to a 501(c)(3). Supports Base, Ethereum, and Optimism. Handles USDC donations directly or swaps ETH/tokens to USDC automatically.

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enuno

enuno/crewless-capital

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Software DevelopersComputer and Mathematical Occupations·SOC 15-1252

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SKILL.md

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name	endaoment
description	Donate to charities onchain via Endaoment. Use when the user wants to donate crypto to charity, make a charitable contribution, give to nonprofits, support a cause, or donate to a 501(c)(3). Supports Base, Ethereum, and Optimism. Handles USDC donations directly or swaps ETH/tokens to USDC automatically.

Endaoment Charity Donations

Donate to 501(c)(3) nonprofits onchain via Endaoment's smart contracts.

Quick Start

Find a Charity

Search by name or EIN:

./scripts/search.sh "27-1661997"         # EIN lookup (GiveDirectly)
./scripts/search.sh "Red Cross"          # Name search

Donate USDC (Base)

./scripts/donate.sh <ein> <amount_usdc>

Example: Donate $5 USDC to GiveDirectly:

./scripts/donate.sh 27-1661997 5

How It Works

The donate script uses Bankr's arbitrary transaction feature to:

Approve USDC to the Endaoment OrgFundFactory
Call deployOrgAndDonate(orgId, amount) which:
- Deploys the charity's entity contract on Base (if not already deployed)
- Donates the specified USDC amount

Popular Charities

Charity	EIN
GiveDirectly	27-1661997
North Shore Animal League America	11-1666852
American Red Cross	53-0196605
Doctors Without Borders	13-3433452
ASPCA	13-1623829

See references/popular-charities.md for more.

Contract Addresses (Base)

Contract	Address
Registry	`0x237b53bcfbd3a114b549dfec96a9856808f45c94`
OrgFundFactory	`0x10fd9348136dcea154f752fe0b6db45fc298a589`
USDC	`0x833589fcd6edb6e08f4c7c32d4f71b54bda02913`

Fees

Org donations: 1.5% fee (e.g., $100 → $1.50 fee, $98.50 to charity)
Fund donations: 0.05-0.50% tiered

Requirements

Bankr skill with API key configured
USDC balance on Base
ETH on Base for gas (Bankr covers this)

Technical Details

Function Selectors

approve(address,uint256): 0x095ea7b3
deployOrgAndDonate(bytes32,uint256): 0xdb9e30cc

OrgId Encoding

The EIN (e.g., "11-1666852") is encoded as bytes32:

"11-1666852" → 0x31312d3136363638353200000000000000000000000000000000000000000000

Notes

All donations are tax-deductible (US 501(c)(3) orgs)
Donations are permissionless — anyone can donate
Uses Bankr arbitrary transactions for contract interaction
Works on Base; other chains require different addresses

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name	endaoment
description	Donate to charities onchain via Endaoment. Use when the user wants to donate crypto to charity, make a charitable contribution, give to nonprofits, support a cause, or donate to a 501(c)(3). Supports Base, Ethereum, and Optimism. Handles USDC donations directly or swaps ETH/tokens to USDC automatically.

Endaoment Charity Donations

Donate to 501(c)(3) nonprofits onchain via Endaoment's smart contracts.

Quick Start

Find a Charity

Search by name or EIN:

./scripts/search.sh "27-1661997"         # EIN lookup (GiveDirectly)
./scripts/search.sh "Red Cross"          # Name search

Donate USDC (Base)

./scripts/donate.sh <ein> <amount_usdc>

Example: Donate $5 USDC to GiveDirectly:

./scripts/donate.sh 27-1661997 5

How It Works

The donate script uses Bankr's arbitrary transaction feature to:

Approve USDC to the Endaoment OrgFundFactory
Call deployOrgAndDonate(orgId, amount) which:
- Deploys the charity's entity contract on Base (if not already deployed)
- Donates the specified USDC amount

Popular Charities

Charity	EIN
GiveDirectly	27-1661997
North Shore Animal League America	11-1666852
American Red Cross	53-0196605
Doctors Without Borders	13-3433452
ASPCA	13-1623829

See references/popular-charities.md for more.

Contract Addresses (Base)

Contract	Address
Registry	`0x237b53bcfbd3a114b549dfec96a9856808f45c94`
OrgFundFactory	`0x10fd9348136dcea154f752fe0b6db45fc298a589`
USDC	`0x833589fcd6edb6e08f4c7c32d4f71b54bda02913`

Fees

Org donations: 1.5% fee (e.g., $100 → $1.50 fee, $98.50 to charity)
Fund donations: 0.05-0.50% tiered

Requirements

Bankr skill with API key configured
USDC balance on Base
ETH on Base for gas (Bankr covers this)

Technical Details

Function Selectors

approve(address,uint256): 0x095ea7b3
deployOrgAndDonate(bytes32,uint256): 0xdb9e30cc

OrgId Encoding

The EIN (e.g., "11-1666852") is encoded as bytes32:

"11-1666852" → 0x31312d3136363638353200000000000000000000000000000000000000000000

Notes

All donations are tax-deductible (US 501(c)(3) orgs)
Donations are permissionless — anyone can donate
Uses Bankr arbitrary transactions for contract interaction
Works on Base; other chains require different addresses