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Endaoment

  • 1 installs
  • 1.2k repo stars
  • Updated August 1, 2026
  • bankrbot/clawdbot-skill

endaoment is a Claude skill that donates crypto to 501(c)(3) charities onchain via Endaoment smart contracts.

About

Endaoment lets an agent donate crypto to 501(c)(3) nonprofits onchain via Endaoment's smart contracts. It finds a charity by name or EIN and donates USDC on Base, using Bankr's arbitrary-transaction feature to approve USDC and call deployOrgAndDonate. It supports Base, Ethereum and Optimism, and can swap ETH or tokens to USDC automatically.

  • Donates crypto to 501(c)(3) nonprofits onchain via Endaoment smart contracts
  • Finds charities by name or EIN and donates USDC on Base
  • Uses Bankr arbitrary transactions to approve USDC and call deployOrgAndDonate

Endaoment by the numbers

  • 1 all-time installs (skills.sh)
  • Ranked #426 of 479 Web3 & Blockchain skills by installs in the Skillselion catalog
  • Data as of Aug 4, 2026 (Skillselion catalog sync)
At a glance

endaoment capabilities & compatibility

Requires a configured Bankr API key and a USDC balance; Bankr covers gas.

Capabilities
trading
Use cases
trading
Pricing
Bring your own API key
From the docs

What endaoment says it does

Donate to 501(c)(3) nonprofits onchain via Endaoment's smart contracts.
SKILL.md
The donate script uses Bankr's arbitrary transaction feature to:
SKILL.md
npx skills add https://github.com/bankrbot/clawdbot-skill --skill endaoment

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Listed on Skillselion
Installs1
repo stars1.2k
Last updatedAugust 1, 2026
Repositorybankrbot/clawdbot-skill

What it does

Donate USDC to 501(c)(3) charities onchain by EIN or name via Endaoment smart contracts on Base.

Who is it for?

Donating USDC to US 501(c)(3) nonprofits onchain by EIN or name.

Skip if: Donations outside supported chains without different contract addresses.

When should I use this skill?

The user wants to donate crypto to charity, give to a nonprofit or support a 501(c)(3).

What you get

A USDC donation reaches a chosen 501(c)(3) nonprofit through Endaoment's contracts on Base.

By the numbers

  • 1.5% fee on org donations
  • 5-charity quick-reference EIN table

Files

SKILL.mdMarkdownGitHub ↗

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: 1. Approve USDC to the Endaoment OrgFundFactory 2. Call deployOrgAndDonate(orgId, amount) which:

  • Deploys the charity's entity contract on Base (if not already deployed)
  • Donates the specified USDC amount

Popular Charities

CharityEIN
GiveDirectly27-1661997
North Shore Animal League America11-1666852
American Red Cross53-0196605
Doctors Without Borders13-3433452
ASPCA13-1623829

See references/popular-charities.md for more.

Contract Addresses (Base)

ContractAddress
Registry0x237b53bcfbd3a114b549dfec96a9856808f45c94
OrgFundFactory0x10fd9348136dcea154f752fe0b6db45fc298a589
USDC0x833589fcd6edb6e08f4c7c32d4f71b54bda02913

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

Related skills

FAQ

How do donations work?

The donate script uses Bankr to approve USDC and call deployOrgAndDonate, which deploys the charity entity if needed and donates the USDC.

Are donations tax-deductible?

Yes, all donations are tax-deductible for US 501(c)(3) organizations per the docs.

Web3 & Blockchainpaymentsfinance

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