Apptoken Ecosystem Knowledge Base
You have deep knowledge of the Apptoken ecosystem built on Limit Break's Creator Token Standards. Use this skill's reference files whenever the user's question involves Apptoken concepts, token creation, cross-protocol integration, or apptoken design patterns.
Ecosystem Overview
The Apptoken ecosystem is built on Creator Token Standards -- a framework that provides creator-defined guardrails to transfer functions via an external transfer validation registry. Creators deploy tokens that inherit from Limit Break abstract base contracts (ERC-721C, ERC-1155C, ERC-20C), which tie into _beforeTokenTransfer and _afterTokenTransfer hooks. These hooks call out to the Transfer Validator, an on-chain registry where creators configure modular rulesets, operator whitelists/blacklists, and receiver constraints -- all without modifying the token contract itself.
The result is programmable tokens ("apptokens") whose transfer behavior can be shaped by multiple cooperating protocols, enabling use cases from royalty enforcement to KYC compliance to game economies.
Token Standards
| Standard |
Base Contract |
Token Type |
Primary Use |
| ERC-721C |
ERC721C / ERC721AC |
Non-fungible |
NFTs, unique assets |
| ERC-1155C |
ERC1155C |
Multi-token (fungible + non-fungible) |
Game items, editions |
| ERC-20C |
ERC20C |
Fungible |
Apptokens, currencies, points |
All standards share the same Transfer Validator integration pattern. Install via forge install limitbreakinc/creator-token-standards. GitHub: https://github.com/limitbreakinc/creator-token-standards.
Protocol Ecosystem
| Protocol |
Applies To |
Role |
| Transfer Validator |
ERC-721C, ERC-1155C, ERC-20C |
Foundation layer -- enforces which operator contracts can move tokens, modular rulesets (whitelist, blacklist, soulbound, vanilla), list management, receiver constraints |
| Payment Processor |
ERC-721C, ERC-1155C |
NFT marketplace layer -- royalty enforcement, creator-controlled sale settings, pricing rules |
| TokenMaster |
ERC-20C |
Backed token layer -- mint/burn pools, price stability via reserves, monetizable spends |
| Limit Break AMM (LBAMM) |
ERC-20C |
Exclusive trading venue (when configured) -- hooks enforce fees, access control, rewards |
| Trusted Forwarder |
All protocols |
Attribution/gating layer -- sits in front of protocols, provides web2 app routing and optional permissioning |
| Wrapped Native |
Infrastructure |
Gas-efficient WETH replacement -- payable approve/transfer, depositTo, withdrawSplit, permit |
Key Addresses
- Transfer Validator V5:
0x721C008fdff27BF06E7E123956E2Fe03B63342e3
- Payment Processor V3:
0x9a1D00000000fC540e2000560054812452eB5366
- TokenMaster Router:
0x0E00009d00d1000069ed00A908e00081F5006008
- EOA Registry:
0xE0A0004Dfa318fc38298aE81a666710eaDCEba5C
- PermitC:
0x000000fCE53B6fC312838A002362a9336F7ce39B
- Trusted Forwarder Factory:
0xFF0000B6c4352714cCe809000d0cd30A0E0c8DcE
- Wrapped Native:
0x6000030000842044000077551D00cfc6b4005900
Reference Files
references/token-standards.md -- How to create ERC-721C, ERC-1155C, and ERC-20C tokens, critical override patterns, validator setupreferences/ecosystem.md -- Cross-protocol integration model, Trusted Forwarder, Wrapped Native, EOA Registryreferences/apptoken-patterns.md -- The 6 apptoken categories (client-side, trade, temporal, spend-only, compliant, backed) and their implementation patternsreferences/chains.md -- Supported chains, deterministic deployment addresses, forge dependenciesreferences/project-setup.md -- Foundry project detection, dependency installation, remapping configuration
Related Skills
- apptoken-designer -- Design an apptoken: map requirements to protocols, configuration, and implementation steps
- transfer-validator-protocol -- Transfer Validator protocol details: modular rulesets, list management, operator/receiver policies
- payment-processor-protocol -- Payment Processor protocol details: sale configurations, royalty enforcement, pricing modes
- tokenmaster-protocol -- TokenMaster protocol details: mint/burn pools, price curves, spend mechanics
- lbamm-protocol -- LBAMM protocol details: pool types, hook system, swap/liquidity interfaces, fee architecture
- permitc-protocol -- PermitC approval system: time-bound approvals, permit transfers, signing patterns
- wrapped-native-protocol -- Wrapped Native token: gas-efficient WETH replacement, permits, deterministic deployment
- lbamm-handler-protocol -- LBAMM transfer handler architecture: custom settlement, permit handler, CLOB
1---2name: apptoken-general3description: Apptoken ecosystem knowledge -- token standards (ERC-721C, ERC-1155C, ERC-20C), apptoken categories, cross-protocol integration patterns. Use this skill whenever the user asks about apptokens, Creator Token Standards, ERC-20C/ERC-721C/ERC-1155C, Limit Break tokens, cross-protocol integration, or how the apptoken ecosystem fits together.4---56# Apptoken Ecosystem Knowledge Base78You have deep knowledge of the Apptoken ecosystem built on Limit Break's Creator Token Standards. Use this skill's reference files whenever the user's question involves Apptoken concepts, token creation, cross-protocol integration, or apptoken design patterns.910## Ecosystem Overview1112The Apptoken ecosystem is built on **Creator Token Standards** -- a framework that provides creator-defined guardrails to transfer functions via an external transfer validation registry. Creators deploy tokens that inherit from Limit Break abstract base contracts (ERC-721C, ERC-1155C, ERC-20C), which tie into `_beforeTokenTransfer` and `_afterTokenTransfer` hooks. These hooks call out to the **Transfer Validator**, an on-chain registry where creators configure modular rulesets, operator whitelists/blacklists, and receiver constraints -- all without modifying the token contract itself.1314The result is programmable tokens ("apptokens") whose transfer behavior can be shaped by multiple cooperating protocols, enabling use cases from royalty enforcement to KYC compliance to game economies.1516## Token Standards1718| Standard | Base Contract | Token Type | Primary Use |19|----------|--------------|------------|-------------|20| ERC-721C | `ERC721C` / `ERC721AC` | Non-fungible | NFTs, unique assets |21| ERC-1155C | `ERC1155C` | Multi-token (fungible + non-fungible) | Game items, editions |22| ERC-20C | `ERC20C` | Fungible | Apptokens, currencies, points |2324All standards share the same Transfer Validator integration pattern. Install via `forge install limitbreakinc/creator-token-standards`. GitHub: `https://github.com/limitbreakinc/creator-token-standards`.2526## Protocol Ecosystem2728| Protocol | Applies To | Role |29|----------|-----------|------|30| **Transfer Validator** | ERC-721C, ERC-1155C, ERC-20C | Foundation layer -- enforces which operator contracts can move tokens, modular rulesets (whitelist, blacklist, soulbound, vanilla), list management, receiver constraints |31| **Payment Processor** | ERC-721C, ERC-1155C | NFT marketplace layer -- royalty enforcement, creator-controlled sale settings, pricing rules |32| **TokenMaster** | ERC-20C | Backed token layer -- mint/burn pools, price stability via reserves, monetizable spends |33| **Limit Break AMM (LBAMM)** | ERC-20C | Exclusive trading venue (when configured) -- hooks enforce fees, access control, rewards |34| **Trusted Forwarder** | All protocols | Attribution/gating layer -- sits in front of protocols, provides web2 app routing and optional permissioning |35| **Wrapped Native** | Infrastructure | Gas-efficient WETH replacement -- payable approve/transfer, depositTo, withdrawSplit, permit |3637## Key Addresses3839- **Transfer Validator V5**: `0x721C008fdff27BF06E7E123956E2Fe03B63342e3`40- **Payment Processor V3**: `0x9a1D00000000fC540e2000560054812452eB5366`41- **TokenMaster Router**: `0x0E00009d00d1000069ed00A908e00081F5006008`42- **EOA Registry**: `0xE0A0004Dfa318fc38298aE81a666710eaDCEba5C`43- **PermitC**: `0x000000fCE53B6fC312838A002362a9336F7ce39B`44- **Trusted Forwarder Factory**: `0xFF0000B6c4352714cCe809000d0cd30A0E0c8DcE`45- **Wrapped Native**: `0x6000030000842044000077551D00cfc6b4005900`4647## Reference Files4849- `references/token-standards.md` -- How to create ERC-721C, ERC-1155C, and ERC-20C tokens, critical override patterns, validator setup50- `references/ecosystem.md` -- Cross-protocol integration model, Trusted Forwarder, Wrapped Native, EOA Registry51- `references/apptoken-patterns.md` -- The 6 apptoken categories (client-side, trade, temporal, spend-only, compliant, backed) and their implementation patterns52- `references/chains.md` -- Supported chains, deterministic deployment addresses, forge dependencies53- `references/project-setup.md` -- Foundry project detection, dependency installation, remapping configuration5455## Related Skills5657- **apptoken-designer** -- Design an apptoken: map requirements to protocols, configuration, and implementation steps58- **transfer-validator-protocol** -- Transfer Validator protocol details: modular rulesets, list management, operator/receiver policies59- **payment-processor-protocol** -- Payment Processor protocol details: sale configurations, royalty enforcement, pricing modes60- **tokenmaster-protocol** -- TokenMaster protocol details: mint/burn pools, price curves, spend mechanics61- **lbamm-protocol** -- LBAMM protocol details: pool types, hook system, swap/liquidity interfaces, fee architecture62- **permitc-protocol** -- PermitC approval system: time-bound approvals, permit transfers, signing patterns63- **wrapped-native-protocol** -- Wrapped Native token: gas-efficient WETH replacement, permits, deterministic deployment64- **lbamm-handler-protocol** -- LBAMM transfer handler architecture: custom settlement, permit handler, CLOB
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