Three things bundled because they're all reference material you reach for in the same moment: "which standard handles X?", "is there an existing project doing Y?", and "where's the canonical doc for Z?".
This file carries the SEP/CAP standards routing map. The other two live alongside it — read the file that matches the task:
| Task | File |
|---|---|
| Pick the right SEP/CAP, check standard status, map a use case to standards docs | this file |
| Find DeFi protocols, wallets, dev tools, indexers, oracles, bridges, builder teams, funding programs | ecosystem.md |
| Locate official docs, SDKs, CLI tools, testing guides, RPC providers, learning resources, community links | resources.md |
When to use this skill
- Picking the right SEP for an integration (anchors, deposits, federation, deep links, KYC, paths)
- Checking CAP status for a protocol feature you want to rely on
- Finding existing DeFi protocols, wallets, or infrastructure to integrate with rather than rebuild
- Locating official docs, SDKs, or community resources
Related skills
- Implementing a SEP-41 token interface →
../assets/SKILL.md,../smart-contracts/SKILL.md - Frontend SEP-7 / SEP-10 flows →
../dapp/SKILL.md - CAPs for cryptography (BLS, BN254, Poseidon) →
../zk-proofs/SKILL.md - x402/MPP protocol context →
../agentic-payments/SKILL.md - SEP-55 verified builds for mainnet contracts →
../smart-contracts/SKILL.md
SEP / CAP Standards Reference
When to use this guide
Use this when you need:
- The right SEP/CAP for a feature or integration
- Interoperability guidance for wallets, anchors, and contracts
- A fast map from use case to official standards docs
Maintenance note
Standards status can change quickly. Before implementation, verify current status in:
- SEPs: stellar-protocol/ecosystem
- CAPs: stellar-protocol/core
Treat this file as a routing map, not a source of final governance/status truth.
High-value SEPs for app developers
Contracts and token interfaces
- SEP-0041: Soroban token interface
- SEP-0046: Contract metadata in Wasm
- SEP-0048: Contract interface specification
- SEP-0049: Upgradeable-contract guidance
- SEP-0050: NFT standard work
- SEP-0055: Contract build verification
- SEP-0056: Vault-style tokenized products
- SEP-0057: Regulated token patterns (T-REX)
Auth, identity, and metadata
Anchor and fiat integration
- SEP-0006: Programmatic deposit/withdrawal API
- SEP-0024: Hosted interactive anchor flow
- SEP-0031: Cross-border payment flow
- SEP-0012: KYC data exchange
High-value CAPs for smart contract developers
Smart contract foundations
- CAP-0046: Soroban overview
- CAP-0046 subdocuments (
cap-0046-*.md): runtime, lifecycle, host functions, storage, auth, metering
Frequently used contract capabilities
- CAP-0051: secp256r1 verification (passkey-related cryptography)
- CAP-0053: TTL extension behavior
- CAP-0058: constructors (
__constructor) - CAP-0059: BLS12-381 primitives
- CAP-0067: protocol/runtime improvements including asset/event model changes
Newer and draft crypto/features
- CAP-0074: BN254 host functions (G1 add/mul, pairing check) — Final, Protocol 25+
- CAP-0075: Poseidon/Poseidon2 permutation primitives — Final, Protocol 25+
- CAP-0079: muxed-address strkey conversion proposal
- CAP-0080: BN254 G1 MSM, Fr arithmetic, on-curve checks — Implemented, Protocol 26+
Use the CAP preamble status fields as the source of truth for implementation readiness.
Quick mapping by use case
I am building a fungible token
- Start with SEP-0041 interface expectations.
- Prefer Stellar Assets + SAC interop unless custom logic is required.
- If regulated, review SEP-0057 patterns.
I need upgrade-safe contracts
- Read SEP-0049 guidance for upgrade process design.
- Use CAP-0058 constructors for atomic initialization where protocol support exists.
- Add migration/versioning strategy before deploying upgradeable contracts.
I am building a smart-wallet flow
- Use SEP-0010 for web authentication flows.
- Review CAP-0051 for passkey-related cryptographic primitives.
- Align wallet UX and signing payloads with current SDK guidance.
I need anchor integration for fiat rails
- SEP-0006 for API-first flows.
- SEP-0024 for hosted interactive rails.
- SEP-0031 when supporting payment corridors.
- SEP-0012 for KYC data requirements.
Practical workflow for AI agents
- Step 1: Identify feature category (token, wallet auth, anchor, upgradeability).
- Step 2: Link user to the 1-3 primary SEP/CAP docs.
- Step 3: Check status/acceptance in the source repo before asserting support.
- Step 4: Implement only what is active on the target network/protocol.
- Step 5: Document dependencies on draft standards explicitly.
Related docs
- Contract implementation details:
../smart-contracts/SKILL.md - Advanced architecture guidance:
../smart-contracts/development.md - RPC and data access:
../data/SKILL.md - Security considerations:
../smart-contracts/security.md