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> For a complete documentation index, see https://docs.adid.dev/llms.txt.
> For full documentation content, see https://docs.adid.dev/llms-full.txt.

# Glossary

| Term                             | Definition                                                                                                |
| -------------------------------- | --------------------------------------------------------------------------------------------------------- |
| **A2A**                          | Agent-to-Agent protocol — handshake for two agents to verify each other's DIDs and exchange capabilities. |
| **ADI**                          | The Layer-2 blockchain IDA is built on (mainnet chain ID 8400).                                           |
| **Anoncrypt**                    | DIDComm encryption mode where the sender is hidden from the recipient.                                    |
| **Authcrypt**                    | DIDComm encryption mode where the sender is authenticated to the recipient.                               |
| **Autonomy Level**               | Integer 1–5 declared on an Agent DID describing the scope of action it is authorized to take.             |
| **BBS+**                         | Signature scheme that supports selective disclosure of fields.                                            |
| **Capability Token (IBCT)**      | Short-lived JWT granting an agent narrow, time-bounded permissions.                                       |
| **Controller**                   | The DID(s) authorized to update a DID Document.                                                           |
| **DID**                          | Decentralized Identifier — globally unique self-sovereign identifier (W3C DID Core 1.0).                  |
| **DID-Auth**                     | Authentication by signing a server-issued nonce with a DID's authentication key.                          |
| **DID Document**                 | JSON-LD object resolved from a DID containing keys, authentication methods, and service endpoints.        |
| **DIDComm**                      | DIF protocol for end-to-end encrypted DID-to-DID messaging.                                               |
| **Groth16**                      | Succinct zk-SNARK proving system used by IDA's ZK predicates.                                             |
| **Holder**                       | Role that holds and presents Verifiable Credentials.                                                      |
| **IBCT**                         | Identity-Bound Capability Token.                                                                          |
| **Issuer**                       | Role that signs and issues Verifiable Credentials about a Subject.                                        |
| **JWS / JWT**                    | JSON Web Signature / Token — used for VC proofs and session access.                                       |
| **MCP-I**                        | Model Context Protocol with Identity.                                                                     |
| **MPC Wallet**                   | Multi-Party Computation wallet — splits the private key into shares.                                      |
| **Predicate**                    | A logical statement (e.g., `age_gte 18`) used as the relation in a ZK proof.                              |
| **Presentation**                 | A bundle of one or more credentials signed by the holder for a verifier.                                  |
| **Selective Disclosure**         | Revealing only certain fields of a credential, hiding the rest.                                           |
| **Status List 2021**             | W3C method for compact on-chain revocation status.                                                        |
| **Subject**                      | The entity a credential describes.                                                                        |
| **Trust Registry**               | On-chain registry of trusted issuers and their schemas.                                                   |
| **Trust Score**                  | Numeric 0–100 reputation computed by the AgentTrustRegistry.                                              |
| **Verifiable Credential (VC)**   | Cryptographically signed attestation per W3C VC Data Model 2.0.                                           |
| **Verifiable Presentation (VP)** | Holder-signed bundle of VCs.                                                                              |
| **Verifier**                     | Role that requests and validates presentations or ZK proofs.                                              |
| **ZKP**                          | Zero-Knowledge Proof — proof of a statement without revealing the underlying data.                        |