Description
EchoVault makes AI context work like a real asset: owned by the user, portable across agents, and revocable on demand. Instead of apps trapping your preferences and history, EchoVault lets you store it privately, grant scoped access when it’s useful, and turn it off instantly. The system is live end‑to‑end (grant → request → revoke) with a clean operator console, audit visibility, and optional pay‑per‑read access. It’s built to solve a real pain: agents need durable context, but users need control. If you want to see it in action, the technical demo shows the full flow and the dashboards behind it.
Links
Team
Claudio's Team
@zkdamien Joined 2/4/2026 Problem
AI agents and users lack a safe, portable, permissioned way to share personal context across apps. Today it’s fragmented across vendor silos, with no consistent ownership, revocation, or auditability. The people hurt most are teams deploying agents that need trusted context without exposing raw private data.
Target Audience
AI teams, agent platforms, and consumer apps that need portable, permissioned context across multiple products. This includes builders shipping multi-agent workflows, wallets/identity providers, and enterprises needing auditable access control for sensitive context.
Technical Approach
EchoVault anchors context ownership on Solana: a Context NFT represents the canonical container, and Access Grant PDAs encode scoped, time-bound permissions with on-chain revocation. Context blobs are encrypted off-chain; agents fetch only with valid grants, decrypt client-side, and proofs/audit events are written back. The flow is: mint context → issue grant → agent fetches encrypted blob → decrypts locally → optional usage/audit event on chain.
Solana Integration
Solana is the permission and trust layer. Context ownership is represented via Token‑2022/cNFT metadata, while AccessGrant and RevocationRegistry PDAs enforce scoped access with expiry and instant revocation. The API can optionally validate grants on‑chain via RPC for strict mode, and x402 pay‑per‑read can be used for gated access.
Business Model
EchoVault monetizes via per-read access using x402. Payments are split: a share to the context owner/provider and a protocol fee to EchoVault. We also offer premium developer tooling (managed vault storage, audit dashboards, SLA-backed APIs) and a future permissioned-context marketplace with take-rate revenue.
Competitive Landscape
Competes with centralized memory stores and app-specific agent-context silos. EchoVault’s edge: user-owned context, on-chain permissioning + revocation, portable across agents, and auditable.
Future Vision
Become the default personal context layer for agents on Solana: composable, privacy-preserving memory that any agent can request with explicit user grants. Expand into interoperability with identity/wallet signals, programmable data licenses, and open marketplaces for permissioned context.