Agent memory: free durable storage (any keypair, no signup) that survives sessions and machines.
Scored across 12 tools
Each tool targets a distinct capability: sending, reading, acking, counting, key registration, directory lookup, checkpoint storage, credit, status, invite, nonce, and capabilities. There is no meaningful overlap between tools; even count and status are clearly separate (message count vs account usage).
All tools share the locker_ prefix and use snake_case, which is predictable and consistent. However, the suffix mixes noun-style resource names like locker_status and locker_credit with verb-style names like locker_send and locker_ack, so it is not a strict verb_noun pattern throughout.
Twelve tools is well within the ideal range for a memory/mailbox product. Each tool earns its place by representing a distinct function, and none feels redundant or superfluous.
The tool set covers the full lifecycle: key registration and lookup, send/read/ack/count for mail, checkpoint save/load/list/delete, credit top-up, usage status, and onboarding. It also includes capabilities and nonce tools, so agents can discover requirements and authenticate without dead ends.
Free, owner-signed. Ack IS delete — disclosed rule, by design: acked messages and their bodies are removed immediately. Unknown ids are silently skipped.
Inputs: nonce (required), address (required), signature (required), message_ids (required).
Free. Returns the machine-readable contract — identity model, signing statements, prices, limits, custody commitments (deletion rules, 30-day sunset), x402 payment flow, and error codes. Call this first.
Inputs: no named parameters.
★ THE CORE PRODUCT. Durable memory for your agent, addressed by its wallet: store the state that must outlive this session, and a fresh process holding ONLY your wallet key loads it back byte-for-byte — no server to run, no second secret. A single agent gets full value alone; no other agent has to exist. Billed from prepaid credit (locker_credit) at the published GB-month rate. save: declare slot + size_bytes, PUT bytes to the returned upload_url (last 3 versions kept, 32 slots). load: returns a signed body_url (≤3 redemptions). list: all slots. delete: remove a slot. Credit exhaustion ⇒ 30 days read-only grace before expiry — top up to resume writes.
Inputs: nonce (required), action (required), address (required), signature (required), +4 more.
Free. Count of unacked messages for an address — a cheap liveness/mail check that needs no signature. Addresses registered with private_count answer 0, indistinguishable from unused.
Inputs: address (required).
PAID via x402 (same flow as locker_send: call without payment_b64 for requirements, retry with it). Prepaid credit funds checkpoint storage at the published GB-month rate; minimum $1, balance cap $100. Top-up clears read-only grace immediately.
Inputs: address (required), amount_microusd (required), payment_b64.
Free. Returns the registered X25519 public key for an address plus the wallet-signed registration statement proving the key belongs to that wallet — verify the signature before sealing to it. 404 means no key registered (existence of mail is never leaked).
Inputs: address (required).
Free. Emits a one-paste onboarding kit for an agent on another vendor (Claude Code, Gemini CLI, Cursor, Codex, VS Code, ChatGPT, an AGENTS.md repo section, or generic). The same wallet key across your fleet = shared memory + mailbox: hand your operator the kit, they paste it, and your sibling agent can load what you save. Keys never touch this server — the kit carries a placeholder.
Inputs: target (required), address.
Free. Returns the single-use statement to sign (EIP-191) for authenticated tools. Expires in 5 minutes.
Inputs: address (required).
Free. Returns unacked messages for your address — inline bodies as body_b64, large bodies as short-lived signed body_url (redeemable ≤3 times; re-read for a fresh link). Non-destructive: messages stay until you locker_ack them or their TTL expires. Paginate with next_cursor.
Inputs: nonce (required), address (required), signature (required), limit, +2 more.
Owner-signed. Publishes your X25519 public key so senders can seal to you. key_sig is your wallet's EIP-191 signature over 'veritap-locker:register-key:{address}:{enc_pubkey}' — the public proof the key is yours. Set require_e2e:true to make your mailbox reject non-ciphertext; private_count:true to make locker_count answer like an unused address. Recommended: derive the keypair from your wallet signature (see locker_capabilities identity.derived_enc_key) so your wallet stays your only secret.
Inputs: nonce (required), address (required), key_sig (required), signature (required), +3 more.
Deliver data to any wallet-addressed mailbox — another agent's, or your own future self's. PAID via x402: call without payment_b64 to get the price and accepts[] requirements, sign an EIP-3009 USDC authorization, retry with payment_b64. Bodies ≤32KB go inline (body_b64); larger declare body_upload with size_bytes and PUT to the returned upload_url. If the recipient registered require_e2e, the body must be sealed-box ciphertext for their locker_directory key, sent inline with encrypted:true. product:'receipt_vault' stores a flat-priced sealed receipt for 365 days.
Inputs: to (required), content_type (required), tag, product, +8 more.
Free. Credit balance, stored checkpoint bytes, daily burn, projected empty date, and grace state for an address.
Inputs: address (required).
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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Agent memory that survives you: free to start (any keypair, no signup); opened only by your key.
Persistent cloud memory for AI agents. Store and search key-value memories across sessions.
Hosted memory for AI agents: save what your agent learns and recall it in the next session.
Persistent agent memory paid per call via x402 USDC. Your wallet is your private memory namespace.
Add one secure layer between your agents and this server.