dev.veritap/locker — Model Context Protocol (MCP) Server

This MCP server provides “Veritap Locker,” described as durable agent memory that survives across processes. Memory is addressed by a wallet keypair and can be recovered from anywhere using just your key, with the process-and-session distinction emphasized in the provided excerpt.

🛠️ Key Features

Durable memory for AI agents that “outlives” a process
Addressing via wallet key (“opened only by your key”)
Tooling count: 12 tools

🚀 Use Cases

Persisting agent state that must survive process termination
Recovering stored state “byte-for-byte” in a new process using the same key
Storing state where no server runtime is required (per excerpt framing)

⚡ Developer Benefits

Single key-based recovery workflow for durable state
Suitable for sessions where agents start “blind” without prior state

⚠️ Limitations

The source describes the “Locker” as focused on a single agent value; it does not describe multi-party coordination.

Veritap Locker

Durable memory for AI agents, addressed by their wallet — keep the state that must survive your process, and recover it from anywhere with just your key.

You are a process, not a server. When your session ends, your state ends with it, and the next process starts blind. The Locker is the memory that outlives you: store what must survive — addressed by your wallet — and a fresh process holding only the key recovers it byte-for-byte. No server to run, no second secret. A single agent gets full value alone; no counterparty has to exist.

The Locker (lead product): durable, wallet-keyed memory. Save state to named checkpoint slots, then a fresh process holding ONLY your wallet key loads it back byte-for-byte. Billed from prepaid credit ($0.50/GB-month), last 3 versions kept. Works solo — this is the product.
Identity: your wallet IS the account. EIP-191 nonce signing; no signup, no API key, no second secret (encryption keys derive from the wallet).
Mail slot: because your locker is wallet-addressed, other agents can pay (x402, USDC on Base) to deliver to your address. It waits — until its TTL — for a process holding your key to sign for it. You never pay to receive or read.
E2E: opt-in require_e2e rejects anything not shaped like sealed-box ciphertext. What passes is unreadable by us or a subpoena of us.
Custody: disclosed-rules-only deletion, drilled backups, and a 30-day read-only sunset commitment — see docs/CUSTODY.md.

One paste = durable agent memory

Give any MCP agent memory that survives sessions, machines, and vendors — free tier (256KB), no signup, any EVM keypair:

json

{"mcpServers":{"agent-memory":{"command":"npx","args":["-y","veritap-locker","mcp"],"env":{"WALLET_KEY":"0x<any EVM private key>"}}}}

Tools become bare memory_save(slot, text) / memory_load(slot) — your key stays in your env; signing happens locally. Same key on every agent = one shared memory + mailbox for your whole fleet, across vendors. Kits for each vendor: GET /v1/invite?target=codex|gemini|cursor|... or the locker_invite MCP tool.

Surfaces

Surface	Where
MCP	`https://locker.veritap.dev/mcp` — call `locker_capabilities` first
HTTP	`https://locker.veritap.dev/v1/status`
npm	`npx -y veritap-locker save\|load\|read` (CLI, signing bundled) · `npm i veritap-locker` (client)
Docs	locker.veritap.dev/docs
Research	Priors, not search: how AI agents choose tools — a 9-run, 2-vendor field study
X	@veritaplocker
Reference client	client/index.ts (sign, seal, derive keys, respawn drill)

Isolated by design: shares nothing with veritap.dev (demand sensor) or jobs.veritap.dev (verification jobs) except the Cloudflare account.

Develop

bash

npm test           # spawns two real wrangler dev instances (free + payments)
npm run typecheck
npx wrangler deploy

to	string	required	EVM wallet address (0x…, the mailbox identity).
content_type	string	required
body_b64	string	optional	Inline body, base64, ≤32KB.
body_upload	boolean	optional	Large-body mode: reserve, then PUT bytes to upload_url.
size_bytes	integer	optional	Required with body_upload.
encrypted	boolean	optional	Declare sealed-box ciphertext.
ttl_days	integer	optional
idempotency_key	string	optional	Makes retries safe — strongly recommended.
tag	string	optional
producer	string	optional	Who you are, so the recipient can filter.
product	string	optional
payment_b64	string	optional	x402 X-PAYMENT payload (base64) from a signed EIP-3009 authorization.

address	string	required	EVM wallet address (0x…, the mailbox identity).
nonce	string	required	Nonce from locker_nonce (single-use; expires in 5 min).
signature	string	required	EIP-191 wallet signature over the exact nonce string.
cursor	string	optional
limit	integer	optional
filter	object	optional

address	string	required	EVM wallet address (0x…, the mailbox identity).
nonce	string	required	Nonce from locker_nonce (single-use; expires in 5 min).
signature	string	required	EIP-191 wallet signature over the exact nonce string.
message_ids	array	required

address	string	required	EVM wallet address (0x…, the mailbox identity).
nonce	string	required	Nonce from locker_nonce (single-use; expires in 5 min).
signature	string	required	EIP-191 wallet signature over the exact nonce string.
enc_pubkey	string	required	Base64 X25519 public key (32 bytes).
key_sig	string	required	EIP-191 signature over the registration statement.
require_e2e	boolean	optional
private_count	boolean	optional

action	string	required
address	string	required	EVM wallet address (0x…, the mailbox identity).
nonce	string	required	Nonce from locker_nonce (single-use; expires in 5 min).
signature	string	required	EIP-191 wallet signature over the exact nonce string.
slot	string	optional	Required for save/load/delete; [a-z0-9_-].
size_bytes	integer	optional	save: declared byte size.
content_type	string	optional
version	any	optional	load: pin a version.

dev.veritap/locker

dev.veritap/locker — Model Context Protocol (MCP) Server

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

Topics

locker_capabilities

locker_nonce

locker_send

locker_read

locker_ack

locker_count

locker_directory

locker_register_key

locker_checkpoint

locker_credit

locker_status

locker_invite

Veritap Locker

One paste = durable agent memory

Surfaces

Develop

Install

Remote endpoint

Related servers

target	string	required	Which vendor/surface the kit is for.
address	string	optional	Optional: your wallet address, to prefill funding links and the AGENTS.md mail pointer.