# dev.veritap/locker (remote · locker.veritap.dev)

Durable wallet-addressed memory for AI agents: state that survives your process, opened by your key.

- Trust score: 59/100 (low)
- Change this week: +2
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-21

## Components

- remote · `locker.veritap.dev`: 59/100 (this document), [markdown](https://verifymcp.io/servers/dev-veritap-locker/locker.md), [page](https://verifymcp.io/servers/dev-veritap-locker/locker)

## Channel facts

- Endpoint: `https://locker.veritap.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.2`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-21.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 11 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 68/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1638 tokens (~148/item across 11 items; 11 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 89/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 68% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### Claude

```bash
claude mcp add --transport http dev-veritap-locker https://locker.veritap.dev/mcp
```

### Codex

```toml
[mcp_servers.dev-veritap-locker]
url = "https://locker.veritap.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-veritap-locker": {
      "type": "remote",
      "url": "https://locker.veritap.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dev-veritap-locker --url https://locker.veritap.dev/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  dev-veritap-locker:
    url: "https://locker.veritap.dev/mcp"
```

### Other

```json
{
  "mcpServers": {
    "dev-veritap-locker": {
      "type": "http",
      "url": "https://locker.veritap.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-20 (score 59, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “locker_checkpoint” rewrote its description, which is the text the model reads
- [functional] Schema quality: excellent → good
- [cosmetic] Tool “locker_checkpoint” changed its title: Checkpoint storage: save/load/list/delete (owner-signed) → The Locker — durable memory that survives your process (save/load/list/delete)

### 2026-08-19 (score 59, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-16 (score 58, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-15 (score 57, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional improvement] Stability: unverified → 0.03

### 2026-08-14 (score 57)

First indexed and scored.

## MCP tools (11)

### `locker_capabilities` (~52 tokens)

The full locker contract: identity, prices, custody, payment

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.

### `locker_nonce` (~52 tokens)

Get a signing nonce

Free. Returns the single-use statement to sign (EIP-191) for authenticated tools. Expires in 5 minutes.

Input parameters:

- `address` (string, required): EVM wallet address (0x…, the mailbox identity).

### `locker_send` (~306 tokens)

Send a message to a wallet address (paid)

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.

Input parameters:

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

### `locker_read` (~148 tokens)

Read your mail (free, owner-signed, non-destructive)

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.

Input parameters:

- `address` (string, required): EVM wallet address (0x…, the mailbox identity).
- `cursor` (string)
- `filter` (object)
- `limit` (integer)
- `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.

### `locker_ack` (~105 tokens)

Acknowledge (= delete) read messages

Free, owner-signed. Ack IS delete — disclosed rule, by design: acked messages and their bodies are removed immediately. Unknown ids are silently skipped.

Input parameters:

- `address` (string, required): EVM wallet address (0x…, the mailbox identity).
- `message_ids` (array, required)
- `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.

### `locker_count` (~63 tokens)

Peek unacked message count (free, unauthenticated)

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.

Input parameters:

- `address` (string, required): EVM wallet address (0x…, the mailbox identity).

### `locker_directory` (~77 tokens)

Look up a recipient's encryption key (free)

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).

Input parameters:

- `address` (string, required): EVM wallet address (0x…, the mailbox identity).

### `locker_register_key` (~235 tokens)

Register your encryption key (and E2E policy)

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.

Input parameters:

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

### `locker_checkpoint` (~274 tokens)

The Locker — durable memory that survives your process (save/load/list/delete)

★ 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.

Input parameters:

- `action` (string, required)
- `address` (string, required): EVM wallet address (0x…, the mailbox identity).
- `content_type` (string)
- `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.
- `size_bytes` (integer): save: declared byte size.
- `slot` (string): Required for save/load/delete; [a-z0-9_-].
- `version`: load: pin a version.

### `locker_credit` (~100 tokens)

Top up storage credit (paid)

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.

Input parameters:

- `address` (string, required): EVM wallet address (0x…, the mailbox identity).
- `amount_microusd` (integer, required)
- `payment_b64` (string)

### `locker_status` (~49 tokens)

Your storage account status (free)

Free. Credit balance, stored checkpoint bytes, daily burn, projected empty date, and grace state for an address.

Input parameters:

- `address` (string, required): EVM wallet address (0x…, the mailbox identity).

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/dev-veritap-locker/locker#diagnostics

## Score history

- 2026-08-21: 59
- 2026-08-20: 59
- 2026-08-19: 59
- 2026-08-18: 58
- 2026-08-17: 58
- 2026-08-16: 58
- 2026-08-15: 57
- 2026-08-14: 57

## Links

- Remote endpoint: https://locker.veritap.dev/mcp
- Repository: https://github.com/veritap-dev/veritap-locker
- Website: https://locker.veritap.dev/
- Changelog RSS feed: https://verifymcp.io/servers/dev-veritap-locker/locker.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-veritap-locker/locker.json
- HTML version of this page: https://verifymcp.io/servers/dev-veritap-locker/locker