# io.github.zktx-mcp/littlejohn-mcp (npm · @zktx.io/littlejohn-mcp)

Local Robinhood Chain MCP and transaction review runtime.

- Trust score: 70/100 (medium)
- Change this week: +27
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- npm · `@zktx.io/littlejohn-mcp`: 70/100 (this document), [markdown](https://verifymcp.io/servers/zktx-mcp-littlejohn-mcp/zktx-io-littlejohn-mcp.md), [page](https://verifymcp.io/servers/zktx-mcp-littlejohn-mcp/zktx-io-littlejohn-mcp)

## Channel facts

- Registry: `npm`
- Package: `@zktx.io/littlejohn-mcp`
- Version: `0.0.5`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, 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 2026-10-18.

- **Supply Chain Security**: 80/100
  - No malware found by supply-chain analysis.
  - CVE check failed: a known high-severity CVE affects @modelcontextprotocol/sdk 1.30.0, a direct dependency. A fixed version is available.
  - No install/post-install scripts declared.
  - 92 of 265 dependencies flagged as unhealthy (1 deprecated).
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to zktx-mcp/littlejohn-mcp).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 3 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 57/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 1425 tokens (~47/item across 30 items; 30 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 30 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 31 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the io.github.zktx-mcp/littlejohn-mcp server?

io.github.zktx-mcp/littlejohn-mcp runs locally as an npm package, launched with npx -y @zktx.io/littlejohn-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add zktx-mcp-littlejohn-mcp -- npx -y @zktx.io/littlejohn-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "zktx-mcp-littlejohn-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@zktx.io/littlejohn-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "zktx-mcp-littlejohn-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@zktx.io/littlejohn-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add zktx-mcp-littlejohn-mcp -- npx -y @zktx.io/littlejohn-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "zktx-mcp-littlejohn-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@zktx.io/littlejohn-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add zktx-mcp-littlejohn-mcp --command npx --arg -y --arg @zktx.io/littlejohn-mcp
```

### Hermes

```yaml
mcp_servers:
  zktx-mcp-littlejohn-mcp:
    command: "npx"
    args: ["-y", "@zktx.io/littlejohn-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "zktx-mcp-littlejohn-mcp": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@zktx.io/littlejohn-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add zktx-mcp-littlejohn-mcp -t stdio -c npx -a -y @zktx.io/littlejohn-mcp
```

### Other

```json
{
  "mcpServers": {
    "zktx-mcp-littlejohn-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@zktx.io/littlejohn-mcp"
      ]
    }
  }
}
```

## 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.

### 2026-10-18 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 0 to 3. That category is still filling its 30-day observation window: 0 days of observed history at the previous scan, 1 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-17 (score 69, +26)

- [security improvement] Injection markers: unverified → pass
- [security] First check of Judged manipulation: pass
- [functional regression] Security disclosure: fail → unverified
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] Stability: unverified → 0.00
- [functional improvement] MCP protocol: unverified → pass
- [functional] First check of Tool coverage: 0
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: fair
- [functional] First check of Destructive annotations: pass
- [functional] First check of Schema quality: pass
- [functional] First check of Tool coverage: 100

### 2026-10-15 (score 43, 0)

- [functional] Package version: 0.0.4 → 0.0.5

### 2026-10-14 (score 43, 0)

- [security] Stability: Stability not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no schema to compare.
- [security] Tool safety: Tool safety not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no tool text to scan.
- [functional] Schema quality: Schema quality not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no schema to assess.
- [functional] Capabilities: Protocol version not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we never saw its MCP handshake.
- [functional] Tool coverage: Tool coverage not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no tool definitions to assess.

### 2026-10-13 (score 43, 0)

- [functional regression] Security disclosure: unverified → fail
- [functional] Package version: 0.0.3 → 0.0.4

### 2026-10-12 (score 43, 0)

- [functional regression] Security disclosure: fail → unverified
- [functional] Package version: 0.0.2 → 0.0.3

### 2026-10-08 (score 43)

First indexed and scored.

## MCP tools (30)

### `account_list_assets` (~56 tokens)

List native and selected-token assets for one selected account. A first page replaces the bounded Official Asset snapshot and may initialize defaults for an already retained account.

Input parameters:

- `account` (required)
- `cursor`
- `limit` (integer)

### `activity_get_transaction` (~37 tokens)

Read the stored transaction and its actual result without a network lookup.

Input parameters:

- `account` (object, required)
- `transactionHash` (string, required)

### `activity_inspect_transaction` (~50 tokens)

Explicitly re-read one transaction and receipt within a finite wait and update its ledger. This cannot resend or replace a transaction.

Input parameters:

- `account` (object, required)
- `transactionHash` (string, required)

### `activity_list_transactions` (~31 tokens)

List the account's recorded transactions without network work.

Input parameters:

- `account` (object, required)
- `cursor` (required)

### `exchange_get_review` (~30 tokens)

Read one live transaction decision; consumed or expired material is unavailable.

Input parameters:

- `operationId` (string, required)

### `exchange_start_review` (~61 tokens)

Create a temporary USDG/Stock Token transaction Review without publishing a card. This may update derived Wallet state and read prior known results; it never sends a transaction. Quantities are token units, not shares. Use explicit decision publication to display the original Review.

### `market_get_stock_token_prices` (~56 tokens)

Read current on-chain Stock Token/USDG pool spot prices and fees for the returned candidates. Supply a symbol or exact token address. This is not every pool, a USD valuation, an execution quote or a best-price selection.

### `market_get_stock_token_trade_history` (~69 tokens)

Read finalized Stock Token/USDG trades for one requested period. A partial position with a candle retains the full stored natural interval and may include activity outside represented request bounds; only a complete position with no candle establishes no qualifying Swap.

Input parameters:

- `period`
- `symbol` (string, required)

### `market_list_stock_tokens` (~30 tokens)

List the current official Stock Token catalog. Membership does not establish a USDG pool or current price.

### `presentation_get_card` (~49 tokens)

Read one exact saved card or immutable snapshot. Pending account selection may publish derived Wallet observation; an existing Wallet operation may settle its original expiry. This does not retrieve a signature or repeat a Wallet request.

### `presentation_get_result_part` (~107 tokens)

Read one exact immutable result part. First read the advertised resource URI for its descriptor and input. Fetch each chunk's parts in order, Base64-decode the bytes, verify total length and SHA-256, decode UTF-8 and JSON, and inspect the original result. Parts never contain a private Review, live decision, QR or signature and never create a card.

Input parameters:

- `index` (integer, required)
- `partIndex` (integer, required)
- `snapshotUri` (string, required)

### `presentation_get_snapshot` (~34 tokens)

Read one exact retained presentation descriptor and immutable data without creating a card or action controls.

Input parameters:

- `snapshotUri` (string, required)

### `read_get_account_balance` (~46 tokens)

Read exact native and token balances at one Robinhood Chain block.

Input parameters:

- `account` (required)
- `block` (required)
- `includeNative` (boolean, required)
- `tokens` (required)

### `read_get_chain_status` (~18 tokens)

Read the current Robinhood Chain status.

### `read_inspect_address` (~31 tokens)

Inspect address runtime code at one Robinhood Chain block.

Input parameters:

- `block` (required)
- `target` (required)

### `read_inspect_transaction` (~27 tokens)

Inspect one Robinhood Chain transaction and receipt.

Input parameters:

- `transactionHash` (string, required)

### `read_list_capabilities` (~17 tokens)

List the canonical read capability catalog.

### `signing_get_review` (~37 tokens)

Read one live signing decision. Consumed or expired data is unavailable; this never retrieves a signature.

Input parameters:

- `operationId` (string, required)

### `signing_start_review` (~75 tokens)

Create a temporary Review for exact UTF-8/hex personal data or EIP-712 typed data without publishing a card. Typed integers are decimal strings. Fresh observation may update derived Wallet state. Use explicit decision publication to display the original Review. This call cannot request a signature.

Input parameters:

- `account` (required)
- `payload` (required)

### `token_get_operation` (~25 tokens)

Read one exact durable token-selection operation.

Input parameters:

- `operationId` (string, required)

### `token_get_selection` (~30 tokens)

Read one token selection for the selected account.

Input parameters:

- `account` (required)
- `asset` (object, required)

### `token_inspect_contract` (~33 tokens)

Inspect one token contract at one Robinhood Chain block.

Input parameters:

- `asset` (object, required)
- `block` (required)

### `token_list_selections` (~37 tokens)

List token selections for the selected account.

Input parameters:

- `account` (required)
- `cursor` (string)
- `limit` (integer)

### `token_start_selection_change_review` (~72 tokens)

Create and retain one immutable token-selection change Review without publishing a card. An active target may update derived Wallet state. This call does not add or remove a token selection.

Input parameters:

- `account` (required)
- `asset` (object, required)
- `expectedRevision` (string)
- `kind` (string, required)

### `uniswap_v2_quote_exact_input` (~62 tokens)

Quote exact raw input across the declared Uniswap V2 routes.

Input parameters:

- `amountIn` (string, required)
- `block` (required)
- `factory` (string, required)
- `tokenIn` (object, required)
- `tokenOut` (object, required)

### `uniswap_v4_list_pools` (~44 tokens)

Refresh official asset membership and list the packaged USDG pool candidates. This does not establish current liquidity or execution.

Input parameters:

- `stockTokenAddress` (string, required)

### `wallet_get_account_selection` (~55 tokens)

Read eligible Robinhood accounts and the effective account for new requests. Fresh observation may update derived connection state and invalidate an unavailable preference; this does not select an account or change Wallet permissions.

Input parameters:

- `chainId` (string, required)

### `wallet_get_connection` (~41 tokens)

Read the observed WalletConnect session state for Robinhood Chain. This may retain observed accounts or invalidate an unavailable local preference; it does not start a Wallet request.

### `wallet_get_operation` (~30 tokens)

Read one exact durable Wallet operation and settle its expiry when due.

Input parameters:

- `operationId` (string, required)

### `wallet_start_connection_change_review` (~56 tokens)

Create and retain one Wallet connection-change Review and its exact target facts without publishing a card. Fresh observation may update derived connection state. This call does not accept a connection or disconnection decision.

Input parameters:

- `kind` (string, required)

## Diagnostics

Captured diagnostic sections: Provenance, Vulnerabilities, Dependencies. The full working is on the page: https://verifymcp.io/servers/zktx-mcp-littlejohn-mcp/zktx-io-littlejohn-mcp#diagnostics

## Score history

- 2026-10-18: 70
- 2026-10-17: 69
- 2026-10-16: 43
- 2026-10-15: 43
- 2026-10-14: 43
- 2026-10-13: 43
- 2026-10-12: 43
- 2026-10-08: 43

## Common questions

### What is the io.github.zktx-mcp/littlejohn-mcp server?

io.github.zktx-mcp/littlejohn-mcp is listed in the public MCP registry as io.github.zktx-mcp/littlejohn-mcp. Local Robinhood Chain MCP and transaction review runtime. This page covers its npm package (@zktx.io/littlejohn-mcp).

### Is the io.github.zktx-mcp/littlejohn-mcp server safe to use?

io.github.zktx-mcp/littlejohn-mcp scores 70 out of 100 on VerifyMCP. We recorded 1 known advisory against it as of 18 October 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the io.github.zktx-mcp/littlejohn-mcp server expose?

io.github.zktx-mcp/littlejohn-mcp exposes 30 tools: account_list_assets, activity_get_transaction, activity_inspect_transaction, activity_list_transactions, exchange_get_review, and 25 more. Their descriptions and schemas cost roughly 1,346 tokens of context every time the server is loaded.

### Is the io.github.zktx-mcp/littlejohn-mcp server still maintained?

io.github.zktx-mcp/littlejohn-mcp is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the io.github.zktx-mcp/littlejohn-mcp server under?

io.github.zktx-mcp/littlejohn-mcp declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@zktx.io/littlejohn-mcp
- Socket report: https://socket.dev/npm/package/@zktx.io/littlejohn-mcp
- Repository: https://github.com/zktx-mcp/littlejohn-mcp
- Changelog RSS feed: https://verifymcp.io/servers/zktx-mcp-littlejohn-mcp/zktx-io-littlejohn-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/zktx-mcp-littlejohn-mcp/zktx-io-littlejohn-mcp.json
- HTML version of this page: https://verifymcp.io/servers/zktx-mcp-littlejohn-mcp/zktx-io-littlejohn-mcp