io.github.zktx-mcp/littlejohn-mcp
NPM · @ZKTX.IO/LITTLEJOHN-MCP
Local Robinhood Chain MCP and transaction review runtime.
Available components
Last scanned (3 hours ago)
Scores higher than 40% of npm servers
Category Crypto and Web3
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. How we score → Why this is hard to score →
Supply Chain Security80
- No malware found by supply-chain analysis.Pass
- CVE check failed: a known high-severity CVE affects @modelcontextprotocol/sdk 1.30.0, a direct dependency. A fixed version is available. View diagnostics → Fail
- No install/post-install scripts declared.Pass
- 92 of 265 dependencies flagged as unhealthy (1 deprecated). View diagnostics → Partial
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to zktx-mcp/littlejohn-mcp). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 3 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability57
- AI-judged instruction clarity (fair).Partial
- Tool/resource definitions use about 1425 tokens (~47/item across 30 items; 30 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management3
- Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 30 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 31 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 18 Oct 26 +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.
- 17 Oct 26 +26
- Injection markers: unverified → pass ▲ security
- First check of Judged manipulation: pass security
- Security disclosure: fail → unverified ▼ functional
- Tool coverage: unverified → 100 ▲ functional
- Stability: unverified → 0.00 ▲ functional
- 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 functional
- 15 Oct 26 0
- Package version: 0.0.4 → 0.0.5 functional
- 14 Oct 26 0
- 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. security
- 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. functional
- 13 Oct 26 0
- Security disclosure: unverified → fail ▼ functional
- Package version: 0.0.3 → 0.0.4 functional
- 12 Oct 26 0
- Security disclosure: fail → unverified ▼ functional
- Package version: 0.0.2 → 0.0.3 functional
- 8 Oct 26 43
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 18 Oct 2026 · Analysed npm/@zktx.io/littlejohn-mcp@0.0.5
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | zktx-mcp/littlejohn-mcp |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/zktx-mcp/littlejohn-mcp/.github/workflows/publish.yml@refs/tags/v0.0.5 |
| Rekor log index | 3254869046 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:02f3ba4adfdb0ae044983595416e5ce3e43e0e4215294c113db039289c9a8b66ff30b74ac7690cac64511ba8dc8b40308cb7576d83bd58615d53b2628 |
Background: How many MCP packages publish verified provenance →
Vulnerabilities 1 finding
| ID | CVE | Severity | Vector | Fix available |
|---|---|---|---|---|
| GHSA-6qxp-vccf-f47h | CVE-2026-104850 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | yes |
Background: What a vulnerability scan can and cannot prove →
Dependencies 265 packages
| Packages resolved | 265 |
|---|---|
| Deprecated | 1 |
| Stale | 91 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
account_list_assets ~56
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.
| Name | Type | Req | Description |
|---|---|---|---|
| account | – | yes | – |
| cursor | – | – | – |
| limit | integer | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
activity_get_transaction ~37
Read the stored transaction and its actual result without a network lookup.
| Name | Type | Req | Description |
|---|---|---|---|
| account | object | yes | – |
| transactionHash | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
activity_inspect_transaction ~50
Explicitly re-read one transaction and receipt within a finite wait and update its ledger. This cannot resend or replace a transaction.
| Name | Type | Req | Description |
|---|---|---|---|
| account | object | yes | – |
| transactionHash | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
activity_list_transactions ~31
List the account's recorded transactions without network work.
| Name | Type | Req | Description |
|---|---|---|---|
| account | object | yes | – |
| cursor | – | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
exchange_get_review ~30
Read one live transaction decision; consumed or expired material is unavailable.
| Name | Type | Req | Description |
|---|---|---|---|
| operationId | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
exchange_start_review ~61
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.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
market_get_stock_token_prices ~56
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.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
market_get_stock_token_trade_history ~69
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.
| Name | Type | Req | Description |
|---|---|---|---|
| period | – | – | – |
| symbol | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
market_list_stock_tokens ~30
List the current official Stock Token catalog. Membership does not establish a USDG pool or current price.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
presentation_get_card ~49
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.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
presentation_get_result_part ~107
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.
| Name | Type | Req | Description |
|---|---|---|---|
| index | integer | yes | – |
| partIndex | integer | yes | – |
| snapshotUri | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
presentation_get_snapshot ~34
Read one exact retained presentation descriptor and immutable data without creating a card or action controls.
| Name | Type | Req | Description |
|---|---|---|---|
| snapshotUri | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
read_get_account_balance ~46
Read exact native and token balances at one Robinhood Chain block.
| Name | Type | Req | Description |
|---|---|---|---|
| account | – | yes | – |
| block | – | yes | – |
| includeNative | boolean | yes | – |
| tokens | – | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
read_get_chain_status ~18
Read the current Robinhood Chain status.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
read_inspect_address ~31
Inspect address runtime code at one Robinhood Chain block.
| Name | Type | Req | Description |
|---|---|---|---|
| block | – | yes | – |
| target | – | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
read_inspect_transaction ~27
Inspect one Robinhood Chain transaction and receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| transactionHash | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
read_list_capabilities ~17
List the canonical read capability catalog.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
signing_get_review ~37
Read one live signing decision. Consumed or expired data is unavailable; this never retrieves a signature.
| Name | Type | Req | Description |
|---|---|---|---|
| operationId | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
signing_start_review ~75
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.
| Name | Type | Req | Description |
|---|---|---|---|
| account | – | yes | – |
| payload | – | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
token_get_operation ~25
Read one exact durable token-selection operation.
| Name | Type | Req | Description |
|---|---|---|---|
| operationId | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
token_get_selection ~30
Read one token selection for the selected account.
| Name | Type | Req | Description |
|---|---|---|---|
| account | – | yes | – |
| asset | object | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
token_inspect_contract ~33
Inspect one token contract at one Robinhood Chain block.
| Name | Type | Req | Description |
|---|---|---|---|
| asset | object | yes | – |
| block | – | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
token_list_selections ~37
List token selections for the selected account.
| Name | Type | Req | Description |
|---|---|---|---|
| account | – | yes | – |
| cursor | string | – | – |
| limit | integer | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
token_start_selection_change_review ~72
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.
| Name | Type | Req | Description |
|---|---|---|---|
| account | – | yes | – |
| asset | object | yes | – |
| expectedRevision | string | – | – |
| kind | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
uniswap_v2_quote_exact_input ~62
Quote exact raw input across the declared Uniswap V2 routes.
| Name | Type | Req | Description |
|---|---|---|---|
| amountIn | string | yes | – |
| block | – | yes | – |
| factory | string | yes | – |
| tokenIn | object | yes | – |
| tokenOut | object | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
uniswap_v4_list_pools ~44
Refresh official asset membership and list the packaged USDG pool candidates. This does not establish current liquidity or execution.
| Name | Type | Req | Description |
|---|---|---|---|
| stockTokenAddress | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
wallet_get_account_selection ~55
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.
| Name | Type | Req | Description |
|---|---|---|---|
| chainId | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
wallet_get_connection ~41
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.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
wallet_get_operation ~30
Read one exact durable Wallet operation and settle its expiry when due.
| Name | Type | Req | Description |
|---|---|---|---|
| operationId | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
wallet_start_connection_change_review ~56
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.
| Name | Type | Req | Description |
|---|---|---|---|
| kind | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
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.
npm · @zktx.io/littlejohn-mcp
claude mcp add zktx-mcp-littlejohn-mcp -- npx -y @zktx.io/littlejohn-mcp
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.