io.github.tang-vu/keryx
NPM · KERYX-MCP · 2 COMPONENTS · SCANNED SEP 21
Autonomous research agent that pays every source it cites in USDC on Arc via x402 micropayments.
Available components
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 Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 32 of 112 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 81 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability80
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 185 tokens (~92/item across 2 items; 2 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management97
- Stability observed for 29 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 2 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
How do I install the io.github.tang-vu/keryx MCP server?
io.github.tang-vu/keryx runs locally as an npm package, launched with npx -y keryx-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 · keryx-mcp
claude mcp add tang-vu-keryx -- npx -y keryx-mcp
{
"mcpServers": {
"tang-vu-keryx": {
"command": "npx",
"args": [
"-y",
"keryx-mcp"
]
}
}
} {
"servers": {
"tang-vu-keryx": {
"command": "npx",
"args": [
"-y",
"keryx-mcp"
]
}
}
} codex mcp add tang-vu-keryx -- npx -y keryx-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"tang-vu-keryx": {
"type": "local",
"command": [
"npx",
"-y",
"keryx-mcp"
],
"enabled": true
}
}
} openclaw mcp add tang-vu-keryx --command npx --arg -y --arg keryx-mcp
mcp_servers:
tang-vu-keryx:
command: "npx"
args: ["-y", "keryx-mcp"] {
"McpServers": {
"tang-vu-keryx": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"keryx-mcp"
]
}
}
} assistant mcp add tang-vu-keryx -t stdio -c npx -a -y keryx-mcp
{
"mcpServers": {
"tang-vu-keryx": {
"command": "npx",
"args": [
"-y",
"keryx-mcp"
]
}
}
} 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.
- 20 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 18 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Sept 26 −3
- Stability: pass → 0.80 functional
- 15 Sept 26 +1
- Stability: 0.97 → pass security
- 13 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 9 Sept 26 −3
- Stability: pass → 0.80 functional
- 8 Sept 26 +1
- Stability: 0.97 → pass security
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 21 Sept 2026 · Analysed npm/keryx-mcp@0.1.1
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 112 packages
| Packages resolved | 112 |
|---|---|
| Stale | 31 |
| No linked repository | 1 |
| 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 →
ask_keryx Ask Keryx ~132
Ask Keryx — an autonomous research agent that buys paid sources under a budget, answers with inline citations, and pays each cited creator in USDC on Arc. Costs 0.02 USDC per call, paid from your own funded Arc-testnet wallet (run keryx_wallet_status first to fund it). Use when you want a grounded, source-cited answer AND the creators paid for their work.
| Name | Type | Req | Description |
|---|---|---|---|
| budget | number | – | Optional USDC budget Keryx may spend buying sources (default ~0.05). |
| question | string | yes | The research question to ask Keryx. |
No output schema declared.
No examples provided.
keryx_wallet_status Keryx wallet status ~53
Show the Arc-testnet wallet the Keryx MCP server pays from: address, balances, whether it's ready, and exactly how to fund it via the Circle faucet. Run this before ask_keryx.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
What is the io.github.tang-vu/keryx MCP server?
io.github.tang-vu/keryx is an MCP server listed in the public MCP registry as io.github.tang-vu/keryx. Autonomous research agent that pays every source it cites in USDC on Arc via x402 micropayments. This page covers its npm package (keryx-mcp).
Is the io.github.tang-vu/keryx MCP server safe to use?
io.github.tang-vu/keryx scores 84 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 21 September 2026. It declares no install or post-install scripts. 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.tang-vu/keryx MCP server expose?
io.github.tang-vu/keryx exposes 2 tools: ask_keryx, keryx_wallet_status. Their descriptions and schemas cost roughly 185 tokens of context every time the server is loaded.
Is the io.github.tang-vu/keryx MCP server still maintained?
io.github.tang-vu/keryx is still listed as active in the MCP registry. We last reached this channel on 21 September 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.tang-vu/keryx MCP server under?
io.github.tang-vu/keryx declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.