io.github.j7an/nexus-mcp
PYPI · NEXUS-MCP
Delegate tasks to coding agents (Claude, Codex, Antigravity) from any MCP client
Available components
Last scanned (20 hours ago)
Scores higher than 80% of PyPI servers
Category Developer Tools
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 Security50
- Malware scan not yet available for this package.Unverified
- No known CVEs affecting this package version or its production dependencies.Pass
- Runs hatchling.build at install time, a recognised build step with no custom scripting around it. View diagnostics → Pass
- 1 of 18 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to j7an/nexus-mcp). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 10 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability73
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (fair).Partial
- Tool/resource definitions use about 218 tokens (~109/item across 2 items; 1 tools + 1 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
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
- 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 1 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (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.
- 30 Oct 26 −15
- Malware scan: pass → unverified ▼ security
- 26 Oct 26 +1
- Stability: 0.97 → pass security
- 25 Oct 26 +28
- Malware scan: unverified → pass ▲ security
- Stability: fail → 0.97 functional
- 24 Oct 26 −15
- GHSA-vqqp-x5qm-5qp4 affects this package: medium ▼ security
- GHSA-7xgj-8392-5q4r affects this package: medium ▼ security
- Malware scan: pass → unverified ▼ security
- Known CVEs: pass → fail ▼ security
- Package version: 2.1.2 → 2.1.3 functional
- 20 Oct 26 −1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 3.
- 17 Oct 26 +1
- Package version: 2.1.1 → 2.1.2 functional
- 15 Oct 26 −1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 0.
- 14 Oct 26 +15
- Malware scan: unverified → 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 4 Nov 2026 · Analysed pypi/nexus-mcp@2.1.3
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 | pypi |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | j7an/nexus-mcp |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/j7an/nexus-mcp/.github/workflows/release.yml@refs/tags/v2.1.3 |
| Rekor log index | 3442663928 |
| Predicate type | PyPI publish attestation https://docs.pypi.org/attestations/publish/v1 |
| Subject digest | sha256:0fd7f8c3fe55c2de2990f4b94a0057b15e3df7a5196e479c50dd7fd48fe9516c |
Background: How many MCP packages publish verified provenance →
Install scripts 1 script
| Hook | Tier | Command |
|---|---|---|
| build_backend | allowlisted | hatchling.build |
Background: Why install scripts are a supply-chain risk →
Dependencies 18 packages
| Packages resolved | 18 |
|---|---|
| Stale | 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 →
prompt Prompt ~126
Run one turn with a coding agent and return its final answer.
| Name | Type | Req | Description |
|---|---|---|---|
| backend | string | yes | Agent to run. |
| cwd | string | yes | Absolute path of the project directory. |
| fork | boolean | – | Branch session_id into a new conversation instead of continuing it. |
| model | – | – | Model id or alias; the provider default when omitted. |
| profile | string | – | Permission profile for the agent. |
| prompt | string | yes | Task for the agent. |
| session_id | – | – | Continue this conversation (from a previous result). |
| timeout | integer | – | Seconds before the turn is cancelled. |
| Name | Type | Req | Description |
|---|---|---|---|
| backend | string | yes | – |
| output | string | yes | – |
| session_id | string | yes | – |
| usage | – | – | – |
No examples provided.
How do I install the io.github.j7an/nexus-mcp server?
io.github.j7an/nexus-mcp runs locally as a PyPI package, launched with uvx nexus-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
pypi · nexus-mcp
claude mcp add j7an-nexus-mcp -- uvx nexus-mcp
What is the io.github.j7an/nexus-mcp server?
io.github.j7an/nexus-mcp is listed in the public MCP registry as io.github.j7an/nexus-mcp. Delegate tasks to coding agents (Claude, Codex, Antigravity) from any MCP client. This page covers its PyPI package (nexus-mcp).
Is the io.github.j7an/nexus-mcp server safe to use?
io.github.j7an/nexus-mcp scores 80 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 4 November 2026. 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.j7an/nexus-mcp server expose?
io.github.j7an/nexus-mcp exposes 1 tool: prompt. Their descriptions and schemas cost roughly 126 tokens of context every time the server is loaded.
Is the io.github.j7an/nexus-mcp server still maintained?
io.github.j7an/nexus-mcp is still listed as active in the MCP registry. We last reached this channel on 4 November 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.j7an/nexus-mcp server under?
io.github.j7an/nexus-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.