mcp-authprobe
NPM · MCP-AUTHPROBE
Active OAuth tests for remote MCP servers you own: tokens, PKCE, redirect_uri, audience, CSRF.
Available components
Last scanned (11 hours ago)
Scores higher than 69% of npm servers
Category Security
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 Security100
- 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
- 0 of 15 dependencies flagged as unhealthy. View diagnostics → Pass
Provenance & Transparency100
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to Enigmacker/mcp-authprobe). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 0 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability69
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 359 tokens (~71/item across 5 items; 5 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management13
- Stability observed for 4 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage83
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 50% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 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
Checks we ran (16)
- Malware scan
- Known CVEs
- Install scripts
- Dependency health
- Source repository
- Provenance
- License
- Maintenance
- Security disclosure
- Schema quality
- Stability
- Tool coverage
- Injection markers
- Destructive annotations
- Judged manipulation
- MCP protocol
Does not apply to this package (2)
- Endpoint SecurityScored on hosted endpoints only. A package has no live endpoint of its own for us to probe.
- Transport & ReachabilityScored on hosted endpoints only. A package has no live endpoint of its own for us to probe.
The score does not measure everything. What the score does not measure →
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.
- 5 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 4 Nov 26 0
- Stability: 0.07 → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- Package version: 0.7.0 → 0.8.0 functional
- 3 Nov 26 +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.
- 2 Nov 26 +11
- Known CVEs: unverified → pass ▲ security
- Dependency health: unverified → 1.00 ▲ functional
- 1 Nov 26 68
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 5 Nov 2026 · Analysed npm/mcp-authprobe@0.8.0
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 | Enigmacker/mcp-authprobe |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/Enigmacker/mcp-authprobe/.github/workflows/release.yml@refs/tags/v0.8.0 |
| Rekor log index | 3692050058 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:b1c11f85b4492dc984c7252dafece15ae7d1f8a20a6b2eac2e0eeb507868f291eb7515d0009aefb495b6d5c323f33dba00a4c13acb21970231fa3c28b |
Background: How many MCP packages publish verified provenance →
Dependencies 15 packages
| Packages resolved | 15 |
|---|---|
| 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 →
explain_check Explain a check ~32
Explain one check: why it matters, how to fix a failure, and references.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | – |
No output schema declared.
No examples provided.
list_checks List checks ~26
List every check with its ID, severity, mode (active or passive) and availability.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
ownership_proof Ownership proof to publish ~49
Return the ownership proof the user must publish for a host (well-known file or DNS TXT record) before active tests can run. The secret itself is never returned.
| Name | Type | Req | Description |
|---|---|---|---|
| host | string | yes | – |
No output schema declared.
No examples provided.
scan Scan a remote MCP server ~148
Run discovery and, on hosts with a valid ownership proof, the active authorization tests against a remote MCP server URL. Active tests register and delete temporary OAuth clients and CONSUME the configured test grant. Only use on servers the user owns or is authorized to test, after the user confirmed.
| Name | Type | Req | Description |
|---|---|---|---|
| only | string | – | Run only these checks: comma-separated IDs (MAP-RDR01 or RDR01) or families (RDR) |
| skip | string | – | Do not run these checks (same syntax; wins over only), e.g. THR to avoid failed token requests |
| url | string | yes | The MCP endpoint URL, e.g. https://mcp.example.com/mcp |
No output schema declared.
No examples provided.
verify_ownership Verify ownership proof ~32
Check whether the ownership proof for a host is published and matches the configured secret.
| Name | Type | Req | Description |
|---|---|---|---|
| host | string | yes | – |
No output schema declared.
No examples provided.
How do I install the mcp-authprobe server?
mcp-authprobe runs locally as an npm package, launched with npx -y mcp-authprobe 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 · mcp-authprobe
claude mcp add enigmacker-mcp-authprobe -- npx -y mcp-authprobe mcp
What is the mcp-authprobe server?
mcp-authprobe is listed in the public MCP registry as io.github.Enigmacker/mcp-authprobe. Active OAuth tests for remote MCP servers you own: tokens, PKCE, redirect_uri, audience, CSRF. This page covers its npm package (mcp-authprobe).
Is the mcp-authprobe server safe to use?
mcp-authprobe scores 81 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 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 mcp-authprobe server expose?
mcp-authprobe exposes 5 tools: list_checks, explain_check, ownership_proof, verify_ownership, scan. Their descriptions and schemas cost roughly 287 tokens of context every time the server is loaded.
Is the mcp-authprobe server still maintained?
mcp-authprobe is still listed as active in the MCP registry. We last reached this channel on 5 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 mcp-authprobe server under?
mcp-authprobe declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.
What did VerifyMCP test on the mcp-authprobe server?
VerifyMCP ran 16 checks on mcp-authprobe, covering Malware scan, Known CVEs, Install scripts, Dependency health and 12 more. Endpoint Security and Transport & Reachability do not apply to an npm package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.