# passmcp (oci · ghcr.io/sebastienrousseau/passmcp-server) Evaluate an MCP server with passmcp and verify its attestations, from inside the agent. Read-only. - Trust score: 53/100 (low) - Change this week: −3 - Registry status: active - Liveness: live - Owner verified: no - Last scored: 2026-11-05 ## Components - oci · `ghcr.io/sebastienrousseau/passmcp-server`: 53/100 (this document), [markdown](https://verifymcp.io/servers/com-sebastienrousseau-passmcp-server/ghcr-io-sebastienrousseau-passmcp-server.md), [page](https://verifymcp.io/servers/com-sebastienrousseau-passmcp-server/ghcr-io-sebastienrousseau-passmcp-server) ## Channel facts - Registry: `oci` - Package: `ghcr.io/sebastienrousseau/passmcp-server` - Version: `0.0.8` - 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 2026-11-05. - **Supply Chain Security**: 0/100 - No malware scan is available for this kind of package: the supply-chain vendors we use do not cover it. This is a permanent gap in our coverage, not a finding about the package. - Known CVEs could not be checked: this image's dependency list comes from an SBOM its publisher attached, which nothing verifies, so we will not report it as a clean result. - Install-script risk not yet assessed. - Dependency health could not be checked: this image's dependency list comes from an SBOM its publisher attached. It names packages and versions but not whether each is deprecated, still maintained or linked to its source, so there is nothing we can fairly grade. - **Provenance & Transparency**: 48/100 - Source repository is publicly reachable at the declared URL. - Provenance check failed: no build-provenance attestation is published. - Clear OSI-approved license (GPL-3.0-only). - Actively maintained (last published 17 days ago). - Publishes a security disclosure policy (SECURITY.md). - **Schema Quality & AI Usability**: 80/100 - AI-judged instruction clarity (excellent). - Tool/resource definitions use about 381 tokens (~127/item across 3 items; 3 tools + 0 resources), lean. - Usage-examples check failed: none of the tools include examples. - **Stability & Change Management**: 80/100 - Stability observed for 24 of 30 days with no destabilising changes; credit accrues until the full window elapses. - **Tool Coverage**: 100/100 - 100% of tools have a non-trivial description (not blank, and not just the tool's name). - 100% 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 3 captured tool definition(s), and no name or description among them implies an irreversible operation. - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it. - **Capabilities**: 100/100 - Implements a current MCP spec version (2026-07-28). **Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm. ## Install ### How do I install the passmcp MCP server? passmcp runs locally as a container image, launched with docker run --rm -i -e PASSMCP_SERVER_ALLOW ghcr.io/sebastienrousseau/passmcp-server:0.0.8. Ready-made configuration for Claude, Cursor, VS Code, Codex and 3 more is on this page, copied from each client's own documentation. ### Claude ```bash claude mcp add com-sebastienrousseau-passmcp-server -- docker run --rm -i -e PASSMCP_SERVER_ALLOW ghcr.io/sebastienrousseau/passmcp-server:0.0.8 ``` This image reads PASSMCP_SERVER_ALLOW. Set it in your client's env block for this server; docker run -e passes it through to the container. ### Cursor ```json { "mcpServers": { "com-sebastienrousseau-passmcp-server": { "command": "docker", "args": [ "run", "--rm", "-i", "-e", "PASSMCP_SERVER_ALLOW", "ghcr.io/sebastienrousseau/passmcp-server:0.0.8" ] } } } ``` This image reads PASSMCP_SERVER_ALLOW. Set it in your client's env block for this server; docker run -e passes it through to the container. ### VS Code ```json { "servers": { "com-sebastienrousseau-passmcp-server": { "command": "docker", "args": [ "run", "--rm", "-i", "-e", "PASSMCP_SERVER_ALLOW", "ghcr.io/sebastienrousseau/passmcp-server:0.0.8" ] } } } ``` This image reads PASSMCP_SERVER_ALLOW. Set it in your client's env block for this server; docker run -e passes it through to the container. ### Codex ```bash codex mcp add com-sebastienrousseau-passmcp-server -- docker run --rm -i -e PASSMCP_SERVER_ALLOW ghcr.io/sebastienrousseau/passmcp-server:0.0.8 ``` This image reads PASSMCP_SERVER_ALLOW. Set it in your client's env block for this server; docker run -e passes it through to the container. ### opencode ```json { "$schema": "https://opencode.ai/config.json", "mcp": { "com-sebastienrousseau-passmcp-server": { "type": "local", "command": [ "docker", "run", "--rm", "-i", "-e", "PASSMCP_SERVER_ALLOW", "ghcr.io/sebastienrousseau/passmcp-server:0.0.8" ], "enabled": true } } } ``` This image reads PASSMCP_SERVER_ALLOW. Set it in your client's env block for this server; docker run -e passes it through to the container. ### Hermes ```yaml mcp_servers: com-sebastienrousseau-passmcp-server: command: "docker" args: ["run", "--rm", "-i", "-e", "PASSMCP_SERVER_ALLOW", "ghcr.io/sebastienrousseau/passmcp-server:0.0.8"] ``` This image reads PASSMCP_SERVER_ALLOW. Set it in your client's env block for this server; docker run -e passes it through to the container. ### Netclaw ```json { "McpServers": { "com-sebastienrousseau-passmcp-server": { "Transport": "stdio", "Command": "docker", "Arguments": [ "run", "--rm", "-i", "-e", "PASSMCP_SERVER_ALLOW", "ghcr.io/sebastienrousseau/passmcp-server:0.0.8" ] } } } ``` This image reads PASSMCP_SERVER_ALLOW. Set it in your client's env block for this server; docker run -e passes it through to the container. ### Other ```json { "mcpServers": { "com-sebastienrousseau-passmcp-server": { "command": "docker", "args": [ "run", "--rm", "-i", "-e", "PASSMCP_SERVER_ALLOW", "ghcr.io/sebastienrousseau/passmcp-server:0.0.8" ] } } } ``` This image reads PASSMCP_SERVER_ALLOW. Set it in your client's env block for this server; docker run -e passes it through to the container. ## 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. ### 2026-11-05 (score 53, −3) - [functional] Stability: pass → 0.80 ### 2026-10-30 (score 56, 0) - [security] Stability: 0.97 → pass ### 2026-10-29 (score 56, +1) No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes. ### 2026-10-27 (score 55, +1) No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes. ### 2026-10-25 (score 54, +1) No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes. ### 2026-10-23 (score 53, +1) No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes. ### 2026-10-21 (score 52, +1) No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes. ### 2026-10-19 (score 51, +1) - [functional] Package version: 0.0.3 → 0.0.8 ## MCP tools (3) ### `passmcp_check` (~159 tokens) Evaluate an MCP server with passmcp Evaluate an MCP server's Streamable HTTP endpoint with passmcp's diagnostic and return its score, grade, counts and every failing check with what it means and a link to the fix. Use it to find out whether a server is ready for agents before relying on it. The endpoint must be on this server's allowlist (loopback addresses by default). No credentials leave this machine, and passmcp calls only the server's tools that declare readOnlyHint. An evaluation takes up to a minute. Input parameters: - `endpoint` (string, required): The server's Streamable HTTP URL, such as http://127.0.0.1:3000/mcp. - `phases` (array): Evaluate only these phases; omit for all nine. Output parameters: - `blocked` (string) - `counts` (object) - `endpoint` (string) - `failures` (array) - `grade` (string) - `score` (number) - `truncated` (boolean) ### `passmcp_verify_attestation` (~112 tokens) Verify a passmcp attestation Check a passmcp attestation, the in-toto statement passmcp produces about one MCP server, offline: its structure, its subject digest, and optionally that it is about a given endpoint. Returns whether it is valid, what it says, and why not when it is not. Nothing is fetched; pass the statement's JSON text. Input parameters: - `endpoint` (string): When given, the endpoint the statement must be about. - `statement` (string, required): The attestation's JSON text. Output parameters: - `covers` (boolean) - `endpoint` (string) - `error` (string) - `failing` (array) - `grade` (string) - `score` (number) - `valid` (boolean) ### `passmcp_version` (~40 tokens) Report the versions in use Return passmcp-server's version and the version of the passmcp program it uses, for a bug report or to confirm a check exists. Output parameters: - `passmcp` (string) - `passmcpServer` (string) ## Diagnostics Captured diagnostic sections: Provenance. The full working is on the page: https://verifymcp.io/servers/com-sebastienrousseau-passmcp-server/ghcr-io-sebastienrousseau-passmcp-server#diagnostics ## Score history - 2026-11-05: 53 - 2026-11-04: 56 - 2026-11-03: 56 - 2026-11-02: 56 - 2026-11-01: 56 - 2026-10-31: 56 - 2026-10-30: 56 - 2026-10-29: 56 - 2026-10-28: 55 - 2026-10-27: 55 - 2026-10-26: 54 - 2026-10-25: 54 - 2026-10-24: 53 - 2026-10-23: 53 - 2026-10-22: 52 - 2026-10-21: 52 - 2026-10-20: 51 - 2026-10-19: 51 - 2026-10-18: 50 - 2026-10-17: 50 - 2026-10-16: 49 - 2026-10-15: 49 - 2026-10-14: 49 - 2026-10-13: 48 - 2026-10-12: 42 - 2026-10-10: 42 - 2026-10-07: 42 - 2026-10-04: 42 - 2026-10-03: 42 - 2026-10-02: 42 ## Common questions ### What is the passmcp MCP server? passmcp is an MCP server listed in the public MCP registry as com.sebastienrousseau/passmcp-server. Evaluate an MCP server with passmcp and verify its attestations, from inside the agent. Read-only. This page covers its container image (ghcr.io/sebastienrousseau/passmcp-server). ### Is the passmcp MCP server safe to use? passmcp scores 53 out of 100 on VerifyMCP. 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 passmcp MCP server expose? passmcp exposes 3 tools: passmcp_check, passmcp_verify_attestation, passmcp_version. Their descriptions and schemas cost roughly 311 tokens of context every time the server is loaded. ### Is the passmcp MCP server still maintained? passmcp 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 passmcp MCP server under? passmcp declares the GPL-3.0-only licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls. ## Links - GitHub Container Registry: https://ghcr.io/sebastienrousseau/passmcp-server - Repository: https://github.com/sebastienrousseau/passmcp-server - Changelog RSS feed: https://verifymcp.io/servers/com-sebastienrousseau-passmcp-server/ghcr-io-sebastienrousseau-passmcp-server.xml - Changelog JSON feed: https://verifymcp.io/servers/com-sebastienrousseau-passmcp-server/ghcr-io-sebastienrousseau-passmcp-server.json - HTML version of this page: https://verifymcp.io/servers/com-sebastienrousseau-passmcp-server/ghcr-io-sebastienrousseau-passmcp-server