F-Mark (RoeySmallTree/F-Mark) is an MCP server listed on the M8ven Trust Index. It scores 54 out of 100, grade D. It declares 13 tools. No publisher has claimed this listing.
A visionary agent interaction layer with a love-hate relationship with Markdown
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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RoeySmallTree
Source: github_code
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
@fastify/static vulnerable to route guard bypass via path traversal
Fastify's Content-Type header tab character allows body validation bypass
Fastify vulnerable to invalid content-type parsing, which could lead to validation bypass
ws: Memory exhaustion DoS from tiny fragments and data chunks
FMARK_DEV_RESTART_EXIT_CODEFMARK_DEV_SUPERVISOR_PIDF_MARK_ACCESS_REQUEST_TIMEOUT_MSF_MARK_AGENT_IDF_MARK_OPENCODE_MCP_PREFIXF_MARK_PATHF_MARK_SESSION_IDINIT_CWDSSH_CONNECTIONXDG_CONFIG_HOMETool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
13/13 tools missing one or more hints — fmark_mark_seen (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); fmark_list_participants (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); fmark_register_agent (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +10 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool inputs are validated
11/13 tool handlers declare input schemas (85%)
Declare an inputSchema with zod/joi/yup on every tool definition.
README present
No README found
Add a README.md describing the server and its tools.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Shell command execution
3 child_process/subprocess calls in production code — runs shell commands (src/mcpInstall/index.ts:61, src/git/gitRunner.ts:54, src/git/gitRunner.ts:113)
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Production dependencies are patched
0 critical, 3 high severity in production deps — @fastify/static@8.3.0 (high), fastify@5.1.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
2 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
Dependency freshness
1/9 production deps stale: gray-matter@2023-07-12 (3.1y)
Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.
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