supostSAFE
Search listings, message posters, and create drafts on SUpost, the marketplace for Stanford
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
Remote MCP server for SUpost, the marketplace for Stanford — and, via BRAND=capmus, for Capmus (capmus.com), which serves the same public API from the same supost-web codebase. One repo, two Vercel projects:
BRAND selects the server name, tool titles/descriptions, and default base URL; SUPOST_BASE_URL still overrides the base URL for previews.
Lets AI agents search active listings, fetch listing details, read verified market statistics, message posters, and create draft listings.
This is doc 190 workstream E3 (see supost-web/docs/dev/190-ai-agent-discovery-implementation-plan.md). It is a pure client of SUpost's public surfaces — the read-only listings API (E2), public listing pages, and /stats.md. It has no privileged database access and holds no secrets; the only configuration is the public base URL.
Tools
6b45d3fe587bOBSERVED · 2026-10-12Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.
claude mcp add supost-mcp --env POSTHOG_KEY=${POSTHOG_KEY} --env SUPOST_API_KEY=${SUPOST_API_KEY} --env SUPOST_STATUS_KEY=${SUPOST_STATUS_KEY} --env TOOL_LOG_KEY=${TOOL_LOG_KEY} -- npx -y [email protected]{
"mcpServers": {
"supost-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"POSTHOG_KEY": "${POSTHOG_KEY}",
"SUPOST_API_KEY": "${SUPOST_API_KEY}",
"SUPOST_STATUS_KEY": "${SUPOST_STATUS_KEY}",
"TOOL_LOG_KEY": "${TOOL_LOG_KEY}"
}
}
}
}Exposed tools (7)
5 read · 2 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
check_message_status | read | |
create_post | write | |
get_listing | read | |
get_market_stats | read | |
list_categories | read | |
search_listings | read | |
send_message | write |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | PASS |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- declared (2 observation(s))
- Shell
- none-observed
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (2)
mcp-handler, zod, @types/node, typescript, vitest
Gates applied: no_behavioural_pass, no_license.
6b45d3fe587bfull audit observations/trust-audit/mcp-server/capmus-team__supost-mcp.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-12 | 6b45d3fe587b | SAFE | B | 89 | first audit |
Questions
What is the supost MCP server?
Search listings, message posters, and create drafts on SUpost, the marketplace for Stanford
What tools does supost expose?
7 in total: 5 read-only, 2 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is supost safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.
What credentials does supost need?
It reads POSTHOG_KEY, SUPOST_API_KEY, SUPOST_STATUS_KEY and TOOL_LOG_KEY from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.
How does supost run?
It speaks streamable-http, so it runs as a service you connect to over the network. It is published on npm as supost-mcp at 0.3.0.
How current is this page?
The grade is for one exact copy of the source (6b45d3fe587b), read on 2026-10-12. The repository is watched and re-audited when it changes.