Alttext MCP Server
@alttext_ai/alttext-mcp
npm
v1.0.4
Source verified
Published by alttextai — publish provenance cryptographically ties this package to that repository. That is proof of origin, not an official vendor package.
MCP server for AltText.ai — generate alt text, manage image libraries, and audit web pages for accessibility
The grade answers one question — how safe is this server for you to adopt — so it is computed in two auditable stages. Nothing below is an opinion or an LLM's guess; every line is a real term the deterministic engine applied, and the same input always yields the same number.
1. Threat score — 100 − 0 = 100. What the published surface and source actually contain:
The deterministic scan raised no scored threat in the surface it inspected — the threat score stayed at 100. Capability observations and advisory notes are recorded but never lower it.
2. Client adoption risk — 100 − 3 = 97. Three small, subtract-only factors that reflect your risk in adopting it — a clean scan proves less on a powerful, unverified or barely-inspectable package, so the grade says so plainly:
| Points | Adoption-risk factor |
|---|---|
| −3 | capability blast radius (moderate) — client exposure if the model is manipulated |
Capability observations and info notes are shown under Findings but never scored.
Open any row's finding below for the file, line and evidence behind a deduction.
Findings 3
medium Untrusted input can drive an external actionMTC-FLOW-005
Untrusted-input tools ([scrape_page]) co-exist with external-action tools ([update_account]). A prompt injection could cause unwanted external actions, though no direct sensitive-data leak path was found.
Evidence: untrusted [scrape_page] → sinks [update_account]
Fix: Require confirmation for state-changing/egress actions triggered after processing untrusted content.
Location: flow scrape_page → update_account
medium Unconstrained URL/host parameter "webhook_url" on "update_account"MTC-CAP-007
Tool "update_account" takes a URL/host parameter "webhook_url" with no allowlist/pattern. An outbound-request tool with an unbounded destination enables SSRF and cloud-metadata access (e.g. 169.254.169.254).
Fix: Allowlist destinations or constrain the parameter; block private/link-local addresses server-side.
Location: tool update_account · inputSchema.properties.webhook_url
medium Unconstrained URL/host parameter "url" on "scrape_page"MTC-CAP-007
Tool "scrape_page" takes a URL/host parameter "url" with no allowlist/pattern. An outbound-request tool with an unbounded destination enables SSRF and cloud-metadata access (e.g. 169.254.169.254).
Fix: Allowlist destinations or constrain the parameter; block private/link-local addresses server-side.
Location: tool scrape_page · inputSchema.properties.url
Tools 12
Each tool and what it can reach — statically extracted from the published source.
scrape_pageingests untrusted inputupdate_accountnetwork egressbulk_createno sensitive capabilitydelete_imageno sensitive capabilitygenerate_alt_textno sensitive capabilitygenerate_alt_text_from_fileno sensitive capabilityget_accountno sensitive capabilityget_imageno sensitive capabilitylist_imagesno sensitive capabilitysearch_imagesno sensitive capability
Show 2 more tools ↓
translate_imageno sensitive capabilityupdate_imageno sensitive capability
Toxic flows 1
Cross-tool combinations that form a data-exfiltration primitive (untrusted input → sensitive source → external sink).
What this scan could not see
- Tools were statically extracted from the published source (12 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command "npx -y <package>".
Versions 1
Scan history per published version. The engine is deterministic — the same version always yields the same score, so a changed score means the package itself changed.
| Version | Score | Findings | Engine | Scanned |
|---|---|---|---|---|
v1.0.4 latest |
A 97/100 | 3 | 1.13.0 | 2026-09-09 |
Embed this score
Show this server's live Trust Score in your README, docs or website. The badge is served straight from the registry and updates automatically after every rescan — no API key needed. It links back to this page, so anyone who sees the grade can also read the findings behind it instead of taking a number on faith.
Verify this score yourself
The score above is reproducible: the same package version always yields the same result. Run it locally or over the free API — no account, no LLM, fully deterministic.
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