Resend (199-biotechnologies) MCP Server
resend-mcp-server
npm
v2.0.1
Published by 199-biotechnologies — no publish provenance, so origin is unverified, but the source is public: the repository link below is self-declared yet readable, so you can inspect the code before adopting it.
Complete MCP server for Resend API with all endpoints - send emails, manage domains, contacts, broadcasts, and more
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 − 4 = 96. 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 |
| −1 | publisher verification (public source) — no provenance, but the source is public and inspectable |
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 1
medium Hardcoded egress to an external endpoint (build/index.js)MTC-SRC-003
In the server's implementation (`build/index.js:709`): A hardcoded outbound call to a fixed external host inside server code is a classic exfiltration/telemetry channel — especially paired with reads of local data. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: eData) || await fetch(`https://api.resend.com/broadcasts/${broadcastId}`, { method: 'PATCH',
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server build/index.js
Tools 29
Each tool and what it can reach — statically extracted from the published source.
send-emailnetwork egresscancel-emailno sensitive capabilitycreate-api-keyno sensitive capabilitycreate-audienceno sensitive capabilitycreate-broadcastno sensitive capabilitycreate-contactno sensitive capabilitycreate-domainno sensitive capabilitydelete-api-keyno sensitive capabilitydelete-audienceno sensitive capabilitydelete-broadcastno sensitive capability
Show 19 more tools ↓
delete-contactno sensitive capabilitydelete-domainno sensitive capabilityget-audienceno sensitive capabilityget-broadcastno sensitive capabilityget-contactno sensitive capabilityget-domainno sensitive capabilityget-emailno sensitive capabilitylist-api-keysno sensitive capabilitylist-audiencesno sensitive capabilitylist-broadcastsno sensitive capabilitylist-contactsno sensitive capabilitylist-domainsno sensitive capabilitysend-batch-emailsno sensitive capabilitysend-broadcastno sensitive capabilityupdate-broadcastno sensitive capabilityupdate-contactno sensitive capabilityupdate-domainno sensitive capabilityupdate-emailno sensitive capabilityverify-domainno sensitive capability
What this scan could not see
- Tools were statically extracted from the published source (29 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 |
|---|---|---|---|---|
v2.0.1 latest |
A 96/100 | 1 | 1.13.0 | 2026-09-07 |
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.
npx mcptrustchecker scan resend-mcp-server --onlineOther implementations of Resend 6
Independent packages implementing the same tool, scanned with the same engine. Compare all 7 side by side →
Comprehensive MCP Server for Resend API - manage emails, domains, templates, contacts, and more via AI assistants
这是一个基于 [FastMCP](https://github.com/fastmcp/fastmcp) 框架构建的 MCP (Model Context Protocol) 工具包。
[](https://smithery.ai/server/@resend/resend-mcp) [](https://www.npmjs.com/package/resend-mcp)
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