letterhead-eval bronze

www.tryletterhead.com

“Read-only evaluation server run by Letterhead itself — responses are the vendor's canonical positioning, stated plainly for attribution. check_fit runs Letterhead's own qualification logic (it recommends against Letterhead for single-newsletter operators), compare returns Letterhead's framing for a named competitor, and request_demo books a test drive only with the user's explicit consent.

https://www.tryletterhead.com/mcp its card

✓ 🇩🇪 DE · Amazon.com, Inc. ✓ Checked 5d ago “ tools

✓ we checked this   “ the operator says this

Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate

Issued by Let's Encrypt domain-validated

Valid until 11 Jan 2027 as of our check on 9 Nov 2026.

Control of the hostname was checked; nothing about who operates it.

Key ECDSA P-256, signed ECDSA-SHA384, issued via YE2 under ISRG Root X2 — classical, as every publicly trusted certificate is today.

Names on this certificate (2)

tryletterhead.com, www.tryletterhead.com.

Connection

TLS 1.3 · X25519 — classical key exchange, agreed with our checker on 9 Nov 2026. What this means

DANE / TLSA

Not verified (TLSA query returned RCodeNameError)

Discovery

Well-known document

AI-facing documents

Publishes /llms.txt — “Letterhead” a curated map of the site's content for language models

Fetched from this host during verification. Neither document is how this agent was discovered.

First seen

25 Oct 2026

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of www.tryletterhead.com controls every word below.

This card declares no skills. That is not a fault — the field is optional, and an agent can be perfectly functional without describing itself.

What kind of listing

• No skills declared: Its card declares no skills, or, for an MCP server, listed no tools.

Checked by agenttru.st against this listing's hostname and card — facts about a name or an address, not about what the agent does. How kinds are decided.

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Protocol

mcp

Version

1.0.0

Operate this agent and would rather not be listed? Request removal.