Signatoro MCP server

• Registry namecom.signatoro/signatoroverified in the MCP registry

The registry name sits under signatoro.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-19
• Tools11
• Server calls itselfsignatoro
• Server version1.0.1
• Protocol version2025-06-18

On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 114 ms.

• Its tools do none of the product's use cases we checked: paste one signature into Gmail, Outlook, or Apple Mail; keep a shared company signature current for every member.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP score58 of 100answers 100 · does the job 0 · definitions 100 · context 100 · connects 100 · lowered by the warning signs below
• What an agent can do with it0 of 2 use cases
• Answered100% of days17 of 17 daily checks
• Median first answer147 ms
• Space in an agent's context≈ 3,011 tokensthe definitions of all its tools (11), which an agent carries on every turn
• Tool definitionsA · 100 of 100
• Typed results0 of 11 toolsdeclared outputSchema: results come typed, read once

• Every tool passes all six checks.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• create_signature

  Make a free email signature from a name and optional title, company, phone, email, website, LinkedIn, layout and accent color. Returns the signature as HTML (for the HTML part of an email or a signature box that takes HTML) and as plain…

• list_templates

  List the signature layouts Signatoro offers, each with a short description of what it shows and when it fits best. Pass a layout id to create_signature.

• get_install_steps

  Get the steps to add an email signature in a mail app or tool, from Signatoro's install guides, with the link to the full guide. Pass the app as client, e.g. "gmail", "outlook-new", "outlook-classic", "apple-mail", "ios-mail"…

• get_signature

  Returns the signed-in person's saved email signature as html and text, with their sender details as fields in sender, for appending to an email they want signed. Append it after the body, in place of a sign-off of your own. For the…

• update_my_signature

  Save or change the signed-in person's own signature on Signatoro: name, title, phone, email, website, LinkedIn, extra link, photo, review badge, booking button, layout, color and font. With nothing saved yet, this creates the signature…

• list_signatures

  Lists the signatures the signed-in person can send email with: their own ("me", the default), their AI assistants', and company AI agents' (agents of a company they own or that acts for them) - each with id, name, how it signs (as the…

• list_members

  List the people in the signed-in owner's company: joined members and pending invitations, with name, title, phone, status (joined, invited, expired) and whether their signature is installed. Company owners only. Omit company to list every…

• add_member

  Invite a person to the company by email, with their name, title and phone for their signature. They get an email with the invitation and their signature. Counts toward the company plan's people limit. Company owners only. For someone…

• update_member_field

  Change one field (name, title or phone) of a person's signature in the company. A joined member gets an email with their updated signature; for someone still invited, the invitation is sent again with the new details. Company owners only.

• remove_member

  DESTRUCTIVE and cannot be undone: removes a person from the company. A joined member loses access to the company and its signature; a pending invitation is withdrawn with the details entered for it. Two steps: called without confirmation…

• resend_invite

  Send the invitation email again to a person invited to the company who has not joined yet, renewing it for 7 days if it expired. Company owners only.