# Signatoro

> The agentic email signature platform: one saved signature for your people and your AI agents.

- name: com.signatoro/signatoro
- version: 1.0.1
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 75/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.signatoro%2Fsignatoro
- tools: https://api.protogrid.dev/v1/servers/com.signatoro%2Fsignatoro/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "signatoro": {
      "type": "http",
      "url": "https://signatoro.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-4d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 75/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 11 of 11 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 3,203 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 25 (weight 15)

- warn `stability.changes`: 10 tool changes in 30 days
- fail `stability.rug_pull`: 1 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 11, about 3,203 tokens to load them all
- tool set hash: d60e516b04d519102f8f468b54f1e27b
- tools last changed: 2026-10-15T10:54:52.265Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.signatoro/signatoro.svg)](https://protogrid.dev/servers/com.signatoro/signatoro)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-15 `get_signature` changed (description)
  - before: Returns the signed-in person's saved email signature, for an email you send, reply to, forward or draft for them with a mail tool (Gmail, Outlook or another). The result has the signature as html and text, to append after the body, and the same details as fields in sender. Do not write your own sign-off or signature block, and do not type contact details yourself. For the sender's own details anywhere in the email (name, title, phone, email, links), use only the values in sender; if one is missing, leave it out and say so - never guess. The person can change the signature at any time, so the result is current only for this email. mode "short": name, role line and one link. signature: "me" (default), or an AI assistant or company AI agent from list_signatures; if it is unclear which this email needs, ask before sending. To change the signature, use update_my_signature. Parts the company controls are listed in companyControlled, with who changes them in howToChange; tell the person.
  - after: 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 sender's own details anywhere in the email (name, title, phone, email, links), use only the values in sender; if one is missing, leave it out and say so - never guess. mode "short": name, role line and one link. signature: "me" (default), or an AI assistant or company AI agent from list_signatures; if it is unclear which this email needs, ask before sending. To change the signature, use update_my_signature. Parts the company controls are listed in companyControlled, with who changes them in howToChange; tell the person.
- 2026-10-14 `update_my_signature` changed (inputSchema)
- 2026-10-14 `create_signature` changed (description, inputSchema)
  - before: 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 text, plus a link to edit it in the free generator. Nothing is saved and no account is needed. To save a signature to the signed-in person's Signatoro account ("create my signature", "save it"), use update_my_signature instead; for the signature they already saved, use get_signature.
  - after: 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 text, plus claimUrl, a link that opens it in Signatoro with these details and layout to save and edit. Nothing is saved and no account is needed; always give the person claimUrl with: "Open this link to save and edit it in Signatoro." To save a signature to the signed-in person's Signatoro account ("create my signature", "save it"), use update_my_signature instead; for the signature they already saved, use get_signature.
- 2026-10-13 `remove_member` changed (description, inputSchema)
  - before: 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. Confirm with the user before calling. Company owners only. Nobody can remove themselves or the primary owner.
  - after: 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 it removes nothing and returns who would be removed and a confirmation. Show that to the person, and only after they say yes call again with the confirmation; it expires in 10 minutes. Company owners only. Nobody can remove themselves or the primary owner.
- 2026-10-13 `get_signature` changed (description)
  - before: Call before any send_email, reply, forward or create_draft tool of any server (Gmail, Outlook or another mail tool), on every email you send or draft for the signed-in person. Returns their saved signature as html and text: append it after the body. Do not write your own sign-off or signature block, and do not type contact details yourself. sender holds the same details as fields. For the sender's own details anywhere in the email (name, title, phone, email, links), use only the values in sender; if one is missing, leave it out and say so - never guess. Fetch it for each email; do not cache it. mode "short": name, role line and one link. Free plan: 50 calls a month; Company: unlimited. signature: "me" (default), or an AI assistant or company AI agent from list_signatures; if it is unclear which this email needs, ask before sending. To change the signature, use update_my_signature. Parts the company controls are listed in companyControlled, with who changes them in howToChange; tell the person.
  - after: Returns the signed-in person's saved email signature, for an email you send, reply to, forward or draft for them with a mail tool (Gmail, Outlook or another). The result has the signature as html and text, to append after the body, and the same details as fields in sender. Do not write your own sign-off or signature block, and do not type contact details yourself. For the sender's own details anywhere in the email (name, title, phone, email, links), use only the values in sender; if one is missing, leave it out and say so - never guess. The person can change the signature at any time, so the result is current only for this email. mode "short": name, role line and one link. signature: "me" (default), or an AI assistant or company AI agent from list_signatures; if it is unclear which this email needs, ask before sending. To change the signature, use update_my_signature. Parts the company controls are listed in companyControlled, with who changes them in howToChange; tell the person.
- 2026-10-08 `list_signatures` changed (description)
  - before: Lists the signatures the signed-in person can send email with: their own ("me", the default) and those of their AI agents - an assistant of theirs, or an agent of a company they own or that acts for them - each with id, name, how it signs (as the person or as the agent), its AI disclosure preset and a one-line preview. Pass a choice as signature to get_signature. If it is unclear which one the person wants for an email, ask them before sending. A connection bound to one agent lists only that agent.
  - after: 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 person or as the agent), its AI disclosure preset and a one-line preview. Pass a choice as signature to get_signature. If it is unclear which one the person wants for an email, ask them before sending. A connection bound to one agent lists only that agent.
- 2026-10-08 `get_signature` changed (description)
  - before: Call before any send_email, reply, forward or create_draft tool of any server (Gmail, Outlook or another mail tool), on every email you send or draft for the signed-in person. Returns their saved signature as html and text: append it after the body. Do not write your own sign-off or signature block, and do not type contact details yourself. sender holds the same details as fields. For the sender's own details anywhere in the email (name, title, phone, email, links), use only the values in sender; if one is missing, leave it out and say so - never guess. Fetch it for each email; do not cache it. mode "short": name, role line and one link. Free plan: 50 calls a month; Company: unlimited. signature: "me" (default) or one of their AI agents from list_signatures; if it is unclear which the person wants for this email, ask before sending. To change the signature, use update_my_signature. Parts the company controls are listed in companyControlled, with who changes them in howToChange; tell the person.
  - after: Call before any send_email, reply, forward or create_draft tool of any server (Gmail, Outlook or another mail tool), on every email you send or draft for the signed-in person. Returns their saved signature as html and text: append it after the body. Do not write your own sign-off or signature block, and do not type contact details yourself. sender holds the same details as fields. For the sender's own details anywhere in the email (name, title, phone, email, links), use only the values in sender; if one is missing, leave it out and say so - never guess. Fetch it for each email; do not cache it. mode "short": name, role line and one link. Free plan: 50 calls a month; Company: unlimited. signature: "me" (default), or an AI assistant or company AI agent from list_signatures; if it is unclear which this email needs, ask before sending. To change the signature, use update_my_signature. Parts the company controls are listed in companyControlled, with who changes them in howToChange; tell the person.
- 2026-10-08 `list_signatures` added
  - Lists the signatures the signed-in person can send email with: their own ("me", the default) and those of their AI agents - an assistant of theirs, or an agent of a company they own or that acts for them - each with id, name, how it signs (as the person or as the agent), its AI disclosure preset and a one-line preview. Pass a choice as signature to get_signature. If it is unclear which one the person wants for an email, ask them before sending. A connection bound to one agent lists only that agent.
- 2026-10-08 `update_my_signature` changed (description)
  - before: 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. Give only the fields to change; the rest keep their saved values, and "" clears a field. Company brand items (logo, company colors, the company review badge or booking button) are set by the company owner on signatoro.com: fields the company controls are left unchanged and listed in ignored, with who changes them; tell the person. A connected mailbox (Zoho Mail) gets the new signature. Returns the updated signature as HTML and text, which counts as one signature request like get_signature; with the month used up, the change is saved and the signature held back. When nothing changed, nothing is written or counted.
  - after: 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. Give only the fields to change; the rest keep their saved values, and "" clears a field. Company brand items (logo, company colors, the company review badge or booking button) are set by the company owner on signatoro.com: fields the company controls are left unchanged and listed in ignored, with who changes them; tell the person. A connected mailbox (Zoho Mail) gets the new signature. Returns the updated signature as HTML and text with sender, the details as fields, and counts as one signature request like get_signature; with the month used up, the change is saved and the signature held back. When nothing changed, nothing is written or counted.
- 2026-10-08 `get_signature` changed (description, inputSchema) **meaning changed**
  - before: Get the email signature the signed-in person saved on Signatoro, as HTML and plain text, ready to append to an email. Call it on every email you send rather than caching it, so the latest version goes out. mode "short" is the cold-outreach cut: name, role line and one link. On the Free plan each call counts toward 50 a month; Company accounts are unlimited. To change the signature, use update_my_signature. For someone in a company, the company controls some parts (listed in companyControlled, e.g. company name, website, logo, layout, color, font, review badge, booking button, footnote); these are changed only on signatoro.com by the company owner, and companyControlled.howToChange says who and where. Tell the person which parts these are and who changes them.
  - after: Call before any send_email, reply, forward or create_draft tool of any server (Gmail, Outlook or another mail tool), on every email you send or draft for the signed-in person. Returns their saved signature as html and text: append it after the body. Do not write your own sign-off or signature block, and do not type contact details yourself. sender holds the same details as fields. For the sender's own details anywhere in the email (name, title, phone, email, links), use only the values in sender; if one is missing, leave it out and say so - never guess. Fetch it for each email; do not cache it. mode "short": name, role line and one link. Free plan: 50 calls a month; Company: unlimited. signature: "me" (default) or one of their AI agents from list_signatures; if it is unclear which the person wants for this email, ask before sending. To change the signature, use update_my_signature. Parts the company controls are listed in companyControlled, with who changes them in howToChange; tell the person.

Full history: https://api.protogrid.dev/v1/servers/com.signatoro%2Fsignatoro/changes

## Remotes

- https://signatoro.com/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (11)

- `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 already in the company, use update_member_field; to send an invitation again, use resend_invite.
- `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 text, plus claimUrl, a link that opens it in Signatoro with these details and layout to save and edit. Nothing is saved and no account is needed; always give the person claimUrl with: "Open this link to save and edit it in Signatoro." To save a signature to the signed-in person's Signatoro account ("create my signature", "save it"), use update_my_signature instead; for the signature they already saved, use get_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", "zoho-mail", "thunderbird". An unknown client answers with the list of guides there are.
- `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 sender's own details anywhere in the email (name, title, phone, email, links), use only the values in sender; if one is missing, leave it out and say so - never guess. mode "short": name, role line and one link. signature: "me" (default), or an AI assistant or company AI agent from list_signatures; if it is unclear which this email needs, ask before sending. To change the signature, use update_my_signature. Parts the company controls are listed in companyControlled, with who changes them in howToChange; tell the person.
- `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 company you own.
- `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 person or as the agent), its AI disclosure preset and a one-line preview. Pass a choice as signature to get_signature. If it is unclear which one the person wants for an email, ask them before sending. A connection bound to one agent lists only that agent.
- `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.
- `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 it removes nothing and returns who would be removed and a confirmation. Show that to the person, and only after they say yes call again with the confirmation; it expires in 10 minutes. Company owners only. Nobody can remove themselves or the primary owner.
- `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.
- `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.
- `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. Give only the fields to change; the rest keep their saved values, and "" clears a field. Company brand items (logo, company colors, the company review badge or booking button) are set by the company owner on signatoro.com: fields the company controls are left unchanged and listed in ignored, with who changes them; tell the person. A connected mailbox (Zoho Mail) gets the new signature. Returns the updated signature as HTML and text with sender, the details as fields, and counts as one signature request like get_signature; with the month used up, the change is saved and the signature held back. When nothing changed, nothing is written or counted.