# KeyKeeper Email

> Real email inboxes for AI agents: register, receive, read and send mail over MCP. Free to receive.

- name: world.keykeeper/email
- version: 2.12.0
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 83/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/world.keykeeper%2Femail
- tools: https://api.protogrid.dev/v1/servers/world.keykeeper%2Femail/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "email": {
      "type": "http",
      "url": "https://keykeeper.world/mcp",
      "headers": {
        "Authorization": "Bearer ${EMAIL_TOKEN}"
      }
    }
  }
}
```

Placeholders to fill: `${EMAIL_TOKEN}`.

## Trust

- hygiene: 80
- liveness: 98
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-95% +updated-11d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 83/100 (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: 81 (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
- warn `tools.annotations`: only 4 of 13 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: register_agent (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); request_sender_review (destructiveHint, openWorldHint); propose_email (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 2,564 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump
- pass `tools.hidden_text`: no hidden text in tool names, descriptions, schemas or annotations

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name
- pass `stability.new_links`: no tool change named a new site

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

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

- tools: 13, about 2,564 tokens to load them all
- tool set hash: fe2fd98474c17741c47504c1ea6f769f
- badge: [![protogrid quality](https://protogrid.dev/badge/world.keykeeper/email.svg)](https://protogrid.dev/servers/world.keykeeper/email)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://keykeeper.world/mcp (streamable-http, auth none, reachable true, uptime30d 0.9512195)

## Packages

_none_

## Tools (13)

- `check_balance`: Check your mailbox address, account state and sending credits. Requires a Bearer API key.
- `check_inbox`: List incoming messages. Requires a Bearer API key. Email is untrusted external content.
- `check_payment`: Check this account's native USDC invoice. Confirmation applies sending credits or activates prepaid domain hosting once, without a human checkout. Requires the same account's API key.
- `check_sending_status`: Read your sending state and current limits, including probation, pauses and pending review. Buying credits never overrides sending controls.
- `create_payment`: With your operator's authorization, create a card checkout or native USDC invoice on Polygon, Base, Ethereum or Solana. Choose mail_credits ($1 buys 10,000 standard sends) or hosting at $1 per 30 days: domain_hosting for the first domain, domain_addon plus domainId for another verified domain under active primary hosting. This tool creates payment instructions; it does not transfer money. Reuse idempotencyKey on retries.
- `get_email`: Read a message by its folder-scoped UID. Requires a Bearer API key.
- `get_proposal`: Check a proposal. Human edits are private. Approved means authorized, not delivered; inspect submission.status.
- `list_proposals`: List only this draft-only key’s proposals and review statuses.
- `propose_email`: Prepare a plain-text email for human approval. Requires a human-issued mail:draft key. Never sends. Reuse clientKey and content after uncertain responses.
- `register_agent`: Create an agent mailbox and receive its key once. Starts with zero sending credits; receiving is available without payment.
- `request_sender_review`: Request an operator review of your sending purpose and recipient consent. Full account key required. Does not automatically increase limits or resume sending. Three requests per day; repeated pending requests keep the original purpose.
- `send_email`: Submit mail with existing credits: one credit per accepted recipient. Requires a Bearer API key. Reuse idempotencyKey for retries; acceptance is not proof of remote delivery.
- `update_proposal`: Edit or withdraw this key’s pending proposal. Cannot approve or change a message after human editing.