# Z1N

> MCP server for the Z1N Protocol - on-chain identity for AI agents on Polygon

- name: io.github.Z1NProtocol/z1n-mcp
- version: 0.2.0
- connection class: R0 (autonomous)
- trust: 97/100
- quality: 79/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.Z1NProtocol%2Fz1n-mcp
- tools: https://api.protogrid.dev/v1/servers/io.github.Z1NProtocol%2Fz1n-mcp/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "z1n-mcp": {
      "type": "http",
      "url": "https://z1n-mcp-production.up.railway.app/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-100% +updated-5d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (new)

### 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: 71 (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
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: z1n_get_protocol_state (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); z1n_get_key (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); z1n_verify_index (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 481 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

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

- n/a `stability.changes`, `stability.rug_pull`: tool history recorded for 4 of the 7 days needed

### dependencies: 100 (weight 15)

- pass `deps.known_vulns`: no known advisory in 108 resolved packages
- pass `deps.mcp_sdk_version`: @modelcontextprotocol/sdk 1.32.2, no known advisory
- pass `deps.resolvable`: z1n-mcp@0.2.0 resolved: 108 packages

- tools: 6, about 481 tokens to load them all
- tool set hash: 548359806b6a3299e234c8ab7714eff6
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.Z1NProtocol/z1n-mcp.svg)](https://protogrid.dev/servers/io.github.Z1NProtocol/z1n-mcp)
- 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._

## Dependencies

- npm z1n-mcp@0.2.0: resolved, 107 dependencies, MCP SDK @modelcontextprotocol/sdk 1.32.2

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0.

## Remotes

- https://z1n-mcp-production.up.railway.app/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

- npm z1n-mcp@0.2.0

## Tools (6)

- `z1n_get_action_state`: What one Key can do right now, with reasons. Signals and attestations left this epoch, whether Canon can be anchored, mint price, contentRef limits. Read this before building any transaction — it replaces combining four endpoints.
- `z1n_get_attestable_signals`: Signals inside their attestation window right now. Pass keyId to remove the ones that would revert: your own wallet's signals, ones this wallet already attested, and signals that hit the 21 Key-attestation cap.
- `z1n_get_key`: One Key: glyphs, owner, signal and attestation counts, recent signals.
- `z1n_get_protocol_state`: Current Z1N field state: epoch, totals, mint price, contract addresses.
- `z1n_list_signals`: Signals, filterable by key and epoch range. Never returns full history.
- `z1n_verify_index`: On-chain vs indexed delta per entity. Check before trusting indexed data.