# Zindex (remote · api.zindex.ai)

Immutable agent diagrams: create, edit, validate and render versioned diagrams over MCP.

- Trust score: 63/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- remote · `api.zindex.ai`: 63/100 (this document), [markdown](https://verifymcp.io/servers/ai-zindex-zindex/api.md), [page](https://verifymcp.io/servers/ai-zindex-zindex/api)

## Channel facts

- Endpoint: `https://api.zindex.ai/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `6.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-18.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (diagram_delete).
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 59/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1818 tokens (~202/item across 9 items; 9 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 17/100
  - Stability observed for 5 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 94/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 80% of tool parameters carry a description.
  - Structured output schemas are declared (33% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - All 2 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.
  - An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Zindex MCP server?

Zindex is a hosted endpoint at https://api.zindex.ai/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http ai-zindex-zindex 'https://api.zindex.ai/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "ai-zindex-zindex": {
      "url": "https://api.zindex.ai/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "ai-zindex-zindex": {
      "type": "http",
      "url": "https://api.zindex.ai/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.ai-zindex-zindex]
url = "https://api.zindex.ai/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ai-zindex-zindex": {
      "type": "remote",
      "url": "https://api.zindex.ai/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add ai-zindex-zindex --url 'https://api.zindex.ai/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  ai-zindex-zindex:
    url: "https://api.zindex.ai/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "ai-zindex-zindex": {
      "Transport": "http",
      "Url": "https://api.zindex.ai/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add ai-zindex-zindex -t streamable-http -u 'https://api.zindex.ai/mcp'
```

### Other

```json
{
  "mcpServers": {
    "ai-zindex-zindex": {
      "type": "http",
      "url": "https://api.zindex.ai/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-17 (score 63, +1)

- [functional] Server version: 6.7.2+build.1960 → 6.9.0+build.1989

### 2026-10-16 (score 62, 0)

- [functional] Server version: 6.3.0+build.1902 → 6.7.2+build.1960

### 2026-10-15 (score 62, +1)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “diagram_create” rewrote its description, which is the text the model reads
- [security] Tool “diagram_delete” rewrote its description, which is the text the model reads
- [security] Tool “diagram_edit” rewrote its description, which is the text the model reads
- [security] Tool “diagram_find” rewrote its description, which is the text the model reads
- [security] Tool “diagram_get” rewrote its description, which is the text the model reads
- [security] Tool “diagram_history” rewrote its description, which is the text the model reads
- [security] Tool “diagram_render” rewrote its description, which is the text the model reads
- [security] Tool “diagram_validate” rewrote its description, which is the text the model reads
- [functional] Server version: 6.0.0+build.1824 → 6.3.0+build.1902

### 2026-10-14 (score 61, 0)

- [functional improvement] Stability: unverified → 0.03
- [functional] Server version: 6.0.0+build.1814 → 6.0.0+build.1824

### 2026-10-13 (score 61)

First indexed and scored.

## MCP tools (9)

### `diagram_find` (~70 tokens)

Find diagrams

Lists this workspace's diagrams, latest change first, with id, key, title and latest revision. query matches the title, key or brief, ignoring case.

Input parameters:

- `cursor` (string): nextCursor from the previous page
- `limit` (integer): Default 10
- `query` (string)

### `diagram_get` (~217 tokens)

Read a diagram

Reads a diagram by id or key. The default outline: a header (id, title, revision, time, hash), the brief, recent versions, one element per line nested by container, and edges as 'id: from -> to'. view 'dsp' returns the scene JSON, 'mermaid' Mermaid to edit and send back to diagram_edit. revision or asOf reads an earlier version; knownRevision, only what changed since; elements, only those elements and their neighbors. Another workspace's diagram answers NOT_FOUND.

Input parameters:

- `asOf` (string): 2026-06-30 (end of day, UTC) or ISO 8601 with an offset
- `cursor` (string): nextCursor from the previous page
- `elements` (array): Element ids to focus on
- `id` (string, required): The diagram's id or key
- `knownRevision` (integer): A revision you already know
- `revision` (integer): Omit for the latest
- `view` (string): Default outline

### `diagram_validate` (~85 tokens)

Check a diagram

Checks a DSP scene or Mermaid text without saving it. Returns ok, errors and warnings, each with a code, the element if any, and a one-line fix.

Input parameters:

- `mermaid` (string): erDiagram or flowchart (graph); drops subgraphs, edges to them and styles
- `scene` (object): https://zindex.ai/schemas/scene.schema.json

### `diagram_create` (~174 tokens)

Save a diagram

Saves a new diagram from a DSP scene or Mermaid text; returns its id, revision 1, content hash and chain hash. key is your stable name for it, unique in the workspace: your repeat with the same key and content returns the existing diagram, not a copy. brief stores context for the next agent. Versions are kept until you delete the diagram or its workspace is deleted.

Input parameters:

- `brief` (string): What the diagram shows, conventions to keep, decisions made
- `key` (string): e.g. payments-architecture
- `mermaid` (string): erDiagram or flowchart (graph); drops subgraphs, edges to them and styles
- `message` (string): One line on why it was made
- `scene` (object): https://zindex.ai/schemas/scene.schema.json

Output parameters:

- `chain`
- `changed` (object)
- `created` (boolean)
- `hash` (string)
- `id` (string)
- `key`
- `noop` (boolean)
- `replayed` (boolean)
- `revision` (integer)
- `warnings` (array)

### `diagram_edit` (~229 tokens)

Change a diagram

Changes a saved diagram as a new revision; old ones stay. Give baseRevision (the revision you last read), a one-line message, and ops (typed operations, https://zindex.ai/schemas/ops.schema.json), mermaid (the whole diagram edited from view mermaid; only differences apply), restoreRevision (an earlier version back), or brief. An edit with an error saves nothing; one that changes nothing returns noop. requestId makes a retry return the first result. A conflict lists what changed.

Input parameters:

- `baseRevision` (integer, required)
- `brief`: Replace the brief; null removes it
- `id` (string, required): The diagram's id or key
- `mermaid` (string): The whole diagram as Mermaid; not with ops or restoreRevision
- `message` (string, required): One line on what the edit does and why
- `ops` (array)
- `requestId` (string): Your id for this edit, e.g. a UUID
- `restoreRevision`: A revision number, or { asOf } for the version current at that instant

Output parameters:

- `chain`
- `changed` (object)
- `created` (boolean)
- `hash` (string)
- `id` (string)
- `key`
- `noop` (boolean)
- `replayed` (boolean)
- `revision` (integer)
- `warnings` (array)

### `diagram_render` (~174 tokens)

Render a diagram

SVG and PNG links to a saved diagram's version, not the image, with hashes and engine version. A published diagram's links are permanent, with url for its page; others last 7 days. preview adds a PNG for you. scene or mermaid instead of id previews an unsaved diagram.

Input parameters:

- `asOf` (string): 2026-06-30 (end of day, UTC) or ISO 8601 with an offset
- `id` (string): The diagram's id or key
- `mermaid` (string): erDiagram or flowchart (graph); drops subgraphs, edges to them and styles
- `preview` (boolean)
- `revision` (integer): Omit for the latest
- `scene` (object): https://zindex.ai/schemas/scene.schema.json

Output parameters:

- `chain`
- `engine` (string)
- `expires` (string)
- `hash` (string)
- `id` (string)
- `png` (string)
- `revision` (integer)
- `svg` (string)
- `url` (string)

### `diagram_history` (~104 tokens)

Diagram history

Lists a diagram's versions, newest first, with time, who made it (by), client, message, chain hash and counts of elements added, changed and removed. compare (from and to: revision numbers or dates) returns what changed between two versions instead.

Input parameters:

- `compare` (object)
- `cursor` (string): nextCursor from the previous page
- `id` (string, required): The diagram's id or key
- `limit` (integer): Default 10

### `diagram_delete` (~74 tokens)

Delete a diagram

Deletes a diagram with all its versions. undo restores it within 24 hours; after that it is gone. Asks the user to confirm.

Input parameters:

- `confirm` (string): Token from CONFIRMATION_REQUIRED
- `id` (string, required): The diagram's id or key
- `undo` (boolean): Restore a deleted diagram

### `diagram_share` (~237 tokens)

Share a diagram

publish makes a diagram readable by anyone at its link; unpublish makes it private. link makes a share link showing its images, not its scene, to anyone who has it; unlink revokes them all. report sends one version to Zindex support. feedback sends Zindex staff a bug, docs (the docs and engine disagree), request or other; id or snippet attaches a diagram. Asks the user to confirm publish, link, report and feedback.

Input parameters:

- `action` (string, required)
- `anonymize` (boolean): For report and feedback; default true
- `confidence` (string)
- `confirm` (string): Token from CONFIRMATION_REQUIRED
- `expected` (string)
- `id` (string): The diagram's id or key
- `kind` (string)
- `observed` (string)
- `problem` (string): For report: what is wrong, in one line
- `revision` (integer): For report or feedback; default the latest
- `snippet`: A scene or Mermaid, 64 KB at most
- `summary` (string): For feedback, required: one line

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/ai-zindex-zindex/api#diagnostics

## Score history

- 2026-10-18: 63
- 2026-10-17: 63
- 2026-10-16: 62
- 2026-10-15: 62
- 2026-10-14: 61
- 2026-10-13: 61

## Common questions

### What is the Zindex MCP server?

Zindex is an MCP server listed in the public MCP registry as ai.zindex/zindex. Immutable agent diagrams: create, edit, validate and render versioned diagrams over MCP. This page covers its hosted endpoint (https://api.zindex.ai/mcp).

### Is the Zindex MCP server safe to use?

Zindex scores 63 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Zindex MCP server expose?

Zindex exposes 9 tools: diagram_find, diagram_get, diagram_validate, diagram_create, diagram_edit, and 4 more. Their descriptions and schemas cost roughly 1,364 tokens of context every time the server is loaded.

### Does the Zindex MCP server require authentication?

No. We connected to Zindex without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Zindex MCP server still maintained?

Zindex is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://api.zindex.ai/mcp
- Website: https://zindex.ai/
- Changelog RSS feed: https://verifymcp.io/servers/ai-zindex-zindex/api.xml
- Changelog JSON feed: https://verifymcp.io/servers/ai-zindex-zindex/api.json
- HTML version of this page: https://verifymcp.io/servers/ai-zindex-zindex/api