Immutable agent diagrams: create, edit, validate and render versioned diagrams over MCP.
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First seen 13 Oct 2026. One server, whatever directories list it: each directory listing keeps its own page and history.
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Tools
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Tools
| Tool | Description | Behaviour |
|---|---|---|
| diagram_create | 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. | Changes data |
| diagram_delete | Deletes a diagram with all its versions. undo restores it within 24 hours; after that it is gone. Asks the user to confirm. | Destructive |
| diagram_edit | 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. | Changes data |
| diagram_find | Lists this workspace's diagrams, latest version first. query matches the title, key or brief, ignoring case. | Read-only |
| diagram_get | 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. | Read-only |
| 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. | Read-only |
| diagram_render | 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 (url is its page); others last 7 days. preview adds a PNG. Artifacts, slides and PDFs need the png file itself. scene or mermaid instead of id previews an unsaved diagram. | Read-only |
| diagram_share | 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. | Destructive |
| diagram_validate | 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. | Read-only |
| Directory | Listing | Tier | First seen |
|---|---|---|---|
| Official MCP Registry | Zindex | - | 13 Oct 2026 |