Semiotic
Earlier Revision Confidence: Good (0.85)Semiotic is an MCP server published by nteract, verified on MCP revision 2025-11-25; support for the current revision (2026-07-28) is not yet confirmed. Last verified 2026-08-14.
Does Semiotic support the current MCP specification (2026-07-28)?
Not yet confirmed. Semiotic is verified on revision 2025-11-25; we have not confirmed support for the current revision (2026-07-28) as of 2026-08-14.
Is Semiotic a first-party (official) MCP server?
Undetermined. We have not verified the publisher relationship for Semiotic (as of 2026-08-14).
How do I connect to Semiotic?
Semiotic is available via a hosted remote endpoint at https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp, the package npm:semiotic, the official MCP Registry under io.github.nteract/semiotic, the source repository at https://github.com/nteract/semiotic. Authentication: none. Transports: streamable-http.
What tools does Semiotic expose?
Semiotic exposes 5 tools, including createChart, improveChart, explainChart, auditChart, getChartSchema (last verified 2026-08-14).
Does Semiotic support MCP revision 2025-11-25?
Yes. Semiotic supports MCP revision 2025-11-25 (checked 2026-08-07).
When were Semiotic's facts last verified?
2026-08-14. Each fact on this page links to the sources used to verify it.
Which tools does Semiotic expose?
5 tools verified.
createChartimproveChartexplainChartauditChartgetChartSchema
Verified React chart generation: select, validate, repair, render, and inspect charts through MCP.
Which MCP spec revisions does Semiotic support?
Semiotic has 1 verified spec-support record. Each row lists the revision, the verified status, the evidence URL, and the date that fact was last checked.
| Spec revision | Status | Last checked | Evidence |
|---|---|---|---|
| MCP 2025-11-25 | Supported | Source |
How widely adopted is Semiotic?
Ranked #40 in The MCP 500 with Adoption Index 75.13 (snapshot , methodology v1).
| Measurement | Value | Source |
|---|---|---|
| Official MCP Registry | yes | API · |
| npm downloads (weekly) | 8,611 | API · |
| GitHub stars | 2,691 | API · |
| GitHub forks | 138 | API · |
| Last push | 2026-08-14T13:58:29Z | API · |
| Repository archived | no | API · |
How was this verified, and what are the sources?
Verified · method: endpoint-probe
· confidence 0.85 (Good).
- Official MCP Registry record for io.github.nteract/semiotic at version 3.8.9 - lists remote endpoint https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp and repository https://github.com/nteract/semiotic - accessed
- Endpoint probe of https://semiotic-mcp-server-481507046413.us-west1.run.app/mcp - declined server/discover; negotiated 2025-11-25 via the legacy initialize handshake; tools/list returned 5 tools - accessed
- Staleness re-verification via the GitHub API - repository nteract/semiotic active (pushed 2026-08-14, not archived), latest release v3.8.9 (2026-08-05); entity facts unchanged - accessed
- Endpoint re-probe - server/discover at 2026-07-28 again rejected with error -32000 "Unsupported protocol version: 2026-07-28 (supported versions: 2025-11-25, 2025-06-18, 2025-03-26, 2024-11-05, 2024-10-07)"; legacy status unchanged - accessed