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The Model Context Protocol ecosystem, verified

Current spec 2026-07-28

Sendinel

Earlier Revision Publisher unverified Confidence: Good (0.85)

Sendinel is an MCP server published by sendinel.ai, verified on MCP revision 2025-11-25; support for the current revision (2026-07-28) is not yet confirmed. Last verified 2026-08-20.

Does Sendinel support the current MCP specification (2026-07-28)?

Not yet confirmed. Sendinel is verified on revision 2025-11-25; we have not confirmed support for the current revision (2026-07-28) as of 2026-08-20.

Is Sendinel a first-party (official) MCP server?

Undetermined. We have not verified the publisher relationship for Sendinel (as of 2026-08-20).

How do I connect to Sendinel?

Sendinel is available via a hosted remote endpoint at https://sendinel.ai/mcp, the package npm:@sendinel/mcp-server, the official MCP Registry under ai.sendinel/mcp-server, the source repository at https://github.com/kmdesle/sendinel-ai. Authentication: oauth. Transports: streamable-http.

Does Sendinel support MCP revision 2025-11-25?

Yes. Sendinel supports MCP revision 2025-11-25 (checked 2026-08-20).

Does Sendinel support MCP revision 2026-07-28?

No. Sendinel was checked against MCP revision 2026-07-28 and does not support it (checked 2026-08-20).

When were Sendinel's facts last verified?

2026-08-20. Each fact on this page links to the sources used to verify it.

AI-controlled email ops for campaigns, contacts, segments, analytics, and sending.

Which MCP spec revisions does Sendinel support?

Sendinel has 2 verified spec-support records. 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
MCP 2026-07-28 Not supported Source

How widely adopted is Sendinel?

Not ranked in The MCP 500: insufficient public data (coverage floor not met) (snapshot ). The Adoption Index measures public signals only; it says nothing about quality.

Repository and package signals for Sendinel

Measured directly from the source registries, not asserted from a document. Each figure carries the date it was read; none of it affects the verified spec status above.

Repository as of

The repository this server declares no longer resolves. That is a measurement, not a failed lookup: https://github.com/kmdesle/sendinel-ai returned 404 when checked.

Package (npm) as of

Latest version
1.0.10
Last published
First published
Releases
11
License (package)
UNLICENSED
Maintainers
1
Direct dependencies
13
Unpacked size
798 KB
Registry signature
Signed
Build provenance
No attestation

How was this verified, and what are the sources?

Verified · method: sdk-protocol-constant · confidence 0.85 (Good).

  1. Official MCP Registry record for ai.sendinel/mcp-server at version 1.0.10 - lists remote endpoint https://sendinel.ai/mcp and repository https://github.com/kmdesle/sendinel-ai - accessed
  2. Endpoint probe of https://sendinel.ai/mcp - authorization required (HTTP 401, Bearer resource_metadata="https://sendinel.ai/.well-known/oa); capability set not observable without credentials - accessed
  3. npm registry metadata for @sendinel/mcp-server at published version 1.0.10, retrieved 2026-08-20 - declares a dependency on @modelcontextprotocol/sdk, which resolves to @modelcontextprotocol/sdk@1.30.0 - accessed
  4. Published artifact of @modelcontextprotocol/sdk@1.30.0, retrieved 2026-08-20 - the artifact declares LATEST_PROTOCOL_VERSION 2025-11-25 and carries no 2026-07-28 implementation. Read from the artifact itself, not from release notes - accessed