MCP100 IndexSDK
WatchlistFirst-party MCP

Python UTCP

by Universal Tool Calling Protocol

Reviewed October 5, 2026

SDKSoftware & Technology

Watchlist tracking

Reviewed for relevance and future tracking value.

MCP100 Assessment

Watchlist / Tracking

Why we’re tracking it

Track protocol and MCP interoperability as the SDK matures

Reviewed · Documentation review; complete setup workflow not independently tested

Best fit

Python developers integrating tools through UTCP without proxying everything through one protocol

What we know

Python SDK/reference implementation for Universal Tool Calling Protocol, enabling discovery and invocation of tools exposed through their native transports.

Maintenance / activity evidence

  • Observed (UTC)Merge pull request 111 from universal-tool-calling-protocol/dev

Tracking evidence observed Oct 5, 2026. These dated signals do not establish current maintenance. Reviewed enrichment confidence: medium.

Activity source · commits ↗Activity source · releases ↗

Verification gaps / watch-outs

  • Installation and comprehensive security have not been independently audited.
  • Inherited from connected tool providers. Writes: Depends on provider tools.
  • Provider-specific.
  • Sensitive access: Provider credentials/data
  • UTCP preserves native transports, so every provider needs its own authentication and permission review.
Security source · repository notice ↗

Full authority, access and evidence limits are available in Review context and Access & risk.

Popularity

652 repository stars

Stars observed Sep 25, 2026.

Preserve any already-reviewed adoption metrics in MCP100. Batch 4 did not refresh package downloads because the package-stats provider had insufficient credits.

Preserve any already-reviewed adoption metrics in MCP100. Batch 4 did not refresh package downloads because the package-stats provider had insufficient credits.

All limitations / Review context

How does the current Python package map UTCP and MCP tools?

The bounded assessment reviewed the official README, repository notices, security policy path, and security page for known material public-tracking blockers. No such blocker was identified. This is a public-tracking assessment, not an installation safety certification.

  • UTCP preserves native transports, so every provider needs its own authentication and permission review.
  • Inherited from connected tool providers.
  • Provider-specific.
  • Requests/results flow directly to provider-native transports.
  • Reviewed write actions: Depends on provider tools
  • Sensitive access: Provider credentials/data
  • Installation, client compatibility and comprehensive security have not been independently audited. Authentication and access depend on the configured services.
  • A project-specific SECURITY.md policy was not available at the fetched official path; the review remains limited to published repository notices.
  • No installation, runtime, client matrix, or complete tool-contract audit was performed in this review.
  • The fetched official SECURITY.md path returned HTTP 404; it was not treated as positive evidence.
  • Exact canonical package/install command
  • This is an SDK/protocol implementation, not a single MCP server.
  • Effective auth/risk is inherited from the native provider transport.

Original activity observations

  • 2026-09-16T16:14:24Z: Merge pull request 111 from universal-tool-calling-protocol/dev
Technical identity
github.com/universal-tool-calling-protocol/python-utcp
Reviewed resource type
SDK
Repository identity
universal-tool-calling-protocol/python-utcp

Evidence & Sources

Evidence basis
Recorded source evidence
Setup runtime verification
Not independently runtime-tested by MCP100 for this setup workflow.

Reviewed · Latest source observation

  • GitHub repository ↗

    universal-tool-calling-protocol/python-utcp

    Recorded repository material and project history.