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Universal Tool Calling Protocol

utcp.ioInfrastructure

PulseGate's liveness check found it on 8 Oct 2026; it is registered on GitHub and has been in the index since 26 Aug 2026. How this is checked

Universal Tool Calling Protocol is an open-source protocol for enabling AI agents and applications to discover and call tools through their native APIs and protocols. It extends OpenAPI with agent-focused metadata while supporting implementations in languages including Python, TypeScript, and Go.

Inferred · not functionally tested

Open SourceMPL-2.0WebCLISelf-hostedAPI
Universal Tool Calling Protocol preview
Visit utcp.io
57stars
5forks
8features
2025since

Overview

6 features

Purpose: Integrating AI agents with APIs and tools without building wrapper servers or routing calls through middleware.

Inferred · not functionally tested

Audience: developers building AI agents and tool integrations

Inferred · not functionally tested

Functions: agents

Inferred · not functionally tested

Interfaces: API: indicated (inferred, not tested) · MCP: indicated (inferred, not tested) · CLI: indicated (inferred, not tested) · Self-hosting: indicated (inferred, not tested)

Recorded constraints: pricing: open_source · license: MPL-2.0 · platforms: API, CLI, WEB · deployment: browser, cli, self_hosted, api_only

Constraint provenance is unknown; confirm requirements with the publisher.

Record sources: utcp.io · github.com. These links do not verify the individual claims.

In the Tool calling space, Universal Tool Calling Protocol takes a focused approach. Inferred · not functionally tested: It focuses on integrating AI agents with APIs and tools without building wrapper servers or routing calls through middleware. Inferred · not functionally tested: Universal Tool Calling Protocol is an open-source project aimed at developers building AI agents and tool integrations. Basis unknown · not verified: Universal Tool Calling Protocol is open source under the MPL-2.0 license. Basis unknown · not verified: It ships for the web, the command line, and API, and it can be self-hosted.

It is developed by UTCP GitHub Organization, and it first shipped in 2025. Development happens publicly on GitHub with 57 stars. Inferred · not functionally tested: Key capabilities include tool discovery, Direct API calls, and openAPI compatibility. Inferred · not functionally tested: Catalogued interfaces include a public API and an MCP server.

Summary written by a language model from the project’s public pages.

Tasks: Inferred · not functionally tested

  • Tool discovery
  • Direct API calls
  • OpenAPI compatibility
  • Native protocols
  • Authentication support
  • Security guidance

Topics: Inferred · not functionally tested

Tags
tool-calling-protocolapi-discoveryopenapi-extensionagent-integrations
AI capabilities
Structured

JSON profile · Text profile · Access guide

Built with & integrations

Connectors
APIMCP
Runs on
BrowserCLISelf-hostedAPI-only

Trust & compliance

License
MPL-2.0
Public signals
HTTPSOpen SourceFree tierGitHub · ★ 57

Indexing history

1

What PulseGate has recorded for this listing

  1. Indexed26 Aug · 16:01 UTC
    universal-tool-calling-protocol/rs-utcp seen via GitHub Search (Smart)
    Source: GitHub Search (Smart) · Open

Frequently asked questions about Universal Tool Calling Protocol

What does Universal Tool Calling Protocol do?
Inferred · not functionally tested: Universal Tool Calling Protocol focuses on integrating AI agents with APIs and tools without building wrapper servers or routing calls through middleware. It is catalogued under Tool calling on PulseGate.
Who is Universal Tool Calling Protocol for?
Inferred · not functionally tested: Universal Tool Calling Protocol is an open-source project built for developers building AI agents and tool integrations.
Is Universal Tool Calling Protocol free?
Basis unknown · not verified: Yes — Universal Tool Calling Protocol is open source under the MPL-2.0 license and free to use.
What platforms does Universal Tool Calling Protocol run on?
Basis unknown · not verified: Universal Tool Calling Protocol runs on the web, the command line, and API. It can also be self-hosted.
Is Universal Tool Calling Protocol still active?
PulseGate's liveness check found it on 8 Oct 2026.
Who develops Universal Tool Calling Protocol?
Universal Tool Calling Protocol is developed by UTCP GitHub Organization.
How long has Universal Tool Calling Protocol been around?
Universal Tool Calling Protocol first shipped in 2025.
Is Universal Tool Calling Protocol open source?
Basis unknown · not verified: Yes — Universal Tool Calling Protocol is open source under the MPL-2.0 license, developed on GitHub.

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