Who should use Callio?

Callio is a B2B product built for AI agent developers and teams.

Yes — there is a free tier, with paid plans for advanced use.

What platforms does Callio run on?

Callio runs on the web, the command line, and API.

Is Callio still maintained?

Unverified. Callio has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to Callio?

Similar projects tracked by PulseGate include OSINT Toolbox, Defender Security, and UND Libraries Checkout.

Back to the index

Callio

Name: Callio
Author: Callio

callio.devInfrastructure

Callio serves as the API layer for AI agents and LLM applications. It allows developers to connect agents to over 100 tools using a single key, with bring-your-own-key encryption and native support for the Model Context Protocol (MCP). The gateway handles authentication injection, rate limiting, and request routing while providing observability. It integrates with environments like Claude Desktop, Cursor, and standard SDKs, making it easier for teams to build reliable AI-native applications.

FreemiumWebCLIAPICloud-managed

Visit callio.dev

Overview

6 features

In the Infrastructure & Backend space, Callio takes a focused approach. It focuses on managing authentication, rate limits, and integration complexity when connecting AI agents to multiple external APIs and tools. It is built as a B2B product for AI agent developers and teams. A free plan is available. Callio is available on the web, the command line, and API.

Behind Callio is Callio, and it first shipped in 2025. Key capabilities include Unified API Key, BYOK Encryption, and MCP Native Support. It exposes integrations via a public API and an MCP server.

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

Unified API Key
BYOK Encryption
MCP Native Support
Rate Limit Management
Request Proxying
Observability Dashboard

Built with & integrations

Framework

Next.js

Hosting

Vercel

AI providers

openaianthropicgoogle_gemini

Connectors

APIMCP

Runs on

BrowserCLIAPI-onlyCloud-managed

Detected from

Next.js: x-nextjs-prerender header · /_next/static/ in the HTML · __next_f in the HTML
openai: bgpt- in the HTML
Vercel: x-vercel-id header · x-vercel-cache header

Trust & compliance

Verified signals

HTTPSPrivacy PolicyFree tier

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed27 Jul · 00:19 UTC
Callio verified against its public source
Source: PulseGate · Open

Frequently asked questions about Callio

What does Callio do?: Callio focuses on managing authentication, rate limits, and integration complexity when connecting AI agents to multiple external APIs and tools. It is catalogued under Infrastructure & Backend on PulseGate.
Who should use Callio?: Callio is a B2B product built for AI agent developers and teams.
Is Callio free?: Yes — there is a free tier, with paid plans for advanced use.
What platforms does Callio run on?: Callio runs on the web, the command line, and API.
Is Callio still maintained?: Unverified. Callio has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to Callio?: Similar projects tracked by PulseGate include OSINT Toolbox, Defender Security, and UND Libraries Checkout.OSINT Toolbox Defender Security UND Libraries Checkout
Who makes Callio?: Callio is developed by Callio.
How long has Callio been around?: Callio first shipped in 2025.

At a glance

Pricing: Freemium · pricing page detected · free tier
Platforms: Cli · Web
Languages: English
Built for: AI agent developers and teams
Model: B2B
Solves: Managing authentication, rate limits, and integration complexity when connecting AI agents to multiple external APIs and tools.

Live coverage

Identity confidence: Medium · 72.8
Indexed: 27 Jul 2026
Lifecycle: Alive
Last seen: 27 Jul 2026

Identity audit (13)

Slug: callio-callio-dev
Lifecycle state recorded: 27 Jul 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 27 Jul 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 27 Jul 2026
Canonical URL: https://callio.dev/

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