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AI agent tools for API integration

In this catalog, an API integration tool is one that connects an agent to a third-party REST or GraphQL API. Our enrichment pass tags 228 listings with it: 83 MCP servers, 72 agent skills, 11 plugins, 7 agent frameworks, 49 AI agents and 6 no-code agent builders. By listing rank, the top MCP server is treg.to, the top agent skill is derive-client and the top AI agent is Afterwren by CyberMax. 25 of the 228 are published by the vendor behind the product, and 148 were active in the last 30 days. 19 of the 83 MCP servers run only as remote servers, with nothing to install locally. Each entry below links to its listing page, with grades, install commands and sources.

Updated Oct 26, 2026 · Built from catalog data; how we rank and grade

What the job is

Tagged listings
228
By type
83 MCP servers, 72 agent skills, 11 plugins, 7 agent frameworks, 49 AI agents and 6 no-code agent builders
Published by the vendor
25 of 228
Active in the last 30 days
148 of 228
Open source
153 of 228
MCP servers that run only remotely
19 of 83
Hosts named by the MCP servers
Claude Code (80), Cursor (80), VS Code (80)

Building blocks by type

The top entries of each type, by listing rank. Open a listing for its install command, grades and sources.

MCP servers 83 tagged

  1. 1
    treg.to

    superdesigndev

    OpenRouter for tools and data.

    • Most GitHub stars here (6,027)
    • Remote server, no local install
    • Active in the last 30 days

    ★ 6KLast active Oct 24, 2026Remote (HTTP)Claude Code, VS Code, Cursor, Windsurf

  2. 2
    LetsFG — Flights & Hotels

    LetsFG

    Search and book flights and hotels: hundreds of airlines, plus bookable hotel rates.

    • 2.2K GitHub stars
    • Runs locally or as a remote server
    • Active in the last 30 days

    ★ 2.2KLast active Oct 21, 2026Local (stdio), Remote (HTTP)Claude Code, VS Code, Codex, Cursor +2

  3. 3
    AnythingMCP

    HelpCode-ai

    Any REST/SOAP/GraphQL/OData/SQL API as MCP tools for Claude & ChatGPT.

    • Remote server, no local install
    • Active in the last 30 days
    • Open source (AGPL-3.0)

    ★ 740Last active Oct 24, 2026Remote (HTTP)Claude Code, VS Code, Cursor, Windsurf

  4. 4
    Postman MCP Server

    postman.comOfficial

    Give your AI agents trusted access to the full Postman platform.

    • Published by the vendor
    • Runs locally or as a remote server
    • Active in the last 30 days

    ★ 325Last active Oct 16, 2026Local (stdio), Remote (HTTP)Claude Code, VS Code, Codex, Claude Desktop +2

  5. 5
    QVeris

    QVerisAI

    Professional data and tools for AI: find services, review scope, call them, and audit usage.

    • Runs locally or as a remote server
    • Active in the last 30 days
    • Open source (MIT)

    ★ 263Last active Oct 23, 2026Local (stdio), Remote (HTTP)Claude Code, VS Code, Codex, Cursor +2

Search MCP servers for API integration → All connectors

Agent skills 72 tagged

  1. 1
    derive-client

    vercel-labsOfficial

    Reverse-engineer a website's internal API by recording browser traffic into a HAR file, then generate a standalone client or CLI that calls the endpoints…

    • Published by the vendor
    • Largest repository here (44,530 stars)
    • Active in the last 30 days

    ★ 44.5KLast active Oct 22, 2026Claude Code, Claude apps, Codex, Cursor +6

  2. 2
    lark-event

    larksuite

    Lark/Feishu real-time event listening / subscribing / consuming: stream events as NDJSON via `lark-cli event consume <EventKey>` (covers IM…

    • Repository has 17.8K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 17.8KLast active Oct 13, 2026Claude Code, Claude apps, Codex, Cursor +6

  3. 3
    mcp

    PrimeIntellect-ai

    Use external MCP services generically from Python - search the supported-service catalog, inspect the user's connections, discover live tool schemas, and call…

    • Repository has 22.3K stars
    • Active in the last 30 days

    ★ 22.3KLast active Oct 21, 2026Claude Code, Claude apps, Codex, Cursor +6

  4. 4
    nemo-fabric-integrate

    NVIDIA Corporation and Affiliates

    Use this skill when integrating NVIDIA NeMo Fabric into a consumer application, service, evaluation harness, or platform through the typed Python SDK —…

    • Repository has 3.7K stars
    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 3.7KLast active Oct 17, 2026Claude Code, Claude apps, Codex, Cursor +6

  5. 5
    new-provider

    katanemo

    Add a new LLM provider to hermesllm.

    • Repository has 7.1K stars
    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 7.1KLast active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6

Search agent skills for API integration → All skills

Plugins 11 tagged

  1. 1
    GitHub Copilot API Gateway

    Suhaib Bin Younis

    Free & open-source universal API Gateway for all VS Code language models.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 128Last active Oct 24, 2026VS Code, Cursor, Windsurf, VSCodium

  2. 2
    OpenMCP

    kirigaya

    An all in one MCP Client/TestTool

    • Most GitHub stars here (751)
    • Open source (Apache-2.0)

    ★ 751Last active Jun 4, 2026VS Code, Cursor, Windsurf, VSCodium

  3. 3
    InsForge

    InsForge

    Install and manage InsForge MCP servers with one click.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 8Last active Oct 23, 2026VS Code, Cursor, Windsurf, VSCodium

  4. 4
    Gud API - REST & GraphQL Client

    gudlab

    API client for VS Code, Cursor, Windsurf & other editors.

    ★ 2Last active Sep 19, 2026VS Code, Cursor, Windsurf, VSCodium

Search plugins for API integration → All plugins

Agent frameworks 7 tagged

  1. 1
    python-utcp

    universal-tool-calling-protocol

    Official Python implementation of the Universal Tool Calling Protocol, calling HTTP, CLI, MCP and text-file tools through plugins.

    • Most weekly downloads here (1.9K)
    • Open source (MPL-2.0)
    • For Python

    ★ 653↓ 1.9K/wkLast active Sep 16, 2026

  2. 2
    metorial

    metorial

    Open-source access layer that connects AI agents to 1200+ integrations with shared auth, permissions and audit logs.

    • Most GitHub stars here (3,365)
    • Active in the last 30 days
    • For TypeScript and JavaScript

    ★ 3.4K↓ 236/wkLast active Oct 22, 2026

  3. 3
    code-mode

    universal-tool-calling-protocol

    TypeScript library that lets agents call MCP and UTCP tools by running model-written code in a sandbox.

    • 1.6K GitHub stars
    • Open source (MPL-2.0)
    • For TypeScript

    ★ 1.6KLast active Aug 25, 2026

  4. 4
    yomo

    yomorun

    Open-source LLM function calling framework for AI agents, with serverless LLM tools and geo-distributed infrastructure.

    • 1.9K GitHub stars
    • Active in the last 30 days
    • For Rust

    ★ 1.9KLast active Oct 24, 2026

Search agent frameworks for API integration → All harnesses & sdks

AI agents 49 tagged

  1. 1
    Afterwren by CyberMax

    CyberMax

    Paid API keys from $19/month (Builder: 25,000 calls a month); free tier 100 calls a day per IP with no key.

  2. 2
    Duo Data Utilities

    Duo Leads

    IBAN, ISIN, VAT & tax ID, barcode, timezone and geo utilities: 33 independent pay-per-call data utilities (identifiers, time, text, encodings, geodesy…

  3. 3
    nohumans.directory

    nohumans.directory

    A registry, not an agent: a machine-readable index of paid (x402) APIs and datasets with automated probe verification, payment-destination stability tracking…

  4. 4
    APIs.io

    API Evangelist

    Read-only discovery over the APIs.io catalog of API providers, their APIs, and the machine-readable artifacts each publishes.

  5. 5
    MeshMarket

    Right On Par LLC

    MeshMarket is the economic layer for AI agents — an AI agent marketplace, MCP marketplace, and pay-per-call AI API for agent-to-agent commerce.

Search AI agents for API integration → All agents

No-code builders 6 tagged

  1. 1
    Pipedream

    Pipedream

    Integration layer for AI agents and developer workflows, with managed auth, 10,000+ prebuilt tools, an MCP server and custom code steps

    • Most GitHub stars here (11,759)
    • Active in the last 30 days

    ★ 11.8KLast active Oct 23, 2026

  2. 2
    Moveworks AI Agent Builder

    Moveworks

    Low-code studio where teams describe the tools their AI assistants use, review a plan, then build, test and debug them.

  3. 3
    Amazon Bedrock Agents

    Amazon Web Services

    AWS service for agents that split requests into steps, call company APIs and query knowledge bases; closed to new customers

Search no-code builders for API integration → All no-code builders

Questions

What are the top tools for API integration?
By listing rank, the top MCP server is treg.to, the top agent skill is derive-client and the top AI agent is Afterwren by CyberMax. Rank weighs adoption, freshness, documentation and publisher identity; money never changes it.
How many tools does the catalog list for API integration?
228 listings are tagged for it: 83 MCP servers, 72 agent skills, 11 plugins, 7 agent frameworks, 49 AI agents and 6 no-code agent builders. Tags come from an automated enrichment pass over the top-ranked listings, so tools outside that pass are not counted.
Which AI apps do the MCP servers work with?
Of the 83 MCP servers, 80 list Claude Code, 80 list Cursor and 80 list VS Code as a supported host. Open a listing for its install command and the other hosts it names.
Which of these are published by the vendor itself?
25 of the 228 are published by the vendor behind the product, including derive-client, google-ads-api-quickstart and google-ads-api-mcp-setup.

228 listings are tagged for this use case; the lists above show the top entries.

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