Agent Frameworks With an API
As of June 2026, AIDiveForge tracks 31 agent frameworks with an api. Curated agent frameworks with an api tracked by AIDiveForge. Listings are verified against each tool's live website and re-checked regularly.
Last updated June 12, 2026 · 31 tools
1. Agent Development Kit (ADK)
ADK is the open-source agent development framework that lets you build, debug, and deploy reliable AI agents at enterprise scale.
Free
2. Agent Governance Toolkit
Policy enforcement, zero-trust identity, execution sandboxing, and reliability engineering for autonomous AI agents.
Free
3. AgenticCalling AI
The core workflow is API-driven: your agent (Claude, ChatGPT, CrewAI, or similar) calls the AgenticCalling API, which places the outbound call, handles the conversation autonomously, and returns structured output — including JSON-extracted data — back to your pipeline. Parallel dialing is the headline capability: the vendor describes batch calls to dozens of numbers simultaneously, which is what makes hotel rate surveys or supplier negotiations viable without a call center. The free tier offers precious little call volume, making it a proof-of-concept runway rather than a production budget. Self-hosting is not an option, so every call transits Magnara's infrastructure — a constraint that stops regulated industries cold. Teams with strict data residency requirements look elsewhere before they finish their security review.
Paid
4. Agnt
AGNT is a local-first agent operating system built around an AGI loop: the agent executes a step, evaluates the result, and re-plans before moving forward — without you steering each decision. Persistent memory and skill layers mean context survives across sessions, not just within a single run. The visual workflow designer handles repeatable paths; goal-mode hands the agent an objective and lets it figure out the steps. Self-hosted deployment with Docker keeps data on your own infrastructure, which matters when your legal team has opinions about where prompts and outputs live. The custom license — not OSI-standard — is the detail that stops procurement at some organizations before the first demo.
PaidOpen Source
5. Browser Use
Browser Use is an open-source Python library for autonomous web task automation using LLMs and computer vision. Teams use it to extract competitive data, fill forms at scale, and monitor page changes across hundreds of sites. The tool hits 89.1% success on standard benchmarks and comes with stealth browser support, CAPTCHA solving, and residential proxies across 195+ countries. The vendor also runs a cloud infrastructure option alongside the self-hosted library. Most production teams pair it with managed browser infrastructure and human approval gates for financial or sensitive actions. The sharp edge: LLMs can't reliably distinguish user instructions from webpage content, leaving agents vulnerable to indirect prompt injection attacks that succeed 24% of the time without defenses.
PaidOpen Source
6. CopilotKit
The core model is a React and Angular SDK that connects your existing frontend to whatever agent backend you're already running — LangChain, CrewAI, or a custom setup — via the AG-UI protocol, a bi-directional event stream the vendor describes as 'the general-purpose connection between a user-facing application and any agentic backend.' Agents render rich UI cards, forms, and widgets inline as they work, not just text responses. Thread and state persistence is handled automatically across sessions. The friction point arrives when your deployment target isn't a web surface: Slack and Teams connections are flagged as early access, which means you're betting on a roadmap, not a shipping feature. Teams with strict approval gates before agent actions can wire those checkpoints in, but the docs describe this as a configuration responsibility rather than a built-in guardrail system.
PaidOpen Source
7. CrewAI
CrewAI helps enterprises operate teams of AI agents that perform complex tasks autonomously, reliably and with full control. The open-source framework (free, self-hosted) defines agents with roles, goals, and backstories, orchestrating them through tasks; the paid AMP adds a visual Studio, deployment infrastructure, tracing, guardrails, and enterprise features. The framework was rebuilt from scratch to remove LangChain dependency; as of v1.14, it's fully standalone and works with any LLM provider. It's used by nearly half of the Fortune 500. But production friction is real: common Reddit advice is to start with CrewAI for speed and migrate to LangGraph when you hit scaling limits—reasonable for most projects. Users report that enthusiasm evaporates when running repeatedly on multiple components, and executing large SELECT queries overflows the LLM context window.
PaidOpen Source
8. DataGrout Invariant
DataGrout AI's platform is built to govern agents that run across enterprise systems — CRM, ERP, accounting — where an uncontrolled action has a real cost. The vendor describes deterministic execution controls, hallucination prevention, persistent memory across sessions, and audit trails that satisfy compliance review. Observability and cost tracking are positioned as first-class features, not add-ons, so teams can see which agent step burned the most tokens before the bill arrives. The self-hosted option matters for regulated industries where data cannot leave the perimeter. Where the platform has less evidence behind it: community reports and independent benchmarks are scarce, which makes it harder to verify the hallucination reduction claims at scale before you commit.
Paid
9. Dify
Open-source LLM app development platform combining AI workflow, RAG pipeline, agent capabilities, model management, observability features and more.
Paid
10. Eidentic
The SDK centers on a temporal knowledge graph that tracks when facts were true, resolves contradictions, and consolidates between sessions — so the agent sharpens over time rather than accumulating noise. Durable runs, enforced cost ceilings, and CI-gated evals ship as part of the core, not as paid add-ons. The vendor benchmarks report 55.2% on LongMemEval versus 41.0% for full-context stuffing, and claims up to 39× fewer tokens per query. The gap shows up in support and long-running assistant workflows where session history compounds. At v0.1, the ecosystem is early — teams building anything outside the TypeScript path face a hard stop.
FreeOpen Source
11. Ejentum - Reasoning Harness
The scraped page content provided does not match the tool described in the structured data — it belongs to a travel-identification app called Spotter, not Ejentum's reasoning harness. Based solely on the structured tool data and validator context, Ejentum is positioned as a reasoning layer that wraps agents with auditable decision chains, anti-deception safeguards, and token-optimized reasoning paths. The vendor states it targets competitive programming benchmarks and compliance-grade auditability. Without matching page content to source specific architectural or integration claims, production behavior at scale and exact failure ceilings cannot be confirmed.
PaidFree Trial · 30 days
12. Elysia
An open-source framework that spins up an end-to-end agentic RAG application with just two terminal commands.
Free
13. FalsifyLab Alpha
The vendor describes FalsifyLab Pro as an MCP server deployable inside Claude Code, Cursor, Cline, or Windsurf, where agents autonomously call tools to pull SEC filings, DeFi vault yields, whale wallet positions, and live macro tape — SPX, VIX, on-chain signals. The free tier returns cached data with rate limits, which is enough to validate a workflow but not enough for production research latency. The Pro subscription unlocks live feeds. Self-hosted deployment is available via PyPI, so teams with data-residency requirements can run it without routing signals through vendor infrastructure. The ceiling appears when research logic grows complex: the tool surfaces data, but multi-step branching across asset classes still lives in your agent scaffolding, not inside FalsifyLab.
PaidFree Trial · 7 days
14. Goose
Open-source local-first AI agent framework for automating complex tasks with any LLM provider.
Free
15. Hermes Agent
Self-improving open-source AI agent with persistent memory, skill learning, and multi-platform access.
Free
16. Hermes Agent
The agent lives on your server — not a vendor's — and connects to Telegram, Discord, Slack, WhatsApp, Signal, and email simultaneously, so the same agent handles a Slack request in the morning and a scheduled backup at night. Persistent memory and auto-generated skills mean it accumulates institutional knowledge over time rather than starting cold on each invocation. Real sandboxing across Docker, SSH, Singularity, Modal, and local backends means you can isolate risky tasks without routing them through a third party. The ceiling appears when you need managed reliability guarantees: at v0.16.0 this is early-stage software, and self-hosted operations teams carry full responsibility for uptime, credential management, and model API costs. Teams that need SLA-backed infrastructure typically wire Hermes into a managed hosting layer — which adds operational overhead the framework itself does not absorb.
FreeOpen Source
17. Langflow
Open-source visual builder for constructing AI agents and RAG applications via drag-and-drop interface with Python extensibility.
PaidOpen Source
18. Mailto.Bot – Email API for AI agents with native MCP support
Email API for AI agents with native MCP support and instant mailbox creation.
Paid
19. Microsoft Agent Framework
A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.
Free
20. Monid 2.0
Unified API router and payment processor for agents to discover and call third-party tools on demand.
Paid
21. NanoClaw
NanoClaw is a lightweight, open-source personal AI agent that runs on your own machine, connects to messaging apps like WhatsApp, Telegram, Slack, Discord, and Signal, and is built around just 15 source files you can read in a single sitting.
Free
22. Nightwatch
The agent runs a ReAct loop: it calls tools against your live infrastructure — Kubernetes, Docker, AWS, Grafana, GitHub — reasons over what it finds, and produces ranked remediation proposals that sit in a queue waiting for your sign-off before anything touches production. Read-only investigation is the hard constraint by design, which means the agent cannot act unilaterally. That boundary is a feature for regulated or risk-averse teams and a ceiling for teams that want closed-loop auto-remediation. Self-hosted and air-gap friendly, with local inference support, it fits environments where data never leaves the building.
PaidOpen Source
23. OpenAgents
OpenAgents positions itself as the coordination backbone for distributed AI agents. You get a hosted workspace (or self-host) where agents working on separate machines discover each other, share files and browser context, and coordinate via @mentions. Installation is one-liner: install the Launcher desktop app, point agents at a workspace token, and they join. The platform is open-source with an active but modest community. The technical surface is clean—agents register on the network, events flow between them, and context stays shared. The hard part surfaces later: when your agents are actually doing different things (some coding, some reviewing, some managing), orchestrating handoffs stays manual. This is SDK-first, not no-code. If you're building a research team of specialized agents or debugging scenarios where you need human eyes on agent reasoning in real time, the shared workspace genuinely reduces context switching. If you're running a single coding agent that sometimes needs to call another agent, you might be over-engineering it.
FreeOpen Source
24. OpenFang
An open-source Agent Operating System built from scratch in Rust, designed to run autonomous agents on schedules.
Free
25. RoBrain
RoBrain sits between your team's AI coding tools — Claude Code, Cursor, Copilot, Codex CLI — and a shared Postgres instance, capturing not just decisions but the alternatives your team ruled out. An MCP server runs inside the editor and surfaces relevant history before the agent acts; a batch Synthesis scan reads the whole corpus on a schedule to flag contradictions and drift that no single session would catch. That cross-session contradiction detection is where it separates from alternatives that only check at insertion time or silently delete the losing decision. Self-hosted on Apache 2.0 with your own Postgres; cloud extraction and the Planning API are paid-only features.
PaidOpen Source
26. RunbookHermes
The agent runs multi-signal diagnosis across observability data, builds a root-cause hypothesis, and generates or updates runbooks from what it learns — so the next incident with the same failure pattern starts from a documented baseline instead of a blank slate. The approval-gated remediation workflow means automated action doesn't ship without a reviewer, which matters when the blast radius is a production service. Where it breaks: the repo is five commits deep with zero open issues, which signals early-stage software, not battle-hardened infrastructure. Teams with complex multi-service topologies will hit integration gaps before the agent's reasoning does. Self-hosting is required, so operationalizing this adds a deployment and maintenance surface your platform team owns.
FreeOpen Source
27. Skawld
The SDK runs on Node.js 18+ and Bun 1.1+ as an ESM-only package, so it fits cleanly into modern TypeScript projects without a build-step fight. The vendor describes a minimal setup as a single `Agent` instantiation with a provider, a tool set, and a session — you are running a streaming agent loop in under a dozen lines. Where it starts to strain is on the documentation side: the README is thin, full docs live off-repo at skawld.com/docs, and community reports are sparse given the early star count. Teams who need battle-tested enterprise support or a large ecosystem of pre-built integrations will hit that ceiling fast.
FreeOpen Source
28. Tab Council
Orbit wraps agent coding work in a bounded loop: it selects a dependency-ordered task, hands it to whichever agent you've wired up, then requires passing tests, lint, and type checks before the task closes. Every run produces structured JSON — what the agent returned, how it scored against a rubric, and a human-readable progress log. Nothing advances on the agent's word alone. The ceiling appears when your workflow needs anything beyond single-task validation loops: multi-repo coordination, branching logic between tasks, or a hosted dashboard for non-engineering stakeholders all require you to build on top of Orbit yourself.
FreeOpen Source
29. Tabby
Open-source, self-hosted AI coding assistant with code completion, chat, and agentic automation.
Free
30. Thunderbolt
Open-source, self-hosted enterprise AI client emphasizing data sovereignty and model choice.
Paid
31. Z3r0
Z3r0 is an open-source, self-hosted workbench where a coordinating agent (Z3r0/CSO) delegates to five specialist agents — code audit, recon, exploitation validation, reverse engineering, and cryptography — each scoped to a defined domain. Sessions run against a PostgreSQL-backed timeline log with replay, so long engagements survive interruptions and context window rollovers. WorkProject records tie every finding to authorized scope, targets, and sandbox bindings, which means the evidence chain stays intact when the model context doesn't. The wall appears when your engagement requires a specialist task not covered by the six fixed roles — there is no agent plugin system described in the docs, so teams extending scope are writing new agents from scratch.
FreeOpen Source
Listings on this page are sourced and verified by the AIDiveForge data pipeline. AIDiveForge is editorially independent — no money changes hands for inclusion.