pykel 1.0.1

A production-grade agentic AI framework for Python: a unified multi-provider model gateway with built-in observability, cost governance, memory, retrieval (RAG), multi-agent orchestration, and deterministic testing.

🧠 kel — The Open-Source Agentic AI Framework for Python

kel is a production-grade agentic AI framework for Python: a unified multi-provider model gateway with built-in observability, cost governance, memory, retrieval (RAG), multi-agent orchestration, self-healing, and deterministic testing — engineered to close the gaps that LLM orchestration frameworks commonly leave open: opaque execution, no native cost control, no reproducible testing, and context/loop failures.

If you're evaluating AI agent frameworks, production-ready agent orchestration libraries, or a Python framework for building autonomous AI agents with real observability and cost governance — this is built for exactly that.

💻 GitHub · 📦 PyPI · 📖 Design & Architecture · 📘 Usage Guide · 🐛 Issues

📦 Install with pip install pykel — the PyPI distribution is named pykel (the kel name was already registered), but the import stays import kel and the CLI command stays kel.

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✨ Why kel

🎯 Common pain point in LLM orchestration frameworks	✅ How kel solves it
🕳️ No first-class tracing — bolt on a third-party observability product or go without	📊 Every call traced by default, self-hostable via Grafana/OTel
💸 Hidden token/cost consumption, surprise bills	💰 Budget objects threaded through every call — hard caps, not suggestions
🧵 Deeply nested abstractions, painful debugging	🪶 Flat, composable classes — no multi-layer wrapper hierarchies to step through
🔁 Agents loop forever, no stuck-loop detection	🛑 Built-in stuck-loop + step-budget guardrails
🧪 No deterministic testing story	🎬 Record/replay testing — real API calls once, deterministic CI forever
🤖 Multi-agent state gets lost between agents	🔗 Shared context bus — downstream agents see what upstream agents decided
🔓 Real disclosed CVEs (deserialization, path traversal, SQLi)	🛡️ Hardened by design — restricted unpickling, parameterized queries, Trivy-scanned every push
🔑 Forces credentials everywhere	☁️ Credentials optional by design — works natively on EC2/EKS/IAM roles, IRSA, self-hosted anonymous access

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🚀 Feature Highlights

• 🔌 Model Gateway — one interface across Anthropic, OpenAI, Cohere, Gemini, Mistral, sync + real async
• 📈 Observability — every span traced automatically → console, Grafana, or the built-in live dashboard
• 💵 Budget & Rate Limiting — token/cost/tool-call caps + RPM/TPM throttling, composable
• ⚡ Caching — in-memory or SQLite response caching, never double-charges budget on a hit
• 🧠 Memory — working / episodic / semantic / procedural, layered like a real cognitive architecture
• 📚 Retrieval (RAG) — Qdrant, Pinecone, Weaviate, Chroma, pgvector, hybrid search, recursive splitting, PDF loading
• 🤝 Multi-Agent Orchestration — sequential, supervisor, parallel, and swarm patterns, streaming included
• 🧭 Brain — fast rule/embedding routing with LLM fallback, parallel-to-finish scheduling
• 🩹 Self-Healing — diagnosis-driven retries with a non-negotiable idempotency guardrail
• 🧰 Built-in Tools — web search (7 providers), URL fetch, Python/shell exec, SQL query
• ✅ Testing — record/replay + LLM-graded evaluation, no live API key needed in CI
• 🖥️ Live Monitoring Dashboard — zero-dependency, real-time metrics + logs in your browser
• 🔐 DevSecOps Built In — Trivy vulnerability/secret scanning, pip-audit, and Bandit SAST on every push

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📦 Install

pip install -e ".[dev]"        # core + test tooling
pip install -e ".[anthropic]"  # + Anthropic
pip install -e ".[openai]"     # + OpenAI
pip install -e ".[gemini]"     # + Google Gemini
pip install -e ".[mistral]"    # + Mistral
pip install -e ".[qdrant]"     # + Qdrant vector store
pip install -e ".[all]"        # everything

⚡ Quickstart

from kel import get_model, Message

model = get_model("anthropic:claude-sonnet-5", api_key="...")
response = model.generate([Message.user("Hello!")])
print(response.text)

Swapping providers is a one-line change — same interface, zero rewrites:

model = get_model("openai:gpt-5.2", api_key="...")
model = get_model("gemini:gemini-2.5-flash")      # falls back to env vars / ADC
model = get_model("mistral:mistral-large-latest")  # falls back to MISTRAL_API_KEY

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🩺 Status

Every subsystem in DESIGN.md has a working, tested implementation — model gateway, observability, budget, context/loop, memory, retrieval, specs, runtime graph, multi-agent orchestration, brain, self-healing, testing, storage, SDK/CLI, monitoring dashboard, and realtime orchestration (interfaces only, by design — see DESIGN.md §7). Known gaps are listed honestly at the bottom of USAGE.md — no overclaiming.

🛡️ Security

Every push and pull request runs a full DevSecOps pipeline: Trivy filesystem + secret scanning, pip-audit for known CVEs in dependencies, and Bandit static analysis over the codebase. Results surface in the repo's Security tab. See security.yml. To report a vulnerability, see SECURITY.md.

🤝 Contributing

Issues and PRs welcome — see CONTRIBUTING.md. Adding a new model provider, vector store, or tool follows the same lazy-import adapter pattern throughout the codebase — see any file under src/kel/models/providers/ for the template.

📄 License

MIT © kvenkatprasad