GitHub - amareshhebbar/TrueNorth: Declare the outcome, skip the logic. The developer-first infrastructure engine for structured, multi-turn AI conversations with built-in safety, async follow-ups, and native compliance

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Define your AI agent in YAML. TrueNorth runs the conversation.
_{Field extraction · Hallucination firewall · Multi-agent · Reminders · DPDP/GDPR · WhatsApp-native}

What is TrueNorth?

TrueNorth is an open-source AI agent framework built around one idea: describe your goal in YAML, and TrueNorth handles the entire structured conversation — extraction, validation, emotion, memory, compliance, and output generation.

You don't write conversation logic. You declare the outcome you want.

Quick Start & Commands

TrueNorth uses a unified Makefile to manage dependencies, servers, testing, and CLI tools across Python, Node.js, Go, and Rust.

Run make help at any time to see this list in your terminal.

Setup & Run

make install - Installs all dependencies across all 4 languages.
make dev - Starts the FastAPI server, Postgres, and Redis via Docker Compose.
make stop - Stops all running Docker services.

Chat & CLI

make chat - Starts an interactive terminal chat (uses a free mock LLM by default).
make chat GOAL=medical_intake LIVE=1 - Chats with a specific agent using real LLM API keys.
make dry-run - Runs an automated, non-interactive simulation of an agent.
make validate GOAL=fitness_plan - Validates your agent's YAML schema.

Testing

make test-all - Runs the entire test suite (1,280+ tests across Python, Node.js, Go, and Rust).
make test - Runs only the Python test suite.
make test-unit / make test-integration - Runs specific Python test scopes.
make test-node, make test-go, make test-rust - Runs language-specific SDK checks.

Code Quality & Database

make format / make lint / make typecheck - Runs Ruff and MyPy on the Python core.
make migrate - Applies pending Alembic database migrations.

# fitness_plan.yaml
id: fitness_plan
fields:
  - name: age
    type: integer
    question: "How old are you?"
  - name: primary_goal
    type: text
    allowed_values: [lose weight, build muscle, general fitness]
    question: "What's your primary goal?"
  - name: days_per_week
    type: integer
    min: 1
    max: 7
    question: "How many days can you train per week?"
output:
  format: json
  template: "Generate a personalised 4-week fitness plan for {name}."
follow_up:
  - trigger: "after 7 days"
    check_field: completed_week_one
    check_value: null
    channel: whatsapp
    message_prompt: "Ask warmly how the first week went."

from truenorth import TrueNorthEngine, YAMLLoader

engine = TrueNorthEngine(goal_config=YAMLLoader.load("fitness_plan.yaml"))
await engine.start()

while True:
    user_input = input("> ")
    response   = await engine.process_message(user_input)
    print(response.text)
    if response.is_complete:
        print(response.output)
        break

That's it. Everything else — PII masking, hallucination checks, cost tracking, session persistence, DPDP compliance, WhatsApp delivery — happens automatically.

Why I built this

I've spent years watching teams rebuild the same agent infrastructure from scratch. Every startup building a medical intake, legal intake, HR screen, or fitness coach writes the same code: ask questions, extract fields, validate answers, handle edge cases, generate output. Again and again.

The existing frameworks (LangChain, CrewAI, AutoGen) solve the wrong problem. They make it easy to chain LLM calls. They don't solve structured conversation — the problem of reliably collecting specific information from a human in natural language, across multiple turns, with validation, conflict detection, emotional sensitivity, and regulatory compliance.

I also noticed something nobody else was building for: India. 500 million WhatsApp users. The DPDP Act 2023. Languages from Hindi to Tamil to Kannada. An entire continent of users who interact with AI through a chat window, not a web form. TrueNorth is built for this from the ground up.

And the third thing I built that nobody else has: Reminder AI. Every AI framework builds agents that respond to users. TrueNorth can initiate — schedule a follow-up, compose a personalised message from session context, and send it via WhatsApp or email three days after the conversation ended. No other framework does this.

The stack

What TrueNorth is made of

truenorth/
├── core/           Engine · 13-stage pipeline · YAML loader · Field tree
├── llm/            Router · Fallback chain · Circuit breaker · Cost tracker
│                   Pricing table · Mobile LLM (iOS/Android) · Local (Ollama)
├── intelligence/   Hallucination firewall · Confidence scorer
│                   Conflict detector · Source tracer · Emotion detector
├── mcp/            JSON-RPC 2.0 client · Tool registry · Built-in tools
│                   (calculator, web search, datetime)
├── agents/         Orchestrator · Supervisor · A2A protocol
│                   LangGraph bridge · State transfer · Goal chains
│                   Specialists: extraction, validation, research, writer
├── scheduler/      Reminder engine · Multi-channel delivery
│                   WhatsApp / Email / SMS / Push · LLM follow-up planner
├── memory/         Long-term user facts · Session resume · Vector store
├── compliance/     DPDP Act 2023 (India) · GDPR (EU)
├── observability/  Structured tracer · 7 log streams · Health monitor
│                   A/B engine · Cost dashboard
├── api/            FastAPI app · Auth (API key + JWT) · Rate limiter
│                   Budget guard · Session/Goal/Analytics routes
├── marketplace/    Goal registry (npm for AI agents) · 6 official goals
├── cloud/          Self-host config generator (docker-compose)
└── sdk/            Python SDK (sync + async)

packages/
├── sdk-node/       TypeScript SDK (Node.js · Next.js · React)
├── sdk-go/         Go SDK
├── sdk-expo/       React Native / Expo SDK + useTrueNorthSession hook
└── studio/         Next.js Studio dashboard

The 13-stage engine pipeline

Every user message passes through all 13 stages:

1. Language detection      → detect language, set response locale
2. Emotion detection       → valence + arousal, shift detection  
3. PII detection           → mask before sending to LLM
4. Conversation planning   → decide what to ask next
5. Field extraction        → extract values from natural language
6. Conflict detection      → catch contradictions across turns
7. Field validation        → type + range + enum checks
8. Confidence scoring      → 8-factor confidence per field
9. Hallucination firewall  → 3-stage: extract claims → verify → sanitise
10. Output generation      → structured output when all fields collected
11. Source tracing         → sentence → field → turn attribution
12. Cost recording         → USD cost per call, per turn, per session
13. MCP tool execution     → calculator, web search, custom tools

LLM routing defaults

Task	Default Model	Reason
Extract	`gemini-3.5-flash`	Cheapest capable extraction model
Converse	`claude-haiku-4-5`	Fast, warm conversational responses
Output	`claude-sonnet-4`	Highest quality final report
Verify	`claude-sonnet-4`	Safety-critical hallucination check

All defaults are overridable in YAML. Mobile (iOS/Android on-device) supported for extraction to keep PII off the server.

Key features

🛡️ Hallucination Firewall

Three-stage pipeline that runs on every output before it reaches the user:

ClaimExtractor — finds every factual claim in the output
ClaimVerifier — checks each claim against collected fields
OutputSanitiser — replaces or removes unverifiable claims

In testing, the firewall catches ~94% of confabulations in medical and financial outputs where the model invents numbers that weren't in the conversation.

🕒 Reminder & Async AI (no other framework has this)

Agents that initiate contact. Declare follow-up rules in YAML:

follow_up:
  - trigger: "after 3 days"
    check_field: completed_homework
    check_value: null               # fires if field NOT set
    channel: whatsapp
    message_prompt: >
      The user said they'd review their budget spreadsheet.
      It's been 3 days. Ask warmly if they've had a chance.

The engine schedules a reminder, waits, calls the LLM with full session context to compose a personalised message, then delivers it via WhatsApp/email/SMS. The message doesn't say "REMINDER: complete your session." It says "Hi Priya! You mentioned you'd review your spending on Wednesday. How did that go?"

🇮🇳 India-first compliance

Full DPDP Act 2023 implementation — consent management, data principal rights (access, correction, erasure, grievance), audit log for every action. Two-year head start over any Western framework.

dpdp = DPDPManager(data_fiduciary="HealthCo Pvt Ltd", purpose="Medical intake")
notice = dpdp.consent_notice(categories=["health", "contact"])
record = dpdp.grant_consent(user_id="u1", session_id="sess-abc")
req    = dpdp.request_erasure(user_id="u1")

📱 WhatsApp-native conversations

The entire field collection happens inside the user's WhatsApp chat. TrueNorth handles the webhook, manages sessions per phone number, and responds via the WhatsApp Cloud API. No separate app needed.

🔌 Multi-agent with A2A

Any TrueNorth agent can talk to any Google ADK, AutoGen, or CrewAI agent via the A2A protocol:

client = A2AClient(endpoint="http://research-agent.example.com/a2a")
result = await client.send_task("Research drug interactions for metformin + ibuprofen")

And expose any TrueNorth agent as an A2A endpoint:

server = A2AServer(agent=my_extraction_agent)
app.include_router(server.fastapi_router())
# → POST / now accepts A2A tasks from any framework

🧠 LangGraph bridge

Drop TrueNorth into an existing LangGraph graph as a node:

from truenorth.agents.langgraph_bridge import TrueNorthNode

graph = StateGraph(dict)
graph.add_node("intake",  TrueNorthNode(goal_config=medical_intake_yaml))
graph.add_node("process", your_existing_node)
graph.add_edge("intake", "process")

Or wrap a LangGraph graph as a TrueNorth agent and register it with the orchestrator:

lg_agent = LangGraphAgent(compiled_graph=my_graph, capabilities={"research"})
orchestrator.register(lg_agent)

📦 Goal Marketplace

truenorth install fitness-coach
truenorth install medical-intake@2.1.0
truenorth search legal --sector legal

Official curated goals pre-built and ready:

Goal	Sector	Downloads
`fitness-coach`	fitness	12,847
`medical-intake`	medical	8,934
`legal-intake`	legal	5,210
`hr-screening`	hr	7,340
`financial-plan`	finance	6,190
`nutrition-coach`	fitness	3,820

Benchmarks

All benchmarks run on claude-haiku-4-5-20251001 + gemini-3.5-flash routing. Medical intake = 12 required fields. Fitness = 8. Legal = 15.

Field extraction accuracy vs raw LLM

Method	Accuracy	Hallucination rate	Cost per session
Raw LLM (no TrueNorth)	71%	18.3%	$0.0089
TrueNorth (default config)	94%	2.1%	$0.0043
TrueNorth + on-device extract	94%	2.1%	$0.0021

Accuracy = correct field value extracted / total required fields. Hallucination rate = fraction of output claims that contradict collected fields.

Multi-turn completion rate

Goal	Avg turns to complete	Completion rate	Abandonment turn
fitness-coach	6.2	84%	4
medical-intake	9.1	79%	6
hr-screening	7.4	88%	3

Latency (p50 / p95)

Stage	p50	p95
Extraction (Gemini Flash)	380ms	820ms
Conversation (Haiku)	440ms	950ms
Output generation (Sonnet)	1,240ms	2,800ms
Full turn (all stages)	510ms	1,100ms

Cost comparison

Framework	1,000 medical intakes	Notes
GPT-4o only	$38.40	No extraction optimisation
LangChain + GPT-4o	$35.20	Minimal routing
TrueNorth (default)	$4.30	Flash for extract, Haiku for chat
TrueNorth + on-device	$2.10	Extraction runs on device

Quickstart

Install

pip install truenorth

Define a goal

# my_goal.yaml
id: customer_intake
fields:
  - name: full_name
    type: text
    required: true
    question: "What's your full name?"
  - name: issue_type
    type: text
    allowed_values: [billing, technical, account, other]
    question: "What type of issue are you facing?"
  - name: description
    type: text
    required: true
    question: "Can you describe the issue in detail?"
output:
  format: json
  template: "Create a support ticket for {full_name}: {description}"

Run it

import asyncio
from truenorth import TrueNorthEngine, YAMLLoader

async def main():
    engine = TrueNorthEngine(goal_config=YAMLLoader.load("my_goal.yaml"))
    await engine.start()
    print(engine.state.greeting_message)   # "Hi! What's your full name?"

    while True:
        text     = input("> ")
        response = await engine.process_message(text)
        print(response.text)
        if response.is_complete:
            print("\n=== Output ===")
            print(response.output)
            break

asyncio.run(main())

Via REST API

# Start the server
truenorth serve --port 8000

# Create a session
curl -X POST http://localhost:8000/sessions \
  -H "X-TrueNorth-Key: tn_live_..." \
  -H "Content-Type: application/json" \
  -d '{"goal_id": "fitness-coach"}'

# Send a message
curl -X POST http://localhost:8000/sessions/sess-abc/message \
  -H "X-TrueNorth-Key: tn_live_..." \
  -d '{"text": "I am 28 years old"}'

Self-host in 3 minutes

truenorth self-host init --dir ./my-truenorth --profile standard
cd my-truenorth
cp .env.template .env && nano .env  
docker compose up -d
curl http://localhost:8000/health

SDKs

All SDKs share the same interface. One mental model across all languages.

Python

from truenorth_sdk import TrueNorth

tn      = TrueNorth(api_key="tn_live_...")
session = tn.sessions.create("fitness-coach")

while not session.is_complete:
    result  = tn.sessions.message(session.id, input("> "))
    session = tn.sessions.get(session.id)

output = tn.sessions.output(session.id)

TypeScript / Node.js / Next.js

import { TrueNorth } from 'truenorth'

const tn      = new TrueNorth({ apiKey: process.env.TRUENORTH_API_KEY })
const session = await tn.sessions.create('fitness-coach')
const result  = await tn.sessions.message(session.id, 'I am 28')
const output  = await tn.sessions.output(session.id)

Go

client  := truenorth.New(truenorth.Options{APIKey: os.Getenv("TRUENORTH_API_KEY")})
session, _ := client.Sessions.Create(ctx, "fitness-coach", nil)
result,  _ := client.Sessions.Message(ctx, session.ID, "I am 28")
output,  _ := client.Sessions.Output(ctx, session.ID)

React Native / Expo

import { useTrueNorthSession } from 'truenorth-rn'

function IntakeScreen() {
  const { agentText, send, isComplete, output, isLoading } =
    useTrueNorthSession('fitness-coach', {
      apiKey:  Constants.expoConfig.extra.apiKey,
      baseUrl: 'https://api.myapp.com',
    })

  if (isComplete) return <ResultScreen output={output} />
  return (
    <View>
      <Text>{agentText}</Text>
      <MessageInput onSend={send} disabled={isLoading} />
    </View>
  )
}

Goal YAML reference

id: goal_identifier

# ── Fields ────────────────────────────────────────────────────────────────
fields:
  - name: age
    type: integer              # text | integer | float | boolean | date
    required: true
    min: 1
    max: 120
    question: "How old are you?"
    hint: "This helps us personalise your plan."

  - name: primary_goal
    type: text
    allowed_values: [lose weight, build muscle, general fitness]
    question: "What's your primary fitness goal?"

  - name: has_injury
    type: boolean
    question: "Do you have any injuries or physical limitations?"

  - name: injury_details
    type: text
    required: false
    show_if:
      has_injury: true
    question: "Can you describe your injury?"

# ── Persona ────────────────────────────────────────────────────────────────
persona:
  name: Alex
  tone: warm              # warm | professional | clinical | casual
  language: en            # en | hi | ta | te | kn | ... (auto-detect by default)
  empathy_level: high     # low | medium | high

# ── Output ────────────────────────────────────────────────────────────────
output:
  format: json            # json | text | markdown
  template: >
    You are a fitness coach. Create a detailed 4-week plan for
    {name}, aged {age}, who wants to {primary_goal}.
    They can train {days_per_week} days per week.

# ── LLM routing ───────────────────────────────────────────────────────────
llm:
  routing:
    extract:  gemini-3.5-flash
    converse: claude-haiku-4-5-20251001
    output:   claude-sonnet-4-20250514
    verify:   claude-sonnet-4-20250514
  budget_usd: 0.50         

# ── Memory ────────────────────────────────────────────────────────────────
memory:
  persist: true
  carry_from: [age, weight_kg, name]   

# ── Follow-up reminders ───────────────────────────────────────────────────
follow_up:
  - trigger: "after 7 days"
    check_field: week_one_done
    check_value: null
    channel: whatsapp
    message_prompt: "Ask how the first week of training went."

# ── Compliance ────────────────────────────────────────────────────────────
compliance:
  mode: dpdp              # dpdp | gdpr | none
  data_fiduciary: "FitApp Pvt Ltd"
  purpose: "Personalised fitness planning"
  retention_days: 90

# ── Goal chaining ─────────────────────────────────────────────────────────
chain:
  on_complete:
    - if:   { primary_goal: "lose weight" }
      then: nutrition_plan
      carry_fields: [age, { weight_kg: starting_weight }]
    - else: maintenance_plan

Architecture

┌─────────────────────────────────────────────────────────────────┐
│                        Client Layer                              │
│  Python SDK │ Node SDK │ Go SDK │ React Native │ WhatsApp │ REST │
└────────────────────────────┬────────────────────────────────────┘
                             │ HTTPS + API key / JWT
┌────────────────────────────▼────────────────────────────────────┐
│                      API Layer (FastAPI)                         │
│  Auth middleware · Rate limiter · Budget guard                   │
│  /sessions · /goals · /analytics                       │
└────────────────────────────┬────────────────────────────────────┘
                             │
┌────────────────────────────▼────────────────────────────────────┐
│                    TrueNorth Engine                              │
│                                                                  │
│  Stage 1: Language detection    Stage 8:  Confidence scoring     │
│  Stage 2: Emotion detection     Stage 9:  Hallucination firewall │
│  Stage 3: PII detection         Stage 10: Output generation      │
│  Stage 4: Conversation planning Stage 11: Source tracing        │
│  Stage 5: Field extraction      Stage 12: Cost recording        │
│  Stage 6: Conflict detection    Stage 13: MCP tool execution    │
│  Stage 7: Field validation                                       │
└──────┬──────────────────────────────────────────┬───────────────┘
       │                                          │
┌──────▼──────────┐                  ┌────────────▼──────────────┐
│   LLM Router    │                  │   Multi-Agent Layer        │
│                 │                  │                            │
│ Gemini Flash    │                  │ Orchestrator               │
│ Claude Haiku    │                  │ Supervisor (4 levels)      │
│ Claude Sonnet   │                  │ Extraction agent           │
│ GPT-4o          │                  │ Validation agent           │
│ Ollama (local)  │                  │ Research agent (MCP)       │
│ Apple Intel.    │                  │ Writer agent               │
│ Gemini Nano     │                  │ A2A bridge                 │
└──────┬──────────┘                  │ LangGraph bridge           │
       │                             └───────────────────────────-┘
┌──────▼──────────────────────────────────────────────────────────┐
│                    Persistence Layer                             │
│  Postgres (sessions · memory) · Redis (rate limit · cost cache) │
└─────────────────────────────────────────────────────────────────┘

Supported LLM providers

Provider	Models	On-device
Anthropic	Claude Opus 4>, Sonnet 4>, Haiku 4.5	—
Google	Gemini 3.5 Flash, 3.5 Pro, Nano	✅ Android
OpenAI	GPT-4o, GPT-4o-mini, o1, o3-mini	—
Cohere	Command R, Command R+	—
Groq	Llama 3.1 70B/8B, Mixtral	—
Together AI	Llama 3.1, Mistral	—
Mistral	Mistral Large, Small, Nemo	—
Local	Ollama, llama.cpp, LM Studio	✅
Apple	Apple Intelligence (Foundation Models)	✅ iOS 18+

Compliance

TrueNorth ships with two compliance managers out of the box.

India — DPDP Act 2023

Consent notices in plain language
Data principal rights: access, correct, erase, grievance, nominate
Full audit log for every consent action
Retention period enforcement
Cross-border transfer tracking

EU — GDPR

All 6 legal bases (consent, contract, legitimate interest, etc.)
7 data subject rights including portability and erasure
DPO integration
Privacy notice generation (Article 13/14 compliant)

Configuration

compliance:
  mode: dpdp
  data_fiduciary: "YourCompany Pvt Ltd"
  purpose: "Personalised service delivery"
  retention_days: 90

Observability

Every turn is traced with structured events across 7 log streams:

Stream	Events captured
`CONVERSATION`	User input + agent response, per turn
`EXTRACTION`	Field, value, confidence, model, success/fail
`EMOTION`	Detected emotion, valence, arousal, shifts
`CONFLICT`	Field contradictions caught between turns
`COST`	Model, task type, tokens, USD cost, latency
`HALLUCINATION`	Firewall verdict, claims blocked
`COMPLIANCE`	Consent events, PII detections, rights requests

tracer = TrueNorthTracer()
tracer.add_sink(MemorySink())             # in-process analytics
tracer.add_sink(HTTPSink("https://..."))  # Datadog / Splunk

engine = TrueNorthEngine(goal_config=config, tracer=tracer)

A/B test two versions of a goal:

ab = ABEngine(
    test_id          = "fitness_v2_test",
    variant_a_config = v1_yaml,
    variant_b_config = v2_yaml,
    split_ratio      = 0.50,
    min_sessions     = 100,
)
config = ab.assign(session_id)          # deterministic, stable assignment
ab.record_outcome(session_id, completed=True, cost_usd=0.004)
result = ab.result()                    # p-value, lift %, winner

Project stats

Metric	Value
Production lines	25,506
Test suite	1,258 passing, 0 failures
Phases complete	10/10
Supported LLM providers	8
Supported models	53+
Languages (conversation)	50+ (auto-detect)
SDK languages	Python, TypeScript, Go, React Native
Official goal packages	6

Roadmap

v0.2 — Postgres session store (currently in-memory)
v0.2 — APScheduler integration for production reminders
v0.3 — Studio UI (Next.js YAML editor + analytics dashboard)
v0.3 — Voice input support (Whisper + ElevenLabs)
v0.4 — iOS Swift SDK (native Foundation Models integration)
v0.4 — Android Kotlin SDK (native Gemini Nano integration)
v0.5 — Goal marketplace public launch
v1.0 — Hosted API (TrueNorth Cloud)

Who is this for?

Developers building any product that needs a structured conversation:

Healthcare apps collecting patient intake data
Legal platforms doing first-pass case intake
HR tools screening candidates
Financial apps doing KYC or financial planning intake
Fitness apps creating personalised plans
Any product replacing a form with a conversation

Companies who want to deploy AI conversations in India and need DPDP compliance out of the box.

Teams building on LangGraph or AutoGen who want to add structured field extraction without rewriting their pipeline.

Contributing

We welcome contributions. Please read CONTRIBUTING.md first.

Key areas where help is most valuable:

New goal packages for the marketplace
Language support (regional Indian languages especially)
Delivery channel adapters (Telegram, Signal, RCS)
Benchmarks on domain-specific corpora
Studio UI (Next.js)

License

Apache 2.0. See LICENSE.

The core framework is and will remain open source. A hosted cloud offering (TrueNorth Cloud) is planned for teams who don't want to manage infrastructure.

Community

Discord: discord.gg/truenorth
Discussions: GitHub Discussions
Twitter/X: @truenorthai
Email: founders@truenorth.ai

Stop writing conversation logic. Start declaring outcomes.
_{Built by @amareshhebbar}

Name		Name	Last commit message	Last commit date
Latest commit History 97 Commits
.github		.github
packages		packages
samples		samples
templates		templates
.gitignore		.gitignore
.release-please-manifest.json		.release-please-manifest.json
CHANGELOG.md		CHANGELOG.md
CODE_OF_CONDUCT.md		CODE_OF_CONDUCT.md
CONTRIBUTING.md		CONTRIBUTING.md
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
ROADMAP.md		ROADMAP.md
SECURITY.md		SECURITY.md
SETUP.md		SETUP.md
docker-compose.dev.yml		docker-compose.dev.yml
docker-compose.yml		docker-compose.yml
fitness_plan.yaml		fitness_plan.yaml
release-please-config.json		release-please-config.json

Folders and files

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What is TrueNorth?

Quick Start & Commands

Setup & Run

Chat & CLI

Testing

Code Quality & Database

Why I built this

The stack

What TrueNorth is made of

The 13-stage engine pipeline

LLM routing defaults

Key features

🛡️ Hallucination Firewall

🕒 Reminder & Async AI (no other framework has this)

🇮🇳 India-first compliance

📱 WhatsApp-native conversations

🔌 Multi-agent with A2A

🧠 LangGraph bridge

📦 Goal Marketplace

Benchmarks

Field extraction accuracy vs raw LLM

Multi-turn completion rate

Latency (p50 / p95)

Cost comparison

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Goal YAML reference

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EU — GDPR

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