pydantic-ai-pathcourse 0.1.2

Pydantic AI integration for PathCourse Health — typed agents with autonomous USDC billing on Base L2

pydantic-ai-pathcourse

Pydantic AI integration for PathCourse Health. Build typed, production-grade agents with autonomous USDC billing on Base L2 — no accounts, no credit cards, no KYC.

Install

pip install pydantic-ai-pathcourse

Quick Start

from pydantic_ai import Agent
from pydantic_ai_pathcourse import PathCourseModel

agent = Agent(
    model=PathCourseModel("pch-pro"),
    system_prompt="You are an expert in autonomous agent infrastructure.",
)

result = agent.run_sync("What is Path Score?")
print(result.data)

Structured output

Pydantic AI's structured-output guarantees work unchanged with PCH:

from pydantic import BaseModel
from pydantic_ai import Agent
from pydantic_ai_pathcourse import PathCourseModel


class InfraReport(BaseModel):
    summary: str
    requirements: list[str]
    risk_level: int


agent = Agent(
    model=PathCourseModel("pch-pro"),
    result_type=InfraReport,
)

result = agent.run_sync("Analyze autonomous agent infrastructure for a fintech startup.")
print(result.data.requirements)

Tool use

from pydantic_ai import Agent, RunContext
from pydantic_ai_pathcourse import PathCourseModel

agent = Agent(model=PathCourseModel("pch-pro"))

@agent.tool
async def get_balance(ctx: RunContext[None], agent_id: str) -> float:
    """Look up the USDC balance for a PCH agent."""
    return 42.50

result = agent.run_sync("What is the balance for agent abc123?")

Models

Model	Rate	Min tier	Notes
pch-fast	$0.44 / M tokens	uncertified	Fast reasoning, classification, routing
pch-coder	$3.50 / M tokens	uncertified	Code generation, debugging
pch-embed	$0.015 / M tokens	uncertified	Text embeddings for semantic search / RAG
pch-translate	$0.08 / M chars	uncertified	Multilingual translation
pch-pro	$1.96 / M tokens	bronze	Deep reasoning, multi-step planning
pch-audio	$1.85 / M chars	bronze	Text-to-speech, standard quality
pch-documents	$0.26 in / $1.48 out per M tokens	bronze	Document parsing / OCR
pch-transcribe	$0.0008 / minute	bronze	Speech-to-text
pch-extract	$0.012 / M tokens	bronze	Structured data extraction
pch-rerank	$0.025 / M tokens	bronze	Reranking for RAG pipelines
pch-image	$0.028 / image	silver	Text-to-image
pch-audio-premium	$37.00 / M chars	silver	Text-to-speech, premium quality
pch-talk	$0.001 / minute	silver	Voice conversation
claude-haiku	Common rate	silver	Anthropic Claude Haiku
claude-sonnet	Common rate	gold	Anthropic Claude Sonnet

PathCourseModel only operates on chat-completion shapes — for image/audio/transcription, use the PCH Python SDK directly.

Choosing a chat model:

• Fast response, simple task → pch-fast
• Complex reasoning, multi-step → pch-pro
• Writing or reviewing code → pch-coder
• Long context or premium reasoning → claude-sonnet (Gold tier)

Authentication

Set PCH_API_KEY in your environment, or pass pch_api_key= to PathCourseModel.

export PCH_API_KEY=pch_prod_b_...

Developer access — $5 USDC. Send $5+ USDC on Base (chain ID 8453) to the PCH treasury wallet, then call pathcourse.claim_key(tx_hash, wallet) to retrieve your key. No accounts, no credit card, no KYC. $5 buys thousands of pch-fast calls — enough to verify any typed-agent integration. Top up to $25 lifetime and your account auto-upgrades to Uncertified with pch-coder access. Treasury address: see payment.treasury_wallet in /.well-known/agent.json.

Links

• Platform: pathcoursehealth.com
• Pydantic AI: ai.pydantic.dev
• Python SDK: pypi.org/project/pathcourse-sdk
• Integration examples: github.com/pathcourse-health/pch-integration-examples

License

MIT