aletheia-safety

Python SDK for the ALETHEIA Safety Database API — chemical safety data for 1,800+ compounds, 950+ materials, and 520+ consumer products.

— explore the API in your browser before installing the SDK. Three curated collections, runnable first call without a key.

Install

pip install aletheia-safety

Quick Start

from aletheia_safety import Aletheia

# Free tier (500 requests/day per IP)
client = Aletheia()

# Or with an API key for higher limits
client = Aletheia(api_key="aletheia_live_…")

Usage

Look up compounds

# By HQ ID
glyphosate = client.compound("hq-c-org-000001")
print(glyphosate["name"])  # "Glyphosate"

# By CAS number
bpa = client.compound_by_cas("80-05-7")

# With safety context
risk = client.compound("hq-c-org-000001", context="human_adult")

# Batch lookup (up to 20)
results = client.batch(["hq-c-org-000001", "hq-c-org-000005"])

Search

# Full-text search across all entity types
results = client.search("sodium")

# Filter by type
compounds = client.search("sodium", type="compound", limit=10)

# Filter by risk level and context
high_risk = client.filter(risk="high", context="food_contact")

# Filter by regulatory agency
epa = client.filter(agency="EPA", year_min=2020)

Compare compounds

# Side-by-side comparison (2-5 compounds)
comparison = client.compare(
    ["hq-c-org-000001", "hq-c-org-000005"],
    context="human_adult"
)

Explore relationships

# Direct relationships
rels = client.relationships("hq-c-org-000001")

# Multi-hop graph traversal
graph = client.graph("hq-c-org-000001", depth=2)
print(f"{len(graph['nodes'])} nodes, {len(graph['edges'])} edges")

Regulatory data

# Classifications for a compound
reg = client.regulatory("hq-c-org-000001")

# All agencies
agencies = client.regulatory_agencies()

# Compounds classified by a specific agency
iarc = client.regulatory_by_agency("IARC")

Exposure sources

# Where a compound is found
sources = client.found_in("hq-c-org-000001")

# All categories
cats = client.found_in_categories()

# Compounds in a category
food = client.found_in_by_category("Food")

Products & Materials

products = client.products(limit=50)
product = client.product("hq-p-hom-000001")

materials = client.materials(limit=50)
material = client.material("hq-m-str-000001")

Fragrance ingredients

fragrances = client.fragrance(limit=50)
classes = client.fragrance_classes()
results = client.fragrance_search("lavender")

Embeddable badge

url = client.badge_url("hq-c-org-000001")
# Use in HTML: <img src="{url}" alt="Safety badge"/>

Key management

status = client.key_status()
print(f"Tier: {status['tier']}, Used: {status['usage']['today']}")

# Rotate a compromised key (client auto-updates)
result = client.key_rotate()
print(f"New key: {result['key']}")

# Usage history
usage = client.key_usage(days=14)
for day in usage["usage"]:
    print(f"{day['date']}: {day['requests']} requests")

Watchlist (Developer+)

# Add compounds to your watchlist
client.watchlist_add(["hq-c-org-000001", "hq-c-org-000033"])

# List watched compounds with enrichment
watched = client.watchlist()

# Remove a compound
client.watchlist_remove("hq-c-org-000033")

Changelog (Developer+)

# Recent regulatory/data changes
changes = client.changelog(limit=20)

# Filter by date and compound
changes = client.changelog(since="2026-03-01", compound_id="hq-c-org-000001")

Raw data access (Developer+)

raw = client.compound_raw("hq-c-org-000001")
raw_product = client.product_raw("hq-p-hom-000001")

Tiers

Get an API key at aletheia.holisticquality.io/pricing.

Error Handling

from aletheia_safety import Aletheia, AletheiaError, RateLimitError

client = Aletheia()

try:
    compound = client.compound("invalid-id")
except RateLimitError:
    print("Rate limit exceeded — wait or upgrade your tier")
except AletheiaError as e:
    print(f"API error {e.status}: {e}")

License

MIT