GoldenMatch API quick reference

from goldenmatch import AgentSession

session = AgentSession()
result = session.autoconfigure("customers.csv")
# result["config"]:    GoldenMatchConfig as JSON-safe dict
# result["telemetry"]: stop_reason, health, decisions, NE fields, column_priors
# session.last_telemetry is set; also persists after deduplicate / match_sources

# Same JSON shape exposed by:
# - web   GET /api/v1/controller/telemetry
# - CLI   goldenmatch autoconfig (stderr panel)
# - REST  POST /autoconfig  +  GET /controller/telemetry
# - MCP   auto_configure tool result
# - A2A   autoconfig skill result
# - SQL   goldenmatch_autoconfig_telemetry() / gm_telemetry()

import goldenmatch

result = goldenmatch.dedupe_df(
    df,
    config=None,              # GoldenMatchConfig or None
    exact=["email"],          # exact match columns
    fuzzy={"name": 0.85},     # fuzzy match with thresholds
    blocking=["zip"],         # blocking keys
    threshold=0.85,           # overall fuzzy threshold
    llm_scorer=False,         # enable LLM for borderline pairs
)

result.golden          # pa.Table | None - canonical records with __cluster_id__ (v3: pl.from_arrow(...) for a Polars frame)
result.dupes           # pa.Table | None - duplicate records with __row_id__
result.unique          # pa.Table | None - non-duplicate records
result.clusters        # dict[int, dict] - {cluster_id: {"members": [row_ids], "pair_scores": {(a,b): score}}}
result.scored_pairs    # list[tuple[int, int, float]] - all matched pairs
result.stats           # dict - total_records, total_clusters, matched_records, match_rate
result.total_records   # int
result.total_clusters  # int
result.match_rate      # float

# WRONG:
StandardizationConfig(email=["email"], phone=["phone"])

# RIGHT:
StandardizationConfig(rules={
    "email": ["email"],
    "phone": ["phone"],
    "first_name": ["strip", "name_proper"],
})

# multi_pass requires `keys` OR `passes` (at least one must be set)
BlockingConfig(
    strategy="multi_pass",
    passes=[
        BlockingKeyConfig(fields=["email"], transforms=["lowercase"]),
        BlockingKeyConfig(fields=["last_name"], transforms=["soundex"]),
    ],
)

MatchkeyConfig(
    name="identity",       # required!
    type="weighted",
    threshold=0.75,
    fields=[...],
)

pairs = []
for cluster in result.clusters.values():
    members = sorted(cluster["members"])
    for i in range(len(members)):
        for j in range(i + 1, len(members)):
            pairs.append((members[i], members[j]))

# Pass 1: exact email (identical-email dupes)
# Pass 2: soundex last_name (phonetic variants: Smith/Smyth)
# Pass 3: first 3 chars of last_name (typo dupes: Johm/John)
BlockingConfig(
    strategy="multi_pass",
    keys=[BlockingKeyConfig(fields=["email"], transforms=["lowercase", "strip"])],
    passes=[
        BlockingKeyConfig(fields=["email"], transforms=["lowercase", "strip"]),
        BlockingKeyConfig(fields=["last_name"], transforms=["soundex"]),
        BlockingKeyConfig(fields=["last_name"], transforms=["substring:0:3"]),
    ],
)

from goldenmatch.config.schemas import LLMScorerConfig, BudgetConfig

config.llm_scorer = LLMScorerConfig(
    enabled=True,
    candidate_lo=0.60,    # send pairs scoring 0.60-0.90 to LLM
    candidate_hi=0.90,
    auto_threshold=0.90,  # auto-accept above 0.90
    budget=BudgetConfig(max_calls=500, max_cost_usd=1.0),
)
# Requires OPENAI_API_KEY or ANTHROPIC_API_KEY in environment