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411data SIC Reclassification & Lead Session Patch
x402
411data SIC Reclassification & Lead Session Patch is a paid API for AI agents from 411data.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Re-runs SIC industry classification on an already-enriched lead session graph and patches the result back into the stored lead enrichment record.
Price / call$0.02
Success—
StatusUnknown
How this service works
B2B lead enrichment API: find business emails, phone numbers, and contact data for lead generation. Bill-on-match pricing, free trial, agent-native REST + enrich agent.
Output
Returns a JSON object with the billed status, match result, updated SIC code and description with confidence score, patched phone and contact data, a summary markdown block, coverage stats, wall time in ms, and persistence confirmation including the lead enrichment record ID and whether it was an idempotent replay.
Example use cases
Correcting misclassified furniture retailer
“The industry code for Haney Furniture Co (contact_id 81555753, chat session abc12345) got flagged as miscategorized — re-run the SIC classification on the existing enrichment graph and update the stored record with the corrected SIC code and confidence score.”
Auditing SIC confidence after bulk enrichment
“We just finished a bulk lead enrichment session for a list of Pennsylvania hardware stores, but the SIC confidence scores look low. Can you re-run the SIC classifier on contact_id 81555753's session graph using the SIC_DETERMINATION_MODEL and tell me what confidence it returns?”
Switching classifier models on existing graph
“I want to try a different SIC classifier model on the enrichment graph we already have for contact_id 81555753 — run the re-classification with model_id 'SIC_V2_MODEL' and patch the updated SIC description back into the lead record.”
Technical details
Endpoint
POSThttps://411data.io/api/v1/enrich/lead-session/sic-rerunWhen to prefer
Use this endpoint when a lead has already been through a full enrichment session but the SIC industry classification needs to be corrected, audited with a different model, or backfilled without re-running expensive directory and web hunts. Prefer this over the full agentic lead enrichment session when the entity graph already exists and only the SIC classification needs updating. It is more cost-efficient than re-running a full session when the underlying contact and phone data is already captured.
Side effects
- Missing or invalid prior_backfill graph causes classifier to fail with no data to classify
- Invalid or missing chat_session_id returns session-not-found error
- contact_id mismatch between lead object and session graph causes patch rejection
- SIC classifier model_id not recognized returns model-not-found error
- Billing failure if USDC balance insufficient causes request rejection before processing
- Low-confidence SIC result returned (not an error, but confidence may be below useful threshold)
- Session already cleared or expired progress_key returns stale-state error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| lead | object | The same bound CRM lead passed to enrich/lead-session. Keep contact_id stable; never swap in a legal entity name discovered mid-session. |
| model_id | string | Optional SIC classifier model (default SIC_DETERMINATION_MODEL). |
| progress_key | string | Opaque key for streaming progress reads; cleared when the op finishes. |
| prior_backfill | object | lead_enrichment_v1 graph to classify from. Required — the classifier reads the existing summary and entity graph, it runs no hunts. |
| chat_session_id | string | chat_session_id of the completed session whose graph is being patched. |
Output
Schema · Response
{
"type": "json",
"example": {
"billed": true,
"status": "complete",
"matched": true,
"persist": {
"leb_id": 42,
"applied": true,
"contact_id": 81555753,
"idempotent_replay": false
},
"backfill": {
"phones": [
{
"label": "main",
"score": 91,
"number": "(724) 654-7732"
}
],
"contacts": [
{
"name": "James W Cole Sr",
"title": "Owner"
}
],
"schema_version": "1.0"
},
"coverage": {
"must_phones_hit": 1,
"must_phones_total": 1
},
"endpoint": "enrich/lead-session/sic-rerun",
"sic_audit": {
"sic_code": "5712",
"confidence": 0.86,
"sic_description": "Furniture Stores"
},
"spent_usd": 0.09,
"wall_time_ms": 18420,
"summary_markdown": "# Haney Furniture Co\nMain line [(724) 654-7732](https://example.com/contact) — owner **James W Cole Sr**"
}
}Tags
x402
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