What inputs does verify_fact_lineage accept?

ticker (string, required): Stock ticker symbol, e.g. AAPL, MSFT, BRK.B fact_id (string, required): The deterministic fact identity hash: SHA-256(entity_id|accession_id|concept|period_end|unit). 64-character lowercase hex string.

Which Valuein plans include verify_fact_lineage?

Available on every plan, including the free tier with no account. Point-in-time safe via as_of_date filtering.

Analysis

PIT-safe

Verify Fact Lineage

verify_fact_lineage

Sample and above

Use this tool when the user asks BOTH what a financial figure is AND which filing reported it — e.g. \

Example Call

example_call.pypython

# Using the Valuein MCP server from Python (via MCP SDK)# Or call directly from Claude / Cursor after setup result = await client.call_tool(    "verify_fact_lineage",    arguments={    "ticker": "EXAMPLE",    "fact_id": "EXAMPLE"})print(result)

Direct tool call:verify_fact_lineage(ticker="AAPL", fact_id="a7b3c9d2...64charsha256")

Try it now

No token required

Paste this in your terminal — the free tier returns real S&P500 data without authentication.

try-it.shbash

# No auth required — the Sample tier covers S&P 500 constituents with a 5-year window.# Add -H "Authorization: Bearer $VALUEIN_TOKEN" for the full universe and history.curl -X POST https://mcp.valuein.biz/mcp \    -H "Content-Type: application/json" \    -H "Accept: application/json, text/event-stream" \    -d '{        "jsonrpc": "2.0",        "id": 1,        "method": "tools/call",        "params": {          "name": "verify_fact_lineage",          "arguments": {            "ticker": "AAPL",            "fact_id": "AAPL"          }        }      }'

Inputs

Parameter	Type	Required	Description
`ticker`	string	required	Stock ticker symbol, e.g. AAPL, MSFT, BRK.B
`fact_id`	string	required	The deterministic fact identity hash: SHA-256(entity_id\|accession_id\|concept\|period_end\|unit). 64-character lowercase hex string.

Output Fields

fact_identity_idconceptstandard_concepttickercompany_nameaccession_idnumeric_valuedisplayderived_quarterly_valuederived_quarterly_displayunitperiod_startperiod_endperiod_span_daysperiod_typeform_typefiling_dateaccepted_atsource_urlinline_viewer_urldocument_url

Example Response

Illustrative

response.jsonjson

{  "fact_id": null,  "entity_id": "0000320193",  "concept": null,  "standard_concept": null,  "ticker": "AAPL",  "company_name": "Apple Inc.",  "accession_id": "0000320193-24-000006",  "numeric_value": 394328000000}

Shape only — field names match the live schema; values are placeholders, not real filings. Returns the entity, concept, value, filing accession, and source EDGAR URL for the fact identified by the hash.

Notes

fact_id is SHA-256(entity_id|accession_id|concept|period_end|unit). Enables auditors and agents to trace any number in a report back to its source filing.