SEC Filing API Reference

Get started

Quickstart

Three steps from zero to your first response. Most data calls return in under 300 ms.

Step 1
Create a key
Open the API console and create a key. It is shown once, so store it as SIGNALX_API_KEY.
API console
Step 2
Add credits
Top up from $5. 1 credit = $0.10. Credits never expire and failed requests are refunded.
Buy credits
Step 3
Call the API
Every endpoint is plain HTTPS + JSON. Start with a company overview below.
Company overview

Your first request

curl "https://api.signal-x.app/v1/companies/NVDA" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Get started

Authentication

Send your key as a Bearer token on every request. Keys start with sk_live_ and are stored only as a hash, so we cannot show a key again after you create it.

Authorization: Bearer sk_live_••••••••••••••••••••••••

Up to 5 keys per account. Deleting a key in the console takes effect within 30 seconds.
Call the API from your server. A key in browser or mobile code can be copied and spent by anyone.
Balance and usage are tied to your account, not the key, so rotating keys keeps your credits.

Get started

Requests & headers

Base URL https://api.signal-x.app, JSON in and out, UTF-8. Data endpoints share one response shape: { object, data, citations, usage, request_id }.

Idempotent retries

Add an Idempotency-Key header (8-128 chars, a UUID works) to POST requests. If the network drops and you retry with the same key, you get the original answer back with Idempotent-Replayed: true and are charged once. While the first call is still running, a retry gets 409.

Pagination

List endpoints that page return has_more and next_cursor. Pass the cursor back as starting_after. Feeds such as 8-K events use days and limit instead.

Response header	Meaning
`X-Request-ID`	On every response. Send your own (letters, digits, `._:-`, up to 128) to trace a call end to end.
`SignalX-Version`	API version date, currently `2026-10-03`. Breaking changes ship under a new date.
`X-RateLimit-Limit · -Remaining · -Reset`	Per-minute budget, what is left, and when it refills (Unix seconds).
`X-RateLimit-Daily-Limit · -Daily-Remaining`	Rolling 24-hour budget.
`Retry-After`	Seconds to wait, on 429 responses.
`Idempotent-Replayed`	`true` when a response was replayed for a repeated Idempotency-Key.

Get started

Errors

Errors use standard HTTP status codes and one JSON envelope. Branch on type, handle specific cases with code, and quote request_id when you contact support. Whenever a request fails on our side, its credits are returned.

404 · error envelope

{
  "error": {
    "type": "not_found_error",
    "code": "company_not_found",
    "message": "Company not found: ZZZZ",
    "param": "ticker",
    "request_id": "req_5f1c9a2e7b40d3a1c8e6f902",
    "doc_url": "https://signal-x.app/api-docs#errors"
  }
}

Status	type · code	When
400	`invalid_request_error`invalid_request · invalid_date · invalid_ticker · invalid_cursor	A parameter is malformed.
401	`authentication_error`missing_api_key · invalid_api_key · api_key_revoked	No key, a wrong key, or a deleted key.
402	`billing_error`insufficient_credits	Balance too low. The error carries `balance_credits` and `purchase_url`.
404	`not_found_error`company_not_found · not_found	Unknown ticker, CIK or resource. Credits are returned.
409	`idempotency_error`idempotency_in_progress · idempotency_key_reused	The Idempotency-Key is running or was already used.
422	`invalid_request_error`validation_failed	Body or query failed validation. `param` names the field.
429	`rate_limit_error`rate_limit_exceeded	Too many requests. Wait `Retry-After` seconds.
502	`api_error`data_unavailable	A data source failed. Credits are returned.
503	`api_error`agent_unavailable · search_unavailable · billing_unavailable	Temporary outage. Credits are returned; retry with backoff.
504	`api_error`timeout	The answer took over 120 s (240 s streaming). Credits are returned.

Get started

Rate limits

Limits apply per key and follow your SignalX plan. Every response tells you where you stand; a 429 tells you exactly how long to wait.

Plan	Per minute	Per day
Free	60	10,000
Pro	120	20,000
Premium	300	50,000

429 · rate limited

HTTP/1.1 429 Too Many Requests
Retry-After: 17
X-RateLimit-Limit: 60
X-RateLimit-Remaining: 0
X-RateLimit-Reset: 1791043217
X-Request-ID: req_5f1c9a2e7b40d3a1c8e6f902

Back off for Retry-After seconds, then retry. Counters live on each API server, so under heavy parallel load the effective limit can be slightly higher; design for the numbers above.

Get started

Pricing

Pay as you go with prepaid credits. 1 credit = $0.10. API credits are separate from SignalX app plans.

Endpoint	Cost	Notes
`/v1/chat`	1 credit per 10K tokens (min. 1)	Typical answer 1-3 credits. We hold up to 20 credits while it runs (or your balance, if lower) and return the rest.
`/v1/search`	0.2 credits	Flat. Returned if the search fails.
`/v1/companies/* · market endpoints`	0.1 credits	Flat per call. Returned on 4xx/5xx.
`/v1/balance · /v1/usage`	Free	Still counts toward rate limits.

Chat questions200 / mo

Searches300 / mo

Data calls2,000 / mo

Estimated monthly cost

$66.00

660 credits

Chat$40
Search$6
Data$20

Prepaid, no subscription. Failed requests are refunded. Minimum top-up $5.

Reference

Research

AI answers and passages, grounded in filings.

POST/v1/chat1 credit / 10K tokens

Ask the research agent

Runs the same agent as the SignalX app. It picks from 30 data tools (filings, XBRL financials, insider trades, 13F holdings, 8-K events, activist stakes and more) and writes a cited Markdown answer. Set stream: true for Server-Sent Events.

message bodyrequired: stringYour question, 1-4,000 characters. English or Korean.
language body: "en" | "ko" = enAnswer language.
stream body: boolean = falseStream events instead of one JSON response. See Streaming.
request_id body: stringOptional correlation ID, echoed in X-Request-ID and your usage log.
Idempotency-Key header: string8-128 chars. A retry with the same key is never charged twice.

Request

curl -X POST "https://api.signal-x.app/v1/chat" \
  -H "Authorization: Bearer $SIGNALX_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{"message":"What did Nvidia insiders do in the last 90 days?","language":"en"}'

Response · 200

{
  "answer": "**Nvidia insiders were net sellers over the last 90 days.** EVP and General Counsel Timothy Teter sold 25,961 shares on Sep 21 at about $222-223 ...",
  "citations": [
    {
      "company_name": "NVIDIA CORP",
      "form_type": "4",
      "filing_date": "2026-09-23",
      "accession_number": "0001696841-26-000014",
      "cik": "1045810"
    }
  ],
  "tool_calls": [
    {
      "tool": "get_insider_trades",
      "input": {
        "ticker": "NVDA",
        "limit": 50
      }
    }
  ],
  "usage": {
    "credits_used": 2,
    "credits_reserved": 20,
    "credits_remaining": 480.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

POST/v1/search0.2 credits

Semantic search across filings

Vector search over AI summaries and filing sections, then an AI relevance check reorders the candidates by whether they actually answer your query (relevance, 0-1). Includes a short bullet summary of the matches. Faster and cheaper than chat when you want passages, not an essay.

query bodyrequired: stringWhat to look for, 1-1,000 characters.
ticker body: stringLimit to one company (or pass cik).
form_type body: string10-K, 10-Q, 8-K, 20-F ...
section_name body: stringrisk_factors, mda, business, legal_proceedings ...
date_from / date_to body: YYYY-MM-DDFiling date range.
limit body: integer = 10Results, 1-20.
language body: "en" | "ko" = enSummary language.

Request

curl -X POST "https://api.signal-x.app/v1/search" \
  -H "Authorization: Bearer $SIGNALX_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{"query":"supply chain risk from Taiwan","form_type":"10-K","limit":5}'

Response · 200

{
  "summary": "- Extreme Networks: tariffs and trade restrictions on Taiwan, Vietnam and Philippines manufacturing could raise costs and delay supply.\n- Monolithic Power Systems: tension around Taiwan and Hong Kong could disrupt silicon supply ...",
  "results": [
    {
      "company_name": "EXTREME NETWORKS INC",
      "cik": "1078271",
      "form_type": "10-K",
      "filing_date": "2025-08-18",
      "accession_number": "0000950170-25-109742",
      "section_name": "risk_factors",
      "similarity": 0.6359,
      "relevance": 0.92,
      "source_type": "summary",
      "excerpt": "US tariffs and retaliatory trade restrictions risk, including on Taiwan, Vietnam, Philippines manufacturing, potentially increasing costs ..."
    }
  ],
  "usage": {
    "credits_used": 0.2,
    "credits_remaining": 482.1
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

/v1/chat · stream: true

Streaming events

Server-Sent Events, one JSON object per data: line. Show tokens as they arrive and stop at complete or error. If you disconnect after the answer starts, you are billed for what ran; before that, nothing.

type	When	Fields
`status`	The agent is planning or between tool rounds.	message
`tool_call`	A data tool starts.	tool, input
`token`	A chunk of the answer.	text
`stream_end`	The answer text is finished; billing follows.	-
`heartbeat`	Sent each second while idle. Ignore it.	-
`complete`	Final event: full answer, citations, billing.	answer, citations, tool_calls, usage, request_id
`error`	Final event on failure. Credits are returned.	code (timeout · cancelled · llm_unavailable), message

Read the stream

curl -N -X POST "https://api.signal-x.app/v1/chat" \
  -H "Authorization: Bearer $SIGNALX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"message": "Summarize Apple risk factors", "stream": true}'

Reference

Companies

Everything about one issuer, by ticker or CIK.

GET/v1/companies/{ticker}0.1 credits

Company overview

Profile, recent filings of every form type, key XBRL financials and the last 90 days of insider trades in one call.

ticker pathrequired: stringTicker (NVDA, BRK.B) or numeric CIK.

Request

curl "https://api.signal-x.app/v1/companies/NVDA" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "company",
  "data": {
    "company": {
      "cik": "1045810",
      "company_name": "NVIDIA Corp",
      "ticker": "NVDA",
      "exact": true,
      "tags": [
        "Nasdaq 100",
        "S&P 500"
      ]
    },
    "recent_filings": [
      {
        "form_type": "4",
        "filing_date": "2026-09-23",
        "accession_number": "0001696841-26-000014"
      },
      {
        "form_type": "4",
        "filing_date": "2026-09-22",
        "accession_number": "0001199039-26-000016"
      }
    ],
    "financials": {
      "10-Q": {
        "net_income": [
          {
            "fiscal_year": "2027-Q2",
            "end_date": "2026-07-26",
            "display": "$59.7B"
          }
        ],
        "operating_income": [
          {
            "fiscal_year": "2027-Q2",
            "end_date": "2026-07-26",
            "display": "$63.7B"
          }
        ],
        "eps": [
          {
            "fiscal_year": "2027-Q2",
            "end_date": "2026-07-26",
            "display": "$2.46"
          }
        ],
        "revenue": [
          {
            "fiscal_year": "2027-Q2",
            "end_date": "2026-07-26",
            "display": "$96.2B"
          }
        ]
      },
      "10-K": {
        "net_income": [
          {
            "fiscal_year": "2026",
            "end_date": "2026-01-25",
            "display": "$120.1B"
          }
        ],
        "revenue": [
          {
            "fiscal_year": "2026",
            "end_date": "2026-01-25",
            "display": "$215.9B"
          }
        ],
        "operating_income": [
          {
            "fiscal_year": "2026",
            "end_date": "2026-01-25",
            "display": "$130.4B"
          }
        ],
        "eps": [
          {
            "fiscal_year": "2026",
            "end_date": "2026-01-25",
            "display": "$4.90"
          }
        ]
      }
    },
    "insider_trades_90d": [
      {
        "owner_name": "Teter Timothy S.",
        "officer_title": "EVP, General Counsel and Sec",
        "transaction_date": "2026-09-21",
        "transaction_code": "S",
        "shares_amount": 12483,
        "price_per_share": 222.1932,
        "is_director": false,
        "is_officer": true,
        "is_ten_percent_owner": false
      },
      {
        "owner_name": "Teter Timothy S.",
        "officer_title": "EVP, General Counsel and Sec",
        "transaction_date": "2026-09-21",
        "transaction_code": "S",
        "shares_amount": 13478,
        "price_per_share": 223.0489,
        "is_director": false,
        "is_officer": true,
        "is_ten_percent_owner": false
      }
    ]
  },
  "citations": [
    {
      "cik": "1045810",
      "company_name": "NVIDIA Corp",
      "form_type": "4",
      "filing_date": "2026-09-23",
      "accession_number": "0001696841-26-000014"
    }
  ],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

GET/v1/companies/{ticker}/financials0.1 credits

XBRL financials

Reported XBRL values by period: revenue, net income, EPS, margins, cash flow and balance sheet items. Quarterly periods come first.

ticker pathrequired: stringTicker (NVDA, BRK.B) or numeric CIK.
filing_type query: "all" | "10-K" | "10-Q" | "20-F" = allAnnual, quarterly or both.
metrics query: stringComma-separated, e.g. revenue,net_income,eps. Omit for all.
limit query: integer = 5Rows to return, 1-12.

Request

curl "https://api.signal-x.app/v1/companies/NVDA/financials?filing_type=10-Q&metrics=revenue%2Cnet_income&limit=2" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "financials",
  "data": {
    "resolved_company": {
      "cik": "1045810",
      "company_name": "NVIDIA Corp",
      "ticker": "NVDA",
      "exact": true
    },
    "10-Q": {
      "revenue": [
        {
          "fiscal_year": "2027-Q2",
          "end_date": "2026-07-26",
          "display": "$96.2B"
        },
        {
          "fiscal_year": "2027-Q1",
          "end_date": "2026-04-26",
          "display": "$81.6B"
        }
      ],
      "net_income": [
        {
          "fiscal_year": "2027-Q2",
          "end_date": "2026-07-26",
          "display": "$59.7B"
        },
        {
          "fiscal_year": "2027-Q1",
          "end_date": "2026-04-26",
          "display": "$58.3B"
        }
      ]
    }
  },
  "citations": [
    {
      "company_name": "NVIDIA Corp",
      "filing_date": "2026-08-26",
      "accession_number": "0001045810-26-000075",
      "form_type": "10-Q",
      "primary_doc_url": "https://www.sec.gov/Archives/edgar/data/1045810/000104581026000075/nvda-20260726.htm",
      "id": "e38d29e2-66d2-486d-b109-f8c6bce55aee",
      "cik": "1045810",
      "_period": "2026-07-26"
    }
  ],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

GET/v1/companies/{ticker}/filings0.1 credits

Filing list

Filings newest first. 8-K rows include their item titles, such as Item 2.02 (results of operations).

ticker pathrequired: stringTicker (NVDA, BRK.B) or numeric CIK.
form_type query: string10-K, 10-Q, 8-K, 4, 13F-HR, SC 13D ...
date_from / date_to query: YYYY-MM-DDFiling date range.
limit query: integer = 20Rows to return, 1-50.

Request

curl "https://api.signal-x.app/v1/companies/NVDA/filings?form_type=8-K&limit=2" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "filing_list",
  "data": {
    "filings": [
      {
        "id": "a4bb013e-7d42-4661-9b7b-a5cc46c34a54",
        "cik": "1045810",
        "company_name": "NVIDIA CORP  (NVDA)",
        "form_type": "8-K",
        "filing_date": "2026-09-03",
        "period_of_report": null,
        "accession_number": "0001045810-26-000078",
        "primary_doc_url": null,
        "event_items": "8.01: Other Events"
      },
      {
        "id": "b01705e1-a4ab-426a-b9b5-6fc68b946a85",
        "cik": "1045810",
        "company_name": "NVIDIA CORP  (NVDA)",
        "form_type": "8-K",
        "filing_date": "2026-08-26",
        "period_of_report": null,
        "accession_number": "0001045810-26-000073",
        "primary_doc_url": null,
        "event_items": "2.02: Results of Operations and Financial Condition"
      }
    ],
    "resolved_company": {
      "cik": "1045810",
      "company_name": "NVIDIA Corp",
      "ticker": "NVDA",
      "exact": true
    }
  },
  "citations": [
    {
      "company_name": "NVIDIA CORP  (NVDA)",
      "filing_date": "2026-09-03",
      "accession_number": "0001045810-26-000078",
      "form_type": "8-K",
      "primary_doc_url": "None",
      "id": "a4bb013e-7d42-4661-9b7b-a5cc46c34a54",
      "cik": "1045810"
    }
  ],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

GET/v1/companies/{ticker}/insider-trades0.1 credits

Insider trades (Form 4)

Non-derivative Form 4 transactions, newest first: who, title, transaction code (P buy, S sale, A grant, F tax withholding), shares and price.

ticker pathrequired: stringTicker (NVDA, BRK.B) or numeric CIK.
limit query: integer = 20Rows to return, 1-100.

Request

curl "https://api.signal-x.app/v1/companies/NVDA/insider-trades?limit=2" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "insider_trade_list",
  "data": {
    "resolved_company": {
      "cik": "1045810",
      "company_name": "NVIDIA Corp",
      "ticker": "NVDA",
      "exact": true
    },
    "trades": [
      {
        "owner_name": "Teter Timothy S.",
        "officer_title": "EVP, General Counsel and Sec",
        "transaction_date": "2026-09-21",
        "transaction_code": "S",
        "shares_amount": 12483,
        "price_per_share": 222.1932,
        "issuer_ticker": "NVDA",
        "issuer_name": "NVIDIA CORP",
        "is_director": false,
        "is_officer": true,
        "is_ten_percent_owner": false,
        "filing_id": "34aa96d7-b4ec-4a8b-8a02-d04b86f2110f"
      },
      {
        "owner_name": "Teter Timothy S.",
        "officer_title": "EVP, General Counsel and Sec",
        "transaction_date": "2026-09-21",
        "transaction_code": "S",
        "shares_amount": 13478,
        "price_per_share": 223.0489,
        "issuer_ticker": "NVDA",
        "issuer_name": "NVIDIA CORP",
        "is_director": false,
        "is_officer": true,
        "is_ten_percent_owner": false,
        "filing_id": "34aa96d7-b4ec-4a8b-8a02-d04b86f2110f"
      }
    ]
  },
  "citations": [
    {
      "company_name": "NVIDIA CORP",
      "filing_date": "2026-09-23",
      "accession_number": "0001696841-26-000014",
      "form_type": "4",
      "primary_doc_url": "None",
      "id": "34aa96d7-b4ec-4a8b-8a02-d04b86f2110f",
      "cik": "1045810"
    }
  ],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

GET/v1/companies/{ticker}/timeline0.1 credits

Event timeline

8-K events, insider open-market trades and 13D/G stake filings for one company, in date order with counts.

ticker pathrequired: stringTicker (NVDA, BRK.B) or numeric CIK.
days query: integer = 365Look-back window in days, 1-730.

Request

curl "https://api.signal-x.app/v1/companies/NVDA/timeline?days=90" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "timeline",
  "data": {
    "resolved_company": {
      "cik": "1045810",
      "company_name": "NVIDIA Corp",
      "ticker": "NVDA",
      "exact": true
    },
    "days": 90,
    "counts": {
      "Insider trade": 8,
      "8-K": 3
    },
    "events": [
      {
        "date": "2026-09-21",
        "type": "Insider trade",
        "kind": "sell",
        "who": "Teter Timothy S.",
        "value": "$6.8M",
        "count": 3,
        "accession_number": "0001696841-26-000014"
      },
      {
        "date": "2026-09-18",
        "type": "Insider trade",
        "kind": "sell",
        "who": "STEVENS MARK A",
        "value": "$300.1M",
        "count": 2,
        "accession_number": "0001199039-26-000016"
      }
    ]
  },
  "citations": [
    {
      "company_name": "NVIDIA CORP  (NVDA)",
      "filing_date": "2026-08-17",
      "accession_number": "0001045810-26-000069",
      "form_type": "8-K",
      "primary_doc_url": "None",
      "id": "61af262e-77d2-4378-ba56-6cd174b6cec3",
      "cik": "1045810"
    }
  ],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

GET/v1/companies/{ticker}/prices0.1 credits

Daily closing prices

Latest stored close, change over the window, period high and low, and recent closes. Always reports the as-of date.

ticker pathrequired: stringTicker symbol (CIKs are not accepted here).
days query: integer = 30Look-back window in days, 1-365.

Request

curl "https://api.signal-x.app/v1/companies/NVDA/prices?days=30" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "price_summary",
  "data": {
    "ticker": "NVDA",
    "as_of": "2026-10-02",
    "close": 235.87,
    "period_days": 30,
    "start_date": "2026-09-02",
    "start_close": 224.16,
    "change_pct": 5.22,
    "period_high": 235.87,
    "period_low": 210.96,
    "recent_closes": [
      {
        "date": "2026-10-02",
        "close": 235.87
      },
      {
        "date": "2026-10-01",
        "close": 230.86
      }
    ]
  },
  "citations": [],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

Reference

Market signals

Cross-market feeds the SignalX dashboards are built on.

GET/v1/events0.1 credits

8-K event feed

Recent 8-K current reports across the market with item codes, sector, an AI headline when one exists, and an AI-scored importance (0 routine to 4 major, relative to company size) with a specific event_type such as CEO change or M&A agreement. Sort by importance to get the week's biggest news.

days query: integer = 14Look-back window in days, 1-90.
items query: stringComma-separated item codes, e.g. 5.02 (leadership) or 1.01,2.01 (deals).
tracked_only query: boolean = falseOnly the ~2,400 watchlist companies.
sort query: "date" | "importance" = dateimportance = most important first.
min_importance query: numberOnly filings scored at least this, 0-4. 3 = significant and up.
limit query: integer = 25Rows to return, 1-50.
language query: "en" | "ko" = enLanguage of AI headlines.

Request

curl "https://api.signal-x.app/v1/events?days=3&tracked_only=true&limit=2" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "event_list",
  "data": {
    "days": 3,
    "items": "all",
    "filings": [
      {
        "filing_id": "0a832351-f804-4f68-83a1-2672da314a6c",
        "cik": "1114483",
        "company_name": "Integer Holdings Corp  (ITGR)",
        "ticker": "ITGR",
        "sector": "Health Care",
        "form_type": "8-K",
        "filing_date": "2026-10-02",
        "accession_number": "0001171843-26-006370",
        "items": [
          "8.01 Other event"
        ],
        "importance": 1.1,
        "event_type": "debt financing",
        "excerpt": "(d) Exhibits Exhibit Number Description of Exhibit 99.1 Press Release dated October 2, 2026 99.2 Form of Notice of Convertibility to Hold..."
      },
      {
        "filing_id": "0c038378-dfa0-4059-b307-9a52d67620ed",
        "cik": "37996",
        "company_name": "FORD MOTOR CO  (F, F-PB, F-PC, F-PD)",
        "ticker": "F",
        "sector": "Consumer Discretionary",
        "form_type": "8-K",
        "filing_date": "2026-10-02",
        "accession_number": "0000037996-26-000184",
        "items": [
          "7.01 Reg FD disclosure"
        ],
        "importance": 1.4,
        "event_type": "business update with numbers",
        "tone": "positive",
        "excerpt": "**** Submitted electronically with this Report in accordance with the provisions of Regulation S-T."
      }
    ],
    "sort_by": "date",
    "importance_scale": "0 routine/administrative, 1 minor, 2 notable, 3 significant, 4 major (relative to company size)"
  },
  "citations": [
    {
      "company_name": "Integer Holdings Corp  (ITGR)",
      "filing_date": "2026-10-02",
      "accession_number": "0001171843-26-006370",
      "form_type": "8-K",
      "cik": "1114483"
    }
  ],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

GET/v1/insiders/clusters0.1 credits

Insider cluster buys

Companies where several different insiders bought on the open market inside the window. Historically one of the stronger insider signals.

days query: integer = 90Look-back window in days, 7-365.
min_insiders query: integer = 3Minimum distinct buyers, 2-10.
min_value query: number = 250000Minimum total purchase value (USD).
limit query: integer = 20Rows to return, 1-50.

Request

curl "https://api.signal-x.app/v1/insiders/clusters?days=90&min_insiders=3&limit=2" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "insider_cluster_list",
  "data": {
    "days": 90,
    "definition": "3+ different insiders bought on the open market, $250,000+ in total",
    "clusters": [
      {
        "company": "GameStop Corp.",
        "ticker": "GME",
        "sector": null,
        "issuer_cik": "1326380",
        "insiders": 5,
        "trades": 10,
        "total_value": "$76.4M",
        "first_date": "2026-09-08",
        "last_date": "2026-10-02",
        "trading_days": 7,
        "ceo_bought": true,
        "cfo_bought": false,
        "top_buyers": [
          {
            "name": "Cohen Ryan",
            "title": "President, CEO and Chairman",
            "value": "$74.4M",
            "last_date": "2026-10-02"
          }
        ]
      },
      {
        "company": "Scribe Therapeutics, Inc.",
        "ticker": "SCTX",
        "sector": null,
        "issuer_cik": "1853921",
        "insiders": 5,
        "trades": 8,
        "total_value": "$66.3M",
        "first_date": "2026-07-23",
        "last_date": "2026-07-28",
        "trading_days": 4,
        "ceo_bought": false,
        "cfo_bought": true,
        "top_buyers": [
          {
            "name": "Aghazadeh Behzad",
            "title": "Director / 10% owner",
            "value": "$36.3M",
            "last_date": "2026-07-28"
          }
        ]
      }
    ]
  },
  "citations": [],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

GET/v1/insiders/top-buyers0.1 credits

Largest insider buyers

Biggest individual open-market buyers (Form 4 code P) across all companies, with total value, shares and average price.

days query: integer = 30Look-back window in days, 1-365.
role query: "insider" | "ceo_cfo" | "all" = insiderinsider = officers and directors.
limit query: integer = 15Rows to return, 1-50.

Request

curl "https://api.signal-x.app/v1/insiders/top-buyers?days=30&limit=2" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "insider_buyer_list",
  "data": {
    "days": 30,
    "role": "insider",
    "buyers": [
      {
        "owner_name": "BAKER BROS. ADVISORS LP",
        "title": "Director",
        "company": "Kodiak Sciences Inc.",
        "ticker": "KOD",
        "total_value": 156986393.74,
        "display": "$157.0M",
        "total_shares": 1941755,
        "avg_price": 80.85,
        "transactions": 82,
        "trading_days": 2,
        "first_date": "2026-09-28",
        "latest_date": "2026-09-29",
        "issuer_cik": "1468748"
      },
      {
        "owner_name": "AULT MILTON C III",
        "title": "Director",
        "company": "UNIVERSAL SAFETY PRODUCTS, INC.",
        "ticker": "UUU",
        "total_value": 92502401.5,
        "display": "$92.5M",
        "total_shares": 35634,
        "avg_price": 2595.9,
        "transactions": 12,
        "trading_days": 9,
        "first_date": "2026-09-03",
        "latest_date": "2026-09-30",
        "issuer_cik": "102109"
      }
    ]
  },
  "citations": [],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

GET/v1/smart-money0.1 credits

Smart Money 13F moves

What 17 curated conviction and activist managers (Berkshire, Baupost, Pershing Square, Elliott ...) bought and sold in their latest 13F filings.

scope query: "smart" | "conviction" | "activist" = smartsmart = both groups.
sort_by query: "buying" | "holders" | "net_flow" | "selling" = buyingRanking.
names query: stringComma-separated stocks to look up, e.g. AMZN,NVDA.
limit query: integer = 15Rows to return, 1-50.

Request

curl "https://api.signal-x.app/v1/smart-money?sort_by=buying&limit=2" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "smart_money",
  "data": {
    "scope": "smart",
    "funds": [
      "Berkshire Hathaway",
      "Baupost Group"
    ],
    "funds_with_latest_13f": 16,
    "quarter_end": "2026-06-30",
    "sort_by": "buying",
    "note": "13F positions are as of quarter end and are filed up to 45 days later. Net flow is estimated from the change in shares at reported prices...",
    "stocks": [
      {
        "name": "ALPHABET INC",
        "ticker": "GOOGL",
        "sector": "Communication Services",
        "funds_holding": 8,
        "funds_holding_prev": 8,
        "opened": 1,
        "added": 5,
        "trimmed": 2,
        "exited": 1,
        "value_held": "$42.0B",
        "est_net_flow": "$15.2B",
        "buyers": [
          {
            "fund": "Berkshire Hathaway",
            "change": "add",
            "est_flow": "$17.2B",
            "weight_pct": 12.62
          }
        ],
        "sellers": [
          {
            "fund": "Tiger Global",
            "change": "trim",
            "est_flow": "-$1.7B"
          }
        ]
      },
      {
        "name": "Space Exploration Technologies Corp",
        "ticker": null,
        "sector": null,
        "funds_holding": 5,
        "funds_holding_prev": 0,
        "opened": 5,
        "added": 0,
        "trimmed": 0,
        "exited": 0,
        "value_held": "$1.1B",
        "est_net_flow": "$1.1B",
        "buyers": [
          {
            "fund": "ARK Invest",
            "change": "new",
            "est_flow": "$765.1M",
            "weight_pct": 4.97
          }
        ],
        "sellers": []
      }
    ]
  },
  "citations": [],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

GET/v1/activists0.1 credits

Activist campaigns (13D)

SC 13D activist and 5%+ stake filings by target company, with stake change versus the filer's previous filing and stated intent.

days query: integer = 180Look-back window in days, 7-365.
ticker query: stringTarget company.
filer query: stringFiler name, e.g. ELLIOTT.
limit query: integer = 20Rows to return, 1-50.
language query: "en" | "ko" = enLanguage of AI intent summaries.

Request

curl "https://api.signal-x.app/v1/activists?days=180&limit=2" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "activist_campaign_list",
  "data": {
    "days": 180,
    "campaigns": [
      {
        "filing_id": "a3c37ad1-7911-45cf-ba7e-f43bfe8824ae",
        "accession_number": "0000921895-26-002666",
        "target": "BrightSpire Capital, Inc.",
        "ticker": "BRSP",
        "sector": "Real Estate",
        "filer": "CWRE SSF Securities Holding, LP",
        "filing_date": "2026-09-29",
        "stake_pct": 8.7,
        "prev_pct": null,
        "prev_filing_date": null,
        "first_13g_date": "2026-04-07",
        "intent": "operational",
        "summary": "Seeks a waiver of the ownership limit to increase its investment after submitting requests to the Board and independent directors.",
        "insider_buys_at_target": 0,
        "insider_buy_value": null
      },
      {
        "filing_id": "a47893a1-4d79-4c7d-9ce1-b53c26c0bc38",
        "accession_number": "0000904853-26-000006",
        "target": "REDWOOD TRUST INC",
        "ticker": "RWT",
        "sector": "Real Estate",
        "filer": "Amster Howard",
        "filing_date": "2026-09-25",
        "stake_pct": 9,
        "prev_pct": null,
        "prev_filing_date": null,
        "first_13g_date": null,
        "intent": "investment",
        "summary": "Holds the stake for investment and may add shares; no specific plans disclosed.",
        "insider_buys_at_target": 7,
        "insider_buy_value": "$1.4M"
      }
    ]
  },
  "citations": [
    {
      "company_name": "BrightSpire Capital, Inc.",
      "filing_date": "2026-09-29",
      "accession_number": "0000921895-26-002666",
      "form_type": "SC 13D",
      "primary_doc_url": "https://www.sec.gov/Archives/edgar/data/1717547/000092189526002666/xslSCHEDULE_13D_X02/primary_doc.xml",
      "id": "a3c37ad1-7911-45cf-ba7e-f43bfe8824ae",
      "cik": "1717547"
    }
  ],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

GET/v1/sectors0.1 credits

Sector activity

Per sector: insider buying versus selling, 8-K red flags and activist stakes over the window. Pass sector to drill into one.

days query: integer = 90Look-back window in days, 7-365.
sector query: stringGICS sector name, e.g. Health Care.
limit query: integer = 10Rows to return, 1-25.

Request

curl "https://api.signal-x.app/v1/sectors?days=90&limit=2" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "sector_overview",
  "data": {
    "days": 90,
    "note": "Insider figures count officers and directors, open-market trades only. Red flags = 8-K items 1.03, 1.05, 2.05, 2.06, 3.01, 4.01, 4.02. Se...",
    "sectors": [
      {
        "sector": "Agriculture",
        "companies": 9,
        "insider_buy_value": "$970.8K",
        "insider_sell_value": "$3.3M",
        "insider_buy_share_pct": 22.8,
        "insider_purchases": 4,
        "insider_sales": 13,
        "cluster_buys": 0,
        "eight_k_filings": 31,
        "eight_k_leadership_changes": 1,
        "eight_k_deals": 4,
        "eight_k_red_flags": 2,
        "new_13d_stakes": 0,
        "median_revenue_growth_pct": -2,
        "growth_sample": 9,
        "top_net_insider_buyer": {
          "company": "BrightView Holdings, Inc.",
          "ticker": "BV",
          "net": "$562.4K"
        }
      },
      {
        "sector": "Real Estate",
        "companies": 161,
        "insider_buy_value": "$36.9M",
        "insider_sell_value": "$199.6M",
        "insider_buy_share_pct": 15.6,
        "insider_purchases": 131,
        "insider_sales": 150,
        "cluster_buys": 4,
        "eight_k_filings": 470,
        "eight_k_leadership_changes": 46,
        "eight_k_deals": 87,
        "eight_k_red_flags": 5,
        "new_13d_stakes": 8,
        "median_revenue_growth_pct": 4.8,
        "growth_sample": 154,
        "top_net_insider_buyer": {
          "company": "American Assets Trust, Inc.",
          "ticker": "AAT",
          "net": "$20.1M"
        }
      }
    ]
  },
  "citations": [],
  "usage": {
    "credits_used": 0.1,
    "credits_remaining": 482.3
  },
  "request_id": "req_5f1c9a2e7b40d3a1c8e6f902"
}

Reference

Account

Balance and usage. Free to call.

GET/v1/balanceFree

Credit balance

Your remaining credits. Works with a zero balance, so you can check before topping up.

No parameters.

Request

curl "https://api.signal-x.app/v1/balance" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "balance_credits": 482.3,
  "balance_usd": 48.23,
  "total_used_credits": 117.7,
  "total_charged_usd": 60
}

GET/v1/usageFree

Request log

Your billed requests, newest first, with cursor pagination. Pass next_cursor back as starting_after until has_more is false.

days query: integer = 30Look-back window in days, 1-365.
limit query: integer = 50Rows to return, 1-100.
starting_after query: stringCursor from the previous page's next_cursor.

Request

curl "https://api.signal-x.app/v1/usage?days=30&limit=2" \
  -H "Authorization: Bearer $SIGNALX_API_KEY"

Response · 200

{
  "object": "list",
  "data": [
    {
      "request_id": "retry-7c1f-0001",
      "endpoint": "/v1/chat",
      "credits_used": 2,
      "duration_ms": 18342,
      "created_at": "2026-10-03T14:02:11.402+00:00"
    },
    {
      "request_id": "req_5f1c9a2e7b40d3a1c8e6f902",
      "endpoint": "/v1/companies/{ticker}",
      "credits_used": 0.1,
      "duration_ms": 412,
      "created_at": "2026-10-03T13:58:40.118+00:00"
    }
  ],
  "has_more": true,
  "next_cursor": "2026-10-03T13:58:40.118+00:00",
  "total_count": 41
}

2026-10-03 · v4.1
- 12 structured data endpoints: companies, financials, filings, insider trades, timeline, prices, 8-K events, insider clusters, top buyers, Smart Money, activists, sectors.
- 8-K events carry an AI-scored importance (0-4) and event type; sort or filter by importance.
- /v1/search reorders candidates with an AI relevance check and returns `relevance` next to `similarity`.
- Every response carries X-Request-ID; errors share one envelope with type, code and request_id.
- Idempotency-Key on POST requests. Retries are never charged twice.
- Rate limits by plan with an exact Retry-After and X-RateLimit-Reset.
- /v1/usage: cursor pagination and real totals. /v1/balance works with a zero balance.
- Chat no longer needs 20 credits up front: small balances reserve what they have.
- /v1/search returns 404 for unknown companies and 400 for bad dates (was 503).
2026-07-03 · v4.0
- Credits reserved before the answer runs and settled afterwards; failed and abandoned requests are refunded.

Build on SEC data in an afternoon

Machine-readable spec for code generators and AI agents, plus interactive docs you can call from the browser.

Get an API key OpenAPI spec Swagger UI

SEC filings, as an API

Quickstart

Authentication

Requests & headers

Errors

Rate limits

Pricing

Research

Ask the research agent

Semantic search across filings

Streaming events

Companies

Company overview

XBRL financials

Filing list

Insider trades (Form 4)

Event timeline

Daily closing prices

Market signals

8-K event feed

Insider cluster buys

Largest insider buyers

Smart Money 13F moves

Activist campaigns (13D)

Sector activity

Account

Credit balance

Request log

Changelog

Build on SEC data in an afternoon