Signal Feed API - Alpha Documentation

The Signal Feed API is available on the Institutional tier only. Contact sales@alpha.ac for access.

Get Company Signals

GET /v1/signals/{ticker}

Returns governance signals for a specific company, ordered by recency.

number

default:"50"

Maximum signals to return (max 200)

string

ISO 8601 datetime. Only return signals after this timestamp.

string

Filter by signal tier: T1, T2, T3, T4, T5

number

Filter by dimension number (1-12)

Response

{
  "ticker": "META",
  "company_name": "Meta Platforms Inc.",
  "signals": [
    {
      "id": "sig_abc123",
      "signal_type": "regulatory_action",
      "title": "EU Digital Services Act compliance order",
      "summary": "European Commission issued formal compliance demand...",
      "signal_tier": "T2",
      "dimension": 8,
      "dimension_name": "Regulatory & Compliance Posture",
      "geh_contribution": 0.03,
      "disclosure_timing_flag": false,
      "source_url": "https://ec.europa.eu/...",
      "detected_at": "2026-04-03T14:22:00Z",
      "confidence_level": "high"
    }
  ],
  "total": 142,
  "methodology_url": "https://alpha.ac/institute/methodology"
}

Signal Tiers

Tier	Description	Weight
T1	Primary evidence: audits, assessments, first-party documentation	3x
T2	Secondary evidence: regulatory filings, enforcement actions	3x
T3	Third-party evidence: analyst reports, media investigations	3x
T4	Derived evidence: peer comparison, industry benchmarks	3x
T5	Public data: press releases, website disclosures, news	1x

T1-T4 signals are weighted 3x relative to T5 signals in governance scoring. A rating based solely on T5 signals carries a confidence level of “low” and is flagged in all outputs.

Signal Feed (Delta Stream)

GET /v1/signals/feed

Returns new governance signals across all covered companies since a given checkpoint. Designed for continuous monitoring integrations.

string

required

ISO 8601 datetime. Returns signals detected after this timestamp.

number

default:"100"

Maximum signals per page (max 500)

string

Pagination cursor from previous response

Response

{
  "signals": [
    {
      "id": "sig_def456",
      "ticker": "NVDA",
      "company_name": "NVIDIA Corporation",
      "signal_type": "board_change",
      "title": "New AI Ethics Board member appointed",
      "signal_tier": "T3",
      "dimension": 1,
      "detected_at": "2026-04-03T16:00:00Z"
    }
  ],
  "next_cursor": "eyJ...",
  "has_more": true,
  "checkpoint": "2026-04-03T16:00:00Z"
}

Use the checkpoint value as since in your next poll to avoid gaps.

Signal Types

Type	Description
`regulatory_action`	Enforcement, fines, compliance orders
`board_change`	Director appointments, departures, committee changes
`policy_disclosure`	AI principles, governance framework publications
`incident`	AI system failures, bias events, safety issues
`litigation`	Lawsuits, class actions, regulatory investigations
`earnings_governance`	AI governance mentions in earnings calls
`patent_activity`	AI safety/governance related patent filings
`lobbying`	AI policy lobbying disclosures
`proxy_vote`	Shareholder proposals on AI governance
`certification`	Third-party audits, certifications, standards compliance

​Get Company Signals

​Response

​Signal Tiers

​Signal Feed (Delta Stream)

​Response

​Signal Types

Get Company Signals

Response

Signal Tiers

Signal Feed (Delta Stream)

Response

Signal Types