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/api/v1/indices/{id}GET
Get detailed information about a specific index
Authorization
bearerAuth *Bearer <token>
Clerk session JWT, or an API key (the ak_ prefix), sent as a Bearer token or an ?api_key= query parameter. Each endpoint requires the read scope for its resource (e.g. org:rates:read for rates). Token in: header
Response
200 · Index details
index_id *string
Stable identifier for the index (for example red). Use it as the {id} path parameter on the index detail, constituents, and price endpoints.
name *string
Full display name of the index.
ticker *string
Short uppercase symbol for the index (for example RED). This endpoint accepts either this ticker (case-insensitively) or index_id as its path parameter.
description *stringnull
Free-text description of what the index tracks.
methodology?stringnull
Registered methodology key used to compute the index. Omitted only when no methodology is stored.
constituents_count *integer
Number of constituents in the index: member markets for a market-basket index, or child sub-indices for a composite. A derived index that inherits its book from a base index reports 0 and names that base in base_index_id.
is_composite *boolean
True for a composite index (its constituents are other indices and its price blends child sub-index values); false for a market-basket index (its constituents are exchange markets). Always present, so a client can branch on index kind even when the index has no constituents yet.
office_category *stringnull
The index's declared office category (lowercase, e.g. "senate"), the input to methodology weighting and composite child-weight derivation. Null for composites and uncategorized indices; always present.
base_index_id?stringnull
For a derived total_return index, the composite index it compounds the returns of; null for the curated families, which have no base. The detail page shows this in place of the constituent count a derived index lacks.
latest_price?numbernull
Most recent index level, on the base-100 index scale (100 is neutral). See level_interpretation for how this index's methodology frames the level, since a probability family and a total-return family read the same number differently.
level_interpretation?object[]
Methodology-resolved rows explaining what latest_price means, formatted server-side (the curated families frame it as a composite probability, total_return as a compounding return). The client renders them verbatim; omitted when the level or the methodology is unavailable.
Show item properties
label *string
value *string
price_change_1d?numbernull
Absolute change in index points (not a percent) from the previous daily close to latest_price. The baseline is the last completed daily close before the current day in US Eastern time, so this is a change against a settled value rather than a rolling 24-hour window.
price_change_7d?numbernull
Absolute change in index points (not a percent) from the daily close seven days before the current day in US Eastern time to latest_price. Null when the index has no daily close that far back.
previous_close_1d?numbernull
The index level at the previous daily close, meaning the last completed daily close before the current day in US Eastern time, not a rolling 24-hour window. Returned by GET /api/v1/public/indices/{id}; omitted on GET /api/v1/indices/{id}.
previous_close_7d?numbernull
The index level at the daily close seven days before the current day in US Eastern time, the baseline price_change_7d is measured against. Returned by GET /api/v1/public/indices/{id}; omitted on GET /api/v1/indices/{id}.
stats?object | null
Trailing returns and risk statistics computed from the index's daily close series over roughly the trailing 400 days. Returned by both index detail endpoints; the values are null individually when the series is too short for that window.
composition?object | null
Breakdown of the index over its flattened constituents: per-state exposure and a maturity profile of when those constituents expire.
halted?boolean
True when the latest index value was carried forward because the index fell below its constituent floor.
halt_valid_constituents?integernull
When halted, the valid (priced, guardrail-passing) constituents at the most recent halt cycle. Omitted when not halted.
halt_min_constituents?integernull
When halted, the category constituent floor the index fell below. Omitted when not halted.
halt_reason?stringnull
When halted, a render-ready human-readable explanation of the halt, composed from the counts above. Omitted when not halted.
403 · The organization has no paid plan, so the realtime read scopes are refused. Distinct from a 429, which means a plan's budget ran out: nothing here resets on a timer, and the request succeeds only once the organization holds a plan.
error *string
Human-readable reason the request was refused.
status *integer
HTTP status code, repeated in the body.
upgrade_url?string (uri)
Page listing the plans and their request allowances, for buying access. Absent when no plan is available for purchase.
404 · Index not found
error?string
Stable, machine-readable code identifying the failure; branch on this rather than on message. One of bad_request, unauthorized, forbidden, not_found, conflict, service_unavailable, upstream_error, service_error, or internal_error.
message?string
Human-readable explanation, safe to show to a user. For client errors it names the specific problem; for server-side failures it is a generic notice and the underlying detail is deliberately withheld.
429 · The paid organization's minute or UTC-day request budget is exhausted.
error *"rate_limited"
Always rate_limited. Branch on this to detect a throttled request.
limit *"rpm" | "daily"
Which limit was hit: rpm for the per-minute cap or daily for the daily one.
message *string
Human-readable explanation naming the limit that was exceeded.
upgrade_url?string (uri)
Page listing the plans and their request allowances, for buying a larger budget. Absent when no plan is available for purchase.
Request example
curl -X GET "https://api.adjacent.markets/api/v1/indices/<id>" \
  -H "Authorization: Bearer <token>"
Response example
{
  "index_id": "red",
  "name": "Republican Political Future Index",
  "ticker": "RED",
  "description": "Composite of Republican party-line contests across all levels of office in the United States",
  "constituents_count": 5,
  "latest_price": 91.3069,
  "price_change_1d": 0.2663,
  "price_change_7d": -0.3112,
  "halted": false
}
Adjacent News API
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