AuthorizationstringheaderRequired Bearer API key. Programmatic access to the World API needs a key; browsing nosible.world in a browser does not.
Example: Bearer nos_sk_...
Retrieve cursor-paged events that mention one canonical entity across any date window.
viewenumqueryThe record each event is returned as: lite (the default), the event without its evidence, or full, the complete record. Any other value is a 422 validation_error. About records on Event details lists both.
Example: lite
include_vectorbooleanquerytrue adds each event's embedding, oai_vector (3,072 values, comma-separated), to either view. Defaults to false.
Example: false
typestringrequiredqueryNER type, or ANY. ANY looks each entity type up under the name it indexes and returns the union of their events, as the entity_any filter does.
Example: ORG
namestringrequiredqueryCanonical display name returned by /resolve.
Example: Nvidia
limitintegerqueryPage size. Defaults to 50, maximum 500.
Example: 50
cursorstringqueryOpaque cursor returned by the previous response.
Example: eyJ2Ijox...
fromdatequeryInclusive lower date bound in YYYY-MM-DD format.
Example: 2026-01-01
todatequeryInclusive upper date bound in YYYY-MM-DD format.
Example: 2026-07-20
orderenumqueryEvent ordering, newest or oldest first.
Example: desc
include_livebooleanqueryDefaults to true. Include published slices after the archive index, including today and yesterday (UTC). Set false for archive-only retrieval. GET uses the query string; POST uses a JSON boolean.
Example: true
In V2.0, the timeline is driven by Atlas: it lists the events that mention the canonical entity under any of its folded names, and the entity is the one the Atlas API returns. Use this route to build a company or person timeline. Resolve the canonical name first, then page with the opaque cursor; do not infer a cursor from dates or offsets. Store the as_of markers with research results.
These are the fields you can build against. Nested names use dot notation; optional sections are called out in their descriptions.
schemastringResponse schema name.
viewstringThe view the events are returned in: lite (the default) or full. See About records on Event details.
include_vectorbooleantrue when the request asked for the embedding with include_vector=true; absent otherwise.
entityobjectThe entity: type, canonical Atlas name and normalized lookup form. Events mentioning it under any of its names are included.
entity.namestringCanonical Atlas name of the entity.
totalintegerEvents matching the request before paging.
countintegerEvents in this page.
orderstringEvent order: desc (newest first, the default) or asc.
date_windowobjectThe effective inclusive window searched: from, to, index_last_date (the last date with indexed events), archive_cutoff (the last archive date) and include_live. Entity and ticker timelines with include_live=true default to today (UTC) and accept a window wholly after the archive boundary, such as today alone. Their live_events are records in the same format, constrained by both bounds, marked ephemeral and returned on the first page only, outside archive total and cursor paging. Without include_live the default upper bound is the archived index.
date_window.fromdateFirst date searched.
date_window.todateLast date searched.
eventsobject[]The events, as lite records unless view=full (About records on Event details lists both). A full record adds provenance, availability, triples, each ticker's why and v2_preview_success.
events[].event_idstringStable event identifier.
events[].versionstringEvent record version: "2.0-preview".
events[].eventobjectThe event in its original language: date, language, title, description and points.
events[].event.datedateWorld archive date of the event.
events[].event.languagestringISO 639-1 code of the event's original language.
events[].event.titlestringHeadline, in the original language.
events[].event.descriptionstringShort narrative, in the original language.
events[].event.pointsstring[]Key facts of the event, one sentence each.
events[].englishobjectThe event in English: title, description and points, translated when the original language is not English.
events[].coverageobjecttotal_coverage, total_netlocs, coverage_concentration_index, first_seen, last_seen and most_seen, as in Event details.
events[].locationsobject[]Places of the event, its own place first, then places named in it, as in Event details.
events[].signalsobjectSentiment, materiality, time horizon and forward-looking signals with their class probabilities, as in Event details.
events[].tickersobject[]Listed companies the event concerns, in the Event details format without why. Empty when has_tickers is false.
events[].has_tickersbooleanWhether tickers is non-empty.
events[].entitiesobjectNamed entities by NER type, {TYPE: [{name, mention_count, confidence}]}, as in Event details.
events[].sentimentsobjectEntity-level sentiment grouped by entity type. Each item has name, sentiment_label (positive, neutral or negative), and sentiment_score, the final Percentage Margin Z-score.
events[].ontologiesobject[]Classifications of the event, most probable first, as in Event details.
events[].oai_vectorstringOnly with include_vector=true: the event's 3,072-dimension embedding (text-embedding-3-large), comma-separated.
next_cursorstring | nullOpaque cursor for the next page; send it back unchanged. null when there are no more events.
hydration_missesintegerEvents that matched but could not be read; normally 0.
as_ofobjectindex_build and archive_cutoff: the index that answered. Store them with results to reproduce them.
took_msintegerServer time in milliseconds.
languagestring[]Languages the events were filtered to with the language parameter; empty when not filtered.
invalid_json — The request body is not JSON. Every error body, 401 included, is {error, message, status}.api_key_required — No API key was sent. Send it as Authorization: Bearer <key> or the api-key header.invalid_api_key — The API key is invalid or has been revoked.access_denied — The requested archive date is outside the caller's World tier.validation_error — The request is well formed but the API cannot decode or validate it: an unknown body field or query parameter, a missing required parameter, a value of the wrong type, an empty and, or or not, a date that is not a calendar date (in the path, the query or the body), an unknown enum value or a reversed range. The message names the parameter and what is wrong.not_found — The requested date, entity, ticker, or event does not exist in the accessible index.cursor_expired — The cursor belongs to a replaced index build; restart from the first page.rate_limited — The request exceeded the endpoint or account rate limit. Respect Retry-After when supplied.backend_not_configured — The World backend is not configured for this deployment.api_key_auth_unavailable — API key authentication is temporarily unavailable; retry shortly.api_key_metering_unavailable — API key usage metering is temporarily unavailable, so the request was not served; wait for the Retry-After header (30 seconds) and retry.backend_error — The World backend could not be reached or did not return a valid response; retry shortly.backend_timeout — The World backend did not answer within 300 seconds; narrow the request (for example with a date window) or retry.unknown_entity — The requested entity is not present in the index.