Bond yields
Daily price and yield to maturity of US corporate bonds (the BOND venue), as the source evaluates them, one row per bond and day traded: a bond has no row on a day it did not trade. History is held from 2021. A row is knowable from when OHLC first read its current figures; a revised figure replaces the one before it, which is not kept. Supply symbols or instrument_ids: omitting both returns 422. Bonds are included with Commercial and Scale; keys on other plans get 403 market-not-entitled. Default order: date descending (newest first), id ascending. Supply symbols or instrument_ids; results are limited to the entitled scope. Data is delivered from validated canonical batches; a connected dataset with nothing published for the key's markets yet returns 503. Access requires the operation capability on the API key.
/v1/bonds/yields- Required capability
- bonds.read
- Data timing
- As published by the source
- Credits
- 5 credits per symbol.
Parameters
instrument_idsstringoptional · query- Filter by stable instrument IDs. IDs and symbols may not be combined.
symbolsstringoptional · query- Convenience lookup for exchange-listed instruments as MIC:TICKER or a bare ticker, which resolves to the exchange listing that ticker; resolves at symbol_at. The MIC and the ticker are case-insensitive, and two spellings of one listing (AAPL and XNAS:AAPL) count as a repeated value. A bare ticker that names no listing as written is also read in the common vendor spellings: with an exchange suffix (RY.TO, SHEL.L, VOD.LSE, BHP.AX), ^GSPC for INDEX:GSPC, and EURUSD=X or EURUSD for FOREX:EUR-USD. A ticker may contain a space (BAC PRL) but not start or end with one. A request in which no symbol resolves returns 404 symbol-not-resolved; otherwise each symbol that does not resolve, or resolves to a listing with no rows for the request (no-data), is an entry of meta.errors. IDs and symbols may not be combined.
symbol_atstringoptional · query- Resolve symbols as they were assigned at the end of this UTC date (YYYY-MM-DD); defaults to as_of. Only listings the security master holds resolve: it was built in September 2026 and records delistings from then on, so most issuers delisted earlier, such as TWTR or SIVB, resolve at no date. Only valid with symbols.
fromstringoptional · query- Inclusive lower bound on date.
tostringoptional · query- Inclusive upper bound on date; must be on or after from, so from equal to to selects one day.
as_ofstringoptional · query- Knowledge cutoff as a UTC date (YYYY-MM-DD): the response reflects what was known by the end of that day. Defaults to now; cannot be in the future. A yield is known from when OHLC first held its current figures, so a date before that returns no rows for the bond rather than 422.
known_fromstringoptional · query- First UTC date (YYYY-MM-DD, inclusive) on which a revision became known.
known_tostringoptional · query- Last UTC date (YYYY-MM-DD, inclusive) on which a revision became known; on or after known_from.
orderstringoptional · query- Direction on date; ties use ID ascending.
Default:ascdescdesc limitintegeroptional · query- Maximum records per page.Default:
100 cursorstringoptional · query- Opaque cursor, expires after one hour; binds filters, order, resolved as_of, account/key and entitlement. Repeat the original query unchanged.
formatstringoptional · query- Response format. csv returns the data rows with a header row, for spreadsheet functions such as IMPORTDATA; nested fields become dotted columns and lists one JSON array cell, the next page cursor is returned in X-Next-Cursor and meta.errors in X-Meta-Errors. A result without rows is the header row alone, listing the documented fields of a row. Default json, or csv when format is omitted and the Accept header ranks text/csv above JSON; a format the Accept header does not admit returns 406 not-acceptable.
jsoncsv
Response fields
Returns data as an array of records. All example values are illustrative.
idstring- Record identifier, stable across revisions.
instrument_idstring- Opaque stable public identifier; never an internal database key.
symbolstring- Listing symbol, BOND: and the ISIN.
datestring- Day the price was evaluated: a US business day the bond traded.
currency_codestring- ISO 4217 currency. Crypto quote assets use instrument IDs, not invented ISO codes.
pricestring- Clean price per 100 of face value; the close of that date in /v1/eod.
yield_to_maturitystring · null- Yield to maturity at price, as the source calculates it; null where it gives none. In percent: 4.375 means 4.375%.
Response metadata
Responses include meta.timezone. Dataset responses include next_cursor; health and exports have their own metadata. Request tracing uses the X-Request-ID header.
When something goes wrong
An empty data: [] is a successful query with no matching records. Invalid symbols, permissions and malformed parameters produce an RFC 9457 problem with an actionable detail.
Plans
Requires bonds.read. Access, recency and history depth come from the plan definitions the API enforces.
| Plan | Access | Recency | History |
|---|---|---|---|
| Free | Not included | — | — |
| Developer | Not included | — | — |
| Pro | Not included | — | — |
| Commercial | Included | As published | Full history |
| Scale | Included | As published | Full history |
History is how far back a plan may request. How far records actually go for a symbol is history_from in dataset coverage. Nothing is real-time. Compare plans