Claude-skill-registry-data lseg

Use when fetching financial data from LSEG Workspace via the Eikon Data API. Covers cURL requests, field discovery, symbology conversion, and time series data retrieval.

install

source · Clone the upstream repo

git clone https://github.com/majiayu000/claude-skill-registry-data

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/majiayu000/claude-skill-registry-data "$T" && mkdir -p ~/.claude/skills && cp -r "$T/data/lseg" ~/.claude/skills/majiayu000-claude-skill-registry-data-lseg && rm -rf "$T"

manifest: data/lseg/SKILL.md

source content

LSEG Workspace Data API

Access financial, vessel, and commodity data from LSEG Workspace via the Eikon Data API.

Prerequisites

LSEG Workspace must be running on your machine (exposes local proxy on port 9000)
App Key - generate via Workspace: type
```
APPKEY
```
in search bar, select "Eikon Data API" checkbox

Store credentials in

.env

LSEG_APP_ID=your_app_key_here
LSEG_API_ENDPOINT=http://localhost:9000/api/udf/

API basics

Endpoint:

http://localhost:9000/api/udf/

Required headers:

Content-Type: application/json
x-tr-applicationid: <app_key>
X-Forwarded-Host: localhost

Request format:

{
  "Entity": {
    "E": "<entity_type>",
    "W": { <parameters> }
  }
}

Entity types

DataGrid - fetch data for instruments

Basic query:

curl -s -X POST "$LSEG_API_ENDPOINT" \
  -H "Content-Type: application/json" \
  -H "x-tr-applicationid: $LSEG_APP_ID" \
  -H "X-Forwarded-Host: localhost" \
  -d '{
    "Entity": {
      "E": "DataGrid",
      "W": {
        "instruments": ["AAPL.O", "MSFT.O"],
        "fields": [
          {"name": "TR.CommonName"},
          {"name": "TR.PriceClose"},
          {"name": "TR.PE"}
        ]
      }
    }
  }' | jq .

With date parameters (time series):

curl -s -X POST "$LSEG_API_ENDPOINT" \
  -H "Content-Type: application/json" \
  -H "x-tr-applicationid: $LSEG_APP_ID" \
  -H "X-Forwarded-Host: localhost" \
  -d '{
    "Entity": {
      "E": "DataGrid",
      "W": {
        "instruments": ["AAPL.O"],
        "fields": [
          {"name": "TR.PriceClose"},
          {"name": "TR.Volume"}
        ],
        "parameters": {
          "SDate": "2025-01-01",
          "EDate": "2025-01-31",
          "TOP": 10000
        }
      }
    }
  }' | jq .

SymbologySearch - convert identifiers

Convert between RIC, ISIN, IMO, CUSIP, SEDOL, etc:

curl -s -X POST "$LSEG_API_ENDPOINT" \
  -H "Content-Type: application/json" \
  -H "x-tr-applicationid: $LSEG_APP_ID" \
  -H "X-Forwarded-Host: localhost" \
  -d '{
    "Entity": {
      "E": "SymbologySearch",
      "W": {
        "symbols": ["US0378331005"],
        "from": "ISIN",
        "to": ["RIC"],
        "bestMatch": true
      }
    }
  }' | jq .

Common identifier types:

RIC

ISIN

CUSIP

SEDOL

IMO

ticker

Response format

{
  "columnHeadersCount": 1,
  "data": [
    ["AAPL.O", "Apple Inc", 278.28, 37.47],
    ["MSFT.O", "Microsoft Corp", 478.53, 34.05]
  ],
  "headers": [[
    {"displayName": "Instrument"},
    {"displayName": "Company Common Name", "field": "TR.COMMONNAME"},
    {"displayName": "Price Close", "field": "TR.PRICECLOSE"},
    {"displayName": "P/E (Daily Time Series Ratio)", "field": "TR.PE"}
  ]],
  "totalRowsCount": 3
}

Common fields

Equities

Field	Description
`TR.CommonName`	Company name
`TR.PriceClose`	Closing price
`TR.PriceOpen`	Opening price
`TR.PriceHigh`	Day high
`TR.PriceLow`	Day low
`TR.Volume`	Trading volume
`TR.PE`	P/E ratio
`TR.CompanyMarketCap`	Market capitalization
`TR.TotalEmployees`	Employee count
`TR.HeadquartersCountry`	HQ country
`TR.GICSSector`	GICS sector

Vessels (maritime)

Field	Description
`TR.AssetIMO`	IMO number
`TR.AssetName`	Vessel name
`TR.AssetDWT`	Deadweight tonnage
`TR.AssetCubicCapacity`	Cubic capacity
`TR.AssetDateTime`	Position timestamp
`TR.AssetLocationLongitude`	Longitude
`TR.AssetLocationLatitude`	Latitude
`TR.AssetLocationDraught`	Current draught
`TR.AssetSpeed`	Speed
`TR.AssetHeading`	Heading
`TR.AssetDestination`	Destination port
`TR.AssetLocationStatus`	Navigation status

Trade flows (vessels)

Field	Description
`TR.AssetFlowPermID`	Flow ID
`TR.AssetLoadingPort`	Loading port
`TR.AssetLoadingDateTo`	Loading date
`TR.AssetDischargingPort`	Discharge port
`TR.AssetDischargeDate`	Discharge date
`TR.AssetFlowCommodity`	Commodity
`TR.AssetVolume`	Volume
`TR.AssetCharterer`	Charterer

Helper scripts

This skill includes helper scripts in

.claude/skills/lseg/scripts/

Script	Purpose
`lseg-query.sh`	General DataGrid queries
`lseg-symbology.sh`	Identifier conversion
`lseg-timeseries.sh`	Time series data

Usage:

# Load environment
source .env

# Query company data
.claude/skills/lseg/scripts/lseg-query.sh "AAPL.O,MSFT.O" "TR.CommonName,TR.PriceClose"

# Convert ISIN to RIC
.claude/skills/lseg/scripts/lseg-symbology.sh "US0378331005" ISIN RIC

# Get time series
.claude/skills/lseg/scripts/lseg-timeseries.sh "AAPL.O" "TR.PriceClose" "2025-01-01" "2025-01-31"

Rate limits

Limit	Value
Requests per second	5
Requests per day	10,000
Data per minute	50 MB
Data per day	5 GB
get_data points	~10,000
get_timeseries (interday)	3,000 rows
get_timeseries (intraday)	50,000 rows

Troubleshooting

Connection refused: LSEG Workspace not running. Start the desktop app.

401 Unauthorized: Invalid or expired app key. Generate new key via

APPKEY

in Workspace.

Empty response: Check field names are correct (case-sensitive

TR.FieldName

format).

Port 9000 in use: Workspace may use next available port. Check Workspace settings or try 9001.