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massive-com

6 indexed repositories · View on GitHub

client-python
The official Python client library for the Massive.com REST and WebSocket API.

Python · 1512 stars
mcp_massive
An MCP server for Massive.com Financial Market Data

Python · 391 stars
client-js
The official JS client library for the Massive.com REST and WebSocket API.

TypeScript · 273 stars
client-go
The official Go client library for the Massive REST and WebSocket API.

Go · 198 stars
community
Official examples and demos from Massive showcasing how to use our market data APIs across different platforms and languages.

105 stars
client-jvm
The official JVM client library SDK, written in Kotlin, for accessing the Massive.com REST and WebSocket API.

Kotlin · 82 stars

Beginner friendly Everything

Open All

Adding Net Order Imbalance(NOI) for Nasdaq Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

massive-com/mcp_massive#101 · Opened Sep 19, 2026
Expected an int but was 1749456000000 at path $.results[0].t Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

massive-com/client-jvm#315 · Opened Sep 6, 2026
Feature Request: Support for MCP_HOST and MCP_PORT Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

massive-com/mcp_massive#100 · Opened Sep 2, 2026
Feature Request: Support for MASSIVE_API_KEY_FILE Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

massive-com/mcp_massive#99 · Opened Sep 2, 2026
Not having this on Maven Central is such a bad developer UX Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

massive-com/client-jvm#314 · Opened Aug 17, 2026
Suggestion: API for Economic Calendars: PCE/CPI/NFP/unemployment...etc Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

massive-com/mcp_massive#98 · 1 comment · Opened Aug 16, 2026
Decoding JSON response errors should include the URL Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 72/100

massive-com/client-python#1031 · Opened Aug 15, 2026
Add multiplier on Technical Indicators endpoints Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 45/100

massive-com/client-python#1029 · Opened Aug 11, 2026
API/docs feedback: snapshot day/min zero-filled as unset (not documented) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

massive-com/client-js#303 · 1 comment · Opened Aug 10, 2026
Possible missing 1-minute aggregates: MMM and HON (Stocks Basic) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

massive-com/client-python#1028 · Opened Aug 7, 2026
Idea: opt-in monetization layer for MCP tool responses Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

massive-com/mcp_massive#97 · Opened Jul 26, 2026
call_api: retry transient failures (429/503/504) and surface Retry-After Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

massive-com/mcp_massive#95 · Opened Jun 16, 2026
Inconsistent typing for WebSocketMessage and WebSocketClient.run() callback in v2.8.0 Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

massive-com/client-python#1022 · Opened Jun 2, 2026
Massive Market Data MCP extension fails to install in Claude Desktop with checksum mismatch. Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

massive-com/mcp_massive#92 · 1 comment · Opened Jun 1, 2026
Free plan cannot run websocket example (ws-library-advanced.js) Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

massive-com/client-js#290 · Opened May 24, 2026
Historic market cap data is incorrect Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 50/100

massive-com/client-python#1016 · Opened May 9, 2026
Comparison filters on ListNews (PublishedUtc.gte/gt/lte/lt) are unconstructible from outside the gen package Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

massive-com/client-go#579 · Opened May 6, 2026
Ambiguity in 'call_api' abstraction leads to incorrect endpoint and parameter selection by models Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

massive-com/mcp_massive#88 · 1 comment · Opened Apr 26, 2026
urllib connection pool kwargs Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

massive-com/client-python#1009 · Opened Mar 19, 2026
get daily k line data is wrong Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

massive-com/client-python#1007 · Opened Mar 15, 2026
Daily ticker summary preMarket type mismatch Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

massive-com/client-go#571 · Opened Mar 9, 2026
MSFT dividend data has gaps Open

bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

massive-com/client-python#1004 · 1 comment · Opened Mar 4, 2026
Bug: Snapshot endpoint av field typed as integer in OpenAPI spec but API returns float Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

massive-com/client-go#569 · Opened Mar 2, 2026
SDK does not respect SSL_CERT_FILE or REQUESTS_CA_BUNDLE environment variables Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

massive-com/client-python#998 · Opened Feb 12, 2026
Expose initial / historical news sentiment insights for backtesting stability Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

massive-com/client-js#265 · Opened Feb 9, 2026
cjs compatibility Open

Difficulty 2/5 1-3 hours Newbie friendliness 58/100

massive-com/client-js#263 · 2 reactions · Opened Feb 4, 2026
+1 fired up the MCP server and saw no tool for options APIs and have no use for the integration. Now I'm going to see how hard it'd be to add it. But also...on principle I pay too much to not have it done for me. Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

massive-com/community#6 · 1 comment · Opened Jan 19, 2026
TypeScript Type Resolution Errors for `websocketClient` and `restClient` Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

massive-com/client-js#250 · Opened Nov 21, 2025
`PolygonRestClient.fetchResult` closes `HttpClient` too early, causing `JobCancellationException` Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

massive-com/client-jvm#300 · Opened Sep 21, 2025
Client get_ticket_types() errors out on "options" asset class Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

massive-com/client-python#907 · Opened Sep 1, 2025
list_tickers() sorting behavior doesn't match documentation Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

massive-com/client-python#899 · Opened Jul 17, 2025
[BUG] onAuthenticated not working because of wrong implementation of JsonElement.isStatusMessage() Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

massive-com/client-jvm#297 · 1 comment · Opened Jul 11, 2025
IAggsResults is not exposed. Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

massive-com/client-js#227 · 2 comments · Opened Jun 22, 2025
Agg timestamps should be consistent between WS/REST Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

massive-com/client-go#537 · 1 comment · Opened May 19, 2025
py.typed file / type stubs are missing Open

bug

Difficulty 1/5 Under an hour Newbie friendliness 72/100

massive-com/client-python#876 · 1 comment · Opened Apr 25, 2025
Configurable backoff strategy for websocket client Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

massive-com/client-go#528 · Opened Apr 9, 2025
Missing parameter with some API Open

massive-com/client-jvm#295 · 1 comment · 1 assignee · Opened Apr 7, 2025
data issue with symbol MA, the historical daily bar price did not reflect the split on correct date Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

massive-com/client-jvm#287 · Opened Feb 25, 2025
Client needs kotlin version update Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

massive-com/client-jvm#284 · Opened Feb 19, 2025
Subscribing to Quote data overwhelms single async io call in websocket. Here is some fixes that could work. Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

massive-com/client-python#849 · 2 comments · Opened Feb 11, 2025
Is this client being actively maintained? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

massive-com/client-jvm#267 · 1 comment · Opened Dec 26, 2024
Add RateLimiter to List iter functions. Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

massive-com/client-go#485 · 2 comments · Opened Dec 24, 2024
typing bug on get agg Open

bug

massive-com/client-python#728 · 2 comments · 1 assignee · Opened Aug 14, 2024
Technical Indicators incorrect Time Conversion Open

bug

massive-com/client-python#689 · 1 comment · 1 assignee · Opened Jun 22, 2024
Incorrect mapping for FinancialsBlocking request Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

massive-com/client-jvm#197 · Opened May 19, 2024
WebSocketListener receives RawMessage instead of Parsed Json Trade or quotes Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

massive-com/client-jvm#185 · Opened Apr 8, 2024
JCenter is deprecated - remove this requirement? Open

Difficulty 2/5 1-3 hours Newbie friendliness 30/100

massive-com/client-jvm#96 · Opened May 25, 2023
Options Chain and Options Contracts missing "strike_price" field. Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

massive-com/client-jvm#89 · Opened Apr 27, 2023

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