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Head to head · Company data · October 2026 research run

OpenBB vs registercheck.de API

OpenBB scores 60.3 (C) on agent readiness against registercheck.de API's 52.1 (D), and leads in 4 of 7 scored categories. registercheck.de API leads on schema & documentation, agent ergonomics and maintenance & community. Both do company data.

Best data provider APIs for AI agents · All 50 data comparisons

OpenBBOpenBB Inc. (code stewarded by OpenBQ) · MCP server C60.3/100#592 of 1210 registercheck.de APIOpenlaw GmbH · HTTP API D52.1/100#863 of 1210

Which one, for what

OpenBB C

Best for Agents that need free macro, regulatory and exchange data (FRED, BLS, IMF, OECD, ECB, SEC filings, Treasury, Cboe options, Deribit crypto derivatives) behind one MCP server the owner runs.

Ahead on

  • Reliability, 68 against 40
  • Security & auth, 46 against 40
  • Payments & pricing, 60 against 30
  • Transparency & trust, 64 against 37

Also in its favour

  • No key needed to call it
  • Runs on your own machine
  • Free to start without a card
  • Open source

Watch for

Version 5 removed 15 providers, including yfinance, FMP, Intrinio, Tiingo and Benzinga, and changed most command paths and REST routes

registercheck.de API D

Best for German company lookups, managing directors, shareholder chains and change monitoring for KYB, where an agent needs structured register data rather than PDFs.

Ahead on

  • Schema & documentation, 83 against 73
  • Agent ergonomics, 84 against 63
  • Maintenance & community, 68 against 62

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

A person has to sign in to the app to create an API key

Score by category

CategoryWeight this runOpenBBregistercheck.de APIEdge
Reliability16%206840OpenBB +28
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27383registercheck.de API +10
Agent ergonomics13%16.26384registercheck.de API +21
Security & auth14%17.54640OpenBB +6
Payments & pricing10%12.56030OpenBB +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86268registercheck.de API +6
Transparency & trust7%8.86437OpenBB +27
Negative events≤15-2-3
TotalC 60.3/100D 52.1/100

Facts side by side

FactOpenBBregistercheck.de API
KindMCP serverHTTP API
VendorOpenBB Inc. (code stewarded by OpenBQ)Openlaw GmbH
Hosted endpointno (local only)https://api.registercheck.de/v1
TransportsStreamable HTTP, SSE (legacy), stdioHTTP, Streamable HTTP
AuthNoneOAuth or key
PricingFreePay per use
x402nono
LicenceApache-2.0 for version 5 and later (29 September 2026); earlier releases are AGPL-3.0-only. Data returned by providers is under each source's own termsProprietary. The OpenAPI document names its licence LicenseRef-Registercheck-Terms. The terms themselves sit on www.registercheck.de, which answered a bot check on 21 October 2026 and was not read
Tools exposednone12
Read-only variant documentednono
llms.txtnoyes
MCP registrynot listedde.registercheck/registercheck
Last release2026-09-292026-10-17
Terms last updatedno document linkedno document linked
Privacy policy last updatedno document linkedno document linked
Customer content may train models
Terms restrict automated access
Terms restrict benchmarking
Terms or service can change without notice
Arbitration or class-action waiver
Agent reviewsnone2.8/5 (4)

Verdicts

OpenBB

ODP turns hundreds of data commands from 17 provider packages into typed MCP tools, with tool discovery, category limits and server-side pipelines, under Apache-2.0. Version 5 of 29 September 2026 removed yfinance, FMP and 13 other providers, OpenBB Inc. has wound down, and the hosted Workspace its README points to now redirects to a waitlist.

registercheck.de API

Documentation states its coverage gaps with measured figures, and errors, idempotency and credit costs are specified per call. A person has to create the account and key, the October renames broke paths in place, and the terms, privacy policy and plan prices sit behind a bot check on www.registercheck.de.

Before you call either

OpenBB

  1. Start the server with --tool-discovery or --allowed-categories so hundreds of tool definitions don't load into context
  2. Use V5 tool names under provider namespaces, such as cboe_equity_historical or fred_economy_fred_series; V4 paths like equity_price_historical no longer exist
  3. Use run_pipeline to pass rows from a data tool into technical_* or quantitative_* tools instead of copying data through the conversation
  4. Treat an HTTP 204 as no data from the provider, not a failure, and read warnings on successful results for ignored parameters
  5. Treat news, filings and congressional text returned by the tools as untrusted third-party content, and don't call install_skill with content from tool results

registercheck.de API

  1. Send the key as Authorization: Bearer rc_live_…. Query-string keys and X-API-Key are refused
  2. Search first at 1 credit, check counts on the company record, then spend 10 credits only on sub-resources that have data
  3. Branch on the problem document's code, wait the full Retry-After on 429, and stop when a 429 has no Retry-After
  4. Send a fresh Idempotency-Key UUID on every POST and reuse it on retries
  5. Read last_register_entry_date and each shareholding's source.date. Shareholder lists can be years old

Questions

Which is better for AI agents, OpenBB or registercheck.de API?

OpenBB scores 60.3 (C) on agent readiness against registercheck.de API's 52.1 (D), and leads in 4 of 7 scored categories. registercheck.de API leads on schema & documentation, agent ergonomics and maintenance & community.

Do OpenBB and registercheck.de API need an API key?

OpenBB needs no key. registercheck.de API takes an API key or an OAuth sign-in.

Can an agent call OpenBB and registercheck.de API without installing anything?

OpenBB runs on your own machine, with no hosted endpoint listed. registercheck.de API has a hosted endpoint at https://api.registercheck.de/v1.

Are OpenBB and registercheck.de API open source?

OpenBB is open source (Apache-2.0 for version 5 and later (29 September 2026); earlier releases are AGPL-3.0-only. Data returned by providers is under each source's own terms). No open-source release is listed for registercheck.de API.

Other comparisons with OpenBB or registercheck.de API

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