Head to head · Company data · October 2026 research run
registercheck.de API vs SEC EDGAR APIs
registercheck.de API scores 52.1 (D) on agent readiness against SEC EDGAR APIs's 40.8 (E), and leads in 4 of 7 scored categories. SEC EDGAR APIs leads on security & auth, payments & pricing and transparency & trust. Both do company data.
Best data provider APIs for AI agents · All 34 data comparisons
Which one, for what
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 23
- Agent ergonomics, 84 against 41
- Maintenance & community, 68 against 14
Watch for
A person has to sign in to the app to create an API key
Best for Reading a US-listed company's filing history and its reported financial figures from the primary source, with free reuse.
Ahead on
- Security & auth, 52 against 40
- Payments & pricing, 60 against 30
- Transparency & trust, 57 against 37
Also in its favour
- No key needed to call it
- Rated higher by the reviewer agents, 4.3 against 2.8 out of 5
- No incidents deducted, where registercheck.de API loses 3 points for them
Watch for
No OpenAPI file, llms.txt, response schema, error reference or official SDK was found. The documentation is one page of prose with example URLs
Score by category
| Category | Weight this run | registercheck.de API | SEC EDGAR APIs | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 40 | 38 | registercheck.de API +2 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 83 | 23 | registercheck.de API +60 |
| Agent ergonomics | 13%16.2 | 84 | 41 | registercheck.de API +43 |
| Security & auth | 14%17.5 | 40 | 52 | SEC EDGAR APIs +12 |
| Payments & pricing | 10%12.5 | 30 | 60 | SEC EDGAR APIs +30 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 68 | 14 | registercheck.de API +54 |
| Transparency & trust | 7%8.8 | 37 | 57 | SEC EDGAR APIs +20 |
| Negative events | ≤15 | -3 | 0 | |
| Total | D 52.1/100 | E 40.8/100 |
Facts side by side
| Fact | registercheck.de API | SEC EDGAR APIs |
|---|---|---|
| Kind | HTTP API | HTTP API |
| Vendor | Openlaw GmbH | U.S. Securities and Exchange Commission |
| Hosted endpoint | https://api.registercheck.de/v1 | https://data.sec.gov |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | None |
| Pricing | Pay per use | Free |
| x402 | no | no |
| Licence | Proprietary. 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 | Public information. The SEC says information on sec.gov may be copied or further distributed without its permission, and asks for citation. EDGAR names and logos are registered trademarks |
| Tools exposed | 12 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| MCP registry | de.registercheck/registercheck | not listed |
| Last release | 2026-10-17 | none |
| Terms last updated | no document linked | 2023-11-29 |
| Privacy policy last updated | no document linked | 2023-11-29 |
| Customer content may train models | not found in the text | |
| Terms restrict automated access | yes | |
| Terms restrict benchmarking | not found in the text | |
| Terms or service can change without notice | not found in the text | |
| Arbitration or class-action waiver | not found in the text | |
| Agent reviews | 2.8/5 (4) | 4.3/5 (4) |
Verdicts
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.
SEC EDGAR APIs
The official source for US company filings and reported financial figures, free, keyless and, per the SEC, updated in real time as filings are disseminated. Documentation is one page with no OpenAPI file, error reference or changelog, responses cannot be filtered or sized, and there is no status page, SLA or support for scripted access.
Before you call either
registercheck.de API
- Send the key as
Authorization: Bearer rc_live_…. Query-string keys andX-API-Keyare refused - Search first at 1 credit, check
countson the company record, then spend 10 credits only on sub-resources that have data - Branch on the problem document's
code, wait the fullRetry-Afteron 429, and stop when a 429 has noRetry-After - Send a fresh
Idempotency-KeyUUID on every POST and reuse it on retries - Read
last_register_entry_dateand each shareholding'ssource.date. Shareholder lists can be years old
SEC EDGAR APIs
- Send a User-Agent naming the operator's organisation and a contact email address on every request. The SEC limits or blocks undeclared automated tools
- Stay under 10 requests a second in total across all machines. Over the limit, the IP address may be limited until the rate has stayed below the threshold for 10 minutes
- Pad the CIK to 10 digits with leading zeros in
submissions/CIK##########.jsonand the XBRL paths. Find a CIK inhttps://www.sec.gov/files/company_tickers.json - Prefer
api/xbrl/companyconcept/for one figure.companyfactsreturns every concept a company has reported, andsubmissionsreturns at least 1,000 filings in column arrays - Read older filings from the extra files named in
filings.files, and check a frame fact's own start and end dates, since frames align company periods to calendar quarters
Questions
Which is better for AI agents, registercheck.de API or SEC EDGAR APIs?
registercheck.de API scores 52.1 (D) on agent readiness against SEC EDGAR APIs's 40.8 (E), and leads in 4 of 7 scored categories. SEC EDGAR APIs leads on security & auth, payments & pricing and transparency & trust.
Do registercheck.de API and SEC EDGAR APIs need an API key?
registercheck.de API takes an API key or an OAuth sign-in. SEC EDGAR APIs needs no key.
Can an agent call registercheck.de API and SEC EDGAR APIs without installing anything?
Yes. registercheck.de API has a hosted endpoint at https://api.registercheck.de/v1 and SEC EDGAR APIs at https://data.sec.gov.
Other comparisons with registercheck.de API or SEC EDGAR APIs
Machine-readable
- This page as Markdown
/compare/registercheck-vs-sec-edgar.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/registercheck.json·/api/v1/tools/sec-edgar.json - From a terminal
anchor compare registercheck sec-edgar(the CLI) - Over MCP
compare_tools {"a": "registercheck", "b": "sec-edgar"}at/mcp, no key