SignatureAPI
ChatGPT plugin by Superposition Labs, Inc. · Send documents to sign
About SignatureAPI
SignatureAPI is a ChatGPT plugin by Superposition Labs, Inc. in the Business & Operations category of the ChatGPT plugin directory. Its listing describes it as “Send documents to sign”. It was created on Jun 5, 2026 and has been tracked in the directory since Oct 2, 2026.
SignatureAPI does not currently reach the top 10 for common Business & Operations searches in the directory, so most people find it by searching for its name.
On the directory's Business & Operations page it is listed at position 384 of 631.
SignatureAPI helps users create e-signature envelopes, upload documents from ChatGPT, inspect envelope status, cancel in-progress envelopes, delete final envelopes, and search SignatureAPI documentation before building requests.From the plugin’s directory listing
Search positions
| Search | Position | Last 7 days |
|---|---|---|
| api | #18 |
Keyword gaps
| Search | Best competitor | Their position |
|---|---|---|
| molecule | Boltz | #2 |
Listing check
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0 / 30Put a search term in the name Search rankThe name has none of the tracked search terms.Directory search ranks name matches first: 74% of top-3 results have the search term in the name. Searches for a brand name itself are not tracked.13 of 20 category leaders do this
Plugins competing for the same searches
Recent changes
No changes yet.
SignatureAPI: questions and answers
What does SignatureAPI do?
Send documents to sign. SignatureAPI helps users create e-signature envelopes, upload documents from ChatGPT, inspect envelope status, cancel in-progress envelopes, delete final envelopes, and search SignatureAPI documentation before building requests.
Who makes SignatureAPI?
SignatureAPI is developed by Superposition Labs, Inc..
How do I add SignatureAPI to ChatGPT?
Open ChatGPT, go to Plugins, search for “SignatureAPI” and select Install plugin. You can also open its page in the directory directly.
Is SignatureAPI still available in ChatGPT?
Yes. SignatureAPI was listed in the ChatGPT plugin directory at the latest hourly check.