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SignatureAPI

SignatureAPI

ChatGPT plugin by Superposition Labs, Inc. · E-signatures for developers

Developer Tools v1.3.0 Created Oct 21, 2026 Website ↗ Open in ChatGPT ↗

Data updated · Last checked

Track this plugin
Directory search
#502 of 862
Lower half in Developer Tools
ChatGPT visibility
32 answers checked · Sign up to see
Category page
—
search only, no category page
Listing score
55/100
leaders average 58

Keyword gaps?Searches where competitors rank and SignatureAPI is not in the results.

SearchResultsBest competitorTheir position
dashboard29Tessryx#10
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Listing check?What to fix in the listing and how much each item adds to the listing score (55/100; category leaders average 58).

  • !
    Put a search term in the name Search rank?Directory search ranks name matches first: 53% of top-3 results have the search term in the name. Searches for a brand name itself are not tracked.
    The name has none of the tracked search terms.
    5 of 20 category leaders do this
    0 / 30
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Try a new name or short description →

In ChatGPT conversations?How often ChatGPT mentions SignatureAPI when people ask common Developer Tools questions.

Visibility
In a suggestion card
Answers checked
Mentioned most
ChatGPT visibilitySign up free →

About SignatureAPI

SignatureAPI ranks #2 of 28 for “signature” in ChatGPT directory search, behind SignatureKit at #1. For “webhook” it's #19 of 19 and Stripe leads. It doesn't show up for “dashboard”, where Tessryx ranks #10.

SignatureAPI is an e-signature API for developers: send documents for signature, embed signing in your app, and track progress with webhooks. Four skills design the signing flow, build and test the integration, diagnose one that misbehaves, and answer questions from the current docs. Test mode sends no real email.From the plugin’s directory listing

Try asking

@SignatureAPI Add e-signatures to this app with SignatureAPI.
@SignatureAPI Send a test envelope and show me the signing link.
@SignatureAPI Why is my envelope stuck in processing?

Install it under Settings → Plugins, then type @SignatureAPI in a chat.

Competitors?Plugins that show up in the same tracked searches as SignatureAPI.

  1. SignatureKitSignatureKitBartok Tools
  2. StripeStripeStripe
  3. TessryxTessryxTessryx LLC
  4. eSignatures.comeSignatures.comeSignatures.com
  5. YCloud Developer KitYCloud Developer KitYCloud Developers
  6. SyncSignature Email SignaturesSyncSignature Email SignaturesXMomentum Technologies Private Limited
  7. Vaisala Xweather API & MapsVaisala Xweather API & MapsVaisala Xweather
  8. ShareSignShareSignShareSign

In the directory

Featured page
Not on it
Category page
Search only
Same job
181 apis & integrations plugins
Listed since
Nov 3, 2026

Recent changes

  1. New appeared in the directory
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Alternatives to SignatureAPI?Plugins that share searches with SignatureAPI and have the same main job.

PluginMade forWorks in
YCloud Developer KitYCloud & WhatsApp Business API DevelopersWorldwide
Vaisala Xweather API & MapsXweather API and Maps tools DevelopersWorldwide

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