SignatureAPI on ChatGPT and Claude
Listings side by side
| Field | SignatureAPIChatGPT · Apps SDK | SignatureAPIClaude · Plugin |
|---|---|---|
| Kind | Apps SDK | Plugin |
| Best rank | #422 Business & Operations | — |
| Charts | 1 | — |
| Countries | 48/48 | Worldwide |
| Tools or skills | — | — |
| MCP server | mcp.signatureapi.com | — |
| Developer | Superposition Labs, Inc. | — |
| Website | signatureapi.com | — |
| Starter prompts | — | — |
| Created or launched | Created Jun 5, 2026 | Launched Sep 4, 2026 |
| Listing changes | — | — |
Gaps
ChatGPT · Apps SDK
- No skill names
Claude · Plugin
- No rank
- No website
- No tool names
Tool coverage
No tool names visible