10 actions in 9 pieces of software · ranked by words, meaning and measured trust · 635 ms

1. 1python-gnupgverified and signedpassport

   libraryvsajip/python-gnupgrecord13,373,380 downloads/month

   • signing

2. 2AWS Key Management Serviceverified and signedpassport

   APIaws/api-models-awsrecord229 stars

   • Sign

     <p>Creates a <a href="https://en.wikipedia.org/wiki/Digital_signature">digital signature</a> for a message or message digest by using the private key in an asymmetric signing KMS key. To verify the si

   • Verify

     <p>Verifies a digital signature that was generated by the <a>Sign</a> operation. </p> <p/> <p>Verification confirms that an authorized user signed the message with the specified KMS key and signing al

3. 3crynux-mcpfound in code, not yet checkedno passport yet

   MCP servercrynux-network/crynux-mcp

   • sign_message

     Sign an arbitrary message with a local keychain key. Private key is never returned.

4. 4KeyVaultClientverified and signedpassport
   • sign

     Creates a signature from a digest using the specified key.

5. 5Cloud Key Management Service (KMS) APIverified and signedpassport

   APIrecord

   • cloudkms.projects.locations.keyRings.cryptoKeys.cryptoKeyVersions.macSign

     Signs data using a CryptoKeyVersion with CryptoKey.purpose MAC, producing a tag that can be verified by another source with the same key.

6. 6Probely Developersverified and signedpassport

   APIrecord

   • POST /keys/

     Create account API key

7. 7agentprivacyfound in code, not yet checkedno passport yet
   • key_sign

     Sign a City Key evolution under the fixed policy: κ must re-derive (L5), the key must name this bearer (or no bearer), its prior must be the ledger head (no history rewrites), no unbaked steps, rate-limited. Returns the key (κ stamped) and the signed VTA record. Refusals say why.

8. 8myceliumailfound in code, not yet checkedno passport yet

   MCP servertreebird7/myceliumail

   • sign_message

     Sign a message with your Ed25519 signing key (for identity verification)

9. 9Sinao APIverified and signedpassport

   APIrecord

   • app.apikeys.create

     Create new API key