zsign
Server Details
E-signature API for AI agents: send contracts, sign PDF documents, track and download signed files.
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- Status
- Unhealthy
- Uptime
- 57.8% over 62 days
- OAuth
- Works in Glama
- Last Tested
- Transport
- Streamable HTTP
- URL
TDQS
Scored across 22 tools
Most tools have clear, distinct purposes (download_certificate vs download_signed_document, get_audit_trail, correct_recipient_email, etc.). There is mild overlap in the send family — send_envelope can also create a Draft, which touches send_draft and send_from_template — and the billing cluster (get_pricing, check_balance, buy_credits, get_usage) is dense, but the descriptions draw the boundaries explicitly.
All 22 tools use snake_case with a consistent verb_noun pattern (add_document_to_draft, create_template, list_envelopes, send_draft, void_envelope, get_envelope_status, etc.). No mixed conventions or vague single-word names; the longest names are still predictable verb_object forms.
22 tools is slightly above the ideal 3-15 band, but the e-signature domain legitimately spans account setup, billing/credits, drafts, templates, envelopes, recipients, and downloads, and each tool appears to earn its place. It is heavier than necessary but not bloated or redundant.
Core envelope lifecycle is well covered: create/draft, add documents, place fields, send, status, remind, correct recipient email, void, download signed PDF, certificate, and audit trail, plus template creation/listing/sending and billing. Minor gaps exist around delete/archive operations (no delete_template, delete_envelope, or draft removal) and richer template/recipient management.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
1 tool update
- Added
get_usage
1 tool update
- Added
correct_recipient_email
4 tool updates
- Added
create_template - Added
get_signing_links - Added
list_templates - Added
send_from_template
3 tool updates
- Added
add_document_to_draft - Changed
download_signed_document2 fields changed- added
Input schema / properties / document_idAdded value: +{ + "anyOf": [ + { + "type": "string" + }, + { + "type": "null" + } + ], + "default": null, + "title": "Document Id" +} - added
Input schema / properties / formatAdded value: +{ + "anyOf": [ + { + "type": "string" + }, + { + "type": "null" + } + ], + "default": null, + "title": "Format" +}
- Changed
send_envelope1 field changed- added
Input schema / properties / documentsAdded value: +{ + "anyOf": [ + { + "items": { + "additionalProperties": true, + "type": "object" + }, + "type": "array" + }, + { + "type": "null" + } + ], + "default": null, + "title": "Documents" +}
2 tool updates
- Added
download_certificate - Added
get_audit_trail
1 tool update
- Added
remind_envelope
1 tool update
- Added
list_envelopes
2 tool updates
- Changed
send_draft1 field changed- added
Input schema / properties / sequentialAdded value: +{ + "default": true, + "title": "Sequential", + "type": "boolean" +}
- Changed
send_envelope1 field changed- added
Input schema / properties / sequentialAdded value: +{ + "default": true, + "title": "Sequential", + "type": "boolean" +}
3 tool updates
- Added
send_draft - Changed
send_envelope8 fields changed- added
Input schema / properties / auto_sendAdded value: +{ + "default": true, + "title": "Auto Send", + "type": "boolean" +} - added
Input schema / properties / draftAdded value: +{ + "default": false, + "title": "Draft", + "type": "boolean" +} - added
Input schema / properties / fieldsAdded value: +{ + "anyOf": [ + { + "items": { + "additionalProperties": true, + "type": "object" + }, + "type": "array" + }, + { + "type": "null" + } + ], + "default": null, + "title": "Fields" +} - added
Input schema / properties / recipients / anyOfAdded value: +[ + { + "items": { + "additionalProperties": true, + "type": "object" + }, + "type": "array" + }, + { + "type": "null" + } +] - added
Input schema / properties / recipients / defaultAdded value: +null - removed
Input schema / properties / recipients / itemsRemoved value: -{ - "additionalProperties": true, - "type": "object" -} - removed
Input schema / properties / recipients / typeRemoved value: -"array" - removed
Input schema / requiredRemoved value: -[ - "recipients" -]
- Added
update_draft
3 tool updates
- Added
get_referral_link - Changed
send_envelope3 fields changed- added
Input schema / properties / metadataAdded value: +{ + "anyOf": [ + { + "additionalProperties": true, + "type": "object" + }, + { + "type": "null" + } + ], + "default": null, + "title": "Metadata" +} - added
Input schema / properties / send_completion_emailAdded value: +{ + "default": true, + "title": "Send Completion Email", + "type": "boolean" +} - added
Input schema / properties / send_inviteAdded value: +{ + "default": true, + "title": "Send Invite", + "type": "boolean" +}
- Added
void_envelope
7 tool updates
- First observed
buy_credits - First observed
check_balance - First observed
create_account - First observed
download_signed_document - First observed
get_envelope_status - First observed
get_pricing - First observed
send_envelope
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Related MCP Servers
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- AlicenseNot gradedqualityCmaintenanceE-signature for AI agents. One unauthenticated call returns a sandbox API key (no account, no browser), then the agent can send documents for signature, check status, and download the sealed PDF plus Certificate of Completion.1 npmMIT
- AlicenseNot gradedqualityCmaintenanceEnables AI agents to send PDFs for legally binding e-signature, place signature fields, track signer status, and retrieve court-ready evidence packages. Every signing event is recorded in a public hash chain that anyone can verify without trusting the sender or the service.MIT
- AlicenseAqualityCmaintenanceDocument signing for AI agents. Send markdown or PDF for two-party e-signing with a single tool call — handles PDF generation, email verification, and SHA-256 certified delivery.212 npmMIT
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