Applications › E-signature & Contract Management

E-signature & Contract Management

What 6 leading E-signature & Contract Management apps are built on: the providers each one ships in its code or lists as an integration, grouped by layer and capability, and joined to the catalog.

6 reference apps 66 providers 26 observed in code 40 declared only 98.5% in the catalog 52.9 mean Kin Score 32 with a verified MCP server

How to read this. observed the integration ships in the app (SDK in a dependency file, source code, or an Android build analysis). declared the app names the integration itself (README, integrations page, store listing). Every row links the source it was read from. Providers not yet in the catalog are marked queued for profiling. Blueprint by API Evangelist, CC BY-NC-SA 4.0. Capabilities marked Turbo EA come from Turbo EA Capabilities by Vincent Verdet, CC BY 4.0 (notice); those marked API Evangelist extension are CC BY-NC-SA 4.0. Android build analyses: Exodus Privacy (reports.exodus-privacy.eu.org).

domain layer 5 capabilities

Qualified Electronic Signatures & Trust Services 7 providers · AE-160.80 · API Evangelist extension

Qualified Electronic Signatures & Trust Services capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
eID Easy	observed [1] [2]	OpenSign, Zoho Sign	30.4 thin	9.4 agent-aware	—
Signicat	declared [1]	Zoho Sign	66.5 exemplar	42.5 agent-ready	—
InfoCert	declared [1]	Zoho Sign	54.2 developing	37.5 agent-ready	—
Singpass	declared [1]	Zoho Sign	25.1 emerging	2.5 human-only	—
eMudhra	declared [1]	Zoho Sign	16.9 emerging	0.0 human-only	—
Uanataca	declared [1]	Zoho Sign	12.9 emerging	11.9 agent-aware	—
Aadhaar eSign (UIDAI)	declared [1]	Zoho Sign	12.0 emerging	0.0 human-only	—

Contract Management 1 providers · BC-150.10 · Turbo EA

Contract Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Ironclad	declared [1]	Dropbox Sign	50.2 developing	35.3 agent-ready	none found

Cryptography and Key Management 1 providers · BC-620.50.50 · Turbo EA

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google Cloud HSM (KMS)	observed [1]	Documenso	53.2 developing	24.6 agent-aware	none found

Document Generation & Conversion 1 providers · AE-918 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Browserless	observed [1]	Documenso	55.0 strong	46.1 agent-ready	verified

Identity Verification 1 providers · AE-160.30 · API Evangelist extension

Identity Verification capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
CLEAR	declared [1]	DocuSign	46.5 developing	34.7 agent-ready	none found

common layer 26 capabilities

Cloud Drive & File Sync 6 providers · AE-916 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google Workspace	declared [1] [2] [3]	DocuSign, Dropbox Sign, Zoho Sign	61.9 strong	27.6 agent-aware	verified
Microsoft OneDrive	declared [1] [2] [3]	DocuSign, Dropbox Sign, Zoho Sign	37.1 thin	19.6 agent-aware	none found
Box	declared [1] [2]	DocuSign, Zoho Sign	65.0 strong	57.4 agent-ready	verified
Google Drive	declared [1] [2]	Dropbox Sign, Zoho Sign	53.4 developing	43.2 agent-ready	verified
Google APIs	observed [1]	OpenSign	70.1 exemplar	45.4 agent-ready	verified
Dropbox	declared [1]	Zoho Sign	47.5 developing	45.8 agent-ready	verified

Customer Relationship Management 6 providers · BC-420 · Turbo EA

Customer Relationship Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
HubSpot	declared [1] [2] [3]	DocuSign, Dropbox Sign, Zoho Sign	94.8 exemplar	52.7 agent-ready	verified
Salesforce	declared [1] [2]	DocuSign, Dropbox Sign	90.4 exemplar	54.7 agent-ready	verified
Pipedrive	declared [1]	Zoho Sign	54.6 strong	29.3 agent-ready	none found
Microsoft Dynamics 365	declared [1]	Dropbox Sign	49.4 developing	28.1 agent-aware	verified
Vtiger	declared [1]	Zoho Sign	35.9 thin	14.4 agent-aware	none found
QQ Catalyst (Vertafore)	declared [1]	Dropbox Sign	10.8 minimal	0.0 human-only	none found

Workflow Automation & iPaaS 4 providers · AE-910 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Zapier	declared [1] [2] [3]	Dropbox Sign, OpenSign, Zoho Sign	73.7 exemplar	66.2 agent-ready	verified
Microsoft Power Automate	declared [1] [2]	DocuSign, Zoho Sign	57.0 strong	34.2 agent-ready	none found
Integrately	declared [1]	Zoho Sign	45.7 developing	19.8 agent-aware	none found
Make	declared [1]	Zoho Sign	41.4 developing	43.9 agent-ready	verified

Storage Management 3 providers · BC-600.50.20 · Turbo EA

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Amazon S3	observed [1] [2] [3]	DocuSeal, Documenso, OpenSign	70.8 exemplar	23.3 agent-aware	verified
Azure Blob Storage	observed [1] [2]	DocuSeal, Documenso	55.5 strong	26.9 agent-aware	verified
Google Cloud Storage	observed [1]	DocuSeal	65.1 strong	33.3 agent-ready	verified

Electronic Documentation Management 4 providers · BC-2500.50 · Turbo EA

Electronic Documentation Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Microsoft Word	declared [1]	Dropbox Sign	63.2 strong	40.8 agent-ready	verified
Google Docs	declared [1]	Dropbox Sign	60.5 strong	35.1 agent-ready	verified
Microsoft 365	declared [1]	Zoho Sign	39.4 developing	23.9 agent-aware	verified
Formstack	declared [1]	Zoho Sign	22.7 emerging	33.9 agent-ready	none found

Product Usage Analytics 3 providers · BC-4280.30 · Turbo EA

Product Usage Analytics capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
PostHog	observed [1] [2]	Documenso, OpenSign	57.7 strong	57.3 agent-ready	verified
Mixpanel	observed [1]	DocuSign	60.3 strong	48.3 agent-ready	verified
Google Firebase Analytics	observed [1]	DocuSign	50.3 developing	14.2 agent-aware	verified

Transactional Email 4 providers · AE-150.10.10 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Amazon SES	observed [1]	Documenso	80.6 exemplar	39.4 agent-ready	none found
Resend	observed [1]	Documenso	58.9 strong	49.4 agent-ready	verified
MailChannels	observed [1]	Documenso	42.1 developing	21.2 agent-aware	—
Mailgun	observed [1]	OpenSign	30.9 thin	19.0 agent-aware	verified

Talent Acquisition Management 3 providers · BC-300.10 · Turbo EA

Talent Acquisition Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Recruitee	declared [1]	Dropbox Sign	52.2 developing	22.5 agent-aware	none found
Greenhouse	declared [1]	Dropbox Sign	34.7 thin	45.6 agent-ready	none found
PageUp queued for profiling	declared [1]	Dropbox Sign	—	—	—

Customer Service Management 2 providers · BC-430 · Turbo EA

Customer Service Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Plain	observed [1]	Documenso	61.2 strong	51.1 agent-ready	verified
ServiceNow	declared [1]	DocuSign	66.0 strong	43.2 agent-ready	none found

Internal Communications Management 2 providers · BC-850.10 · Turbo EA

Internal Communications Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Slack	declared [1]	Dropbox Sign	73.2 exemplar	38.7 agent-ready	verified
Microsoft Teams	declared [1]	Zoho Sign	56.2 strong	34.2 agent-ready	none found

Mailbox & Calendar Sync 2 providers · AE-150.80 · API Evangelist extension

Mailbox & Calendar Sync capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Outlook	declared [1]	Zoho Sign	65.9 strong	48.6 agent-ready	verified
Gmail	declared [1]	Zoho Sign	44.1 developing	19.6 agent-aware	verified

Project Management 2 providers · BC-900.30 · Turbo EA

Project Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Procore	declared [1]	Dropbox Sign	67.6 exemplar	41.3 agent-ready	none found
monday.com	declared [1]	DocuSign	31.9 thin	50.3 agent-ready	verified

Social & Federated Login 2 providers · AE-160.10.30 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Microsoft sign-in	observed [1]	Documenso	60.0 strong	26.4 agent-aware	none found
Google sign-in	observed [1]	Documenso	36.8 thin	19.6 agent-aware	none found

Bot Protection & CAPTCHA 1 providers · AE-160.70 · API Evangelist extension

Bot Protection & CAPTCHA capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Cloudflare Turnstile	observed [1]	Documenso	27.3 thin	23.1 agent-aware	verified

Configuration & Secrets Management 1 providers · BC-4210.60 · Turbo EA

Configuration & Secrets Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
AWS Secrets Manager	observed [1]	DocuSeal	69.4 exemplar	31.9 agent-ready	none found

Customer Feedback Management 1 providers · BC-430.50 · Turbo EA

Customer Feedback Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Wootric	observed [1]	DocuSign	34.2 thin	20.7 agent-aware	none found

Digital Marketing Management 1 providers · BC-400.60 · Turbo EA

Digital Marketing Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
ActiveCampaign	declared [1]	Dropbox Sign	78.2 exemplar	53.7 agent-ready	documented

Hosted LLM Inference 1 providers · AE-110.10.10 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google Vertex AI	observed [1]	Documenso	48.4 developing	24.6 agent-aware	verified

Human Capital Management 1 providers · BC-300 · Turbo EA

Human Capital Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Workday	declared [1]	DocuSign	55.9 strong	34.4 agent-ready	none found

IT Job Scheduling and Batch Operations 1 providers · BC-600.40.20 · Turbo EA

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Inngest	observed [1]	Documenso	65.6 strong	37.9 agent-ready	verified

Knowledge Management 1 providers · BC-830 · Turbo EA

Knowledge Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Coda	declared [1]	Dropbox Sign	47.1 developing	25.7 agent-aware	none found

Mobile Attribution & Deep Linking 1 providers · AE-902 · API Evangelist extension

Mobile Attribution & Deep Linking capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
AppsFlyer	observed [1]	DocuSign	69.8 exemplar	46.4 agent-ready	verified

Observability Management 1 providers · BC-4220.20 · Turbo EA

Observability Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Firebase Crashlytics	observed [1]	DocuSign	50.3 developing	14.2 agent-aware	verified

Payment Processing Management 1 providers · BC-1340.20 · Turbo EA

Payment Processing Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Stripe	observed [1]	Documenso	82.7 exemplar	58.5 agent-native	verified

Product Telemetry & Experimentation Management 1 providers · BC-4280 · Turbo EA

Product Telemetry & Experimentation Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Optimizely	observed [1]	DocuSign	79.6 exemplar	62.9 agent-ready	documented

Tag Management 1 providers · AE-911 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google Tag Manager	observed [1]	OpenSign	63.6 strong	38.2 agent-ready	none found

Reference apps

Documenso self-hosted

https://github.com/documenso/documenso

15 observed · 0 declared

observed ships the Amazon S3 SDK or integration code source
observed ships the Amazon SES SDK or integration code source
observed ships the Azure Blob Storage SDK or integration code source
observed ships the Browserless SDK or integration code source
observed ships the Cloudflare Turnstile SDK or integration code source
observed ships the Google Cloud HSM (KMS) SDK or integration code source
observed ships the Google sign-in SDK or integration code source
observed ships the Google Vertex AI SDK or integration code source
observed ships the Inngest SDK or integration code source
observed ships the MailChannels SDK or integration code source
observed ships the Microsoft sign-in SDK or integration code source
observed ships the Plain SDK or integration code source
observed ships the PostHog SDK or integration code source
observed ships the Resend SDK or integration code source
observed ships the Stripe SDK or integration code source

Read from: dependency manifest, source code

DocuSeal self-hosted

https://github.com/docusealco/docuseal

4 observed · 0 declared

observed ships the Amazon S3 SDK or integration code source
observed ships the AWS Secrets Manager SDK or integration code source
observed ships the Azure Blob Storage SDK or integration code source
observed ships the Google Cloud Storage SDK or integration code source

Read from: dependency manifest, documentation

OpenSign self-hosted

https://github.com/OpenSignLabs/OpenSign

6 observed · 1 declared

observed ships the Amazon S3 SDK or integration code source
observed ships the eID Easy SDK or integration code source
observed ships the Google APIs SDK or integration code source
observed ships the Google Tag Manager SDK or integration code source
observed ships the Mailgun SDK or integration code source
observed ships the PostHog SDK or integration code source
declared lists Zapier as an integration source

Read from: dependency manifest, dependency manifest, documentation

DocuSign commercial

https://www.docusign.com/

6 observed · 10 declared

observed ships the AppsFlyer SDK or integration code source
observed ships the Firebase Crashlytics SDK or integration code source
observed ships the Google Firebase Analytics SDK or integration code source
observed ships the Mixpanel SDK or integration code source
observed ships the Optimizely SDK or integration code source
observed ships the Wootric SDK or integration code source
declared lists Box as an integration source
declared lists CLEAR as an integration source
declared lists Google Workspace as an integration source
declared lists HubSpot as an integration source
declared lists Microsoft OneDrive as an integration source
declared lists Microsoft Power Automate as an integration source
declared lists monday.com as an integration source
declared lists Salesforce as an integration source
declared lists ServiceNow as an integration source
declared lists Workday as an integration source

Read from: Android build analysis (Exodus Privacy, reports.exodus-privacy.eu.org), integrations page

Dropbox Sign commercial

https://sign.dropbox.com/

0 observed · 18 declared

declared lists ActiveCampaign as an integration source
declared lists Coda as an integration source
declared lists Google Docs as an integration source
declared lists Google Drive as an integration source
declared lists Google Workspace as an integration source
declared lists Greenhouse as an integration source
declared lists HubSpot as an integration source
declared lists Ironclad as an integration source
declared lists Microsoft Dynamics 365 as an integration source
declared lists Microsoft OneDrive as an integration source
declared lists Microsoft Word as an integration source
declared lists PageUp as an integration source
declared lists Procore as an integration source
declared lists QQ Catalyst (Vertafore) as an integration source
declared lists Recruitee as an integration source
declared lists Salesforce as an integration source
declared lists Slack as an integration source
declared lists Zapier as an integration source

Read from: integrations page

Zoho Sign commercial

https://www.zoho.com/sign/

0 observed · 24 declared

declared lists Aadhaar eSign (UIDAI) as an integration source
declared lists Box as an integration source
declared lists Dropbox as an integration source
declared lists eID Easy as an integration source
declared lists eMudhra as an integration source
declared lists Formstack as an integration source
declared lists Gmail as an integration source
declared lists Google Drive as an integration source
declared lists Google Workspace as an integration source
declared lists HubSpot as an integration source
declared lists InfoCert as an integration source
declared lists Integrately as an integration source
declared lists Make as an integration source
declared lists Microsoft 365 as an integration source
declared lists Microsoft Teams as an integration source
declared lists OneDrive as an integration source
declared lists Outlook as an integration source
declared lists Pipedrive as an integration source
declared lists Power Automate as an integration source
declared lists Signicat as an integration source
declared lists Singpass as an integration source
declared lists Uanataca as an integration source
declared lists Vtiger as an integration source
declared lists Zapier as an integration source

Read from: integrations page

What these apps expose to agents

DocuSign: integrations page lists MCP connectors for Claude Code, ChatGPT, Gemini Enterprise, Copilot Studio, GitHub Copilot, Perplexity declared source

Where these apps are listed

apple-app-store: Business
google-play: Business
awesome-selfhosted: Document Management
salesforce-appexchange: Contract Management
hubspot-marketplace: Sales
zapier: Signatures