InkSeal

InkSeal provides a digital document signing platform that allows users to upload PDFs, Word files, or images and convert them into signable PDFs. Signers can review, sign, and return documents via a private link without needing an account. The service offers a credit‑based pricing model with no subscriptions, supporting individual and team workflows. Features include customizable signing fields, automatic reminders, audit trails, and integration options for developers through a RESTful API. InkSeal aims to simplify contract execution and document management for businesses of all sizes.

InkSeal publishes 10 API contracts indexed on the APIs.io network, including Account API, Credentials API, Credits API, and 7 more. Tagged areas include E-Signature, Developer API, and Credit Pricing.

The InkSeal catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

InkSeal’s developer surface includes CLI, changelog, authentication, signup flow, documentation, API reference, getting-started guide, and 25 more developer resources.

54.9/100 strong Agent 56/100 agent native Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →
AccessPaidSelf serve
1 published contract 5 Agent Skills
E-SignatureDeveloper APICredit Pricing

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0
Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
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Agent readiness — checks not met, largest first (exact, from this profile):
2 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.
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Ask about:
Inkseal Net · a person reads this and replies by email.
or email info@apis.io
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/inkseal-net/apis.yml: open an issue on github.com/api-evangelist/inkseal-net to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

measured — observed by APIs.io (published)
measured — observed by APIs.io (published)

APIs 10

Individual APIs this provider publishes, each with its own machine-readable definition.

InkSeal Account API

Workspace settings, the inbound mail inbox, the addresses it accepts documents from, and the account summary.

InkSeal Credentials API

Service credentials: minting, rotating, narrowing, and revoking API keys.

InkSeal Credits API

The workspace credit balance, its transaction history, and buying more.

InkSeal Detection API

AI field detection runs over a normalized document, and their results.

InkSeal Documents API

Uploading files, tracking normalization, and reading the normalized PDF and its page images.

InkSeal Envelopes API

Draft envelopes, signers, fields, sending for signature, and the signing evidence.

InkSeal Inbound Requests API

Envelopes the mail agent drafted from an inbound email, and their approval or cancellation.

InkSeal Public links API

Publish a template for respondents to fill and confirm by email.

InkSeal Templates API

Reusable document layouts with named roles and fields.

InkSeal Webhooks API

Webhook subscriptions, their delivery history, and manual retries.

Scroll for all 10

Agent Skills 5

Packaged agent skills for driving this provider's APIs from an AI assistant.

InkSeal API pricing

Prices published by InkSeal, read 2026-11-12 from inkseal.net/pricing.

PlanPrice
Starter $9
Standard $39
Professional $69
Business $119
Enterprise $499

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

InkSeal Plans Pricing

5 plans

PLANS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Inkseal Net Context

120 classes · 232 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

InkSeal API Rules

67 rules · 57 error-severity 6 warn-severity 4 info-severity

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

AuditTrailEntry

9 properties

JSON SCHEMA

AuthorizedSender

10 properties

JSON SCHEMA

DetectionRun

22 properties

JSON SCHEMA

EnvelopeCreated

17 properties

JSON SCHEMA

EnvelopeDetail

23 properties

JSON SCHEMA

StructuredEnvelopeField

16 properties

JSON SCHEMA

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

InkSeal Authentication

2 schemes

SECURITY

InkSeal Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

InkSeal Agentic Access

76 operations · 41 acting · 2 human-in-the-loop

76 operations · 41 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Scroll for all 10

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 3

Status, limits, changes, and where to get help

Commercial 4

Pricing, plans, and the legal terms of use

Company 1

The organization behind the API

Other 2

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: inkseal-net
name: InkSeal
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Paid · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://inkseal.net/opengraph-image-pwu6ef?c7af3eeb8c4cd993
description: InkSeal provides a digital document signing platform that allows users to upload PDFs, Word files, or images
  and convert them into signable PDFs. Signers can review, sign, and return documents via a private link without needing an
  account. The service offers a credit‑based pricing model with no subscriptions, supporting individual and team workflows.
  Features include customizable signing fields, automatic reminders, audit trails, and integration options for developers
  through a RESTful API. InkSeal aims to simplify contract execution and document management for businesses of all sizes.
url: https://artifacts.apis.io/inkseal-net/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-12 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-12'
modified: '2026-11-12'
tags:
- E-Signature
- Developer API
- Credit Pricing
tags_raw:
- Document Signing
- Developer API
- Credit Pricing
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/inkseal-net-agentic-access.yml
- type: Plans
  url: plans/inkseal-net-plans-pricing.yml
- type: Spectral
  url: rules/inkseal-net-rules.yml
- type: JSONLD
  url: json-ld/inkseal-net-context.jsonld
- type: Vocabulary
  url: vocabulary/inkseal-net-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Webhooks
  url: asyncapi/inkseal-net-webhooks.yml
- type: DataModel
  url: data-model/inkseal-net-data-model.yml
- type: CLI
  url: cli/inkseal-net-cli.yml
- type: ChangeLog
  url: changelog/inkseal-net-changelog.yml
- type: Idempotency
  url: conventions/inkseal-net-conventions.yml
- type: Conventions
  url: conventions/inkseal-net-conventions.yml
- type: Authentication
  url: authentication/inkseal-net-authentication.yml
- type: Deprecation
  url: https://inkseal.net/docs/api/versioning.md
- type: Lifecycle
  url: lifecycle/inkseal-net-lifecycle.yml
- type: ErrorCatalog
  url: errors/inkseal-net-problem-types.yml
- type: Conformance
  url: conformance/inkseal-net-conformance.yml
- type: LLMsTxt
  url: llms/inkseal-net-llms.txt
- type: WellKnown
  url: well-known/inkseal-net-well-known.yml
- type: Hosts
  url: hosts/inkseal-net-hosts.yml
- type: Vendors
  url: vendors/inkseal-net-vendors.yml
- type: DeveloperPortal
  url: https://inkseal.net/developers
- type: ChangeLog
  url: https://inkseal.net/docs/changelog
- type: SignUp
  url: https://inkseal.net/sign-up
- type: DomainSecurity
  url: security/inkseal-net-domain-security.yml
- type: Website
  url: https://inkseal.net/
- type: Documentation
  url: https://inkseal.net/docs
- type: APIReference
  url: https://inkseal.net/api/openapi.json
- type: GettingStarted
  url: https://inkseal.net/docs/getting-started
- type: Pricing
  url: https://inkseal.net/pricing
- type: PrivacyPolicy
  url: https://inkseal.net/privacy
- type: TermsOfService
  url: https://inkseal.net/terms
apis:
- aid: inkseal-net:inkseal-net-account-api
  name: InkSeal Account API
  description: Workspace settings, the inbound mail inbox, the addresses it accepts documents from, and the account summary.
  humanURL: https://inkseal.net/docs/api/reference
  baseURL: https://inkseal.net/api/v1
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/inkseal-net-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-detail-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-detection-run-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-created-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-audit-trail-entry-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-structured-envelope-field-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-authorized-sender-schema.json
- aid: inkseal-net:inkseal-net-credentials-api
  name: InkSeal Credentials API
  description: 'Service credentials: minting, rotating, narrowing, and revoking API keys.'
  humanURL: https://inkseal.net/docs/api/reference
  baseURL: https://inkseal.net/api/v1
  tags:
  - Credentials
  properties:
  - type: OpenAPI
    url: openapi/inkseal-net-credentials-api-openapi.yml
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-detail-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-detection-run-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-created-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-audit-trail-entry-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-structured-envelope-field-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-authorized-sender-schema.json
- aid: inkseal-net:inkseal-net-credits-api
  name: InkSeal Credits API
  description: The workspace credit balance, its transaction history, and buying more.
  humanURL: https://inkseal.net/docs/api/reference
  baseURL: https://inkseal.net/api/v1
  tags:
  - Credit
  tags_raw:
  - Credits
  properties:
  - type: OpenAPI
    url: openapi/inkseal-net-credits-api-openapi.yml
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-detail-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-detection-run-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-created-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-audit-trail-entry-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-structured-envelope-field-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-authorized-sender-schema.json
- aid: inkseal-net:inkseal-net-detection-api
  name: InkSeal Detection API
  description: AI field detection runs over a normalized document, and their results.
  humanURL: https://inkseal.net/docs/api/reference
  baseURL: https://inkseal.net/api/v1
  tags:
  - Detection
  properties:
  - type: OpenAPI
    url: openapi/inkseal-net-detection-api-openapi.yml
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-detail-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-detection-run-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-created-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-audit-trail-entry-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-structured-envelope-field-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-authorized-sender-schema.json
- aid: inkseal-net:inkseal-net-documents-api
  name: InkSeal Documents API
  description: Uploading files, tracking normalization, and reading the normalized PDF and its page images.
  humanURL: https://inkseal.net/docs/api/reference
  baseURL: https://inkseal.net/api/v1
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/inkseal-net-documents-api-openapi.yml
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-detail-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-detection-run-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-created-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-audit-trail-entry-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-structured-envelope-field-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-authorized-sender-schema.json
- aid: inkseal-net:inkseal-net-envelopes-api
  name: InkSeal Envelopes API
  description: Draft envelopes, signers, fields, sending for signature, and the signing evidence.
  humanURL: https://inkseal.net/docs/api/reference
  baseURL: https://inkseal.net/api/v1
  tags:
  - Envelopes
  properties:
  - type: OpenAPI
    url: openapi/inkseal-net-envelopes-api-openapi.yml
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-detail-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-detection-run-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-created-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-audit-trail-entry-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-structured-envelope-field-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-authorized-sender-schema.json
- aid: inkseal-net:inkseal-net-inbound-requests-api
  name: InkSeal Inbound Requests API
  description: Envelopes the mail agent drafted from an inbound email, and their approval or cancellation.
  humanURL: https://inkseal.net/docs/api/reference
  baseURL: https://inkseal.net/api/v1
  tags:
  - Inbound Requests
  properties:
  - type: OpenAPI
    url: openapi/inkseal-net-inbound-requests-api-openapi.yml
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-detail-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-detection-run-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-created-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-audit-trail-entry-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-structured-envelope-field-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-authorized-sender-schema.json
- aid: inkseal-net:inkseal-net-public-links-api
  name: InkSeal Public links API
  description: Publish a template for respondents to fill and confirm by email.
  humanURL: https://inkseal.net/docs/api/reference
  baseURL: https://inkseal.net/api/v1
  tags:
  - Public Links
  tags_raw:
  - Public links
  properties:
  - type: OpenAPI
    url: openapi/inkseal-net-public-links-api-openapi.yml
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-detail-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-detection-run-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-created-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-audit-trail-entry-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-structured-envelope-field-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-authorized-sender-schema.json
- aid: inkseal-net:inkseal-net-templates-api
  name: InkSeal Templates API
  description: Reusable document layouts with named roles and fields.
  humanURL: https://inkseal.net/docs/api/reference
  baseURL: https://inkseal.net/api/v1
  tags:
  - Templates
  properties:
  - type: OpenAPI
    url: openapi/inkseal-net-templates-api-openapi.yml
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-detail-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-detection-run-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-created-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-audit-trail-entry-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-structured-envelope-field-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-authorized-sender-schema.json
- aid: inkseal-net:inkseal-net-webhooks-api
  name: InkSeal Webhooks API
  description: Webhook subscriptions, their delivery history, and manual retries.
  humanURL: https://inkseal.net/docs/api/reference
  baseURL: https://inkseal.net/api/v1
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/inkseal-net-webhooks-api-openapi.yml
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-detail-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-detection-run-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-envelope-created-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-audit-trail-entry-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-structured-envelope-field-schema.json
  - type: JSONSchema
    url: json-schema/inkseal-net-authorized-sender-schema.json
x-enrichment:
  date: '2026-11-12'
  status: enriched
  artifacts_added: 38
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

InkSeal API — frequently asked questions

Does InkSeal have an API?

Yes. APIs.io lists 10 APIs from InkSeal, including InkSeal Account API, InkSeal Credentials API and InkSeal Credits API, and 7 more.

Is there an OpenAPI specification for the InkSeal API?

Yes. APIs.io indexes 10 OpenAPI specifications for InkSeal, each linked for download from this page.

How do I authenticate with the InkSeal API?

InkSeal documents its authentication (2 schemes). The details are profiled on APIs.io as InkSeal Authentication.

How much does the InkSeal API cost?

InkSeal publishes its prices; its Starter plan is $9 as of 2026-11-12. APIs.io lists 5 pricing plans for InkSeal, with each plan's price, limits and inclusions under Pricing on this page.

Is the InkSeal API ready for AI agents?

InkSeal has a Kin Score of 54.9 out of 100 (strong) and an Agent Readiness score of 55.6 (agent-native), scored by API Evangelist on 2026-11-13.

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