GoNitro

Nitro Software (GoNitro) is a document productivity company providing PDF editing, electronic signatures, redaction, and intelligent document automation for enterprises, small businesses, and professionals. Nitro exposes two public REST APIs on api.gonitro.dev: the Nitro PDF Services API (convert, transform, extract, and generate PDFs — conversions, compression, merge/split, OCR, redaction, PII detection, table and form extraction, and archival PDF/A) and the Nitro Sign API (enterprise eSignature envelope, document, participant, and field workflows with sealed documents and audit trails). Both use machine-to-machine OAuth 2.0 client-credentials, short-lived JWT bearer tokens, RFC 9457 problem+json errors, and asynchronous job processing. Nitro is ISO 27001, SOC 2, and HIPAA compliant and an accredited eIDAS Qualified Trust Service Provider.

GoNitro publishes 3 APIs on the APIs.io network: Authentication API, Platform API, and Sign API. Tagged areas include Company, Documents, PDF, E-Signature, and Electronic Signature.

The GoNitro catalog on APIs.io includes 1 event-driven AsyncAPI specification.

GoNitro’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 30 more developer resources.

🌐 Visit website 📡 Source on GitHub

56.8/100 strong ▬ flat Agent 29/100 agent ready Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessSelf serve

2 APIs 1 MCP Servers

Company Documents PDF E-Signature Electronic Signature Document Automation Document Conversion Data Extraction Redaction OCR Productivity Compliance

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 56.8/100 · strong

Contract Quality 11.0 / 19

Developer Ergonomics 9.6 / 15

Access Clarity 9.1 / 15

Operational Transparency 4.9 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 4.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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 github.com/api-evangelist/gonitro: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

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

GoNitro Authentication API

The Authentication API from GoNitro — 1 operation(s) for authentication.

GoNitro Platform API

The Platform API from GoNitro — 6 operation(s) for platform.

GoNitro Sign API

The Sign API from GoNitro — 22 operation(s) for sign.

Postman Collections 8

Ready-to-run Postman collections for exercising this provider's APIs.

Nitro PDF Services Public Authentication API

POSTMAN

Nitro PDF Services Public Authentication Conversions API

POSTMAN

Nitro PDF Services Public Authentication Extractions API

POSTMAN

Nitro PDF Services Public Authentication Generations API

POSTMAN

Nitro PDF Services Public Authentication Jobs API

POSTMAN

Nitro PDF Services Public Authentication Platform API

POSTMAN

Nitro PDF Services Public Authentication Sign API

POSTMAN

Nitro PDF Services Public Authentication Transformations API

POSTMAN

Scroll for all 8

Open Collections 9

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Nitro PDF Services Public Authentication API

OPEN COLLECTION

Nitro PDF Services Public Authentication Conversions API

OPEN COLLECTION

Nitro PDF Services Public Authentication Extractions API

OPEN COLLECTION

Nitro PDF Services Public Authentication Generations API

OPEN COLLECTION

Nitro PDF Services Public Authentication Jobs API

OPEN COLLECTION

Nitro PDF Services Public Authentication Platform API

OPEN COLLECTION

Nitro PDF Services Public Authentication Sign API

OPEN COLLECTION

Nitro PDF Services Public Authentication Transformations API

OPEN COLLECTION

Scroll for all 9

Arazzo Workflows 1

Multi-step API workflows described with the Arazzo specification.

Create and send a Nitro Sign envelope

Authenticate, create an envelope, add a document, participant, and signature field, then send it for signing.

ARAZZO

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Nitro PDF Services MCP

MCP SERVER

Event Specifications 1

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

Nitro Sign & PDF Services Webhooks

Event surface for Nitro. Sign delivers envelope lifecycle webhooks (HTTP POST) signed with RFC 9421 HTTP Message Signatures (HMAC-SHA256; headers Content-Digest, Signature-Input...

ASYNCAPI

Security Posture 3

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

Gonitro Authentication

http/oauth2 · 2 schemes

SECURITY

Gonitro Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Gonitro Trust Center

ISO 27001, SOC 2, HIPAA, QTSP (Qualified Trust Service Provider, accredited by LSTI under eIDAS), EU-U.S. Data Privacy Framework (with UK and Swiss extensions)

SECURITY

Agentic Access 1

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

Gonitro Agentic Access

45 operations · 28 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

AsyncAPI

AsyncAPI

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

AgentSkill

AgenticAccess

WellKnown

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Lifecycle

Webhooks

Conventions

ErrorCatalog

ErrorCodes

Conformance

DataModel

Arazzo

Scroll for all 8

Build 4

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

GitHubOrganization

GitHubOrganization

Postman

Postman

Packages

Packages

Access & Security 4

Authentication, authorization, and security posture

Compliance

TrustCenter

DomainSecurity

Authentication

Operate 4

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

Deprecation

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: gonitro
name: GoNitro
description: 'Nitro Software (GoNitro) is a document productivity company providing PDF editing, electronic signatures, redaction,
  and intelligent document automation for enterprises, small businesses, and professionals. Nitro exposes two public REST
  APIs on api.gonitro.dev: the Nitro PDF Services API (convert, transform, extract, and generate PDFs — conversions, compression,
  merge/split, OCR, redaction, PII detection, table and form extraction, and archival PDF/A) and the Nitro Sign API (enterprise
  eSignature envelope, document, participant, and field workflows with sealed documents and audit trails). Both use machine-to-machine
  OAuth 2.0 client-credentials, short-lived JWT bearer tokens, RFC 9457 problem+json errors, and asynchronous job processing.
  Nitro is ISO 27001, SOC 2, and HIPAA compliant and an accredited eIDAS Qualified Trust Service Provider.'
url: https://raw.githubusercontent.com/api-evangelist/gonitro/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: enriched
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
image: https://www.gonitro.com/hubfs/EN%20-%20Featured%20Images%20-%20Priority%20Pages%20-%20Home%20-%201200x628.png
tags:
- Company
- Documents
- PDF
- E-Signature
- Electronic Signature
- Document Automation
- Document Conversion
- Data Extraction
- Redaction
- OCR
- Productivity
- Compliance
tags_raw:
- Company
- Documents
- PDF
- eSignature
- Electronic Signatures
- Document Automation
- Document Conversion
- Data Extraction
- Redaction
- OCR
- Productivity
- Compliance
apis:
- aid: gonitro:gonitro-authentication-api
  name: GoNitro Authentication API
  description: The Authentication API from GoNitro — 1 operation(s) for authentication.
  humanURL: https://developers.gonitro.com/docs/api-reference/sign/create-envelope
  baseURL: https://api.gonitro.dev
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/gonitro-authentication-api-openapi.yml
- aid: gonitro:gonitro-platform-api
  name: GoNitro Platform API
  description: The Platform API from GoNitro — 6 operation(s) for platform.
  humanURL: https://developers.gonitro.com/docs/api-reference/sign/create-envelope
  baseURL: https://api.gonitro.dev
  tags:
  - Platform
  properties:
  - type: OpenAPI
    url: openapi/gonitro-platform-api-openapi.yml
- aid: gonitro:gonitro-sign-api
  name: GoNitro Sign API
  description: The Sign API from GoNitro — 22 operation(s) for sign.
  humanURL: https://developers.gonitro.com/docs/api-reference/sign/create-envelope
  baseURL: https://api.gonitro.dev
  tags:
  - Sign
  properties:
  - type: OpenAPI
    url: openapi/gonitro-sign-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/gonitro-pdf-services-overlay.yaml
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/gonitro/overview
- type: Website
  url: https://www.gonitro.com
- type: DeveloperPortal
  url: https://developers.gonitro.com
- type: Documentation
  url: https://developers.gonitro.com/docs
- type: APIReference
  url: https://developers.gonitro.com/docs/api-reference/changelog
- type: GettingStarted
  url: https://developers.gonitro.com/docs/getting-started/basic-setup
- type: Support
  url: https://www.gonitro.com/support
- type: Blog
  url: https://www.gonitro.com/blog
- type: GitHubOrganization
  url: https://github.com/Nitro
- type: Pricing
  url: https://www.gonitro.com/pricing
- type: SignUp
  url: https://developers.gonitro.com/docs/authentication/credentials
- type: TermsOfService
  url: https://www.gonitro.com/legal/terms-of-service
- type: PrivacyPolicy
  url: https://www.gonitro.com/legal/privacy-policy
- type: Postman
  url: https://raw.githubusercontent.com/Nitro/nitro-platform-sample-code/main/postman/Nitro%20Automation%20Platform%20APIs.postman_collection.json
- type: StatusPage
  url: https://status.gonitro.com
- type: ChangeLog
  url: changelog/gonitro-changelog.yml
- type: Deprecation
  url: lifecycle/gonitro-lifecycle.yml
- type: Lifecycle
  url: lifecycle/gonitro-lifecycle.yml
- type: Webhooks
  url: asyncapi/gonitro-sign-asyncapi.yml
- type: AsyncAPI
  url: asyncapi/gonitro-sign-asyncapi.yml
- type: Compliance
  url: https://www.gonitro.com/trust-center/compliance
- type: TrustCenter
  url: security/gonitro-trust-center.yml
- type: DomainSecurity
  url: security/gonitro-domain-security.yml
- type: Authentication
  url: authentication/gonitro-authentication.yml
- type: Conventions
  url: conventions/gonitro-conventions.yml
- type: ErrorCatalog
  url: errors/gonitro-problem-types.yml
- type: ErrorCodes
  url: errors/gonitro-error-codes.yml
- type: Conformance
  url: conformance/gonitro-conformance.yml
- type: DataModel
  url: data-model/gonitro-data-model.yml
- type: MCPServer
  url: mcp/gonitro-mcp.yml
- type: LLMsTxt
  url: llms/gonitro-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/gonitro-agentic-access.yml
- type: Packages
  url: packages/gonitro-packages.yml
- type: WellKnown
  url: well-known/gonitro-well-known.yml
- type: Arazzo
  name: Create and send a Nitro Sign envelope
  url: arazzo/gonitro-create-and-send-envelope.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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