PDFfiller

PDFfiller is an online PDF editing and e-signature platform that provides a REST API for filling, editing, signing, converting, and managing PDF documents programmatically. The API enables developers to embed PDF editing, form-building, signature request workflows, and document management capabilities into their own applications. It is part of the airSlate family of products and supports OAuth 2.0 authentication with a base URL of https://api.pdffiller.com/v2/.

PDFfiller publishes 11 APIs on the APIs.io network, including Applications API, Auth API, Callbacks API, and 8 more. Tagged areas include PDF, E-Signature, Document Management, Form Builder, and PDF Editing.

The PDFfiller catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

PDFfiller’s developer surface includes authentication, documentation, engineering blog, pricing, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

47.9/100 developing ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemiumSelf serveFree trial⚡ Free to try

11 APIs

PDFE-SignatureDocument ManagementForm BuilderPDF EditingElectronic SignatureDocument Workflow

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 47.9/100 · developing

Contract Quality 16.7 / 25

Developer Ergonomics 6.1 / 20

Commercial Clarity 10.0 / 20

Operational Transparency 0.7 / 13

Governance 7.0 / 12

Discoverability 7.4 / 10

Agent readiness — 31/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/pdffiller: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 11

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

Rate Limits 1

Documented rate limits and quota policies.

Pdffiller Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

JSON Schema 3

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

Examples 3

Example request and response payloads for these APIs.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Pdffiller Scopes

2 scopes · password/clientCredentials

2 scopes

SCOPES

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: pdffiller
name: PDFfiller
description: PDFfiller is an online PDF editing and e-signature platform that provides a REST API for filling, editing, signing,
  converting, and managing PDF documents programmatically. The API enables developers to embed PDF editing, form-building,
  signature request workflows, and document management capabilities into their own applications. It is part of the airSlate
  family of products and supports OAuth 2.0 authentication with a base URL of https://api.pdffiller.com/v2/.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Freemium (free trial) · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/pdffiller.png
url: https://raw.githubusercontent.com/api-evangelist/pdffiller/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- PDF
- E-Signature
- Document Management
- Form Builder
- PDF Editing
- Electronic Signature
- Document Workflow
apis:
- aid: pdffiller:pdffiller-applications-api
  name: PDFfiller Applications API
  description: Manage OAuth applications
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Applications
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-applications-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- aid: pdffiller:pdffiller-auth-api
  name: PDFfiller Auth API
  description: OAuth 2.0 authentication token management
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Auth
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-auth-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- aid: pdffiller:pdffiller-callbacks-api
  name: PDFfiller Callbacks API
  description: Manage webhook callbacks for document events
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Callbacks
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-callbacks-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- aid: pdffiller:pdffiller-custom-logos-api
  name: PDFfiller Custom Logos API
  description: Manage custom branding logos
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Custom Logos
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-custom-logos-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- aid: pdffiller:pdffiller-fillable-forms-api
  name: PDFfiller Fillable Forms API
  description: Manage fillable form links and submissions
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Fillable Forms
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-fillable-forms-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- aid: pdffiller:pdffiller-folders-api
  name: PDFfiller Folders API
  description: Organize documents into folders
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Folders
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-folders-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- aid: pdffiller:pdffiller-signature-requests-api
  name: PDFfiller Signature Requests API
  description: Manage eSignature requests and workflows
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Signature Requests
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-signature-requests-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- aid: pdffiller:pdffiller-templates-api
  name: PDFfiller Templates API
  description: Manage PDF document templates
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Templates
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-templates-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- aid: pdffiller:pdffiller-tokens-api
  name: PDFfiller Tokens API
  description: Manage embedded document tokens
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-tokens-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- aid: pdffiller:pdffiller-tools-api
  name: PDFfiller Tools API
  description: Document utility tools (merge, convert)
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Tools
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-tools-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- aid: pdffiller:pdffiller-users-api
  name: PDFfiller Users API
  description: Retrieve current user information
  humanURL: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
  baseURL: https://api.pdffiller.com/v2/
  tags:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/pdffiller-users-api-openapi.yml
  - type: Documentation
    url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
common:
- type: AgenticAccess
  url: agentic-access/pdffiller-agentic-access.yml
- type: DomainSecurity
  url: security/pdffiller-domain-security.yml
- type: Authentication
  url: authentication/pdffiller-authentication.yml
- type: OAuthScopes
  url: scopes/pdffiller-scopes.yml
- type: Website
  url: https://www.pdffiller.com
- type: Documentation
  url: https://docs.pdffiller.com/docs/pdffiller/zmnt034fyekxf-pdf-filler-api
- type: DeveloperPortal
  url: https://developers.pdffiller.com
- type: GitHubOrg
  url: https://github.com/pdffiller
- type: LinkedIn
  url: https://www.linkedin.com/company/pdffiller-com
- type: Blog
  url: https://blog.pdffiller.com
- type: Pricing
  url: https://www.pdffiller.com/en/pdf-api-pricing.htm
- type: X
  url: https://x.com/pdf_filler
- type: Plans
  url: plans/pdffiller-plans-pricing.yml
- type: RateLimits
  url: rate-limits/pdffiller-rate-limits.yml
- type: FinOps
  url: finops/pdffiller-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com