# PDFfiller

**Canonical:** https://apis.io/providers/pdffiller/  
**Website:** https://www.pdffiller.com  
**APIs profiled:** 11

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/.

## Kin Score — 41.6 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 41.6).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 64.4 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 31.0 |
| Commercial Clarity | 50.0 |
| Access Clarity | 50.0 |

## Agent readiness — 29.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium (free trial) · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: yes (confidence: high).

## APIs (11)

- **PDFfiller Applications API** — Manage OAuth applications
- **PDFfiller Auth API** — OAuth 2.0 authentication token management
- **PDFfiller Callbacks API** — Manage webhook callbacks for document events
- **PDFfiller Custom Logos API** — Manage custom branding logos
- **PDFfiller Fillable Forms API** — Manage fillable form links and submissions
- **PDFfiller Folders API** — Organize documents into folders
- **PDFfiller Signature Requests API** — Manage eSignature requests and workflows
- **PDFfiller Templates API** — Manage PDF document templates
- **PDFfiller Tokens API** — Manage embedded document tokens
- **PDFfiller Tools API** — Document utility tools (merge, convert)
- **PDFfiller Users API** — Retrieve current user information

## Agentic access (1)

- **Pdffiller Agentic Access** — 73 operations · 28 acting

## Security (2)

- **Pdffiller Authentication** — oauth2 · 1 scheme
- **Pdffiller Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Pdffiller Plans Pricing**

## Tags

PDF, E-Signature, Document-Management, Form Builder, PDF Editing, Electronic Signature, Document Workflow

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/pdffiller/). Scores are computed from the provider's own public artifacts under a published rubric.