justfill-app

JustFill is an AI‑powered web application that fills out PDF forms, including scanned and non‑fillable documents. By detecting form fields visually, it lets users type data, upload CSV/Excel rows, and generate filled PDFs automatically. The service offers free and paid plans, supports voice dictation, batch processing, and ensures data security with encryption and limited retention. It operates entirely in the browser without requiring Adobe.

justfill-app is listed with 2 APIs on the APIs.io network. Tagged areas include Company, AI, PDF, FormFilling, and SaaS.

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

justfill-app’s developer surface includes documentation, getting-started guide, pricing, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.7/100 thin Agent 36/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 APIs

CompanyAIPDFFormFillingSaaS

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 34.7/100 · thin

Contract Quality 4.0 / 21

Developer Ergonomics 3.6 / 17

Access Clarity 10.7 / 17

Operational Transparency 1.2 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 5.6 / 15

Agent readiness — 36/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

7 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 18.9 — up to +20.3 composite points
Developer Ergonomics scores 21.4 — up to +15.7 composite points
Operational Transparency scores 10.5 — up to +11.6 composite points

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.

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/justfill-app/apis.yml: open an issue on github.com/api-evangelist/justfill-app 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 →

APIs 2

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

JustFill API

JustFill PDF Automation API (MCP) for programmatic PDF form filling.

justfill-app API

justfill-app API as documented publicly: 3 operations. Contract generated from the documentation by API Evangelist (2026-10-30); not the provider's own document.

Pricing Plans 1

Published pricing tiers and plan structures.

Justfill App Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Justfill App Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

Justfill App Context

2 classes · 1 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

justfill-app API Rules

9 rules · 7 errors 1 warnings 1 info

SPECTRAL

JSON Schema 2

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

GetApiAuthDataExportArchiveResponse

1 properties

JSON SCHEMA

GetApiAuthDataExportResponse

3 properties

JSON SCHEMA

Security Posture 3

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

Justfill App Authentication

0 schemes

SECURITY

Justfill App Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Justfill App Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Justfill App Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Access & Security 4

Authentication, authorization, and security posture

Security

Security

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: justfill-app
name: justfill-app
description: JustFill is an AI‑powered web application that fills out PDF forms, including scanned and non‑fillable documents.
  By detecting form fields visually, it lets users type data, upload CSV/Excel rows, and generate filled PDFs automatically.
  The service offers free and paid plans, supports voice dictation, batch processing, and ensures data security with encryption
  and limited retention. It operates entirely in the browser without requiring Adobe.
url: https://artifacts.apis.io/justfill-app/apis.yml
image: https://justfill.app/favicon.svg
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- AI
- PDF
- FormFilling
- SaaS
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/justfill-app-plans-pricing.yml
- type: Spectral
  url: rules/justfill-app-rules.yml
- type: JSONLD
  url: json-ld/justfill-app-context.jsonld
- type: Vocabulary
  url: vocabulary/justfill-app-vocabulary.yml
- type: DataModel
  url: data-model/justfill-app-data-model.yml
- type: Security
  url: https://justfill.app/terms
- type: Conformance
  url: conformance/justfill-app-conformance.yml
- type: LLMsTxt
  url: llms/justfill-app-llms.txt
- type: SecurityTxt
  url: well-known/justfill-app-security.txt
- type: WellKnown
  url: well-known/justfill-app-well-known.yml
- type: Hosts
  url: hosts/justfill-app-hosts.yml
- type: TermsOfService
  url: https://justfill.app/terms
- type: PrivacyPolicy
  url: https://justfill.app/privacy
- type: Documentation
  url: https://justfill.app/guides/canva-fillable-pdf
- type: GettingStarted
  url: https://justfill.app/solutions/i-9-bulk-onboarding
- type: VulnerabilityDisclosure
  url: security/justfill-app-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/justfill-app-domain-security.yml
- type: Website
  url: https://justfill.app/
- type: Pricing
  url: https://justfill.app/pricing
apis:
- name: JustFill API
  description: JustFill PDF Automation API (MCP) for programmatic PDF form filling.
  humanURL: https://justfill.app/mcp
  baseURL: https://api.justfill.app
  aid: justfill-app:justfill-api
- aid: justfill-app:justfill-app-api
  name: justfill-app API
  description: 'justfill-app API as documented publicly: 3 operations. Contract generated from the documentation by API Evangelist
    (2026-10-30);

    not the provider''s own document.'
  humanURL: https://justfill.app/research/are-government-forms-fillable
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/justfill-app-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/justfill-app-get-api-auth-data-export-archive-response-schema.json
  - type: JSONSchema
    url: json-schema/justfill-app-get-api-auth-data-export-response-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: No OpenAPI, AsyncAPI, GraphQL, or other machine‑readable contract was found on the provider's hosts despite probing
    common spec URLs.
  evidence:
  - url: https://justfill.app/openapi.json
    status: 404
  checked: '2026-10-30'
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 35
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

justfill-app API — frequently asked questions

Does justfill-app have an API?

Yes. APIs.io lists 2 APIs from justfill-app, including JustFill API and justfill-app API.

Is there an OpenAPI specification for the justfill-app API?

Yes. APIs.io indexes 1 OpenAPI specification for justfill-app, each linked for download from this page.

How do I authenticate with the justfill-app API?

justfill-app documents its authentication (0 schemes). The details are profiled on APIs.io as Justfill App Authentication.

How much does the justfill-app API cost?

APIs.io lists 5 pricing plans for justfill-app, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the justfill-app API ready for AI agents?

justfill-app has a Kin Score of 34.7 out of 100 (thin) and an Agent Readiness score of 35.6 (agent-ready), scored by API Evangelist on 2026-10-31.

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