Filen

Filen provides next‑generation end‑to‑end encrypted cloud storage, offering zero‑knowledge security for individuals and teams. Its platform includes web, desktop, mobile, and CLI clients, a network drive feature, and a focus on privacy, transparency, and open‑source tools. Users can store, sync, and share files securely without the provider ever accessing the data.

Filen publishes 7 API contracts indexed on the APIs.io network, including Health API, Items API, Items: Directories API, and 4 more. Tagged areas include Company, Cloud Storage, Encryption, Zero Knowledge, and File Sync.

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

Filen’s developer surface includes CLI, authentication, getting-started guide, documentation, pricing, support, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

55.1/100 strong Agent 29/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 published contracts

Company Cloud Storage Encryption Zero KnowledgeFile Sync

Kin Score

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

Composite quality — 55.1/100 · strong

Contract Quality 11.1 / 21

Developer Ergonomics 8.9 / 17

Access Clarity 13.4 / 17

Operational Transparency 1.7 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 6.8 / 15

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 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

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
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
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

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 52.0 — up to +12.0 composite points
Operational Transparency scores 15.8 — up to +10.9 composite points
Developer Ergonomics scores 52.4 — up to +9.5 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/filen/apis.yml: open an issue on github.com/api-evangelist/filen 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 7

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

Filen Health API

The Health API from Filen — 1 operation(s) for health.

Filen Items API

The Items API from Filen — 3 operation(s) for items.

Filen Items: Directories API

The Items: Directories API from Filen — 15 operation(s) for items: directories.

Filen Items: Files API

The Items: Files API from Filen — 9 operation(s) for items: files.

Filen Public Links API

The Public Links API from Filen — 15 operation(s) for public links.

Filen Shared API

The Shared API from Filen — 8 operation(s) for shared.

Filen User API

The User API from Filen — 7 operation(s) for user.

Scroll for all 7

Pricing Plans 1

Published pricing tiers and plan structures.

Filen Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Filen Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

Filen Context

1 classes · 3 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Filen API Rules

12 rules · 8 errors 3 warnings 1 info

SPECTRAL

OpenAPI Overlays 2

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Filen Openapi Generated Overlay

0 actions · update · filen-openapi-generated.yaml

GENERATED

Filen Openapi Overlay

0 actions · update

UNRECORDED

JSON Schema 1

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

response

3 properties

JSON SCHEMA

Security Posture 4

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

Filen Authentication

1 scheme

SECURITY

Filen Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Filen Vulnerability Disclosure

no policy recorded

SECURITY

Filen Trust Center

ISO 27001, GDPR

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Filen Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Filen Agentic Access

58 operations · 37 acting

AGENTIC

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 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

CLI

CLI

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

Compliance

Authentication

Security

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: filen
name: Filen
image: https://filen.io/og.png
description: Filen provides next‑generation end‑to‑end encrypted cloud storage, offering zero‑knowledge security for individuals
  and teams. Its platform includes web, desktop, mobile, and CLI clients, a network drive feature, and a focus on privacy,
  transparency, and open‑source tools. Users can store, sync, and share files securely without the provider ever accessing
  the data.
url: https://raw.githubusercontent.com/api-evangelist/filen/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-28 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-28'
modified: '2026-10-28'
tags:
- Company
- Cloud Storage
- Encryption
- Zero Knowledge
- File Sync
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/filen-agentic-access.yml
- type: Plans
  url: plans/filen-plans-pricing.yml
- type: Spectral
  url: rules/filen-rules.yml
- type: JSONLD
  url: json-ld/filen-context.jsonld
- type: Vocabulary
  url: vocabulary/filen-vocabulary.yml
- type: DataModel
  url: data-model/filen-data-model.yml
- type: CLI
  url: cli/filen-cli.yml
- type: Compliance
  url: https://filen.io/security
- type: Authentication
  url: authentication/filen-authentication.yml
- type: Conformance
  url: conformance/filen-conformance.yml
- type: Hosts
  url: hosts/filen-hosts.yml
- type: Vendors
  url: vendors/filen-vendors.yml
- type: SDKs
  url: packages/filen-packages.yml
- type: Packages
  url: packages/filen-packages.yml
- type: Security
  url: https://filen.io/security
- type: GitHubOrganization
  url: https://github.com/FilenCloudDienste
- type: GettingStarted
  url: https://docs.filen.io/docs/desktop/setup
- type: TrustCenter
  url: security/filen-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/filen-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/filen-domain-security.yml
- type: Website
  url: https://filen.io/
- type: Documentation
  url: https://docs.filen.io
- type: Pricing
  url: https://filen.io/pricing
- type: TermsOfService
  url: https://filen.io/terms
- type: PrivacyPolicy
  url: https://filen.io/privacy
- type: Support
  url: https://filen.io/hub
apis:
- aid: filen:filen-health-api
  name: Filen Health API
  description: The Health API from Filen — 1 operation(s) for health.
  humanURL: https://docs.filen.io/docs/api/specs
  baseURL: https://gateway.filen.io/v3
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/filen-health-api-openapi.yml
  - type: JSONSchema
    url: json-schema/filen-response-schema.json
- aid: filen:filen-items-api
  name: Filen Items API
  description: The Items API from Filen — 3 operation(s) for items.
  humanURL: https://docs.filen.io/docs/api/specs
  baseURL: https://gateway.filen.io/v3
  tags:
  - Items
  properties:
  - type: OpenAPI
    url: openapi/filen-items-api-openapi.yml
  - type: JSONSchema
    url: json-schema/filen-response-schema.json
- aid: filen:filen-items-directories-api
  name: 'Filen Items: Directories API'
  description: 'The Items: Directories API from Filen — 15 operation(s) for items: directories.'
  humanURL: https://docs.filen.io/docs/api/specs
  baseURL: https://gateway.filen.io/v3
  tags:
  - 'Items: Directories'
  properties:
  - type: OpenAPI
    url: openapi/filen-items-directories-api-openapi.yml
  - type: JSONSchema
    url: json-schema/filen-response-schema.json
- aid: filen:filen-items-files-api
  name: 'Filen Items: Files API'
  description: 'The Items: Files API from Filen — 9 operation(s) for items: files.'
  humanURL: https://docs.filen.io/docs/api/specs
  baseURL: https://gateway.filen.io/v3
  tags:
  - 'Items: Files'
  properties:
  - type: OpenAPI
    url: openapi/filen-items-files-api-openapi.yml
  - type: JSONSchema
    url: json-schema/filen-response-schema.json
- aid: filen:filen-public-links-api
  name: Filen Public Links API
  description: The Public Links API from Filen — 15 operation(s) for public links.
  humanURL: https://docs.filen.io/docs/api/specs
  baseURL: https://gateway.filen.io/v3
  tags:
  - Public Links
  properties:
  - type: OpenAPI
    url: openapi/filen-public-links-api-openapi.yml
  - type: JSONSchema
    url: json-schema/filen-response-schema.json
- aid: filen:filen-shared-api
  name: Filen Shared API
  description: The Shared API from Filen — 8 operation(s) for shared.
  humanURL: https://docs.filen.io/docs/api/specs
  baseURL: https://gateway.filen.io/v3
  tags:
  - Shared
  properties:
  - type: OpenAPI
    url: openapi/filen-shared-api-openapi.yml
  - type: JSONSchema
    url: json-schema/filen-response-schema.json
- aid: filen:filen-user-api
  name: Filen User API
  description: The User API from Filen — 7 operation(s) for user.
  humanURL: https://docs.filen.io/docs/api/specs
  baseURL: https://gateway.filen.io/v3
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/filen-user-api-openapi.yml
  - type: JSONSchema
    url: json-schema/filen-response-schema.json
x-submission-probe: 200, 2026-10-26
x-enrichment:
  date: '2026-10-28'
  status: enriched
  artifacts_added: 23
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Filen API — frequently asked questions

Does Filen have an API?

Yes. APIs.io lists 7 APIs from Filen, including Filen Health API, Filen Items API and Filen Items: Directories API, and 4 more.

Is there an OpenAPI specification for the Filen API?

Yes. APIs.io indexes 7 OpenAPI specifications for Filen, each linked for download from this page.

How do I authenticate with the Filen API?

Filen uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Filen Authentication.

How much does the Filen API cost?

APIs.io lists 4 pricing plans for Filen, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Filen API ready for AI agents?

Filen has a Kin Score of 55.1 out of 100 (strong) and an Agent Readiness score of 29.2 (agent-ready), scored by API Evangelist on 2026-10-31.

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