Anvil

aid: anvil
name: Anvil
description: Anvil is a PDF infrastructure platform providing REST and GraphQL APIs for filling PDF templates with JSON data,
  generating PDFs from HTML or Markdown, collecting e-signatures (Etch), building web forms, and extracting data from documents
  via OCR and Document AI. Designed for developers embedding paperwork automation into applications across HR, insurance,
  financial services, and legal workflows.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/anvil/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- PDF
- PDF Filling
- PDF Generation
- E-Signatures
- Document Automation
- OCR
- Document AI
- GraphQL
- REST
- Workflows
- Web Forms
- Paperwork Automation
apis:
- aid: anvil:pdf-filling-api
  name: Anvil PDF Filling API
  description: Fill existing PDF templates with JSON data. Send structured data to a PDF template and receive a filled PDF
    document. Supports text, checkboxes, signatures, and other form fields. Returns a binary PDF stream.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.useanvil.com/products/pdf-filling-api/
  baseURL: https://app.useanvil.com
  tags:
  - PDF
  - PDF Filling
  - REST
  properties:
  - type: Documentation
    url: https://www.useanvil.com/docs/api/fill-pdf/
  - type: OpenAPI
    url: openapi/anvil-pdf-filling-api-openapi.yml
  - url: graphql/anvil-graphql.md
    type: GraphQL
- aid: anvil:pdf-generation-api
  name: Anvil PDF Generation API
  description: Generate new PDFs dynamically from HTML/CSS, structured Markdown, or Anvil's JSON-based layout definition.
    POST your content to /api/v1/generate-pdf and receive a binary PDF stream in return.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.useanvil.com/docs/api/generate-pdf/
  baseURL: https://app.useanvil.com
  tags:
  - PDF
  - PDF Generation
  - HTML to PDF
  - REST
  properties:
  - type: Documentation
    url: https://www.useanvil.com/docs/api/generate-pdf/
  - type: OpenAPI
    url: openapi/anvil-pdf-generation-api-openapi.yml
- aid: anvil:etch-esign-api
  name: Anvil Etch E-Sign API
  description: Embed white-labeled e-signature collection into applications. Create e-sign packets, route documents to multiple
    signers, and receive webhook notifications on completion. Supports interactive, progressive, and unordered signing flows
    (higher-tier plans).
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.useanvil.com/docs/api/e-signatures/
  baseURL: https://app.useanvil.com/graphql
  tags:
  - E-Signatures
  - GraphQL
  - Etch
  properties:
  - type: Documentation
    url: https://www.useanvil.com/docs/api/e-signatures/
  - type: GraphQLReference
    url: https://www.useanvil.com/docs/api/graphql/reference/
- aid: anvil:graphql-api
  name: Anvil GraphQL API
  description: The primary query and mutation interface for Anvil. Covers e-sign packets, workflows, PDF operations, webforms,
    and document AI. The complete schema is downloadable via GET https://app.useanvil.com/graphql/sdl.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.useanvil.com/docs/api/graphql/
  baseURL: https://app.useanvil.com/graphql
  tags:
  - GraphQL
  - E-Signatures
  - PDF
  - Workflows
  properties:
  - type: Documentation
    url: https://www.useanvil.com/docs/api/graphql/
  - type: GraphQLReference
    url: https://www.useanvil.com/docs/api/graphql/reference/
  - type: GraphQLSchema
    url: https://app.useanvil.com/graphql/sdl
- aid: anvil:document-ai-api
  name: Anvil Document AI & OCR API
  description: Extract structured data from uploaded PDF documents using AI-powered OCR, automatic field detection, box finding,
    and schema mapping. Accelerates workflow building by inferring field structure from existing documents.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.useanvil.com/docs/api/document-ai/
  baseURL: https://app.useanvil.com
  tags:
  - OCR
  - Document AI
  - Data Extraction
  - GraphQL
  properties:
  - type: Documentation
    url: https://www.useanvil.com/docs/api/document-ai/
- aid: anvil:webhooks
  name: Anvil Webhooks
  description: Event-driven notifications for Anvil workflow events. Receive HTTP POST callbacks when e-sign packets are completed,
    web forms are submitted, workflow steps are finished, and more. Configurable per organization.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.useanvil.com/docs/api/webhooks/
  baseURL: https://app.useanvil.com
  tags:
  - Webhooks
  - Events
  - E-Signatures
  - Workflows
  properties:
  - type: Documentation
    url: https://www.useanvil.com/docs/api/webhooks/
common:
- type: Website
  url: https://www.useanvil.com/
- type: Documentation
  url: https://www.useanvil.com/docs/
- type: GettingStarted
  url: https://www.useanvil.com/docs/api/getting-started/
- type: GitHubOrg
  url: https://github.com/anvilco
- type: Blog
  url: https://www.useanvil.com/blog/
- type: EngineeringBlog
  url: https://www.useanvil.com/blog/engineering/
- type: Pricing
  url: https://www.useanvil.com/pricing/
- type: StatusPage
  url: https://status.useanvil.com/
- type: LinkedIn
  url: https://www.linkedin.com/company/anvil-foundry
- type: X
  url: https://x.com/useanvil
- type: OpenSource
  url: https://www.useanvil.com/open-source/
- type: Postman
  url: https://www.postman.com/anvilco
- type: SDKNodeJS
  url: https://github.com/anvilco/node-anvil
- type: SDKPython
  url: https://github.com/anvilco/python-anvil
- type: SDKCSharp
  url: https://github.com/anvilco/dotnet-anvil
- type: SDKReact
  url: https://github.com/anvilco/react-ui
- type: GraphQLReference
  url: https://www.useanvil.com/docs/api/graphql/reference/
- type: Plans
  url: plans/anvil-plans-pricing.yml
- type: RateLimits
  url: rate-limits/anvil-rate-limits.yml
- type: FinOps
  url: finops/anvil-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com