Paper Instruments

Paper Instruments provides frontier open‑source AI models for knowledge work, spanning finance, consulting, law, and operations. Their platform offers model libraries, Python SDKs, and tools that enable professionals to automate analysis, generate reports, and streamline decision‑making across multiple domains.

Paper Instruments is listed with 2 APIs on the APIs.io network. Tagged areas include AI, Open-Source, Finance, Consulting, and Law.

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

Paper Instruments’ developer surface includes getting-started guide, documentation, API reference, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.2/100 thin Agent 17/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 APIs

AIOpen-SourceFinance Consulting Law

Kin Score

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

Composite quality — 27.2/100 · thin

Contract Quality 5.5 / 21

Developer Ergonomics 5.3 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.6 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 2.6 / 15

Agent readiness — 17/100 · agent aware

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 0 / 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 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
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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 26.0 — up to +18.5 composite points
Access Clarity scores 21.1 — up to +15.8 composite points
Developer Ergonomics scores 31.0 — up to +13.8 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/paper-instruments/apis.yml: open an issue on github.com/api-evangelist/paper-instruments 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.

Compliance GraphQL API

GraphQL API for the compliance portal, providing access to audits, documents, subprocessor data, and related compliance information.

Paper Instruments API

Paper Instruments API as documented publicly: 8 operations. Contract generated from the documentation by API Evangelist (2026-10-29); not the provider's own document.

Semantic Vocabularies 1

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

Paper Instruments Context

8 classes · 52 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Paper Instruments API Rules

12 rules · 10 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

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

GetV1UsageResponse

2 properties

JSON SCHEMA

PostV1ChatCompletionsRequest

25 properties

JSON SCHEMA

PostV1MessagesRequest

15 properties

JSON SCHEMA

PostV1MessagesResponse

3 properties

JSON SCHEMA

PostV1ResponsesRequest

17 properties

JSON SCHEMA

PostV1ResponsesResponse

5 properties

JSON SCHEMA

Security Posture 1

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

Paper Instruments Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: paper-instruments
name: Paper Instruments
image: https://www.paperinstruments.com/favicon.svg
description: Paper Instruments provides frontier open‑source AI models for knowledge work, spanning finance, consulting, law,
  and operations. Their platform offers model libraries, Python SDKs, and tools that enable professionals to automate analysis,
  generate reports, and streamline decision‑making across multiple domains.
url: https://artifacts.apis.io/paper-instruments/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-29'
tags:
- AI
- Open-Source
- Finance
- Consulting
- Law
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/paper-instruments-rules.yml
- type: JSONLD
  url: json-ld/paper-instruments-context.jsonld
- type: Vocabulary
  url: vocabulary/paper-instruments-vocabulary.yml
- type: DataModel
  url: data-model/paper-instruments-data-model.yml
- type: Conformance
  url: conformance/paper-instruments-conformance.yml
- type: LLMsTxt
  url: llms/paper-instruments-llms.txt
- type: Hosts
  url: hosts/paper-instruments-hosts.yml
- type: Vendors
  url: vendors/paper-instruments-vendors.yml
- type: GettingStarted
  url: https://docs.paperinstruments.com/docs/ultramarine
- type: DomainSecurity
  url: security/paper-instruments-domain-security.yml
- type: Website
  url: https://paperinstruments.com
- type: Documentation
  url: https://docs.paperinstruments.com/
- type: APIReference
  url: https://docs.paperinstruments.com/
- type: Blog
  url: https://www.paperinstruments.com/blog
- type: TermsOfService
  url: https://www.paperinstruments.com/terms
- type: PrivacyPolicy
  url: https://www.paperinstruments.com/privacy
- type: GitHubOrganization
  url: https://github.com/paper-instruments
apis:
- aid: paper-instruments:compliance-graphql
  name: Compliance GraphQL API
  description: GraphQL API for the compliance portal, providing access to audits, documents, subprocessor data, and related
    compliance information.
  humanURL: https://compliance.paperinstruments.com
  baseURL: https://compliance.paperinstruments.com/graphql
  properties:
  - type: GraphQL
    url: graphql/compliance-paperinstruments-graphql.json
- aid: paper-instruments:paper-instruments-api
  name: Paper Instruments API
  description: 'Paper Instruments API as documented publicly: 8 operations. Contract generated from the documentation by API
    Evangelist (2026-10-29);

    not the provider''s own document.'
  humanURL: https://docs.paperinstruments.com/docs/ultramarine
  baseURL: https://api.paperinstruments.com
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/paper-instruments-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/paper-instruments-post-v1-chat-completions-request-schema.json
  - type: JSONSchema
    url: json-schema/paper-instruments-post-v1-responses-request-schema.json
  - type: JSONSchema
    url: json-schema/paper-instruments-post-v1-messages-request-schema.json
  - type: JSONSchema
    url: json-schema/paper-instruments-post-v1-responses-response-schema.json
  - type: JSONSchema
    url: json-schema/paper-instruments-post-v1-messages-response-schema.json
  - type: JSONSchema
    url: json-schema/paper-instruments-get-v1-usage-response-schema.json
x-backed-by:
- true-ventures
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 23
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Paper Instruments API — frequently asked questions

Does Paper Instruments have an API?

Yes. APIs.io lists 2 APIs from Paper Instruments, including Compliance GraphQL API and Paper Instruments API.

Is there an OpenAPI specification for the Paper Instruments API?

Yes. APIs.io indexes 1 OpenAPI specification for Paper Instruments, each linked for download from this page.

How do I authenticate with the Paper Instruments API?

Paper Instruments uses bearer-token authentication.

Is the Paper Instruments API ready for AI agents?

Paper Instruments has a Kin Score of 27.2 out of 100 (thin) and an Agent Readiness score of 17.3 (agent-aware), scored by API Evangelist on 2026-10-31.

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