Packback

Packback is an AI-powered instructional platform for higher education and K-12 that delivers real-time, formative feedback on student discussion and writing. Its products - Questions/Discussions, Writing and Deep Dives, and Originality - embed into a school's LMS through the IMS Global LTI standard rather than a public REST API.

Packback publishes 3 API contracts indexed on the APIs.io network: Questions / Discussions, Writing / Deep Dives, and LTI Integration. Tagged areas include Education, EdTech, Artificial Intelligence, Discussions, and Writing Feedback.

Packback’s developer surface includes documentation, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

16.8/100 emerging ▬ flat Agent 14/100 agent aware Front door AI 6/6 dominant Heartbeat 50/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract

Education EdTech Artificial Intelligence DiscussionsWriting FeedbackLTI LMS

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 16.8/100 · emerging

Contract Quality 6.8 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 1.3 / 17

Operational Transparency 0.9 / 11

Contract Governance 0.0 / 10

Discoverability 4.9 / 9

Regulatory Posture 0.8 / 15

Agent readiness — 14/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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 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

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Education & Research 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

11 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 11.9 — up to +17.6 composite points
Contract Quality scores 32.1 — up to +17.0 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/packback/apis.yml: open an issue on github.com/api-evangelist/packback 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 →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

LTI

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

APIs 3

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

Packback Questions / Discussions

Inquiry-based student discussion product with built-in AI coaching that helps students ask better questions and write stronger responses, plus automated moderation for instructo...

Packback Writing / Deep Dives

Long-form writing and essay product (Writing, Deep Dives, Writing Lab) that gives students instant AI feedback on flow, structure, grammar, research quality, and formatting, wit...

Packback LTI Integration

Packback's integration surface is the IMS Global LTI standard (1EdTech certified for LTI 1.0, 1.2, and 1.3 / LTI Advantage), providing single sign-on, deep linking, and gradeboo...

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Packback API

OPEN COLLECTION

Packback API pricing

Not yet checked against Packback's own pricing page. Compiled by API Evangelist on 2026-06-21 from packback.co/; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Per-Student / Course Access subscription	—
Institutional / Site License enterprise	—
Open-Source LTI 1.3 PHP Library free	—

Plan details, limits and sources →

Rate limits

Public REST API Limits: not applicable - no public REST API requests
LTI Advantage Service Calls (AGS / NRPS): governed by the LMS and platform, not publicly documented requests

Compiled by API Evangelist, not yet checked against Packback's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Packback Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Packback Rate Limits

2 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Packback Finops

FINOPS

Security Posture 1

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

Packback Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: packback
url: https://raw.githubusercontent.com/api-evangelist/packback/refs/heads/main/apis.yml
name: Packback
kind: company
description: Packback is an AI-powered instructional platform for higher education and K-12 that delivers real-time, formative
  feedback on student discussion and writing. Its products - Questions/Discussions, Writing and Deep Dives, and Originality
  - embed into a school's LMS through the IMS Global LTI standard rather than a public REST API.
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - packbackbooks/lti-1-3-php-library
  open_source: unknown
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/packback.png
tags:
- Education
- EdTech
- Artificial Intelligence
- Discussions
- Writing Feedback
- LTI
- LMS
tags_raw:
- Education
- EdTech
- AI
- Discussion
- Writing Feedback
- LTI
- LMS
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.23'
apis:
- aid: packback:questions-discussions
  name: Packback Questions / Discussions
  tags:
  - Discussions
  - Inquiry
  - AI Coaching
  - Education
  tags_raw:
  - Discussion
  - Inquiry
  - AI Coaching
  - Education
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://packback.co/product/lti/
  properties:
  - url: https://packback.co/platform/
    type: Documentation
  - url: openapi/_original/packback-openapi.yml
    type: OpenAPI
  description: Inquiry-based student discussion product with built-in AI coaching that helps students ask better questions
    and write stronger responses, plus automated moderation for instructors. Accessed by students and instructors inside the
    LMS via LTI; no public REST API is published.
- aid: packback:writing-deep-dives
  name: Packback Writing / Deep Dives
  tags:
  - Writing Feedback
  - Essays
  - AI Coaching
  - Grading
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://packback.co/product/deep-dives/
  properties:
  - url: https://packback.co/platform/
    type: Documentation
  - url: openapi/_original/packback-openapi.yml
    type: OpenAPI
  description: Long-form writing and essay product (Writing, Deep Dives, Writing Lab) that gives students instant AI feedback
    on flow, structure, grammar, research quality, and formatting, with rubric-aligned AI-assisted grading for instructors.
    Delivered through the LMS via LTI; no public REST API is published.
- aid: packback:lti-integration
  name: Packback LTI Integration
  tags:
  - LTI
  - LMS
  - SSO
  - Gradebook Sync
  - Interoperability
  tags_raw:
  - LTI
  - LMS
  - Single Sign-On
  - Gradebook Sync
  - Interoperability
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://packback.co/lti-integration/
  properties:
  - url: https://packback.co/lti-integration/
    type: Documentation
  - url: https://github.com/packbackbooks/lti-1-3-php-library
    type: GitHub
  - url: openapi/_original/packback-openapi.yml
    type: OpenAPI
  description: Packback's integration surface is the IMS Global LTI standard (1EdTech certified for LTI 1.0, 1.2, and 1.3
    / LTI Advantage), providing single sign-on, deep linking, and gradebook/grade passback sync across Canvas, Blackboard,
    Brightspace, Moodle, Schoology, Google Classroom, ClassLink, Clever, and other IMS-compliant LMSs. Packback also maintains
    an open-source LTI 1.3 PHP tool-provider library.
common:
- type: DomainSecurity
  url: security/packback-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/packbackbooks
- type: LinkedIn
  url: https://www.linkedin.com/company/packback
- type: Website
  url: https://packback.co
- type: Documentation
  url: https://help.packback.co
- type: Plans
  url: plans/packback-plans-pricing.yml
- type: RateLimits
  url: rate-limits/packback-rate-limits.yml
- type: FinOps
  url: finops/packback-finops.yml
- url: https://packback.co/feed/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Packback API — frequently asked questions

Does Packback have an API?

Yes. APIs.io lists 3 APIs from Packback, including Packback Questions / Discussions, Packback Writing / Deep Dives and Packback LTI Integration.

Is there an OpenAPI specification for the Packback API?

Yes. APIs.io indexes 3 OpenAPI specifications for Packback, each linked for download from this page.

How much does the Packback API cost?

APIs.io lists 3 pricing plans for Packback, with each plan's price, limits and inclusions under Pricing on this page.

Is the Packback API ready for AI agents?

Packback has a Kin Score of 16.8 out of 100 (emerging) and an Agent Readiness score of 13.6 (agent-aware), scored by API Evangelist on 2026-11-06.

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