Memoir

Memoir, operated by Tachyon Labs, Inc., is an AI-powered marketing automation platform in Y Combinator's Spring 2026 batch, founded in 2026 by Maanav Agrawal and Jason Zhan. It connects to the systems where product work happens — GitHub, Linear and Slack on every plan, plus Jira, Notion, Google Docs, Drive and CRM on higher tiers — and turns shipped product updates into multi-channel marketing content: social posts, blog posts, changelogs, launch pages, ads, demo videos and customer updates generated in the company's brand voice and routed through human approval. The product is organized around "Memory" (Atlas) for building context about a company and "Motion" (market-motion) for producing and distributing content as teams ship features. Published customers include Datost, Smol Machines, TraceRoot and Zatanna. Pricing is published at three tiers — Starter $300/mo, Scale $1,500/mo and a custom Enterprise tier — all sold through a demo conversation rather than self-serve checkout. Memoir is a marketing SaaS product with no developer program: it exposes only a private session- authenticated backend (api.trymemoir.ai answers every path, including /.well-known/*, with HTTP 401 "Not signed in") and publishes no public API, developer portal, API reference, machine-readable specification, SDK, CLI or MCP server.

Memoir is profiled on the APIs.io network. Tagged areas include Company, Marketing, Marketing Automation, Artificial Intelligence, and Content Generation.

Memoir’s developer surface includes pricing, support, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

19.9/100 emerging ▬ flat Agent 0/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessPaid

0 APIs

Company Marketing Marketing Automation Artificial Intelligence Content GenerationDeveloper MarketingSoftware-as-a-Service Y Combinator

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 19.9/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.0 / 20

Access Clarity 13.9 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 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 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

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.

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 github.com/api-evangelist/memoir: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Pricing Plans 1

Published pricing tiers and plan structures.

Memoir Plans Pricing

3 plans

PLANS

Security Posture 1

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

Memoir Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

Plans

TermsOfService

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: memoir
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: sales-gated
  trial: false
  try_now: false
  public: false
  label: Paid · Sales-gated onboarding
  confidence: high
  source:
  - plans
  - website
  generated: '2026-08-13'
  method: derived
  note: Product access model, not an API access model — Memoir publishes no API. All three published tiers (Starter $300/mo,
    Scale $1,500/mo, Enterprise custom) route to a "Book a demo" / "Talk to us" Calendly conversation; the only authenticated
    entry point on the site is /login for existing customers. No free tier, no trial, and no self-serve checkout are published.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/memoir.png
name: Memoir
description: 'Memoir, operated by Tachyon Labs, Inc., is an AI-powered marketing automation platform in Y Combinator''s Spring
  2026 batch, founded in 2026 by Maanav Agrawal and Jason Zhan. It connects to the systems where product work happens — GitHub,
  Linear and Slack on every plan, plus Jira, Notion, Google Docs, Drive and CRM on higher tiers — and turns shipped product
  updates into multi-channel marketing content: social posts, blog posts, changelogs, launch pages, ads, demo videos and customer
  updates generated in the company''s brand voice and routed through human approval. The product is organized around "Memory"
  (Atlas) for building context about a company and "Motion" (market-motion) for producing and distributing content as teams
  ship features. Published customers include Datost, Smol Machines, TraceRoot and Zatanna. Pricing is published at three tiers
  — Starter $300/mo, Scale $1,500/mo and a custom Enterprise tier — all sold through a demo conversation rather than self-serve
  checkout. Memoir is a marketing SaaS product with no developer program: it exposes only a private session- authenticated
  backend (api.trymemoir.ai answers every path, including /.well-known/*, with HTTP 401 "Not signed in") and publishes no
  public API, developer portal, API reference, machine-readable specification, SDK, CLI or MCP server.'
url: https://raw.githubusercontent.com/api-evangelist/memoir/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
tags:
- Company
- Marketing
- Marketing Automation
- Artificial Intelligence
- Content Generation
- Developer Marketing
- Software-as-a-Service
- Y Combinator
tags_raw:
- Company
- Marketing
- Marketing Automation
- Artificial Intelligence
- Content Generation
- Developer Marketing
- SaaS
- Y Combinator
apis: []
x-enrichment:
  date: '2026-08-13'
  status: minimal
  artifacts_added: 3
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: 'Memoir ships an end-user marketing SaaS only — there is no developer surface of any kind: www.trymemoir.ai/developers,
    /docs, /api-docs and /llms.txt all return 404 from the Vercel SPA, and the single backend host api.trymemoir.ai answers
    every path, including /openapi.json, /graphql, /mcp and /.well-known/*, with a blanket HTTP 401 {"detail":"Not signed
    in"}.'
  evidence:
  - url: https://www.trymemoir.ai/developers
    status: 404
  - url: https://www.trymemoir.ai/llms.txt
    status: 404
  - url: https://api.trymemoir.ai/openapi.json
    status: 401
  - url: https://api.trymemoir.ai/.well-known/agent-card.json
    status: 401
  checked: '2026-08-13'
common:
- type: DomainSecurity
  url: security/memoir-domain-security.yml
- type: Website
  url: https://www.trymemoir.ai/
- type: Pricing
  url: https://www.trymemoir.ai/pricing/
- type: Plans
  url: plans/memoir-plans-pricing.yml
- type: LLMsTxt
  url: llms/memoir-llms.txt
- type: Login
  url: https://www.trymemoir.ai/login
- type: TermsOfService
  url: https://www.trymemoir.ai/terms/
- type: PrivacyPolicy
  url: https://www.trymemoir.ai/privacy/
- type: Support
  url: mailto:maanav@trymemoir.ai
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io

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