Merkle Manufactory Inc.

Merkle Manufactory Inc. is the company that builds Farcaster, a sufficiently decentralized social network, and Snapchain, the blockchain-like peer-to-peer network that stores and syncs Farcaster's social data. Its developer surface is open and protocol-based rather than a single hosted product API: Snapchain nodes serve an HTTP API (port 3381, /v1) and a gRPC API (port 3383) for reading casts, reactions, links, user data, verifications and on-chain events and for submitting signed messages; Mini Apps (formerly Frames v2) run inside the Farcaster feed; and Sign In with Farcaster (SIWF) plus AuthKit provide identity for third-party apps. The stack is fully open source under the farcasterxyz GitHub organization. Backed by a16z.

Merkle Manufactory Inc. publishes 1 API on the APIs.io network. Tagged areas include Company, Social, Decentralized Social, Protocol, and Blockchain.

Merkle Manufactory Inc.’s developer surface includes documentation, API reference, getting-started guide, signup flow, support, authentication, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
22.6/100 emerging ▬ flat Agent 18/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5
1 APIs
CompanySocialDecentralized SocialProtocolBlockchainWeb3Developer PlatformFarcaster

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 22.6/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 10.0 / 20
Commercial Clarity 2.6 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 18/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/merkle-manufactory-inc: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

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

Snapchain HTTP API

The read/write REST interface a Snapchain node serves on port 3381 under the /v1 path. Read endpoints (casts, reactions, links, user data, verifications, fids, username proofs, ...

Security Posture 2

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

Merkle Manufactory Inc Authentication

none/signed-message · 2 schemes

SECURITY

Merkle Manufactory Inc Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp

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 2

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Idempotency
Idempotency

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

Support
Support

Other 1

Properties that don't map to a standard resource type

Protobuf
Protobuf

Source (apis.yml)

apis.yml Raw ↑ 
aid: merkle-manufactory-inc
name: Merkle Manufactory Inc.
description: 'Merkle Manufactory Inc. is the company that builds Farcaster, a sufficiently decentralized social network, and
  Snapchain, the blockchain-like peer-to-peer network that stores and syncs Farcaster''s social data. Its developer surface
  is open and protocol-based rather than a single hosted product API: Snapchain nodes serve an HTTP API (port 3381, /v1) and
  a gRPC API (port 3383) for reading casts, reactions, links, user data, verifications and on-chain events and for submitting
  signed messages; Mini Apps (formerly Frames v2) run inside the Farcaster feed; and Sign In with Farcaster (SIWF) plus AuthKit
  provide identity for third-party apps. The stack is fully open source under the farcasterxyz GitHub organization. Backed
  by a16z.'
url: https://raw.githubusercontent.com/api-evangelist/merkle-manufactory-inc/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://docs.farcaster.xyz/og-image.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: profiled
x-tier-reason: enriched
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Social
- Decentralized Social
- Protocol
- Blockchain
- Web3
- Developer Platform
- Farcaster
apis:
- name: Snapchain HTTP API
  description: The read/write REST interface a Snapchain node serves on port 3381 under the /v1 path. Read endpoints (casts,
    reactions, links, user data, verifications, fids, username proofs, storage limits, on-chain events, info, events) are
    unauthenticated; writes are performed by submitting protobuf-encoded, Ed25519-signed Farcaster messages to /v1/submitMessage.
    Snapchain is self-hosted node software (a drop-in replacement for Hubble); the default documented base address is a local
    node.
  humanURL: https://snapchain.farcaster.xyz/reference/httpapi/httpapi
  baseURL: http://127.0.0.1:3381/v1
  tags:
  - Social
  - Decentralized Social
  - Protocol
  properties:
  - type: Documentation
    url: https://snapchain.farcaster.xyz/
  - type: APIReference
    url: https://snapchain.farcaster.xyz/reference/httpapi/httpapi
  - type: GettingStarted
    url: https://snapchain.farcaster.xyz/getting-started
  - type: Protobuf
    url: grpc/merkle-manufactory-inc-rpc.proto
    name: Snapchain gRPC API (rpc.proto)
  - type: Protobuf
    url: grpc/merkle-manufactory-inc-message.proto
    name: Farcaster Message model (message.proto)
common:
- type: DomainSecurity
  url: security/merkle-manufactory-inc-domain-security.yml
- type: DeveloperPortal
  url: https://docs.farcaster.xyz/
- type: Documentation
  url: https://docs.farcaster.xyz/
- type: APIReference
  url: https://snapchain.farcaster.xyz/reference/httpapi/httpapi
- type: GettingStarted
  url: https://snapchain.farcaster.xyz/getting-started
- type: GitHubOrganization
  url: https://github.com/farcasterxyz
- type: SignUp
  url: https://farcaster.xyz/
- type: Support
  url: https://farcaster.xyz/~/channel/fc-devs
- type: Authentication
  url: authentication/merkle-manufactory-inc-authentication.yml
- type: Conventions
  url: conventions/merkle-manufactory-inc-conventions.yml
- type: Idempotency
  url: conventions/merkle-manufactory-inc-conventions.yml
- type: Protobuf
  url: grpc/merkle-manufactory-inc-rpc.proto
  name: Snapchain gRPC API definitions
- type: LLMsTxt
  url: llms/merkle-manufactory-inc-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 12
  pass: local-v1