Spacemesh

Spacemesh is a permissionless, self-mining proof-of-space-time (PoST) layer-1 blockchain built to run on ordinary home computers using unused disk space rather than specialized hardware or large capital stake. Its full-node software (go-spacemesh) exposes a gRPC API with a grpc-gateway REST/JSON facade for reading chain state — accounts, transactions, layers, rewards and activations (ATXs) — and for submitting transactions. Surfaced as a Paradigm portfolio company; the protocol, node, API design and developer tooling remain open source under the spacemeshos GitHub org, though the company's spacemesh.io / spacemesh.network web and hosted-API domains are now parked and the last node release was April 2025 (project appears dormant).

Spacemesh publishes 8 APIs on the APIs.io network, including AccountService API, ActivationService API, LayerService API, and 5 more. Tagged areas include Company, Crypto Infrastructure, Blockchain, Cryptocurrency, and Proof of Space-Time.

Spacemesh’s developer surface includes documentation, API reference, CLI, changelog, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
30.9/100 thin ▬ flat Agent 56/100 agent ready Full breakdown ↓
scored 2026-07-27 · rubric v0.5
8 APIs 1 MCP Servers
CompanyCrypto InfrastructureBlockchainCryptocurrencyProof of Space-TimeLayer 1gRPCNode APIOpen Source

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 30.9/100 · thin
Contract Quality 9.4 / 25
Developer Ergonomics 8.7 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 56/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 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/spacemesh: 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 8

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

Spacemesh AccountService API

The AccountService API from Spacemesh — 2 operation(s) for accountservice.

Spacemesh ActivationService API

The ActivationService API from Spacemesh — 6 operation(s) for activationservice.

Spacemesh LayerService API

The LayerService API from Spacemesh — 2 operation(s) for layerservice.

Spacemesh MalfeasanceService API

The MalfeasanceService API from Spacemesh — 2 operation(s) for malfeasanceservice.

Spacemesh NetworkService API

The NetworkService API from Spacemesh — 2 operation(s) for networkservice.

Spacemesh NodeService API

The NodeService API from Spacemesh — 2 operation(s) for nodeservice.

Spacemesh RewardService API

The RewardService API from Spacemesh — 2 operation(s) for rewardservice.

Spacemesh TransactionService API

The TransactionService API from Spacemesh — 8 operation(s) for transactionservice.

Scroll for all 8

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

spacemesh-mcp.yml

MCP SERVER

Security Posture 1

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

Spacemesh Domain Security

TLSv1.3

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Spacemesh Agentic Access

26 operations · 16 acting

26 operations · 16 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 AgentSkill
AgentSkill
 LLMsTxt
LLMsTxt
 AgenticAccess
AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance
 Lifecycle
Lifecycle
 DataModel
DataModel

Build 5

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 SourceCode
SourceCode
 Packages
Packages
 SDKs
SDKs
 CLI
CLI

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ChangeLog
ChangeLog

Company 1

The organization behind the API

Website
Website

Other 1

Properties that don't map to a standard resource type

Protobuf
Protobuf

Source (apis.yml)

apis.yml Raw ↑ 
aid: spacemesh
name: Spacemesh
description: Spacemesh is a permissionless, self-mining proof-of-space-time (PoST) layer-1 blockchain built to run on ordinary
  home computers using unused disk space rather than specialized hardware or large capital stake. Its full-node software (go-spacemesh)
  exposes a gRPC API with a grpc-gateway REST/JSON facade for reading chain state — accounts, transactions, layers, rewards
  and activations (ATXs) — and for submitting transactions. Surfaced as a Paradigm portfolio company; the protocol, node,
  API design and developer tooling remain open source under the spacemeshos GitHub org, though the company's spacemesh.io
  / spacemesh.network web and hosted-API domains are now parked and the last node release was April 2025 (project appears
  dormant).
url: https://raw.githubusercontent.com/api-evangelist/spacemesh/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://github.com/spacemeshos.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- paradigm
x-tier: enriched
x-tier-reason: gRPC + grpc-gateway node API captured from official GitHub org
x-project-status: dormant (web/API domains parked; last node release 2025-04-15)
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Crypto Infrastructure
- Blockchain
- Cryptocurrency
- Proof of Space-Time
- Layer 1
- gRPC
- Node API
- Open Source
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: spacemesh:spacemesh-accountservice-api
  name: Spacemesh AccountService API
  description: The AccountService API from Spacemesh — 2 operation(s) for accountservice.
  humanURL: https://github.com/spacemeshos/api
  baseURL: https://api.spacemesh.network
  tags:
  - AccountService
  properties:
  - type: OpenAPI
    url: openapi/spacemesh-accountservice-api-openapi.yml
  - type: Protobuf
    url: grpc/spacemesh/v2beta1/v2beta1.proto
  - type: Documentation
    url: https://github.com/spacemeshos/api
  - type: Protobuf
    url: grpc/spacemesh/v1/node.proto
- aid: spacemesh:spacemesh-activationservice-api
  name: Spacemesh ActivationService API
  description: The ActivationService API from Spacemesh — 6 operation(s) for activationservice.
  humanURL: https://github.com/spacemeshos/api
  baseURL: https://api.spacemesh.network
  tags:
  - ActivationService
  properties:
  - type: OpenAPI
    url: openapi/spacemesh-activationservice-api-openapi.yml
  - type: Protobuf
    url: grpc/spacemesh/v2beta1/v2beta1.proto
  - type: Documentation
    url: https://github.com/spacemeshos/api
  - type: Protobuf
    url: grpc/spacemesh/v1/node.proto
- aid: spacemesh:spacemesh-layerservice-api
  name: Spacemesh LayerService API
  description: The LayerService API from Spacemesh — 2 operation(s) for layerservice.
  humanURL: https://github.com/spacemeshos/api
  baseURL: https://api.spacemesh.network
  tags:
  - LayerService
  properties:
  - type: OpenAPI
    url: openapi/spacemesh-layerservice-api-openapi.yml
  - type: Protobuf
    url: grpc/spacemesh/v2beta1/v2beta1.proto
  - type: Documentation
    url: https://github.com/spacemeshos/api
  - type: Protobuf
    url: grpc/spacemesh/v1/node.proto
- aid: spacemesh:spacemesh-malfeasanceservice-api
  name: Spacemesh MalfeasanceService API
  description: The MalfeasanceService API from Spacemesh — 2 operation(s) for malfeasanceservice.
  humanURL: https://github.com/spacemeshos/api
  baseURL: https://api.spacemesh.network
  tags:
  - MalfeasanceService
  properties:
  - type: OpenAPI
    url: openapi/spacemesh-malfeasanceservice-api-openapi.yml
  - type: Protobuf
    url: grpc/spacemesh/v2beta1/v2beta1.proto
  - type: Documentation
    url: https://github.com/spacemeshos/api
  - type: Protobuf
    url: grpc/spacemesh/v1/node.proto
- aid: spacemesh:spacemesh-networkservice-api
  name: Spacemesh NetworkService API
  description: The NetworkService API from Spacemesh — 2 operation(s) for networkservice.
  humanURL: https://github.com/spacemeshos/api
  baseURL: https://api.spacemesh.network
  tags:
  - NetworkService
  properties:
  - type: OpenAPI
    url: openapi/spacemesh-networkservice-api-openapi.yml
  - type: Protobuf
    url: grpc/spacemesh/v2beta1/v2beta1.proto
  - type: Documentation
    url: https://github.com/spacemeshos/api
  - type: Protobuf
    url: grpc/spacemesh/v1/node.proto
- aid: spacemesh:spacemesh-nodeservice-api
  name: Spacemesh NodeService API
  description: The NodeService API from Spacemesh — 2 operation(s) for nodeservice.
  humanURL: https://github.com/spacemeshos/api
  baseURL: https://api.spacemesh.network
  tags:
  - NodeService
  properties:
  - type: OpenAPI
    url: openapi/spacemesh-nodeservice-api-openapi.yml
  - type: Protobuf
    url: grpc/spacemesh/v2beta1/v2beta1.proto
  - type: Documentation
    url: https://github.com/spacemeshos/api
  - type: Protobuf
    url: grpc/spacemesh/v1/node.proto
- aid: spacemesh:spacemesh-rewardservice-api
  name: Spacemesh RewardService API
  description: The RewardService API from Spacemesh — 2 operation(s) for rewardservice.
  humanURL: https://github.com/spacemeshos/api
  baseURL: https://api.spacemesh.network
  tags:
  - RewardService
  properties:
  - type: OpenAPI
    url: openapi/spacemesh-rewardservice-api-openapi.yml
  - type: Protobuf
    url: grpc/spacemesh/v2beta1/v2beta1.proto
  - type: Documentation
    url: https://github.com/spacemeshos/api
  - type: Protobuf
    url: grpc/spacemesh/v1/node.proto
- aid: spacemesh:spacemesh-transactionservice-api
  name: Spacemesh TransactionService API
  description: The TransactionService API from Spacemesh — 8 operation(s) for transactionservice.
  humanURL: https://github.com/spacemeshos/api
  baseURL: https://api.spacemesh.network
  tags:
  - TransactionService
  properties:
  - type: OpenAPI
    url: openapi/spacemesh-transactionservice-api-openapi.yml
  - type: Protobuf
    url: grpc/spacemesh/v2beta1/v2beta1.proto
  - type: Documentation
    url: https://github.com/spacemeshos/api
  - type: Protobuf
    url: grpc/spacemesh/v1/node.proto
common:
- type: Website
  url: https://spacemesh.io
- type: GitHubOrganization
  url: https://github.com/spacemeshos
- type: SourceCode
  url: https://github.com/spacemeshos/go-spacemesh
- type: Documentation
  url: https://github.com/spacemeshos/api
- type: APIReference
  url: https://github.com/spacemeshos/api
- type: Protobuf
  url: grpc/spacemesh/v2beta1/v2beta1.proto
- type: Packages
  url: packages/spacemesh-packages.yml
- type: SDKs
  url: packages/spacemesh-packages.yml
- type: CLI
  url: cli/spacemesh-cli.yml
- type: MCPServer
  url: mcp/spacemesh-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/spacemesh-llms.txt
- type: Conventions
  url: conventions/spacemesh-conventions.yml
- type: ErrorCatalog
  url: errors/spacemesh-problem-types.yml
- type: Conformance
  url: conformance/spacemesh-conformance.yml
- type: Lifecycle
  url: lifecycle/spacemesh-lifecycle.yml
- type: ChangeLog
  url: changelog/spacemesh-changelog.yml
- type: DataModel
  url: data-model/spacemesh-data-model.yml
- type: AgenticAccess
  url: agentic-access/spacemesh-agentic-access.yml
- type: DomainSecurity
  url: security/spacemesh-domain-security.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 20
  pass: local-v1