Bullet website screenshot

Bullet

Bullet is Solana's high-performance trading layer — a decentralized exchange offering perpetual futures (derivatives), spot, and lending under one unified margin engine. The Bullet Trading API is a Binance USD-M Futures (FAPI) compatible REST and WebSocket interface for market data, account and position management, and order placement via ed25519-signed transactions, with official Rust and WASM/TypeScript SDKs. Bullet runs as a sovereign rollup settling to Solana mainnet-beta, with a testnet environment for building and testing against mock assets.

Bullet publishes 9 APIs on the APIs.io network, including Account API, Address API, Health API, and 6 more. Tagged areas include Company, DeFi, Solana, Cryptocurrency, and Derivatives.

Bullet’s developer surface includes documentation, API reference, getting-started guide, authentication, sandbox, support, pricing, and 26 more developer resources.

🌐 Visit website 📡 Source on GitHub
50.7/100 developing ▬ flat Agent 69/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
9 APIs 1 MCP Servers
CompanyDeFiSolanaCryptocurrencyDerivativesExchangeTradingPerpetualsLendingBlockchain

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 50.7/100 · developing
Contract Quality 12.8 / 25
Developer Ergonomics 15.7 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 69/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 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 4 / 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/bullet: 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 9

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

Bullet Account API

The Account API from Bullet — 8 operation(s) for account.

Bullet Address API

The Address API from Bullet — 1 operation(s) for address.

Bullet Health API

The Health API from Bullet — 4 operation(s) for health.

Bullet Market-Data API

The Market-Data API from Bullet — 11 operation(s) for market-data.

Bullet Rollup API

The Rollup API from Bullet — 3 operation(s) for rollup.

Bullet SolanaOffchainTx API

The SolanaOffchainTx API from Bullet — 1 operation(s) for solanaoffchaintx.

Bullet Trading API

The Trading API from Bullet — 2 operation(s) for trading.

Bullet Tx API

The Tx API from Bullet — 1 operation(s) for tx.

Bullet User Data (Beta) API

The User Data (Beta) API from Bullet — 6 operation(s) for user data (beta).

Scroll for all 9

Arazzo Workflows 2

Multi-step API workflows described with the Arazzo specification.

_Index

ARAZZO

Bullet market-data snapshot

Discover markets then pull the order book, 24h ticker, and recent trades for a symbol.

ARAZZO

MCP Servers 1

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

bullet-mcp.yml

MCP SERVER

Security Posture 2

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

Bullet Authentication

signature · 1 scheme

SECURITY

Bullet Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Bullet Agentic Access

37 operations · 3 acting

37 operations · 3 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 Sandbox
Sandbox
 SignUp
SignUp

Documentation 3

Reference material describing how the API behaves

OpenAPI
OpenAPI
 Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill
 WellKnown
WellKnown
 AgenticAccess
AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel
 Arazzo
Arazzo

Build 3

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs
 GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 3

Status, limits, changes, and where to get help

StatusPage
StatusPage
 Support
Support
 Discord
Discord

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Website
Website

Other 3

Properties that don't map to a standard resource type

Overlay
Overlay
 X
X
 Telegram
Telegram

Source (apis.yml)

apis.yml Raw ↑ 
aid: bullet
name: Bullet
description: Bullet is Solana's high-performance trading layer — a decentralized exchange offering perpetual futures (derivatives),
  spot, and lending under one unified margin engine. The Bullet Trading API is a Binance USD-M Futures (FAPI) compatible REST
  and WebSocket interface for market data, account and position management, and order placement via ed25519-signed transactions,
  with official Rust and WASM/TypeScript SDKs. Bullet runs as a sovereign rollup settling to Solana mainnet-beta, with a testnet
  environment for building and testing against mock assets.
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://tradingapi.bullet.xyz/docs/favicon-de23e50b.svg
url: https://raw.githubusercontent.com/api-evangelist/bullet/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- electric-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- DeFi
- Solana
- Cryptocurrency
- Derivatives
- Exchange
- Trading
- Perpetuals
- Lending
- Blockchain
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: bullet:bullet-account-api
  name: Bullet Account API
  description: The Account API from Bullet — 8 operation(s) for account.
  humanURL: https://tradingapi.bullet.xyz/docs/
  baseURL: https://tradingapi.bullet.xyz
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/bullet-account-api-openapi.yml
  - type: Documentation
    url: https://tradingapi.bullet.xyz/docs/
  - type: WebSocket
    url: https://tradingapi.bullet.xyz/docs/ws/
- aid: bullet:bullet-address-api
  name: Bullet Address API
  description: The Address API from Bullet — 1 operation(s) for address.
  humanURL: https://tradingapi.bullet.xyz/docs/
  baseURL: https://tradingapi.bullet.xyz
  tags:
  - Address
  properties:
  - type: OpenAPI
    url: openapi/bullet-address-api-openapi.yml
  - type: Documentation
    url: https://tradingapi.bullet.xyz/docs/
  - type: WebSocket
    url: https://tradingapi.bullet.xyz/docs/ws/
- aid: bullet:bullet-health-api
  name: Bullet Health API
  description: The Health API from Bullet — 4 operation(s) for health.
  humanURL: https://tradingapi.bullet.xyz/docs/
  baseURL: https://tradingapi.bullet.xyz
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/bullet-health-api-openapi.yml
  - type: Documentation
    url: https://tradingapi.bullet.xyz/docs/
  - type: WebSocket
    url: https://tradingapi.bullet.xyz/docs/ws/
- aid: bullet:bullet-market-data-api
  name: Bullet Market-Data API
  description: The Market-Data API from Bullet — 11 operation(s) for market-data.
  humanURL: https://tradingapi.bullet.xyz/docs/
  baseURL: https://tradingapi.bullet.xyz
  tags:
  - Market-Data
  properties:
  - type: OpenAPI
    url: openapi/bullet-market-data-api-openapi.yml
  - type: Documentation
    url: https://tradingapi.bullet.xyz/docs/
  - type: WebSocket
    url: https://tradingapi.bullet.xyz/docs/ws/
- aid: bullet:bullet-rollup-api
  name: Bullet Rollup API
  description: The Rollup API from Bullet — 3 operation(s) for rollup.
  humanURL: https://tradingapi.bullet.xyz/docs/
  baseURL: https://tradingapi.bullet.xyz
  tags:
  - Rollup
  properties:
  - type: OpenAPI
    url: openapi/bullet-rollup-api-openapi.yml
  - type: Documentation
    url: https://tradingapi.bullet.xyz/docs/
  - type: WebSocket
    url: https://tradingapi.bullet.xyz/docs/ws/
- aid: bullet:bullet-solanaoffchaintx-api
  name: Bullet SolanaOffchainTx API
  description: The SolanaOffchainTx API from Bullet — 1 operation(s) for solanaoffchaintx.
  humanURL: https://tradingapi.bullet.xyz/docs/
  baseURL: https://tradingapi.bullet.xyz
  tags:
  - SolanaOffchainTx
  properties:
  - type: OpenAPI
    url: openapi/bullet-solanaoffchaintx-api-openapi.yml
  - type: Documentation
    url: https://tradingapi.bullet.xyz/docs/
  - type: WebSocket
    url: https://tradingapi.bullet.xyz/docs/ws/
- aid: bullet:bullet-trading-api
  name: Bullet Trading API
  description: The Trading API from Bullet — 2 operation(s) for trading.
  humanURL: https://tradingapi.bullet.xyz/docs/
  baseURL: https://tradingapi.bullet.xyz
  tags:
  - Trading
  properties:
  - type: OpenAPI
    url: openapi/bullet-trading-api-openapi.yml
  - type: Documentation
    url: https://tradingapi.bullet.xyz/docs/
  - type: WebSocket
    url: https://tradingapi.bullet.xyz/docs/ws/
- aid: bullet:bullet-tx-api
  name: Bullet Tx API
  description: The Tx API from Bullet — 1 operation(s) for tx.
  humanURL: https://tradingapi.bullet.xyz/docs/
  baseURL: https://tradingapi.bullet.xyz
  tags:
  - Tx
  properties:
  - type: OpenAPI
    url: openapi/bullet-tx-api-openapi.yml
  - type: Documentation
    url: https://tradingapi.bullet.xyz/docs/
  - type: WebSocket
    url: https://tradingapi.bullet.xyz/docs/ws/
- aid: bullet:bullet-user-data-beta-api
  name: Bullet User Data (Beta) API
  description: The User Data (Beta) API from Bullet — 6 operation(s) for user data (beta).
  humanURL: https://tradingapi.bullet.xyz/docs/
  baseURL: https://tradingapi.bullet.xyz
  tags:
  - User Data (Beta)
  properties:
  - type: OpenAPI
    url: openapi/bullet-user-data-beta-api-openapi.yml
  - type: Documentation
    url: https://tradingapi.bullet.xyz/docs/
  - type: WebSocket
    url: https://tradingapi.bullet.xyz/docs/ws/
common:
- type: OpenAPI
  url: openapi/bullet-trading-api-openapi.json
- type: DeveloperPortal
  url: https://docs.bullet.xyz/
- type: Documentation
  url: https://docs.bullet.xyz/
- type: APIReference
  url: https://tradingapi.bullet.xyz/docs/
- type: GettingStarted
  url: https://tradingapi.bullet.xyz/docs/getting-started.html
- type: Authentication
  url: authentication/bullet-authentication.yml
- type: Packages
  url: packages/bullet-packages.yml
- type: SDKs
  url: packages/bullet-packages.yml
- type: Sandbox
  url: sandbox/bullet-sandbox.yml
- type: Conventions
  url: conventions/bullet-conventions.yml
- type: ErrorCatalog
  url: errors/bullet-problem-types.yml
- type: Lifecycle
  url: lifecycle/bullet-lifecycle.yml
- type: StatusPage
  url: https://status.bullet.xyz/
- type: Conformance
  url: conformance/bullet-conformance.yml
- type: DataModel
  url: data-model/bullet-data-model.yml
- type: MCPServer
  url: mcp/bullet-mcp.yml
- type: LLMsTxt
  url: llms/bullet-llms.txt
- type: Overlay
  url: overlays/bullet-trading-api-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
- type: Arazzo
  name: Bullet market-data snapshot
  url: arazzo/bullet-market-data-snapshot.yml
- type: WellKnown
  url: well-known/bullet-well-known.yml
- type: DomainSecurity
  url: security/bullet-domain-security.yml
- type: AgenticAccess
  url: agentic-access/bullet-agentic-access.yml
- type: GitHubOrganization
  url: https://github.com/bulletxyz
- type: Support
  url: https://docs.bullet.xyz/exchange/help-center/contact-support.md
- type: Pricing
  url: https://docs.bullet.xyz/exchange/trading/fees.md
- type: SignUp
  url: https://app.bullet.xyz/
- type: TermsOfService
  url: https://docs.bullet.xyz/legals/terms-and-conditions
- type: PrivacyPolicy
  url: https://docs.bullet.xyz/legals/privacy-policy
- type: Website
  url: https://www.bullet.xyz/
- type: X
  url: https://x.com/bulletxyz
- type: Discord
  url: https://discord.com/invite/QuP3YsRAtx
- type: Telegram
  url: https://t.me/bullet_xyz
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence