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Syndica
Syndica
Syndica is a Solana-only infrastructure company building developer infrastructure for Web3. Its production platform provides fault-tolerant, load-balanced Solana JSON-RPC over HTTP and WebSocket from four global regions, plus ChainStream — a real-time JSON-RPC streaming API that consolidates transaction, slot, and block updates from multiple validators using a "fastest wins" strategy with optional cross-validator verification. Syndica also operates a 0%-commission Solana staking validator running Jito-Solana for MEV optimization, publishes Solana protocol research, and develops Sig — an open-source Solana validator client written in Zig — together with companion libraries (rocksdb-zig, lsquic, boringssl-zig, zstd.zig, base58-zig) under the Apache-2.0 license.
Syndica publishes 2 APIs on the APIs.io network: Solana RPC (WebSocket) API and ChainStream API. Tagged areas include Solana, Blockchain, Web3, RPC, and Streaming.
The Syndica catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.
Syndica’s developer surface includes developer portal, documentation, FAQ, support, engineering blog, signup flow, pricing, and 18 more developer resources.
4 APIs
13 Features
7 Use Cases
Solana Blockchain Web3 RPC Streaming Infrastructure Validator Staking
On this page
Kin Score
APIs 4
Features 13
Event Specs 1
Spectral Rules 1
Security Posture 1
Use Cases 7
Integrations 7
Solutions 6
Resources 25
apis.yml
21 Operational Transparency
Composite quality — 34.8/100 · thin
Contract Quality
12.9 / 25
Developer Ergonomics
4.8 / 20
Commercial Clarity
2.1 / 20
Operational Transparency
2.7 / 13
Agent readiness — 22/100 · agent aware
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 10
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
6 / 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
Individual APIs this provider publishes, each with its own machine-readable definition.
Notable capabilities this provider offers.
Solana JSON-RPC over HTTP — fault-tolerant, load-balanced elastic-node architecture
Solana JSON-RPC PubSub over WebSocket — accountSubscribe, programSubscribe, signatureSubscribe, slotSubscribe, blockSubscribe, logsSubscribe, rootSubscribe
ChainStream real-time streaming API — transactionsSubscribe, slotsSubscribe, blocksSubscribe over WebSocket JSON-RPC 2.0 at wss://chainstream.api.syndica.io
ChainStream "fastest wins" multi-validator consolidation for lower latency and no-miss delivery
ChainStream `verified` parameter for cross-validator confirmation at `processed` commitment
Edge gateway routing across four global regions — Northern Virginia, Oregon, London, Singapore
Per-credential (API key) custom rate-limit rules — per-method, per-IP, per-credential
Detailed observability — RPC call logging, performance metrics, usage insights, analytics dashboard
99.99% uptime SLA on production endpoints; billions of RPC requests served monthly
10M free RPC requests per month entry tier; enterprise pricing via Cost Estimator
Open-source Sig validator client written in Zig (Apache-2.0) for read-optimized validator operation
Solana staking validator with 0% commission, MEV optimization via Jito-Solana client
Research arm publishing Solana protocol and consensus research
Scroll for all 13
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Spectral governance rulesets for linting and validating these APIs.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
What developers build with this provider.
Scroll for all 7
Pre-built integrations with other platforms and tools.
Scroll for all 7
Packaged solutions this provider offers.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Build 4
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 5
Status, limits, changes, and where to get help
Commercial 1
Pricing, plans, and the legal terms of use
Company 5
The organization behind the API
Other 3
Properties that don't map to a standard resource type
Source (apis.yml)
aid: syndica
url: https://raw.githubusercontent.com/api-evangelist/syndica-io/refs/heads/main/apis.yml
apis:
- aid: syndica:syndica-solana-rpc-http-api
name: Syndica Solana RPC (HTTP) API
tags:
- Solana
- RPC
- Blockchain
- JSON-RPC
- HTTP
humanURL: https://docs.syndica.io/platform/solana-rpc/overview
baseURL: https://solana-mainnet.api.syndica.io
properties:
- url: https://docs.syndica.io/platform/solana-rpc/overview
type: Documentation
- url: https://docs.syndica.io/platform/getting-started/make-your-first-rpc-call
type: GettingStarted
- url: https://docs.syndica.io/platform/concepts/api-keys
type: Authentication
- url: https://blog.syndica.io/credential-rate-limits-manage-and-secure-your-solana-rpc-endpoints-using-custom-rules/
type: RateLimits
- url: https://github.com/Syndica/solana-rpc-demo
type: SampleCode
description: High-performance Solana JSON-RPC HTTP endpoints served from a fault-tolerant elastic-node architecture across
four global regions (Northern Virginia, Oregon, London, Singapore). Supports the full standard Solana RPC method surface
(getAccountInfo, getBalance, getTransaction, sendTransaction, getProgramAccounts, getSignaturesForAddress, etc.) with
credential-level rate limits, per-method routing rules, and observability (detailed logging, performance metrics, usage
insights).
- aid: syndica:syndica-solana-rpc-websocket-api
name: Syndica Solana RPC (WebSocket) API
tags:
- Solana
- RPC
- Blockchain
- WebSocket
- PubSub
- Streaming
humanURL: https://docs.syndica.io/platform/getting-started/subscribe-to-websocket-events
baseURL: wss://solana-mainnet.api.syndica.io
properties:
- url: https://docs.syndica.io/platform/getting-started/subscribe-to-websocket-events
type: Documentation
- url: https://docs.syndica.io/platform/solana-rpc/websocket/blockSubscribe
type: APIReference
- url: https://docs.syndica.io/platform/concepts/api-keys
type: Authentication
- url: https://raw.githubusercontent.com/api-evangelist/syndica-io/refs/heads/main/asyncapi/syndica-io-asyncapi.yml
type: AsyncAPI
description: Standard Solana RPC PubSub WebSocket service supporting accountSubscribe, programSubscribe, signatureSubscribe,
slotSubscribe, blockSubscribe, logsSubscribe, and rootSubscribe. Provides a drop-in replacement for `wss://api.mainnet-beta.solana.com`
with Syndica's edge routing, validator consolidation, and per-credential rate limits.
- aid: syndica:syndica-chainstream-api
name: Syndica ChainStream API
tags:
- Solana
- ChainStream
- Streaming
- WebSocket
- JSON-RPC
- Real Time
- Blockchain
humanURL: https://docs.syndica.io/platform/chainstream-api/
baseURL: wss://chainstream.api.syndica.io
properties:
- url: https://docs.syndica.io/platform/chainstream-api/
type: Documentation
- url: https://docs.syndica.io/platform/chainstream-api/slot-subscriptions
type: APIReference
- url: https://docs.syndica.io/platform/concepts/api-keys
type: Authentication
- url: https://syndica.io/infrastructure/chainstream
type: ProductPage
- url: https://blog.syndica.io/solana-data-streaming-how-to-power-your-dapp-with-real-time-data/
type: Blog
- url: https://raw.githubusercontent.com/api-evangelist/syndica-io/refs/heads/main/asyncapi/syndica-io-asyncapi.yml
type: AsyncAPI
description: ChainStream is Syndica's real-time Solana data streaming API. It consolidates updates from multiple validators
using a "fastest wins" strategy so the subscriber benefits from the lowest-latency notification across the validator set,
and offers an optional `verified` parameter that delivers only transactions confirmed by multiple validators at `processed`
commitment. ChainStream uses JSON-RPC 2.0 over WebSocket (`wss://chainstream.api.syndica.io/api-key/<API_KEY>`) and supports
`transactionsSubscribe`, `slotsSubscribe`, and encoded `blocksSubscribe` against `solana-mainnet` (devnet coming). Production
users have cut limit-order time-to-fill from 10s to 300ms with it.
- aid: syndica:syndica-sig-validator-rpc-api
name: Syndica Sig Validator RPC API
tags:
- Solana
- Validator
- Sig
- Zig
- Open Source
- RPC
humanURL: https://github.com/Syndica/sig
properties:
- url: https://github.com/Syndica/sig
type: GitHubRepository
- url: https://sig.fun/
type: Documentation
- url: https://syndica.io/open-source/sig
type: ProductPage
- url: https://blog.syndica.io/tag/sig/
type: Blog
- url: https://blog.syndica.io/a-solana-validator-client-explained-everything-you-need-to-know/
type: Blog
description: Sig is Syndica's open-source Solana validator client implemented in Zig, built for performance, modular RPC,
and read-optimized operation. The project exposes a Solana-compatible RPC surface and is being developed in the open under
the Apache-2.0 license, with companion libraries rocksdb-zig, lsquic, boringssl-zig, zstd.zig, and base58-zig in the same
GitHub organization.
name: Syndica
tags:
- Solana
- Blockchain
- Web3
- RPC
- Streaming
- Infrastructure
- Validator
- Staking
kind: contract
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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/syndica-io.png
access: 3rd-Party
common:
- type: DomainSecurity
url: security/syndica-io-domain-security.yml
- url: https://syndica.io
type: Portal
- url: https://syndica.io/enterprise
name: Enterprise Portal
type: Portal
- url: https://docs.syndica.io
type: Documentation
- url: https://docs.syndica.io/platform/staking/overview
name: Stake Docs
type: Documentation
- url: https://docs.syndica.io/platform/faq
type: FAQ
- url: https://docs.syndica.io/platform/support
type: Support
- url: https://status.syndica.io
type: StatusPage
- url: https://blog.syndica.io/
type: Blog
- url: https://syndica.io/research?n=library
name: Research Library
type: Research
- url: https://syndica.io/company/about-us
type: AboutUs
- url: https://syndica.io/company/contact-us
type: ContactUs
- url: https://syndica.io/company/careers
type: Careers
- url: https://syndica.io/enterprise
name: Contact Sales
type: Signup
- url: https://syndica.io/enterprise/calculator
name: Cost Estimator
type: Pricing
- url: https://syndica.io/stake
name: Stake With Syndica
type: ProductPage
- url: https://syndica.io/open-source/sig
name: Sig Validator
type: OpenSource
- url: https://sig.fun/
name: Sig Docs
type: Documentation
- url: https://github.com/Syndica
type: GitHubOrganization
- url: https://github.com/Syndica/sig
name: Sig Validator (Zig)
type: GitHubRepository
- url: https://github.com/Syndica/solana-rpc-demo
name: Solana RPC Demo (Rust)
type: GitHubRepository
- url: https://github.com/Syndica/rocksdb-zig
name: rocksdb-zig
type: GitHubRepository
- url: https://www.linkedin.com/company/syndica-io
type: LinkedIn
- url: https://twitter.com/Syndica_io
type: X-Twitter
- url: mailto:support@syndica.io
name: support@syndica.io
type: Support
- type: Features
data:
- Solana JSON-RPC over HTTP — fault-tolerant, load-balanced elastic-node architecture
- Solana JSON-RPC PubSub over WebSocket — accountSubscribe, programSubscribe, signatureSubscribe, slotSubscribe, blockSubscribe,
logsSubscribe, rootSubscribe
- ChainStream real-time streaming API — transactionsSubscribe, slotsSubscribe, blocksSubscribe over WebSocket JSON-RPC 2.0
at wss://chainstream.api.syndica.io
- ChainStream "fastest wins" multi-validator consolidation for lower latency and no-miss delivery
- ChainStream `verified` parameter for cross-validator confirmation at `processed` commitment
- Edge gateway routing across four global regions — Northern Virginia, Oregon, London, Singapore
- Per-credential (API key) custom rate-limit rules — per-method, per-IP, per-credential
- Detailed observability — RPC call logging, performance metrics, usage insights, analytics dashboard
- 99.99% uptime SLA on production endpoints; billions of RPC requests served monthly
- 10M free RPC requests per month entry tier; enterprise pricing via Cost Estimator
- Open-source Sig validator client written in Zig (Apache-2.0) for read-optimized validator operation
- Solana staking validator with 0% commission, MEV optimization via Jito-Solana client
- Research arm publishing Solana protocol and consensus research
sources:
- https://syndica.io
- https://syndica.io/enterprise
- https://docs.syndica.io/platform/chainstream-api/
- https://docs.syndica.io/platform/solana-rpc/overview
- https://blog.syndica.io/credential-rate-limits-manage-and-secure-your-solana-rpc-endpoints-using-custom-rules/
- https://github.com/Syndica/sig
updated: '2026-05-25'
- type: UseCases
data:
- name: High-frequency Solana trading
description: Power on-chain trading bots, market makers, and liquidation engines with low-latency ChainStream notifications
— production users have cut limit-order time-to-fill from 10s to 300ms.
- name: DEX and DeFi backends
description: Stream account, program, and signature updates for AMMs, perps, and lending protocols without running self-hosted
validator infrastructure.
- name: Wallet and explorer infrastructure
description: Serve high-volume getAccountInfo, getTransaction, and getSignaturesForAddress traffic from Syndica's load-balanced
HTTP RPC fleet.
- name: Indexers and data warehouses
description: Continuously ingest Solana transactions, slots, and blocks via ChainStream into ClickHouse, BigQuery, or
self-hosted Postgres for analytics.
- name: NFT mint and marketplace tooling
description: Subscribe to program-derived account changes for real-time mint, list, sale, and bid detection.
- name: Solana staking
description: Delegate SOL to the Syndica validator (0% commission, Jito-Solana client, MEV optimization) for self-custody
staking rewards.
- name: Solana protocol R&D
description: Build on top of, or contribute to, Sig — Syndica's open-source Zig validator client — and consume its companion
libraries (rocksdb-zig, lsquic, boringssl-zig).
sources:
- https://syndica.io
- https://syndica.io/enterprise
- https://docs.syndica.io/platform/chainstream-api/
- https://syndica.io/stake
updated: '2026-05-25'
- type: Integrations
data:
- name: Solana mainnet-beta
description: Drop-in replacement for `api.mainnet-beta.solana.com` HTTP and WebSocket endpoints.
- name: Solana web3.js
description: Use Syndica's RPC URL directly with `@solana/web3.js` `Connection` and `PublicKey` flows.
- name: solana-cli
description: Configure `solana config set --url https://solana-mainnet.api.syndica.io/api-key/<KEY>` for CLI access.
- name: Anchor framework
description: Point Anchor's provider at a Syndica RPC URL for Solana program development.
- name: Helius / Triton / QuickNode workflows
description: Mix-and-match providers — Syndica positions itself as the Solana-only specialist alongside multi-chain RPC
vendors.
- name: Jito-Solana
description: Syndica's validator runs the Jito-Solana client for MEV-aware block production.
- name: GitHub
description: Open-source Sig validator and companion Zig libraries are developed publicly under the Syndica GitHub organization.
sources:
- https://syndica.io
- https://github.com/Syndica
- https://syndica.io/stake
updated: '2026-05-25'
- type: Solutions
data:
- name: Solana RPC (Shared)
description: Multi-tenant Solana JSON-RPC HTTP and WebSocket endpoints with 10M free monthly requests, credential-level
rate limits, and global edge routing.
- name: ChainStream
description: Premium real-time Solana data streaming API consolidating updates from multiple validators with "fastest
wins" routing and optional cross-validator verification.
- name: Enterprise / Dedicated
description: Custom RPC capacity, dedicated nodes, ChainStream throughput, and SLA — priced via the Cost Estimator and
direct sales.
- name: Staking
description: Delegate SOL to the Syndica validator (0% commission, Jito-Solana, MEV optimization) with full self-custody.
- name: Sig (Open Source)
description: Syndica's open-source Zig Solana validator client, plus companion libraries — free to use and contribute
to.
- name: Research
description: Syndica Research Library — public protocol and consensus research alongside the Research Blog tag.
sources:
- https://syndica.io
- https://syndica.io/enterprise
- https://syndica.io/enterprise/calculator
- https://syndica.io/stake
- https://syndica.io/open-source/sig
- https://syndica.io/research?n=library
updated: '2026-05-25'
created: '2026-05-25T00:00:00.000Z'
modified: '2026-05-25'
position: Consuming
description: Syndica is a Solana-only infrastructure company building developer infrastructure for Web3. Its production platform
provides fault-tolerant, load-balanced Solana JSON-RPC over HTTP and WebSocket from four global regions, plus ChainStream
— a real-time JSON-RPC streaming API that consolidates transaction, slot, and block updates from multiple validators using
a "fastest wins" strategy with optional cross-validator verification. Syndica also operates a 0%-commission Solana staking
validator running Jito-Solana for MEV optimization, publishes Solana protocol research, and develops Sig — an open-source
Solana validator client written in Zig — together with companion libraries (rocksdb-zig, lsquic, boringssl-zig, zstd.zig,
base58-zig) under the Apache-2.0 license.
maintainers:
- FN: Kin Lane
email: info@apievangelist.com
X: apievangelist
url: https://apievangelist.com
specificationVersion: '0.16'