generated: '2026-07-19'
method: searched
source: https://docs.injective.network/developers-native/query-chain + query-indexer
summary:
  types: [none-public, signature-based-transactions]
  api_key_in: []
  oauth2_flows: []
description: >-
  Injective's public read APIs (Chain LCD/REST, Tendermint RPC, and the Indexer
  gRPC/gRPC-web/REST + Chain Stream WebSocket) are open, permissionless endpoints
  that require no API key or OAuth token — they are rate-limited public
  infrastructure. WRITE access is not key-based: state changes are performed by
  broadcasting cryptographically signed transactions. Signing uses either native
  Cosmos secp256k1 (bech32 inj1... accounts) or Ethereum EIP-712 typed-data signing
  (0x... keys), with optional AuthZ grant delegation for session-based auto-signing.
schemes:
- name: public-read
  type: none
  applies_to: [Chain LCD/REST, Tendermint RPC, Indexer gRPC/REST, Chain Stream WS]
  note: no credential required; rate-limited public sentry endpoints
- name: cosmos-signature
  type: transaction-signature
  scheme: secp256k1 (Cosmos), bech32 address inj1...
  applies_to: [transaction broadcast]
- name: eip712-signature
  type: transaction-signature
  scheme: EIP-712 typed data, EVM address 0x...
  applies_to: [transaction broadcast, Injective EVM]
- name: authz-delegation
  type: on-chain-grant
  scheme: Cosmos AuthZ MsgGrant for session-based/auto signing
  docs: https://github.com/InjectiveLabs/agent-skills (injective-trading-autosign)