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lighthouse/book/src/http.md
Paul Hauner 251aea645c Make API friendly to block explorers (#702)
* Add validator index to duties response

* Add `get_state` method to beacon chain

* Improve /beacon/validators endpoint

* Add validators/all and validators/active endpoints

* Start refactor of HTTP docs

* Document /beacon/heads endpoint

* Remove some unused API endpoints

* Improve API docs

* Add methods to get all validator duties

* Improve docs

* Remove dead links

* Make tables left-justified

* Add /consensus/vote_count endpoint

* Add /consensus/individual_votes endpoint

* Update formatting

* Tidy

* Add committees endpoint

* Strictly require 0x prefix for serde in BLS

* Update docs to have 0x prefix

* Fix failing tests

* Add unfinished code

* Improve testing, fix bugs

* Tidy, ensure all beacon endpoints smoke tested

* Fix pubkey cache error

* Address comments with docs
2019-12-19 11:45:28 +11:00

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HTTP API

A Lighthouse beacon node can be configured to expose a HTTP server by supplying the --http flag. The default listen address is localhost:5052.

The following CLI flags control the HTTP server:

  • --http: enable the HTTP server (required even if the following flags are provided).
  • --http-port: specify the listen port of the server.
  • --http-address: specify the listen address of the server.

The API is logically divided into several core endpoints, each documented in detail:

Endpoint Description
/beacon General information about the beacon chain.
/validator Provides functionality to validator clients.
/consensus Proof-of-stake voting statistics.
/network Information about the p2p network.

Please note: The OpenAPI format at SwaggerHub: Lighthouse REST API has been deprecated. This documentation is now the source of truth for the REST API.

Troubleshooting

HTTP API is unavailable or refusing connections

Ensure the --http flag has been supplied at the CLI.

You can quickly check that the HTTP endpoint is up using curl:

curl "localhost:5052/beacon/head"

{"slot":37934,"block_root":"0x4d3ae7ebe8c6ef042db05958ec76e8f7be9d412a67a0defa6420a677249afdc7","state_root":"0x1c86b13ffc70a41e410eccce20d33f1fe59d148585ea27c2afb4060f75fe6be2","finalized_slot":37856,"finalized_block_root":"0xbdae152b62acef1e5c332697567d2b89e358628790b8273729096da670b23e86","justified_slot":37888,"justified_block_root":"0x01c2f516a407d8fdda23cad4ed4381e4ab8913d638f935a2fe9bd00d6ced5ec4","previous_justified_slot":37856,"previous_justified_block_root":"0xbdae152b62acef1e5c332697567d2b89e358628790b8273729096da670b23e86"}