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Neynar Signer API

Operations related to signer

Neynar Signer API is one of 39 APIs that Neynar publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Signer. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a getting-started guide, and rate-limit docs.

This API exposes 8 operations across 7 paths, and defines 14 schemas. It is described by OpenAPI 3.2.0, at version 3.176.0.

Requests are made against a single base URL, https://api.neynar.com.

8 operations 7 paths 14 schemas 4 GET4 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
3.176.0
Base URL
https://api.neynar.com
Authentication
API Key
Contact
Resource Areas
1

Authentication & Security 1

Neynar Signer API declares 1 security scheme for authenticating requests. An API key is passed in the header as x-api-key (ApiKeyAuth). By default, every request must be authenticated.

  • ApiKeyAuth — API key to authorize requests

Paths & Operations 8

Across 7 paths, the API surfaces 8 operations — 4 GET, 4 POST. Each is listed below with its method, path, parameters, and response codes.

Signer 8

Operations related to signer

GET
/v2/farcaster/login/authorize/
Fetch authorization url
fetch-authorization-url 2 params → 200400401
POST
/v2/farcaster/message/
Publish message
publish-message-to-farcaster body → 200400500
GET
/v2/farcaster/signer/
Status
lookup-signer 1 param → 200400403404500
POST
/v2/farcaster/signer/
Create signer
create-signer → 200500
GET
/v2/farcaster/signer/developer_managed/
Status by public key
lookup-developer-managed-signer 1 param → 200400
POST
/v2/farcaster/signer/developer_managed/signed_key/
Register Signed Key
register-signed-key-for-developer-managed-signer body → 200400500
GET
/v2/farcaster/signer/list/
List signers
fetch-signers 2 params → 200400401500
POST
/v2/farcaster/signer/signed_key/
Register Signed Key
register-signed-key body → 200400403404500

Schemas 14

The contract defines 14 schemas that model the data the API accepts and returns. The most detailed are Signer (7 properties), RegisterDeveloperManagedSignedKeyReqBody (6 properties), RegisterSignerKeyReqBody (6 properties), ErrorRes (4 properties). Each schema is shown below with its type and property counts.

Signer
object
7 properties 3 required
RegisterDeveloperManagedSignedKeyReqBody
object
6 properties 4 required
RegisterSignerKeyReqBody
object
6 properties 4 required
AuthorizationUrlResponse
object
1 property 1 required
ErrorRes
object
Details for the error response
4 properties 1 required
SharedSignerPermission
string
DeveloperManagedSigner
object
4 properties 2 required
SignerListResponse
object
1 property 1 required
PublishMessageResponse
object
PublishMessageReqBody
object
SignerUUID
string
UUID of the signer. signeruuid is paired with API key, can't use a uuid made with a different API key.
Fid
integer
The unique identifier of a farcaster user or app (unsigned integer)
Ed25519PublicKey
string
Ed25519 public key
SignedKeyRequestSponsor
object
3 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

neynar-signer-api-openapi.yml Raw ↑

Other APIs Neynar publishes across the network.

Neynar Action API
Neynar Agents API
Neynar App Host API
Neynar AuthAddress API
Neynar Ban API
Neynar Block API
Neynar Cast API
Neynar Casts API
Neynar Channel API
Neynar Feed API
Neynar Fids API
Neynar fname API
Where this information came from

This is an independent, third-party profile of Neynar Signer API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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