Get the x402 signers

Auth Node Token
Guide EVM chains

GET

/v1/x402/signers

The enclave addresses a guarded Safe lists as owners, with each member’s id and PCR0, and the Safe 1.4.1 contracts Exchain accepts. chainId is the network’s Base chain; chainIds lists every EVM chain this service registers Safes on for the node’s network. The Safe contracts are the same on each.

Authorization

nodeToken

headerAuthorizationBearer <token>

Node Token from the Exchain console. Works for wallets this node registered; the node’s network (preprod or mainnet) decides the network of the request. Use a preprod token in the playground.

Response Body

Signers and Safe contracts.

application/json

response

network*string

Value in"preprod""mainnet"

chainId*integer

The network’s Base chain (84532 for preprod, 8453 for mainnet).

chainIds?array<integer>

Every EVM chain this service registers guarded Safes on for the node’s network. The Safe contracts are the same on each.

signers*array<>

Items1 <= items

safe*

asOf*string

Match^[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{3}Z$

Formatdate-time

schemaVersion*string

Wire schema version, "1.1" today.

Value in"1.0""1.1"

chainTip*|null

Example Request

curl -X GET 'https://cosign.exchain.network/v1/x402/signers'

Example Request

curl -X GET 'https://cosign.exchain.network/v1/x402/signers'

Example ResponseSchema

{
  "network": "preprod",
  "chainId": 84532,
  "chainIds": [
    84532,
    11155111
  ],
  "signers": [
    {
      "address": "0x4e91c2a7d3b8f6051e2c9a7d4b3f8e6c1a5d9b20",
      "member": "exchain-eu-1a",
      "pcr0": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
    },
    {
      "address": "0x6b3f8d1c9e2a7405b8d3f1c6e9a2b7d4f0c8e531",
      "member": "exchain-eu-1b",
      "pcr0": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
    },
    {
      "address": "0x8b1e5d3c7f2a9046e1b8d5c3a7f9e2b4d6c1a083",
      "member": "exchain-eu-1c",
      "pcr0": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
    }
  ],
  "safe": {
    "version": "1.4.1",
    "singleton": "0x29fcb43b46531bca003ddc8fcb67ffe91900c762",
    "proxyFactory": "0x4e1dcf7ad4e460cfd30791ccc4f9c8a4f820ec67",
    "fallbackHandler": "0xfd0732dc9e303f09fcef3a7388ad10a83459ec99",
    "multiSendCallOnly": "0xa83c336b20401af773b6219ba5027174338d1836",
    "permit2": "0x000000000022d473030f116ddee9f6b43ac78ba3"
  },
  "asOf": "2026-11-05T14:22:07.318Z",
  "schemaVersion": "1.1",
  "chainTip": null
}

{  "network": "preprod",  "chainId": 84532,  "chainIds": [    84532,    11155111  ],  "signers": [    {      "address": "0x4e91c2a7d3b8f6051e2c9a7d4b3f8e6c1a5d9b20",      "member": "exchain-eu-1a",      "pcr0": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"    },    {      "address": "0x6b3f8d1c9e2a7405b8d3f1c6e9a2b7d4f0c8e531",      "member": "exchain-eu-1b",      "pcr0": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"    },    {      "address": "0x8b1e5d3c7f2a9046e1b8d5c3a7f9e2b4d6c1a083",      "member": "exchain-eu-1c",      "pcr0": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"    }  ],  "safe": {    "version": "1.4.1",    "singleton": "0x29fcb43b46531bca003ddc8fcb67ffe91900c762",    "proxyFactory": "0x4e1dcf7ad4e460cfd30791ccc4f9c8a4f820ec67",    "fallbackHandler": "0xfd0732dc9e303f09fcef3a7388ad10a83459ec99",    "multiSendCallOnly": "0xa83c336b20401af773b6219ba5027174338d1836",    "permit2": "0x000000000022d473030f116ddee9f6b43ac78ba3"  },  "asOf": "2026-11-05T14:22:07.318Z",  "schemaVersion": "1.1",  "chainTip": null}

Errors

Status	Code	Meaning
`400`	`quorum_mismatch`	An enclave’s address is not known yet; retry shortly.
`401`	`unauthorized`	The bearer credential is missing, unknown or revoked.

Every code and what to do about it: Errors and codes.

AuthorizationCopy Anchor Link

Response BodyCopy Anchor Link

ErrorsCopy Anchor Link

Authorization

Response Body

Errors