chainpeek (Tanod) calldata decode
chainpeek (Tanod) calldata decode: decode EVM transaction calldata with a given signature, or look the selector up and return every candidate that decodes cleanly (unverified hints). Read-only.
Not tested: has real-world effectsour last check, 2026-10-10
0 of 0checks answered this week
n/amedian answer time
$0.003listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://tanod.dev/v1/chain/calldata
| Category | Everything else |
|---|---|
| Provider host | tanod.dev |
| Networks | eip155:137, eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"body": {
"calldata": "0xa9059cbb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003e8",
"signature": "transfer(address,uint256)"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"calldata": {
"description": "0x-prefixed calldata hex (at least a 4-byte selector).",
"type": "string"
},
"signature": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Optional function signature, e.g. transfer(address,uint256); omit to look the selector up and return every clean decode."
}
},
"required": [
"calldata"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"best": {
"type": [
"object",
"null"
]
},
"bytes": {
"type": "integer"
},
"candidates": {
"type": "array"
},
"decoded": {
"type": "array"
},
"note": {
"type": [
"string",
"null"
]
},
"selector": {
"type": "string"
}
},
"required": [
"selector",
"decoded"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}