Mempool

GET /mempool

Return transactions that are currently stored in Blockfrost mempool, waiting to be included in a newly minted block. Shows only transactions submitted via Blockfrost.io.

Hosted Endpoint only available for hosted variant.

Request

Query Parameters

count integer

Possible values: >= 1 and <= 100

Default value: 100

The number of results displayed on one page.

page integer

Possible values: >= 1 and <= 21474836

Default value: 1

The page number for listing the results.

order string

Possible values: [asc, desc]

Default value: asc

Ordered by the time of transaction submission. By default, we return oldest first, newest last.

Responses

• 200
• 400
• 403
• 404
• 418
• 429
• 500

---

Return the contents of the mempool

application/json

Schema

Example (from schema)

---

Schema

• Array [
tx_hash string required

Hash of the transaction

• ]

[
  {
    "tx_hash": "1a0570af966fb355a7160e4f82d5a80b8681b7955f5d44bec0dce628516157f0"
  }
]

Bad request

application/json

Schema

Example (from schema)

---

Schema

status_code integer required
error string required
message string required

{
  "status_code": 400,
  "error": "Bad Request",
  "message": "Backend did not understand your request."
}

Authentication secret is missing or invalid

application/json

Schema

Example (from schema)

---

Schema

status_code integer required
error string required
message string required

{
  "status_code": 403,
  "error": "Forbidden",
  "message": "Invalid project token."
}

Component not found

application/json

Schema

Example (from schema)

---

Schema

status_code integer required
error string required
message string required

{
  "status_code": 404,
  "error": "Not Found",
  "message": "The requested component has not been found."
}

IP has been auto-banned for extensive sending of requests after usage limit has been reached

application/json

Schema

Example (from schema)

---

Schema

status_code integer required
error string required
message string required

{
  "status_code": 418,
  "error": "Requested Banned",
  "message": "IP has been auto-banned for flooding."
}

Usage limit reached

application/json

Schema

Example (from schema)

---

Schema

status_code integer required
error string required
message string required

{
  "status_code": 429,
  "error": "Project Over Limit",
  "message": "Usage is over limit."
}

Internal Server Error

application/json

Schema

Example (from schema)

---

Schema

status_code integer required
error string required
message string required

{
  "status_code": 500,
  "error": "Internal Server Error",
  "message": "An unexpected response was received from the backend."
}

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