Method Financial

MethodFi Payments API

ACH and clearing payments

GitHub OpenAPI
Business capability
Payment Initiation Management BC-1340.10

Operations 8

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /payments List payments · List all payments #
Ask an LLM
“Can I list only the payments that failed?”
“How do I see every payment made from one account?”
Tell an agent
List payments with status {status}.
Show payments from source account {source} to destination {destination}.
POST /payments Send a payment between accounts · Create a payment #
Ask an LLM
“How do I move money from a source account to a destination account?”
“Can I do a dry run of a payment before moving money?”
Tell an agent
Pay {amount} from account {source} to account {destination} with description {description}.
Dry-run a {amount} payment from {source} to {destination} described as {description}, dry_run {dry_run}.
GET /payments/{paymentId} Get a payment with expanded details · Retrieve a payment #
Ask an LLM
“Can I fetch a payment and expand its source and destination?”
“What does the versioned payment lookup return by paymentId?”
Tell an agent
Get payment {payment} with {expand} expanded.
Retrieve payment {payment} on API version {version}.
DELETE /payments/{paymentId} Cancel a pending payment (versioned) · Delete a payment #
Ask an LLM
“How do I cancel a payment that hasn't been processed yet?”
“Can only pending payments be canceled on the current API version?”
Tell an agent destructive · confirm first
Cancel pending payment {payment} on API version {version}.
Cancel payment {payment} using idempotency key {key}.
GET /payments/{pmt_id} Get a payment (legacy unversioned path) · Retrieve a payment #
Ask an LLM
“Is there an older payment lookup that takes pmt_id without a version header?”
“Can I still read a payment via the legacy pmt_id endpoint?”
Tell an agent
Look up payment {pmt_id} on the legacy unversioned endpoint.
Fetch payment {pmt_id} without sending a Method-Version header.
DELETE /payments/{pmt_id} Cancel a pending payment (legacy path) · Delete a pending payment #
Ask an LLM
“Can I cancel a pending payment through the older pmt_id endpoint?”
“Does the legacy delete-payment call work without a version header?”
Tell an agent destructive · confirm first
Cancel pending payment {pmt_id} on the legacy unversioned path.
Delete pending payment {pmt_id} without a Method-Version header.
POST /payments/{pmt_id}/reversals Reverse funds for a failed payment · Create a payment reversal #
Ask an LLM
“How do I balance funds after a payment fails?”
“Can I create a reversal for an unsuccessful payment?”
Tell an agent
Create a reversal for unsuccessful payment {pmt_id}.
Rebalance the funds of failed payment {pmt_id}.
GET /payments/{pmt_id}/reversals List reversals for a payment (legacy) · List payment reversals #
Ask an LLM
“Can I list a payment's reversals from the payments endpoints using pmt_id?”
“Where are the reversals for a payment on the older path?”
Tell an agent
List reversals for payment {pmt_id} on the legacy path.
Show reversals tied to payment {pmt_id}.

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/methodfi/refs/heads/main/openapi/methodfi-payments-api-openapi.yml

Schemas & Data

📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/methodfi/refs/heads/main/json-schema/methodfi-payment-create-request-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/methodfi/refs/heads/main/json-schema/methodfi-payment-response-2-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/methodfi/refs/heads/main/json-schema/methodfi-payment-list-response-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/methodfi/refs/heads/main/json-schema/methodfi-payment-response-schema.json

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OpenAPI Specification

methodfi-payments-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Methodfi Payments API
  version: '1.0'
  description: 'Operations tagged Payments across 2 of this provider''s published API definitions: methodfi-openapi-original.yml, methodfi-openapi.yml. Each path carries the servers of the definition it was published in.'
servers:
- url: https://production.methodfi.com
  description: Production
- url: https://sandbox.methodfi.com
  description: Sandbox
- url: https://dev.methodfi.com
  description: Development
tags:


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# Full source: https://raw.githubusercontent.com/api-evangelist/methodfi/refs/heads/main/openapi/methodfi-payments-api-openapi.yml