WritersLogic Verifiable AI Agent Hub Warm Memory API
The Warm Memory API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for warm memory.
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OpenAPI Specification
openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Warm Memory API
version: 2.0.0
description: Pay-per-call agents settled in USDC on Base via x402. Every response carries a signed provenance envelope.
contact:
name: WritersLogic
url: https://writerslogic.com/agents
email: agents@writerslogic.com
servers:
- url: https://agents.writerslogic.com
tags:
- name: Warm Memory
paths:
/api/v1/warm-memory:
post:
operationId: warm_memory
summary: WARM verifiable agent memory
description: 'Persistent memory for AI agents as a pay-per-call API, no database to run. op=remember stores subject-predicate-object facts (or extracts them from free text; only facts whose subject and object appear verbatim are kept); a newer value for the same subject and predicate supersedes the old one, and the history stays queryable. op=recall searches by BM25 keyword ranking or exact triple pattern, now or as of any past date. op=forget deletes the content and leaves a tombstone; op=explain returns provenance and the supersession chain. Every fact has a ToIP SAID and every write returns a hash-chained receipt (signed when the hub has a signing key). Memory is private to the paying wallet (API-key callers pass a tenantId). Limits: 50 facts and 8,000 characters of text per call, 10,000 live facts per tenant. Retrieval is keyword-based, not semantic embeddings.
Price: 0.10 USDC on Base (x402).'
x-x402-price-usdc: '0.10'
x-x402-amount: '100000'
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.10'
x-audience: agent-infra
x-sample-url: https://agents.writerslogic.com/api/v1/samples/warm-memory
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- op
properties:
op:
type: string
enum:
- remember
- recall
- forget
- explain
tenantId:
type: string
pattern: ^[A-Za-z0-9_.-]{1,64}$
description: Required for API-key callers (namespace as key:<tenantId>; keep it unguessable). Ignored when a wallet paid.
facts:
type: array
maxItems: 50
items:
type: object
additionalProperties: false
required:
- subject
- predicate
- object
properties:
subject:
type: string
minLength: 1
maxLength: 500
predicate:
type: string
minLength: 1
maxLength: 500
description: Single-valued slot per subject, e.g. lives_in; a newer fact supersedes the older.
object:
type: string
minLength: 1
maxLength: 500
validFrom:
anyOf:
- type: integer
minimum: 0
maximum: 8640000000000000
- type: string
maxLength: 40
description: Epoch milliseconds or an ISO 8601 date/time (UTC when no offset).
validTo:
anyOf:
- type: integer
minimum: 0
maximum: 8640000000000000
- type: string
maxLength: 40
description: Epoch milliseconds or an ISO 8601 date/time (UTC when no offset).
source:
type: string
maxLength: 500
text:
type: string
maxLength: 8000
description: 'remember: free text; facts are extracted by a fast model and kept only if subject and object occur verbatim.'
source:
type: string
maxLength: 500
description: 'remember: provenance label for facts extracted from text.'
query:
type: string
maxLength: 500
pattern:
type: object
additionalProperties: false
description: Exact (case- and whitespace-insensitive) match on any of subject, predicate, object.
properties:
subject:
type: string
minLength: 1
maxLength: 500
predicate:
type: string
minLength: 1
maxLength: 500
object:
type: string
minLength: 1
maxLength: 500
said:
type: string
pattern: ^E[A-Za-z0-9_-]{43}$
asOf:
anyOf:
- type: integer
minimum: 0
maximum: 8640000000000000
- type: string
maxLength: 40
description: Epoch milliseconds or an ISO 8601 date/time (UTC when no offset).
limit:
type: integer
minimum: 1
maximum: 50
history:
type: string
enum:
- current
- all
description: 'recall: only facts current at asOf (default) or every status.'
example:
op: remember
facts:
- subject: alice
predicate: lives_in
object: Paris
validFrom: '2020-01-01'
- subject: alice
predicate: lives_in
object: Berlin
validFrom: '2025-01-01'
responses:
'200':
description: Paid result with provenance
content:
application/json:
schema:
type: object
properties:
data:
type: object
properties:
op:
type: string
tenant:
type: string
summary:
type: string
description: 'One line: what happened, e.g. "Stored 2 new facts, 1 earlier fact superseded."'
next:
type: string
description: The most useful follow-up call.
warnings:
type: array
items:
type: string
description: Degraded steps, e.g. text extraction unavailable while structured facts were stored.
remembered:
type: array
items:
type: object
results:
type: array
items:
type: object
forgotten:
type: array
items:
type: object
receipt:
type: object
description: '{op, seq, saids, digest, at, prevReceiptDigest, signature?, signer?}'
deterministic:
type: object
_provenance:
type: object
description: C2PA-aligned manifest and W3C VC 2.0 (eddsa-jcs-2022) issued by the hub DID; verify at POST /api/v1/verify-provenance
required:
- data
- _provenance
'400':
description: Invalid request (no payment consumed)
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
'401':
description: Invalid X-API-KEY
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
'402':
description: Payment required or invalid
content:
application/json:
schema:
type: object
description: x402 v2 PaymentRequired (also base64 in the PAYMENT-REQUIRED header)
properties:
x402Version:
type: integer
error:
type: string
code:
type: string
resource:
type: object
accepts:
type: array
items:
type: object
extensions:
type: object
'502':
description: Upstream failure; the payment is released or not settled
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
tags:
- Warm Memory
components:
securitySchemes:
x402:
type: apiKey
in: header
name: PAYMENT-SIGNATURE
description: x402 v2 payment payload (base64) sent after a 402 challenge
apiKey:
type: apiKey
in: header
name: X-API-KEY