Annalist AI API
The ai API from Annalist — 3 operation(s) for ai.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Annalist Dev AI API
version: 0.9.0
x-guidance: 'Annalist sells signed data for agents, priced per call over x402 (USDC on Base or Solana). Start with the free GET /v1/catalog: every paid route with the question it answers, its price and an example. Hyperliquid in one call: GET /v1/perp/full?coin=BTC (crowd state, smart-money positioning, liquidation levels). Before paying an x402 service: GET /v1/checks/service?host=, or the free GET /v1/verify/attestation?host=. Before connecting an MCP server: GET /v1/mcp/server?url=, or the free GET /v1/verify/mcp?url=. Before an agent shops on a site: the free GET /v1/verify/store?domain=, or GET /v1/web/readiness?domain=. Every answer is Ed25519-signed; the key is at /.well-known/annalist-key.json. Not investment advice.'
description: 'Operations tagged ai across 2 of this provider''s published API definitions: annalist-dev-openapi.json, openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://api.annalist.dev
tags:
- name: AI
paths:
/v1/ai/retirements:
get:
operationId: ai_retirements
tags:
- AI
summary: When will this AI model be shut down on each platform, and what replaces it?
description: 'Retirement calendar for AI models across platforms: shutdown dates, ''not sooner than'' floors, states and recommended replacements from the official Anthropic, OpenAI and Amazon Bedrock deprecation pages, plus Azure, Vertex, Gemini and others, recorded daily so moved dates show. The same model often retires on different dates on different platforms. One model with model=, or upcoming shutdowns. Signed.'
x-price: $0.005
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.005000'
protocols:
- x402: {}
parameters:
- name: model
in: query
required: false
schema:
type: string
description: 'optional: part of a model id, for example gpt-4o or claude-sonnet-4-5'
- name: platform
in: query
required: false
schema:
type: string
description: 'optional: anthropic, openai, bedrock, azure, vertex_ai, gemini...'
- name: days
in: query
required: false
schema:
type: string
description: upcoming shutdowns within this many days, 1 to 365 (default 90)
responses:
'200':
description: Signed data
content:
application/json:
schema:
type: object
required:
- as_of
- data
- signature
properties:
as_of:
type: string
format: date-time
data:
type: object
method:
type: object
request_id:
type: string
stale:
type: boolean
sources:
type: array
items:
type: string
notice:
type: string
key_id:
type: string
signature:
type: string
description: Ed25519 over RFC 8785 canonical JSON of {as_of, data, method, request_id}
signature_info:
type: string
example:
data:
model: gpt-4o
entries:
- platform: openai
model: gpt-4o-2024-08-06
state: deprecated
shutdown: '2027-01-14'
replacement: gpt-6-luna
'402':
description: Payment required (x402 v2, USDC on Base or Solana)
servers:
- url: https://api.annalist.dev
/v1/ai/prices:
get:
operationId: ai_prices
tags:
- AI
summary: What does this AI model cost per million tokens, on which providers, and which…
description: 'AI model prices per million tokens (input, output, cache, batch) with context window, for about 4,000 models across providers. With model=: its price history and the same model on other providers. Without: a list filtered by provider, mode, min_context and max_input price, sorted by input, output or context. History from January 2026. Source: LiteLLM''s open price file (MIT). Signed.'
x-price: $0.01
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.010000'
protocols:
- x402: {}
parameters:
- name: model
in: query
required: false
schema:
type: string
- name: provider
in: query
required: false
schema:
type: string
- name: mode
in: query
required: false
schema:
type: string
description: chat, embedding, image_generation...
- name: min_context
in: query
required: false
schema:
type: string
- name: max_input
in: query
required: false
schema:
type: string
description: max input price, USD per million tokens
- name: sort
in: query
required: false
schema:
type: string
enum:
- input
- output
- context
- name: limit
in: query
required: false
schema:
type: string
responses:
'200':
description: Signed data
content:
application/json:
schema:
type: object
required:
- as_of
- data
- signature
properties:
as_of:
type: string
format: date-time
data:
type: object
method:
type: object
request_id:
type: string
stale:
type: boolean
sources:
type: array
items:
type: string
notice:
type: string
key_id:
type: string
signature:
type: string
description: Ed25519 over RFC 8785 canonical JSON of {as_of, data, method, request_id}
signature_info:
type: string
example:
data:
model:
model: claude-sonnet-4-5
input_per_mtok: 3
output_per_mtok: 15
max_input_tokens: 200000
history: []
also_listed_as:
- model: bedrock/anthropic.claude-sonnet-4-5
input_per_mtok: 3.3
'402':
description: Payment required (x402 v2, USDC on Base or Solana)
servers:
- url: https://api.annalist.dev
/v1/ai/changes:
get:
operationId: ai_changes
tags:
- AI
summary: Which AI model prices changed recently, and which models were added or retired?
description: 'Recent changes to AI model prices and availability across providers, newest first: price cuts and raises per field (with the change), models added and removed, context-window changes and deprecation dates, for the last 1 to 90 days, optionally by provider or model name. Source: LiteLLM''s open price file (MIT), recorded daily. Signed.'
x-price: $0.01
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.010000'
protocols:
- x402: {}
parameters:
- name: days
in: query
required: false
schema:
type: string
- name: provider
in: query
required: false
schema:
type: string
- name: model
in: query
required: false
schema:
type: string
responses:
'200':
description: Signed data
content:
application/json:
schema:
type: object
required:
- as_of
- data
- signature
properties:
as_of:
type: string
format: date-time
data:
type: object
method:
type: object
request_id:
type: string
stale:
type: boolean
sources:
type: array
items:
type: string
notice:
type: string
key_id:
type: string
signature:
type: string
description: Ed25519 over RFC 8785 canonical JSON of {as_of, data, method, request_id}
signature_info:
type: string
example:
data:
days: 30
counts:
price_changed: 120
model_added: 40
events:
- date: '2026-10-13'
model: gpt-x
type: price_changed
field: input_cost_per_token
from: 2.5e-06
to: 1.25e-06
change: -0.5
'402':
description: Payment required (x402 v2, USDC on Base or Solana)
servers:
- url: https://api.annalist.dev
x-refined-from:
- annalist-dev-openapi.json
- openapi.json