Letta · Capability
Letta API — Archives
Archival memory archives — RAG-style long-term store of passages attached to agents. 9 operations. Lead operation: Create Archive. Self-contained Naftiko capability covering one Letta business surface.
Letta API — Archives is a Naftiko capability published by Letta, one of 36 capabilities the APIs.io network indexes for this provider. It bundles 9 operations across the POST, GET, DELETE, and PATCH methods rooted at /v1/archives.
The capability includes 3 read-only operations and 6 state-changing operations. Lead operation: Create Archive. Can be deployed as a REST endpoint, MCP tool, or Agent Skill via Naftiko.
Tagged areas include Letta, Stateful Agents, and Archives.
What You Can Do
POST
Create_archive
— Create Archive
/v1/archives/
GET
List_archives
— List Archives
/v1/archives/
GET
Retrieve_archive
— Retrieve Archive
/v1/archives/{archive-id}
PATCH
Modify_archive
— Modify Archive
/v1/archives/{archive-id}
DELETE
Delete_archive
— Delete Archive
/v1/archives/{archive-id}
GET
List_agents_for_archive
— List Agents for Archive
/v1/archives/{archive-id}/agents
POST
Create_passage_in_archive
— Create Passage in Archive
/v1/archives/{archive-id}/passages
POST
Create_passages_in_archive
— Create Passages in Archive
/v1/archives/{archive-id}/passages/batch
DELETE
Delete_passage_from_archive
— Delete Passage from Archive
/v1/archives/{archive-id}/passages/{passage-id}
MCP Tools
create-archive
Create Archive
list-archives
List Archives
read-only
idempotent
retrieve-archive
Retrieve Archive
read-only
idempotent
modify-archive
Modify Archive
idempotent
delete-archive
Delete Archive
idempotent
list-agents-archive
List Agents for Archive
read-only
idempotent
create-passage-archive
Create Passage in Archive
create-passages-archive
Create Passages in Archive
delete-passage-archive
Delete Passage from Archive
idempotent
Capability Spec
naftiko: "1.0.0-alpha2"
info:
label: "Letta API — Archives"
description: >-
Archival memory archives — RAG-style long-term store of passages attached to agents. 9 operations. Lead operation: Create Archive. Self-contained Naftiko capability covering one Letta business surface.
tags:
- Letta
- Stateful Agents
- Archives
created: "2026-05-08"
modified: "2026-05-22"
binds:
- namespace: env
keys:
LETTA_API_KEY: LETTA_API_KEY
capability:
consumes:
- type: http
namespace: "letta-archives"
baseUri: "https://api.letta.com"
description: "Letta API — Archives business capability. Self-contained, no shared references."
authentication:
type: bearer
token: "{{env.LETTA_API_KEY}}"
resources:
- name: "archives"
path: "/v1/archives/"
operations:
- name: "create_archive"
method: POST
description: "Create Archive"
inputParameters:
- name: "body"
in: body
type: object
required: true
description: "Request payload"
outputRawFormat: json
outputParameters:
- name: result
type: object
value: "$."
- name: "list_archives"
method: GET
description: "List Archives"
inputParameters:
- name: "before"
in: query
type: string
required: false
description: "Archive ID cursor for pagination. Returns archives that come before this archive ID in the specified sort order"
- name: "after"
in: query
type: string
required: false
description: "Archive ID cursor for pagination. Returns archives that come after this archive ID in the specified sort order"
- name: "limit"
in: query
type: string
required: false
description: "Maximum number of archives to return"
- name: "order"
in: query
type: string
required: false
description: "Sort order for archives by creation time. 'asc' for oldest first, 'desc' for newest first"
- name: "order_by"
in: query
type: string
required: false
description: "Field to sort by"
- name: "name"
in: query
type: string
required: false
description: "Filter by archive name (exact match)"
- name: "agent_id"
in: query
type: string
required: false
description: "Only archives attached to this agent ID"
outputRawFormat: json
outputParameters:
- name: result
type: object
value: "$."
- name: "archives-by-id"
path: "/v1/archives/{archive_id}"
operations:
- name: "retrieve_archive"
method: GET
description: "Retrieve Archive"
inputParameters:
- name: "archive_id"
in: path
type: string
required: true
description: "The ID of the archive in the format 'archive-<uuid4>'"
outputRawFormat: json
outputParameters:
- name: result
type: object
value: "$."
- name: "modify_archive"
method: PATCH
description: "Modify Archive"
inputParameters:
- name: "archive_id"
in: path
type: string
required: true
description: "The ID of the archive in the format 'archive-<uuid4>'"
- name: "body"
in: body
type: object
required: true
description: "Request payload"
outputRawFormat: json
outputParameters:
- name: result
type: object
value: "$."
- name: "delete_archive"
method: DELETE
description: "Delete Archive"
inputParameters:
- name: "archive_id"
in: path
type: string
required: true
description: "The ID of the archive in the format 'archive-<uuid4>'"
outputRawFormat: json
outputParameters:
- name: result
type: object
value: "$."
- name: "archives-by-id-agents"
path: "/v1/archives/{archive_id}/agents"
operations:
- name: "list_agents_for_archive"
method: GET
description: "List Agents for Archive"
inputParameters:
- name: "archive_id"
in: path
type: string
required: true
description: "The ID of the archive in the format 'archive-<uuid4>'"
- name: "before"
in: query
type: string
required: false
description: "Agent ID cursor for pagination. Returns agents that come before this agent ID in the specified sort order"
- name: "after"
in: query
type: string
required: false
description: "Agent ID cursor for pagination. Returns agents that come after this agent ID in the specified sort order"
- name: "limit"
in: query
type: string
required: false
description: "Maximum number of agents to return"
- name: "order"
in: query
type: string
required: false
description: "Sort order for agents by creation time. 'asc' for oldest first, 'desc' for newest first"
- name: "include"
in: query
type: array
required: false
description: "Specify which relational fields to include in the response. No relationships are included by default."
outputRawFormat: json
outputParameters:
- name: result
type: object
value: "$."
- name: "archives-by-id-passages"
path: "/v1/archives/{archive_id}/passages"
operations:
- name: "create_passage_in_archive"
method: POST
description: "Create Passage in Archive"
inputParameters:
- name: "archive_id"
in: path
type: string
required: true
description: "The ID of the archive in the format 'archive-<uuid4>'"
- name: "body"
in: body
type: object
required: true
description: "Request payload"
outputRawFormat: json
outputParameters:
- name: result
type: object
value: "$."
- name: "archives-by-id-passages-batch"
path: "/v1/archives/{archive_id}/passages/batch"
operations:
- name: "create_passages_in_archive"
method: POST
description: "Create Passages in Archive"
inputParameters:
- name: "archive_id"
in: path
type: string
required: true
description: "The ID of the archive in the format 'archive-<uuid4>'"
- name: "body"
in: body
type: object
required: true
description: "Request payload"
outputRawFormat: json
outputParameters:
- name: result
type: object
value: "$."
- name: "archives-by-id-passages-by-id"
path: "/v1/archives/{archive_id}/passages/{passage_id}"
operations:
- name: "delete_passage_from_archive"
method: DELETE
description: "Delete Passage from Archive"
inputParameters:
- name: "archive_id"
in: path
type: string
required: true
description: "The ID of the archive in the format 'archive-<uuid4>'"
- name: "passage_id"
in: path
type: string
required: true
description: "The ID of the passage in the format 'passage-<uuid4>'"
outputRawFormat: json
outputParameters:
- name: result
type: object
value: "$."
exposes:
- type: rest
namespace: "letta-archives-rest"
port: 8080
description: "REST adapter for Letta API — Archives. One Spectral-compliant resource per consumed operation."
resources:
- path: "/v1/archives/"
name: "archives"
description: "REST surface for archives."
operations:
- method: POST
name: "create_archive"
description: "Create Archive"
call: "letta-archives.create_archive"
with:
"body": "rest.body"
outputParameters:
- type: object
mapping: "$."
- method: GET
name: "list_archives"
description: "List Archives"
call: "letta-archives.list_archives"
with:
"before": "rest.before"
"after": "rest.after"
"limit": "rest.limit"
"order": "rest.order"
"order_by": "rest.order_by"
"name": "rest.name"
"agent_id": "rest.agent_id"
outputParameters:
- type: object
mapping: "$."
- path: "/v1/archives/{archive-id}"
name: "archives-by-id"
description: "REST surface for archives-by-id."
operations:
- method: GET
name: "retrieve_archive"
description: "Retrieve Archive"
call: "letta-archives.retrieve_archive"
with:
"archive_id": "rest.archive_id"
outputParameters:
- type: object
mapping: "$."
- method: PATCH
name: "modify_archive"
description: "Modify Archive"
call: "letta-archives.modify_archive"
with:
"archive_id": "rest.archive_id"
"body": "rest.body"
outputParameters:
- type: object
mapping: "$."
- method: DELETE
name: "delete_archive"
description: "Delete Archive"
call: "letta-archives.delete_archive"
with:
"archive_id": "rest.archive_id"
outputParameters:
- type: object
mapping: "$."
- path: "/v1/archives/{archive-id}/agents"
name: "archives-by-id-agents"
description: "REST surface for archives-by-id-agents."
operations:
- method: GET
name: "list_agents_for_archive"
description: "List Agents for Archive"
call: "letta-archives.list_agents_for_archive"
with:
"archive_id": "rest.archive_id"
"before": "rest.before"
"after": "rest.after"
"limit": "rest.limit"
"order": "rest.order"
"include": "rest.include"
outputParameters:
- type: object
mapping: "$."
- path: "/v1/archives/{archive-id}/passages"
name: "archives-by-id-passages"
description: "REST surface for archives-by-id-passages."
operations:
- method: POST
name: "create_passage_in_archive"
description: "Create Passage in Archive"
call: "letta-archives.create_passage_in_archive"
with:
"archive_id": "rest.archive_id"
"body": "rest.body"
outputParameters:
- type: object
mapping: "$."
- path: "/v1/archives/{archive-id}/passages/batch"
name: "archives-by-id-passages-batch"
description: "REST surface for archives-by-id-passages-batch."
operations:
- method: POST
name: "create_passages_in_archive"
description: "Create Passages in Archive"
call: "letta-archives.create_passages_in_archive"
with:
"archive_id": "rest.archive_id"
"body": "rest.body"
outputParameters:
- type: object
mapping: "$."
- path: "/v1/archives/{archive-id}/passages/{passage-id}"
name: "archives-by-id-passages-by-id"
description: "REST surface for archives-by-id-passages-by-id."
operations:
- method: DELETE
name: "delete_passage_from_archive"
description: "Delete Passage from Archive"
call: "letta-archives.delete_passage_from_archive"
with:
"archive_id": "rest.archive_id"
"passage_id": "rest.passage_id"
outputParameters:
- type: object
mapping: "$."
- type: mcp
namespace: "letta-archives-mcp"
port: 9090
transport: http
description: "MCP adapter for Letta API — Archives. One verb-noun tool per consumed operation."
tools:
- name: "create-archive"
description: "Create Archive"
hints:
readOnly: false
destructive: false
idempotent: false
call: "letta-archives.create_archive"
with:
"body": "tools.body"
outputParameters:
- type: object
mapping: "$."
- name: "list-archives"
description: "List Archives"
hints:
readOnly: true
destructive: false
idempotent: true
call: "letta-archives.list_archives"
with:
"before": "tools.before"
"after": "tools.after"
"limit": "tools.limit"
"order": "tools.order"
"order_by": "tools.order_by"
"name": "tools.name"
"agent_id": "tools.agent_id"
outputParameters:
- type: object
mapping: "$."
- name: "retrieve-archive"
description: "Retrieve Archive"
hints:
readOnly: true
destructive: false
idempotent: true
call: "letta-archives.retrieve_archive"
with:
"archive_id": "tools.archive_id"
outputParameters:
- type: object
mapping: "$."
- name: "modify-archive"
description: "Modify Archive"
hints:
readOnly: false
destructive: false
idempotent: true
call: "letta-archives.modify_archive"
with:
"archive_id": "tools.archive_id"
"body": "tools.body"
outputParameters:
- type: object
mapping: "$."
- name: "delete-archive"
description: "Delete Archive"
hints:
readOnly: false
destructive: true
idempotent: true
call: "letta-archives.delete_archive"
with:
"archive_id": "tools.archive_id"
outputParameters:
- type: object
mapping: "$."
- name: "list-agents-archive"
description: "List Agents for Archive"
hints:
readOnly: true
destructive: false
idempotent: true
call: "letta-archives.list_agents_for_archive"
with:
"archive_id": "tools.archive_id"
"before": "tools.before"
"after": "tools.after"
"limit": "tools.limit"
"order": "tools.order"
"include": "tools.include"
outputParameters:
- type: object
mapping: "$."
- name: "create-passage-archive"
description: "Create Passage in Archive"
hints:
readOnly: false
destructive: false
idempotent: false
call: "letta-archives.create_passage_in_archive"
with:
"archive_id": "tools.archive_id"
"body": "tools.body"
outputParameters:
- type: object
mapping: "$."
- name: "create-passages-archive"
description: "Create Passages in Archive"
hints:
readOnly: false
destructive: false
idempotent: false
call: "letta-archives.create_passages_in_archive"
with:
"archive_id": "tools.archive_id"
"body": "tools.body"
outputParameters:
- type: object
mapping: "$."
- name: "delete-passage-archive"
description: "Delete Passage from Archive"
hints:
readOnly: false
destructive: true
idempotent: true
call: "letta-archives.delete_passage_from_archive"
with:
"archive_id": "tools.archive_id"
"passage_id": "tools.passage_id"
outputParameters:
- type: object
mapping: "$."