Read a reviewed plan's exact diff
curl --request GET \
--url https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff \
--header 'Authorization: Bearer <token>' \
--header 'checkfu-version: <checkfu-version>'import requests
url = "https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff"
headers = {
"checkfu-version": "<checkfu-version>",
"Authorization": "Bearer <token>"
}
response = requests.get(url, headers=headers)
print(response.text)const options = {
method: 'GET',
headers: {'checkfu-version': '<checkfu-version>', Authorization: 'Bearer <token>'}
};
fetch('https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"checkfu-version: <checkfu-version>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("checkfu-version", "<checkfu-version>")
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff")
.header("checkfu-version", "<checkfu-version>")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["checkfu-version"] = '<checkfu-version>'
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"artifact": {
"id": "<string>",
"revision": 1,
"blueprint_apply_plan_id": "<string>",
"plan_fingerprint": "<string>",
"reviewed_body_digest": "<string>",
"change_count": 1,
"canonical_body_utf8_bytes": 1,
"expires_at": "<string>"
},
"frames": [
{
"type": "change",
"frame_sequence": 1,
"change_sequence": 1,
"plan_entry_sequence": 1,
"resource": {
"resource_kind": "action_policy",
"resource_id": "<string>"
},
"logical_name": "<string>",
"source_location": {
"file": "<string>",
"canonical_path": "<string>",
"start": {
"line": 1,
"column": 1,
"byte": 1
},
"end": {
"line": 1,
"column": 1,
"byte": 1
},
"derived": true
},
"semantic_path": "<string>",
"before": {
"sha256": "<string>",
"utf8_bytes": 2097152,
"chunk_count": 32
},
"after": {
"sha256": "<string>",
"utf8_bytes": 2097152,
"chunk_count": 32
}
}
],
"next_cursor": "<string>"
}{
"error": {
"type": "validation.malformed",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#validation-malformed"
}
}{
"error": {
"type": "auth.invalid_key",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#auth-invalid-key"
}
}{
"error": {
"type": "auth.disabled_tenancy",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#auth-disabled-tenancy"
}
}{
"error": {
"type": "validation.not_found",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#validation-not-found"
}
}{
"error": {
"type": "validation.conflict",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#validation-conflict"
}
}{
"error": {
"type": "budget.exceeded",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#budget-exceeded"
}
}{
"error": {
"type": "runtime.internal",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#runtime-internal"
}
}Read a reviewed plan's exact diff
Returns one page of the immutable secret-free review artifact behind a reviewed Application plan: bounded change frames with exact canonical semantic values in base64 chunks, ordered by change sequence, with an authenticated opaque cursor. Available only to a signed-in person; API keys, services, models, and MCP transports are denied (§7.4). Responses never carry raw source text.
Checkfu support posture: alpha; hosted. Required evidence journey: blueprint-authority. Deployment-specific readiness and the latest proven release are available from GET /v1/support/capabilities.
GET
/
v1
/
agent-blueprint-application-plans
/
{id}
/
diff
Read a reviewed plan's exact diff
curl --request GET \
--url https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff \
--header 'Authorization: Bearer <token>' \
--header 'checkfu-version: <checkfu-version>'import requests
url = "https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff"
headers = {
"checkfu-version": "<checkfu-version>",
"Authorization": "Bearer <token>"
}
response = requests.get(url, headers=headers)
print(response.text)const options = {
method: 'GET',
headers: {'checkfu-version': '<checkfu-version>', Authorization: 'Bearer <token>'}
};
fetch('https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"checkfu-version: <checkfu-version>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("checkfu-version", "<checkfu-version>")
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff")
.header("checkfu-version", "<checkfu-version>")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.checkfu.com/v1/agent-blueprint-application-plans/{id}/diff")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["checkfu-version"] = '<checkfu-version>'
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"artifact": {
"id": "<string>",
"revision": 1,
"blueprint_apply_plan_id": "<string>",
"plan_fingerprint": "<string>",
"reviewed_body_digest": "<string>",
"change_count": 1,
"canonical_body_utf8_bytes": 1,
"expires_at": "<string>"
},
"frames": [
{
"type": "change",
"frame_sequence": 1,
"change_sequence": 1,
"plan_entry_sequence": 1,
"resource": {
"resource_kind": "action_policy",
"resource_id": "<string>"
},
"logical_name": "<string>",
"source_location": {
"file": "<string>",
"canonical_path": "<string>",
"start": {
"line": 1,
"column": 1,
"byte": 1
},
"end": {
"line": 1,
"column": 1,
"byte": 1
},
"derived": true
},
"semantic_path": "<string>",
"before": {
"sha256": "<string>",
"utf8_bytes": 2097152,
"chunk_count": 32
},
"after": {
"sha256": "<string>",
"utf8_bytes": 2097152,
"chunk_count": 32
}
}
],
"next_cursor": "<string>"
}{
"error": {
"type": "validation.malformed",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#validation-malformed"
}
}{
"error": {
"type": "auth.invalid_key",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#auth-invalid-key"
}
}{
"error": {
"type": "auth.disabled_tenancy",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#auth-disabled-tenancy"
}
}{
"error": {
"type": "validation.not_found",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#validation-not-found"
}
}{
"error": {
"type": "validation.conflict",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#validation-conflict"
}
}{
"error": {
"type": "budget.exceeded",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#budget-exceeded"
}
}{
"error": {
"type": "runtime.internal",
"message": "<string>",
"more": "https://docs.checkfu.com/reference/errors#runtime-internal"
}
}Authorizations
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Headers
Available options:
2026-08-31 Path Parameters
Pattern:
^bplan_[0-9a-f]{32}$Query Parameters
Required string length:
43 - 512Pattern:
^[A-Za-z0-9_-]+$Response
Authorized, no-store, bounded page over one immutable exact review artifact.