Eval runs
Create several eval cases
Adds up to 100 cases to the suite in one call — the bulk form of the single create, and the way to import a suite or convert a repo’s test files without a round trip per case. Every entry needs a title and a non-empty steps array. Cases are validated together and reported individually: a failed entry does not roll back its committed siblings, so the response is 201 even when some entries were refused — read failed rather than branching on the status alone. Send an Idempotency-Key header to make a retry land on the same rows.
POST
/
projects
/
{projectId}
/
eval-suites
/
{suiteId}
/
cases
/
batch
Create several eval cases
curl --request POST \
--url https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"cases": [
{
"id": "c_lists_files",
"title": "lists files",
"steps": [
{
"id": "s1",
"kind": "prompt",
"prompt": "List the files in the project root."
},
{
"id": "s2",
"kind": "assert",
"assertion": {
"type": "toolCalledWith",
"toolName": "list_files",
"args": {
"args": {}
}
}
}
]
},
{
"title": "reads a file",
"steps": [
{
"id": "s1",
"kind": "prompt",
"prompt": "Read README.md."
},
{
"id": "s2",
"kind": "assert",
"assertion": {
"type": "toolCalledWith",
"toolName": "read_file",
"args": {
"args": {}
}
}
}
]
}
]
}
'import requests
url = "https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch"
payload = { "cases": [
{
"id": "c_lists_files",
"title": "lists files",
"steps": [
{
"id": "s1",
"kind": "prompt",
"prompt": "List the files in the project root."
},
{
"id": "s2",
"kind": "assert",
"assertion": {
"type": "toolCalledWith",
"toolName": "list_files",
"args": { "args": {} }
}
}
]
},
{
"title": "reads a file",
"steps": [
{
"id": "s1",
"kind": "prompt",
"prompt": "Read README.md."
},
{
"id": "s2",
"kind": "assert",
"assertion": {
"type": "toolCalledWith",
"toolName": "read_file",
"args": { "args": {} }
}
}
]
}
] }
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
cases: [
{
id: 'c_lists_files',
title: 'lists files',
steps: [
{id: 's1', kind: 'prompt', prompt: 'List the files in the project root.'},
{
id: 's2',
kind: 'assert',
assertion: {type: 'toolCalledWith', toolName: 'list_files', args: {args: {}}}
}
]
},
{
title: 'reads a file',
steps: [
{id: 's1', kind: 'prompt', prompt: 'Read README.md.'},
{
id: 's2',
kind: 'assert',
assertion: {type: 'toolCalledWith', toolName: 'read_file', args: {args: {}}}
}
]
}
]
})
};
fetch('https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch', 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://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'cases' => [
[
'id' => 'c_lists_files',
'title' => 'lists files',
'steps' => [
[
'id' => 's1',
'kind' => 'prompt',
'prompt' => 'List the files in the project root.'
],
[
'id' => 's2',
'kind' => 'assert',
'assertion' => [
'type' => 'toolCalledWith',
'toolName' => 'list_files',
'args' => [
'args' => [
]
]
]
]
]
],
[
'title' => 'reads a file',
'steps' => [
[
'id' => 's1',
'kind' => 'prompt',
'prompt' => 'Read README.md.'
],
[
'id' => 's2',
'kind' => 'assert',
'assertion' => [
'type' => 'toolCalledWith',
'toolName' => 'read_file',
'args' => [
'args' => [
]
]
]
]
]
]
]
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch"
payload := strings.NewReader("{\n \"cases\": [\n {\n \"id\": \"c_lists_files\",\n \"title\": \"lists files\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"List the files in the project root.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"list_files\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n },\n {\n \"title\": \"reads a file\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"Read README.md.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"read_file\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n }\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"cases\": [\n {\n \"id\": \"c_lists_files\",\n \"title\": \"lists files\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"List the files in the project root.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"list_files\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n },\n {\n \"title\": \"reads a file\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"Read README.md.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"read_file\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n }\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"cases\": [\n {\n \"id\": \"c_lists_files\",\n \"title\": \"lists files\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"List the files in the project root.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"list_files\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n },\n {\n \"title\": \"reads a file\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"Read README.md.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"read_file\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n }\n ]\n}"
response = http.request(request)
puts response.read_body{
"created": [
{
"index": 123,
"id": "<string>",
"title": "<string>",
"replayed": true,
"declaredId": "<string>",
"warnings": [
{
"code": "<string>",
"message": "<string>"
}
]
}
],
"failed": [
{
"index": 123,
"message": "<string>",
"title": "<string>",
"declaredId": "<string>"
}
],
"duplicatePolicy": {
"effectivePolicy": "<string>",
"coerced": true,
"requestedPolicy": "<string>"
},
"warnings": [
{
"code": "<string>",
"message": "<string>"
}
]
}
Authorizations
MCPJam API key (sk_…). Create one at Settings → API keys. Guest sessions cannot use the API, and API keys cannot manage other API keys.
Headers
Makes the write retry-safe. A repeat of the same request under the same key lands on the rows the first attempt authored instead of creating a second copy; those entries come back with replayed: true.
Maximum string length:
256Path Parameters
ID of the hosted project that contains the server.
Eval suite ID, as returned by POST /eval-runs.
Body
application/json
Author several cases in one call. Each entry takes the same fields as a single create. The 100-case cap is deliberately smaller than a suite file's 500-case limit, so a maximal file uploads in several calls.
Required array length:
1 - 100 elementsShow child attributes
Show child attributes
What to do with a case whose definition already matches one in the suite. An unrecognized value coerces to block and reports the coercion in the response's duplicatePolicy rather than failing the call.
Available options:
block, warn, create_anyway Required by warn and create_anyway. Recorded on the case's revision.
Minimum string length:
1Response
Per-case outcomes. Some entries may have failed; see failed.
A partial outcome by design: the cases in created were written even when failed is non-empty. Both arrays carry the index of the request entry they describe.
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⌘I
Create several eval cases
curl --request POST \
--url https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"cases": [
{
"id": "c_lists_files",
"title": "lists files",
"steps": [
{
"id": "s1",
"kind": "prompt",
"prompt": "List the files in the project root."
},
{
"id": "s2",
"kind": "assert",
"assertion": {
"type": "toolCalledWith",
"toolName": "list_files",
"args": {
"args": {}
}
}
}
]
},
{
"title": "reads a file",
"steps": [
{
"id": "s1",
"kind": "prompt",
"prompt": "Read README.md."
},
{
"id": "s2",
"kind": "assert",
"assertion": {
"type": "toolCalledWith",
"toolName": "read_file",
"args": {
"args": {}
}
}
}
]
}
]
}
'import requests
url = "https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch"
payload = { "cases": [
{
"id": "c_lists_files",
"title": "lists files",
"steps": [
{
"id": "s1",
"kind": "prompt",
"prompt": "List the files in the project root."
},
{
"id": "s2",
"kind": "assert",
"assertion": {
"type": "toolCalledWith",
"toolName": "list_files",
"args": { "args": {} }
}
}
]
},
{
"title": "reads a file",
"steps": [
{
"id": "s1",
"kind": "prompt",
"prompt": "Read README.md."
},
{
"id": "s2",
"kind": "assert",
"assertion": {
"type": "toolCalledWith",
"toolName": "read_file",
"args": { "args": {} }
}
}
]
}
] }
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
cases: [
{
id: 'c_lists_files',
title: 'lists files',
steps: [
{id: 's1', kind: 'prompt', prompt: 'List the files in the project root.'},
{
id: 's2',
kind: 'assert',
assertion: {type: 'toolCalledWith', toolName: 'list_files', args: {args: {}}}
}
]
},
{
title: 'reads a file',
steps: [
{id: 's1', kind: 'prompt', prompt: 'Read README.md.'},
{
id: 's2',
kind: 'assert',
assertion: {type: 'toolCalledWith', toolName: 'read_file', args: {args: {}}}
}
]
}
]
})
};
fetch('https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch', 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://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'cases' => [
[
'id' => 'c_lists_files',
'title' => 'lists files',
'steps' => [
[
'id' => 's1',
'kind' => 'prompt',
'prompt' => 'List the files in the project root.'
],
[
'id' => 's2',
'kind' => 'assert',
'assertion' => [
'type' => 'toolCalledWith',
'toolName' => 'list_files',
'args' => [
'args' => [
]
]
]
]
]
],
[
'title' => 'reads a file',
'steps' => [
[
'id' => 's1',
'kind' => 'prompt',
'prompt' => 'Read README.md.'
],
[
'id' => 's2',
'kind' => 'assert',
'assertion' => [
'type' => 'toolCalledWith',
'toolName' => 'read_file',
'args' => [
'args' => [
]
]
]
]
]
]
]
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch"
payload := strings.NewReader("{\n \"cases\": [\n {\n \"id\": \"c_lists_files\",\n \"title\": \"lists files\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"List the files in the project root.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"list_files\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n },\n {\n \"title\": \"reads a file\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"Read README.md.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"read_file\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n }\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"cases\": [\n {\n \"id\": \"c_lists_files\",\n \"title\": \"lists files\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"List the files in the project root.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"list_files\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n },\n {\n \"title\": \"reads a file\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"Read README.md.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"read_file\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n }\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://app.mcpjam.com/api/v1/projects/{projectId}/eval-suites/{suiteId}/cases/batch")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"cases\": [\n {\n \"id\": \"c_lists_files\",\n \"title\": \"lists files\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"List the files in the project root.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"list_files\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n },\n {\n \"title\": \"reads a file\",\n \"steps\": [\n {\n \"id\": \"s1\",\n \"kind\": \"prompt\",\n \"prompt\": \"Read README.md.\"\n },\n {\n \"id\": \"s2\",\n \"kind\": \"assert\",\n \"assertion\": {\n \"type\": \"toolCalledWith\",\n \"toolName\": \"read_file\",\n \"args\": {\n \"args\": {}\n }\n }\n }\n ]\n }\n ]\n}"
response = http.request(request)
puts response.read_body{
"created": [
{
"index": 123,
"id": "<string>",
"title": "<string>",
"replayed": true,
"declaredId": "<string>",
"warnings": [
{
"code": "<string>",
"message": "<string>"
}
]
}
],
"failed": [
{
"index": 123,
"message": "<string>",
"title": "<string>",
"declaredId": "<string>"
}
],
"duplicatePolicy": {
"effectivePolicy": "<string>",
"coerced": true,
"requestedPolicy": "<string>"
},
"warnings": [
{
"code": "<string>",
"message": "<string>"
}
]
}