Owner

PrefectHQ

20 indexed repositories · View on GitHub

fastmcp
🚀 The fast, Pythonic way to build MCP servers and clients.

Python · 27735 stars
prefect
Prefect is a workflow orchestration framework for building resilient data pipelines in Python.

Python · 23866 stars
marvin
an ambient intelligence library

Python · 6199 stars
prefab
🎨 The generative UI framework that even humans can use.

HTML · 695 stars
prefect-helm
Helm charts for deploying Prefect Services

Go Template · 149 stars
prefect-mcp-server
Prefect MCP server

Python · 53 stars
terraform-provider-prefect
Terraform Provider for Prefect Cloud and OSS

Go · 40 stars
actions-prefect-deploy
A GitHub Action for deploying a Prefect flow to Prefect Cloud

Python · 39 stars
prefect-design

Vue · 38 stars
prometheus-prefect-exporter
Prometheus Prefect Exporter

Python · 35 stars
prefect-ui-library
Vue and Typescript library for Prefect 2 and Prefect Cloud 2

TypeScript · 34 stars
examples
Examples of how to use Prefect

Python · 31 stars
prefect-operator
A Kubernetes operator for managing Prefect servers and work pools

Go · 23 stars
graphs
Large scale graphs designed for Prefect

TypeScript · 10 stars
vue-compositions
A collection of reusable vue compositions

TypeScript · 7 stars
docs

HTML · 4 stars
terraform-prefect-ecs-worker
Terraform module to deploy a Prefect worker on Amazon ECS.

HCL · 4 stars
terraform-prefect-bucket-sensor
Terraform module for provisioning a bucket sensor to create Prefect events

HCL · 3 stars
renovate-config
Shared Renovate config presets extended org-wide (github>PrefectHQ/renovate-config).

0 stars
terraform-prefect-aci-worker
Terraform module to deploy a Prefect worker on Azure Container Instances

HCL · 0 stars

Beginner friendly Everything

Open All

OpenTrustBench security assessment for fastmcp Open

invalid

Difficulty 1/5 Under an hour Newbie friendliness 35/100

PrefectHQ/fastmcp#5177 · Opened Sep 19, 2026
Completed subflow loses its retry budget when reexecuted on parent retry Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

PrefectHQ/prefect#23152 · Opened Sep 18, 2026
Resource template with a non-ASCII or space literal is listed but can never be read Open

bug server

PrefectHQ/fastmcp#5166 · 1 assignee · Opened Sep 18, 2026
DockerWorker: container.wait() bypasses the client timeout, leaving runs in Submitting indefinitely Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 70/100

PrefectHQ/prefect#23150 · Opened Sep 18, 2026
`ForEach` does not work with the built-in list filters (`selectattr`, `rejectattr`, `compact`) Open

bug renderer

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PrefectHQ/prefab#521 · Opened Sep 18, 2026
ClientGroup.list_tools() turns child cancellation into TypeError: 'NoneType' object is not iterable Open

bug client

Difficulty 3/5 1-2 days Newbie friendliness 70/100

PrefectHQ/fastmcp#5160 · Opened Sep 18, 2026
BM25 search returns an old input schema after registering a newer tool version Open

bug server

PrefectHQ/fastmcp#5152 · 1 assignee · Opened Sep 18, 2026
`ssrf_safe_fetch` tries resolved addresses in a random, per-process order Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

PrefectHQ/fastmcp#5151 · Opened Sep 17, 2026
Tool returning `nan` or `inf` silently comes back as `null` Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

PrefectHQ/fastmcp#5150 · Opened Sep 17, 2026
Mapped children not yet started leave no task run when PrefectFutureList.result() raises the first failure Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PrefectHQ/prefect#23138 · 1 comment · Opened Sep 17, 2026
Flow ends COMPLETED when it returns a list of .map() results containing a FAILED task (states nested one level are ignored) Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 76/100

PrefectHQ/prefect#23137 · Opened Sep 17, 2026
GoogleTokenVerifier sends the access token in the tokeninfo URL, so HTTP client INFO logs expose it Open

auth bug high-priority security

PrefectHQ/fastmcp#5145 · 1 assignee · Opened Sep 17, 2026
Tasks: a poll refreshes the routing keys and the snapshot, but not the stored arguments Open

bug server

PrefectHQ/fastmcp#5143 · 1 assignee · Opened Sep 17, 2026
Consider linking Hexum hosted MCP for smaller coding-agent context Open

invalid

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

PrefectHQ/fastmcp#5142 · Opened Sep 16, 2026
Data-backed File URIs misinterpret reserved characters in names Open

bug

PrefectHQ/fastmcp#5137 · 1 assignee · Opened Sep 16, 2026
FileSystemProvider should expose original discovery failures after initialization Open

enhancement provider

Difficulty 3/5 1-2 days Newbie friendliness 65/100

PrefectHQ/fastmcp#5135 · Opened Sep 16, 2026
Context.session_id changes on every tool call in 4.x, breaking session state Open

bug high-priority server

Difficulty 4/5 3-5 days Newbie friendliness 72/100

PrefectHQ/fastmcp#5134 · Opened Sep 16, 2026
from_fastapi: tuple responses containing a model fail with an unresolved schema reference Open

bug openapi

PrefectHQ/fastmcp#5130 · 1 assignee · Opened Sep 16, 2026
Resource-template query values include URI fragments Open

bug server

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

PrefectHQ/fastmcp#5129 · Opened Sep 16, 2026
mark_deployments_ready updates every deployment on a queue on every worker poll Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 74/100

PrefectHQ/prefect#23129 · Opened Sep 15, 2026
OAuthProxy sends its own refresh token to the upstream revocation endpoint Open

auth bug

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

PrefectHQ/fastmcp#5120 · Opened Sep 15, 2026
PostgreSQL /flow_runs/filter times out for state-filtered START_TIME_ASC queries on large flow_run tables Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PrefectHQ/prefect#23127 · Opened Sep 15, 2026
Can't connect to MCP official example server Open

auth bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PrefectHQ/fastmcp#5116 · Opened Sep 15, 2026
BarChart "height=" kwarg not accepting reactive expression Open

bug python

Difficulty 3/5 1-2 days Newbie friendliness 64/100

PrefectHQ/prefab#519 · Opened Sep 15, 2026
Allow List vs Deny List for ACLs Open

cloud enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

PrefectHQ/prefect#23119 · Opened Sep 14, 2026
AzureProvider sends prompt=select_account to the consent page instead of Entra Open

auth bug

Difficulty 3/5 1-2 days Newbie friendliness 74/100

PrefectHQ/fastmcp#5107 · 1 comment · Opened Sep 14, 2026
Add Quick Run and Custom Run to the flow's Deployments tab Open

enhancement ui-v2

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

PrefectHQ/prefect#23110 · 1 comment · Opened Sep 14, 2026
prefect deploy ignores explicit schedules: [], retaining an active schedule (3.8.5) Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 76/100

PrefectHQ/prefect#23097 · 1 comment · Opened Sep 14, 2026
Support custom log storage implementations Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 45/100

PrefectHQ/prefect#23094 · Opened Sep 13, 2026
from_openapi: cookie parameters with array/object values send Python repr strings Open

bug low-priority openapi

Difficulty 3/5 1-2 days Newbie friendliness 74/100

PrefectHQ/fastmcp#5098 · Opened Sep 13, 2026
Windows: Claude Code project MCP servers are not discovered Open

bug cli

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

PrefectHQ/fastmcp#5094 · Opened Sep 13, 2026
docs: two live links now return 404 (ControlFlow and Slack invite) Open

Difficulty 1/5 Under an hour Newbie friendliness 92/100

PrefectHQ/marvin#1397 · Opened Sep 13, 2026
Docs: no Integrations → Auth page covers per-call, argument-level tool authorization Open

auth documentation

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

PrefectHQ/fastmcp#5069 · 1 comment · Opened Sep 12, 2026
Add a Prefect worker for Nebius Serverless Jobs Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 48/100

PrefectHQ/prefect#23087 · 1 reaction · Opened Sep 11, 2026
Upgrade checks failing on main branch Open

build failed

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PrefectHQ/prefab#518 · Opened Sep 11, 2026
OIDCProxy: The proxy sends scope parameter in /token request while exchanging Authorization code for a token. Open

auth bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PrefectHQ/fastmcp#5058 · Opened Sep 10, 2026
Docs: show post-call inspection of text tool results in custom middleware Open

documentation low-priority server

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

PrefectHQ/fastmcp#5055 · Opened Sep 10, 2026
[docs] Improve AutoEnum class documentation in API reference Open

docs

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PrefectHQ/prefect#23075 · 1 comment · Opened Sep 9, 2026
TASK_SOURCE identifies a task by its source text alone, so two tasks with identical bodies and different closures share a cache entry Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

PrefectHQ/prefect#23062 · Opened Sep 8, 2026
App-only backend tools are unreachable in hosts that dispatch only names from tools/list Open

bug mcp apps

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PrefectHQ/fastmcp#5042 · 2 comments · Opened Sep 8, 2026
Renderer pins a CPU core whenever the host supplies host context Open

bug renderer

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

PrefectHQ/prefab#515 · Opened Sep 8, 2026
docs: explain connecting a FastMCP server to FLUJO Open

documentation low-priority

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

PrefectHQ/fastmcp#5035 · 2 comments · Opened Sep 8, 2026
Unserializable return value on a tool with an output schema yields a silent success with repr-string content and no structured content Open

bug server

Difficulty 3/5 1-2 days Newbie friendliness 58/100

PrefectHQ/fastmcp#5030 · 1 comment · Opened Sep 7, 2026
`OpenAPIProvider` drops discriminator subtype fields when the discriminated schema is nested in the request body Open

bug openapi

Difficulty 3/5 1-2 days Newbie friendliness 70/100

PrefectHQ/fastmcp#5029 · Opened Sep 7, 2026
OpenAPI-generated tool names silently drop the tag/operation separator when operationId contains "/" Open

bug openapi

Difficulty 1/5 Under an hour Newbie friendliness 90/100

PrefectHQ/fastmcp#5017 · 1 comment · Opened Sep 5, 2026
Support MCP Apps app-provided tools Open

enhancement python

Difficulty 5/5 Over a week Newbie friendliness 45/100

PrefectHQ/prefab#504 · Opened Sep 5, 2026
Implement the SEP-2640 Skills extension for resource-backed skills Open

enhancement proposal server

Difficulty 5/5 Over a week Newbie friendliness 28/100

PrefectHQ/fastmcp#5016 · 1 comment · 4 reactions · Opened Sep 5, 2026
Investigate Windows CI worker crashes in credential tests Open

bug tests

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PrefectHQ/fastmcp#5010 · Opened Sep 5, 2026
OAuthProxy maps temporarily_unavailable and unexpected refresh failures to invalid_grant and reflects exception details Open

auth bug

Difficulty 3/5 1-2 days Newbie friendliness 72/100

PrefectHQ/fastmcp#5002 · 1 comment · Opened Sep 4, 2026
Immutable releases Open

enhancement low-priority

Difficulty 1/5 Under an hour Newbie friendliness 85/100

PrefectHQ/fastmcp#4983 · Opened Sep 2, 2026

Showing the newest 100

This page lists what was indexed most recently. Advanced filter has the whole inventory, narrowed by language, difficulty and how long a task takes.

Open advanced filter

PrefectHQ

Showing the newest 100

Get new issues in your inbox