flux-kontext

Name: flux-kontext
Author: prime-skills

31stars9forks

How to install flux-kontext?

prime-skills/runcomfy-agent-skills/flux-kontext

$npx -y skills add prime-skills/runcomfy-agent-skills --skill flux-kontext

Installs into the current project.

Summary

Edit images with Flux 1 Kontext Pro (Black Forest Labs' precise local image-edit model) on RunComfy — bundled with the model's documented prompting patterns so the skill gets sharper output than naive prompting against the same model. Documents Flux Kontext's strengths (single-re

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SKILL.md

1	# Flux Kontext Pro — Pro Pack on RunComfy
2
3	[runcomfy.com](https://www.runcomfy.com/?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-kontext) · [Model page](https://www.runcomfy.com/models/blackforestlabs/flux-1-kontext-pro/image-to-image?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-kontext) · [GitHub](https://github.com/agentspace-so/runcomfy-skills/tree/main/flux-kontext)
4
5	Black Forest Labs' Flux 1 Kontext Pro — single-reference precise local image edit — hosted on the RunComfy Model API. Strong prompt control, consistent outputs, high fidelity.
6
7	```bash
8	npx skills add agentspace-so/runcomfy-skills --skill flux-kontext -g
9	```
10
11	## When to pick this model (vs siblings)
12
13	\| You want \| Use \|
14	\|---\|---\|
15	\| Single-image precise local edit ("she's now holding X") \| Flux Kontext \|
16	\| High-fidelity preservation of source identity \| Flux Kontext \|
17	\| Batch edits across 1–20 images \| Nano Banana Edit \|
18	\| Edit multilingual / embedded text in image \| GPT Image 2 edit \|
19	\| Generate from scratch, no source image \| Flux 2 Klein \|
20
21	If the user said "Flux Kontext" / "kontext" / "BFL Kontext" explicitly, route here regardless.
22
23	## Prerequisites
24
25	1. RunComfy CLI — `npm i -g @runcomfy/cli`
26	2. RunComfy account — `runcomfy login` opens a browser device-code flow.
27	3. CI / containers — set `RUNCOMFY_TOKEN=<token>` instead of `runcomfy login`.
28
29	## Endpoints + input schema
30
31	### `blackforestlabs/flux-1-kontext/pro/edit`
32
33	\| Field \| Type \| Required \| Default \| Notes \|
34	\|---\|---\|---\|---\|---\|
35	\| `prompt` \| string \| yes \| — \| Single declarative edit instruction. \|
36	\| `image` \| string \| yes \| — \| Single source image URL (publicly fetchable HTTPS). \|
37	\| `aspect_ratio` \| enum \| no \| (input) \| Pick from supported W:H options on the model page. \|
38	\| `seed` \| int \| no \| — \| Reuse for variant comparisons. \|
39
40	The schema is intentionally minimal — Kontext leans on prompt + single ref. For multi-image or web-grounded edits, route to Nano Banana Edit.
41
42	## How to invoke
43
44	Default — local edit, preserve everything else:
45
46	```bash
47	runcomfy run blackforestlabs/flux-1-kontext/pro/edit \
48	--input '{
49	"prompt": "Keep the person'\''s face, pose, and clothing unchanged. Add an orange umbrella in her left hand and a slight smile.",
50	"image": "https://.../portrait.jpg"
51	}' \
52	--output-dir <absolute/path>
53	```
54
55	With seed for reproducible variant series:
56
57	```bash
58	runcomfy run blackforestlabs/flux-1-kontext/pro/edit \
59	--input '{
60	"prompt": "Keep the bottle, label, and lighting unchanged. Replace the brand text on the label from \"ALPHA\" to \"AURA\".",
61	"image": "https://.../bottle.jpg",
62	"seed": 42
63	}' \
64	--output-dir <absolute/path>
65	```
66
67	## Prompting — what actually works
68
69	One declarative instruction. Kontext shines on prompts shaped like the docs example: `"She is now holding an orange umbrella and smiling"`. Imperative mood, single change.
70
71	Preservation first. Lead with `"Keep [identity / pose / framing / brand] unchanged."` Then the change. Models honor what's stated up front.
72
73	Single ref only — pick the right one. No multi-image fanout here. If you have multiple references, decide which is primary and pass that one. For multi-image flows, route to Nano Banana Edit.
74
75	Iterate on small changes. If Kontext drifts, split a compound edit into sequential single-instruction passes (pass 1: change background, pass 2: change clothing).
76
77	Aspect ratio — pick from the supported enum. Out-of-list values 422 or crop.
78
79	Anti-patterns:
80	- Compound prompts ("change A and add B and remove C") → drift.
81	- Trying to fan out to multiple source images → wrong model (use Nano Banana Edit).
82	- Prompts written in passive voice → less reliable.
83	- Asking for novel composition without a source image → wrong model (use Flux 2 Klein t2i).
84
85	## Where it shines
86
87	\| Use case \| Why Flux Kontext \|
88	\|---\|---\|
89	\| Single-shot precise local edit \| Specifically designed for this; high fidelity \|
90	\| Preserve source identity through targeted change \| Strong preservation under explicit instruction \|
91	\| Brand-asset text or color swap \| Quoted text + p

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Type

flux-kontext

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View on GitHub

How to install flux-kontext?

prime-skills/runcomfy-agent-skills/flux-kontext

$npx -y skills add prime-skills/runcomfy-agent-skills --skill flux-kontext

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# Flux Kontext Pro — Pro Pack on RunComfy
2
3	[runcomfy.com](https://www.runcomfy.com/?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-kontext) · [Model page](https://www.runcomfy.com/models/blackforestlabs/flux-1-kontext-pro/image-to-image?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-kontext) · [GitHub](https://github.com/agentspace-so/runcomfy-skills/tree/main/flux-kontext)
4
5	Black Forest Labs' Flux 1 Kontext Pro — single-reference precise local image edit — hosted on the RunComfy Model API. Strong prompt control, consistent outputs, high fidelity.
6
7	```bash
8	npx skills add agentspace-so/runcomfy-skills --skill flux-kontext -g
9	```
10
11	## When to pick this model (vs siblings)
12
13	\| You want \| Use \|
14	\|---\|---\|
15	\| Single-image precise local edit ("she's now holding X") \| Flux Kontext \|
16	\| High-fidelity preservation of source identity \| Flux Kontext \|
17	\| Batch edits across 1–20 images \| Nano Banana Edit \|
18	\| Edit multilingual / embedded text in image \| GPT Image 2 edit \|
19	\| Generate from scratch, no source image \| Flux 2 Klein \|
20
21	If the user said "Flux Kontext" / "kontext" / "BFL Kontext" explicitly, route here regardless.
22
23	## Prerequisites
24
25	1. RunComfy CLI — `npm i -g @runcomfy/cli`
26	2. RunComfy account — `runcomfy login` opens a browser device-code flow.
27	3. CI / containers — set `RUNCOMFY_TOKEN=<token>` instead of `runcomfy login`.
28
29	## Endpoints + input schema
30
31	### `blackforestlabs/flux-1-kontext/pro/edit`
32
33	\| Field \| Type \| Required \| Default \| Notes \|
34	\|---\|---\|---\|---\|---\|
35	\| `prompt` \| string \| yes \| — \| Single declarative edit instruction. \|
36	\| `image` \| string \| yes \| — \| Single source image URL (publicly fetchable HTTPS). \|
37	\| `aspect_ratio` \| enum \| no \| (input) \| Pick from supported W:H options on the model page. \|
38	\| `seed` \| int \| no \| — \| Reuse for variant comparisons. \|
39
40	The schema is intentionally minimal — Kontext leans on prompt + single ref. For multi-image or web-grounded edits, route to Nano Banana Edit.
41
42	## How to invoke
43
44	Default — local edit, preserve everything else:
45
46	```bash
47	runcomfy run blackforestlabs/flux-1-kontext/pro/edit \
48	--input '{
49	"prompt": "Keep the person'\''s face, pose, and clothing unchanged. Add an orange umbrella in her left hand and a slight smile.",
50	"image": "https://.../portrait.jpg"
51	}' \
52	--output-dir <absolute/path>
53	```
54
55	With seed for reproducible variant series:
56
57	```bash
58	runcomfy run blackforestlabs/flux-1-kontext/pro/edit \
59	--input '{
60	"prompt": "Keep the bottle, label, and lighting unchanged. Replace the brand text on the label from \"ALPHA\" to \"AURA\".",
61	"image": "https://.../bottle.jpg",
62	"seed": 42
63	}' \
64	--output-dir <absolute/path>
65	```
66
67	## Prompting — what actually works
68
69	One declarative instruction. Kontext shines on prompts shaped like the docs example: `"She is now holding an orange umbrella and smiling"`. Imperative mood, single change.
70
71	Preservation first. Lead with `"Keep [identity / pose / framing / brand] unchanged."` Then the change. Models honor what's stated up front.
72
73	Single ref only — pick the right one. No multi-image fanout here. If you have multiple references, decide which is primary and pass that one. For multi-image flows, route to Nano Banana Edit.
74
75	Iterate on small changes. If Kontext drifts, split a compound edit into sequential single-instruction passes (pass 1: change background, pass 2: change clothing).
76
77	Aspect ratio — pick from the supported enum. Out-of-list values 422 or crop.
78
79	Anti-patterns:
80	- Compound prompts ("change A and add B and remove C") → drift.
81	- Trying to fan out to multiple source images → wrong model (use Nano Banana Edit).
82	- Prompts written in passive voice → less reliable.
83	- Asking for novel composition without a source image → wrong model (use Flux 2 Klein t2i).
84
85	## Where it shines
86
87	\| Use case \| Why Flux Kontext \|
88	\|---\|---\|
89	\| Single-shot precise local edit \| Specifically designed for this; high fidelity \|
90	\| Preserve source identity through targeted change \| Strong preservation under explicit instruction \|
91	\| Brand-asset text or color swap \| Quoted text + p

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