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Write context window and max tokens into Pi's models.json on configure #37

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Write context window and max tokens into Pi's models.json on configure #37

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f9e747f
Write context window and max tokens into Pi's models.json on configure
devin-ai-integration[bot] Oct 7, 2026
dfe9c5f
Take Pi's context window from the picked model instead of refetching
devin-ai-integration[bot] Oct 7, 2026
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8 changes: 6 additions & 2 deletions internal/harnesses/harnesses.go
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Original file line number Diff line number Diff line change
Expand Up @@ -13,8 +13,12 @@ type Status struct {
}

type ConfigureOptions struct {
Model string
Overwrite bool
Model string
// ContextWindow and MaxOutputTokens are what the model list reports for
// Model, zero when it does not say.
ContextWindow int
MaxOutputTokens int
Overwrite bool
}

type LaunchOptions struct {
Expand Down
24 changes: 21 additions & 3 deletions internal/harnesses/pi.go
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Original file line number Diff line number Diff line change
Expand Up @@ -46,7 +46,9 @@ type piProviderConfig struct {
}

type piModelConfig struct {
ID string `json:"id"`
ID string `json:"id"`
ContextWindow int `json:"contextWindow"`
MaxTokens int `json:"maxTokens"`
}

type PiHarness struct {
Expand Down Expand Up @@ -402,7 +404,7 @@ func (p *PiHarness) configureMerge(opts ConfigureOptions) error {
"X-Title": "Pi",
},
"models": []any{
map[string]any{"id": opts.Model},
piModelConfigFrom(opts),
},
},
},
Expand Down Expand Up @@ -445,7 +447,7 @@ func (p *PiHarness) configureOverwrite(opts ConfigureOptions) error {
"X-Title": "Pi",
},
Models: []piModelConfig{
{ID: opts.Model},
piModelConfigFrom(opts),
},
},
},
Expand All @@ -468,6 +470,22 @@ func (p *PiHarness) configureOverwrite(opts ConfigureOptions) error {
return nil
}

// piModelConfigFrom describes the configured model with its capacities, since
// Pi caps a model without them at 128k tokens.
func piModelConfigFrom(opts ConfigureOptions) piModelConfig {
entry := piCatalogModelFrom(client.Model{
ID: opts.Model,
ContextWindow: opts.ContextWindow,
MaxOutputTokens: opts.MaxOutputTokens,
})

return piModelConfig{
ID: entry.ID,
ContextWindow: entry.ContextWindow,
MaxTokens: entry.MaxTokens,
}
}

func (p *PiHarness) modelsPath() string {
return filepath.Join(p.configDir, "models.json")
}
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8 changes: 5 additions & 3 deletions internal/harnesses/pi_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,9 @@ func TestPiHarnessRoundTrip(t *testing.T) {

// Configure the machine.
err = harness.Configure(ConfigureOptions{
Model: "anthropic/claude-fable-5",
Model: "anthropic/claude-fable-5",
ContextWindow: 1_000_000,
MaxOutputTokens: 64_000,
})
require.NoError(t, err)

Expand All @@ -63,7 +65,7 @@ func TestPiHarnessRoundTrip(t *testing.T) {
"X-Title": "Pi"
},
"models": [
{"id": "anthropic/claude-fable-5"}
{"id": "anthropic/claude-fable-5", "contextWindow": 1000000, "maxTokens": 64000}
]
}
}
Expand Down Expand Up @@ -107,7 +109,7 @@ func TestPiHarnessConfigureCreatesMissingConfig(t *testing.T) {
"X-Title": "Pi"
},
"models": [
{"id": "anthropic/claude-fable-5"}
{"id": "anthropic/claude-fable-5", "contextWindow": 200000, "maxTokens": 8192}
]
}
}
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7 changes: 6 additions & 1 deletion internal/tui/pages/requesty/dashboard/integrations.go
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Original file line number Diff line number Diff line change
Expand Up @@ -254,7 +254,10 @@ func (m integrationState) updateModelStep(msg tea.KeyPressMsg) (integrationState
if m.wizard.modelsErr == nil &&
len(models) > 0 &&
m.cursor < len(m.items) {
m.wizard.options.Model = models[m.wizard.modelCursor].ID
model := models[m.wizard.modelCursor]
m.wizard.options.Model = model.ID
m.wizard.options.ContextWindow = model.ContextWindow
m.wizard.options.MaxOutputTokens = model.MaxOutputTokens
m.wizard.step = integrationModeWizardStep
m.wizard.modeCursor = 0
m.wizard.configureErr = nil
Expand Down Expand Up @@ -292,6 +295,8 @@ func (m integrationState) updateModeStep(msg tea.KeyPressMsg) (integrationState,
case "esc":
m.wizard.step = integrationModelWizardStep
m.wizard.options.Model = ""
m.wizard.options.ContextWindow = 0
m.wizard.options.MaxOutputTokens = 0
m.wizard.modeCursor = 0
m.wizard.configureErr = nil
case "up", "k":
Expand Down
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