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fix(tools): harden tool schemas for strict providers

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This commit is contained in:
Peter Steinberger
2026-01-13 06:28:09 +00:00
parent fa75d84b75
commit d682b604de
13 changed files with 253 additions and 373 deletions
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60
src/agents/tools/browser-tool.ts
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@@ -22,6 +22,7 @@ import {
import { resolveBrowserConfig } from "../../browser/config.js";
import { DEFAULT_AI_SNAPSHOT_MAX_CHARS } from "../../browser/constants.js";
import { loadConfig } from "../../config/config.js";
import { optionalStringEnum, stringEnum } from "../schema/typebox.js";
import {
type AnyAgentTool,
imageResultFromFile,
@@ -43,16 +44,35 @@ const BROWSER_ACT_KINDS = [
"close",
] as const;
type BrowserActKind = (typeof BROWSER_ACT_KINDS)[number];
const BROWSER_TOOL_ACTIONS = [
"status",
"start",
"stop",
"tabs",
"open",
"focus",
"close",
"snapshot",
"screenshot",
"navigate",
"console",
"pdf",
"upload",
"dialog",
"act",
] as const;
const BROWSER_TARGETS = ["sandbox", "host", "custom"] as const;
const BROWSER_SNAPSHOT_FORMATS = ["aria", "ai"] as const;
const BROWSER_IMAGE_TYPES = ["png", "jpeg"] as const;
// NOTE: Using a flattened object schema instead of Type.Union([Type.Object(...), ...])
// because Claude API on Vertex AI rejects nested anyOf schemas as invalid JSON Schema.
// The discriminator (kind) determines which properties are relevant; runtime validates.
const BrowserActSchema = Type.Object({
kind: Type.Unsafe<BrowserActKind>({
type: "string",
enum: [...BROWSER_ACT_KINDS],
}),
kind: stringEnum(BROWSER_ACT_KINDS),
// Common fields
targetId: Type.Optional(Type.String()),
ref: Type.Optional(Type.String()),
@@ -89,37 +109,15 @@ const BrowserActSchema = Type.Object({
// A root-level `Type.Union([...])` compiles to `{ anyOf: [...] }` (no `type`),
// which OpenAI rejects ("Invalid schema ... type: None"). Keep this schema an object.
const BrowserToolSchema = Type.Object({
action: Type.Union([
Type.Literal("status"),
Type.Literal("start"),
Type.Literal("stop"),
Type.Literal("tabs"),
Type.Literal("open"),
Type.Literal("focus"),
Type.Literal("close"),
Type.Literal("snapshot"),
Type.Literal("screenshot"),
Type.Literal("navigate"),
Type.Literal("console"),
Type.Literal("pdf"),
Type.Literal("upload"),
Type.Literal("dialog"),
Type.Literal("act"),
]),
target: Type.Optional(
Type.Union([
Type.Literal("sandbox"),
Type.Literal("host"),
Type.Literal("custom"),
]),
),
action: stringEnum(BROWSER_TOOL_ACTIONS),
target: optionalStringEnum(BROWSER_TARGETS),
profile: Type.Optional(Type.String()),
controlUrl: Type.Optional(Type.String()),
targetUrl: Type.Optional(Type.String()),
targetId: Type.Optional(Type.String()),
limit: Type.Optional(Type.Number()),
maxChars: Type.Optional(Type.Number()),
format: Type.Optional(Type.Union([Type.Literal("aria"), Type.Literal("ai")])),
format: optionalStringEnum(BROWSER_SNAPSHOT_FORMATS),
interactive: Type.Optional(Type.Boolean()),
compact: Type.Optional(Type.Boolean()),
depth: Type.Optional(Type.Number()),
@@ -128,7 +126,7 @@ const BrowserToolSchema = Type.Object({
fullPage: Type.Optional(Type.Boolean()),
ref: Type.Optional(Type.String()),
element: Type.Optional(Type.String()),
type: Type.Optional(Type.Union([Type.Literal("png"), Type.Literal("jpeg")])),
type: optionalStringEnum(BROWSER_IMAGE_TYPES),
level: Type.Optional(Type.String()),
paths: Type.Optional(Type.Array(Type.String())),
inputRef: Type.Optional(Type.String()),