diff --git a/CHANGELOG.md b/CHANGELOG.md
index 336d55f..54ef353 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,20 @@
 # Changelog
 
-## Unreleased
+## v3.24.0 — 2026-07-21
+
+Minor release. Headline: two long-requested **OpenAI-compat features** land — **multimodal vision** (`image_url` parts) and **structured outputs** (`response_format` / JSON schema). Also: the prompt-char budget now derives from the model SPOT instead of a hand-set constant, an agentic-turn bug that dropped the model's final answer is fixed, and `OCP_LOCAL_TOOLS` supports the OpenClaw-backend use case. Four of the six landed from external contributors (@vvlasy-openclaw). Every code PR carried a fresh-context reviewer (Iron Rule 10); no new endpoint, no new `cli.js` wire behavior.
 
 ### Added
 
-- **`OCP_LOCAL_TOOLS` — positive local-tools system-prompt wrapper (single-user, loopback only; default off).** The `-p` path prepends a wrapper telling the model it has no local filesystem/shell access — correct for a shared gateway, but it makes a personal instance's model (e.g. an OpenClaw agent on its own local OCP) refuse to use the server-side `claude` tools it legitimately has (which, on a loopback instance, are the operator's own machine). `=1` swaps in a positive wrapper. Changes **only the prompt**, never the tool surface (`--allowedTools`/`--disallowedTools` untouched; multi-tenant still disallows the FS surface); it does **not** enable client-side `tool_calls` (still unsupported by design). Fail-closed boot gate mirroring `OCP_TUI_FULL_TOOLS` (ADR 0007): refuses to start under `CLAUDE_AUTH_MODE=multi`, a non-loopback bind, or `PROXY_ANONYMOUS_KEY`. Inert (and logged as such) in TUI mode. Pure selection + gate logic in `lib/prompt.mjs` (unit-tested); the active wrapper is folded into the config epoch so toggling it invalidates the standard response cache. Verified end-to-end (boot the server + a fake `claude` capturing `--system-prompt`); default path byte-for-byte unchanged. No new `cli.js` wire behavior (reuses the already-cited `--system-prompt` flag).
+- **Multimodal vision — OpenAI `image_url` parts (#154, contributed by @vvlasy-openclaw).** `/v1/chat/completions` forwards OpenAI `image_url` content parts to `claude` as native Anthropic image blocks via `--input-format stream-json` (the CLI's own contract — no invented wire shape, verified live). Base64 `data:` URIs by default; remote `http(s)` URLs are off unless `CLAUDE_IMAGE_ALLOW_URL=1` (and even then OCP never fetches them — no SSRF surface). Byte/count caps (`CLAUDE_MAX_IMAGE_BYTES`, `CLAUDE_MAX_IMAGES`, `CLAUDE_MAX_IMAGE_TOTAL_BYTES`), all fail-closed on a misconfigured value. TUI mode returns `400 images_unsupported_in_tui_mode` (it can't carry image blocks) and an image present only in a `system` message returns `400` rather than being silently dropped. README § "Images / Multimodal".
+- **Structured outputs — OpenAI `response_format` (#153, contributed by @vvlasy-openclaw).** `/v1/chat/completions` honors `response_format: { type: "json_schema" | "json_object" }` so OpenAI-SDK clients (Home Assistant AI Tasks, Honcho, scripts) get machine-parseable JSON in `content`. Validates against the schema (incl. `$ref`/`$defs` + `allOf`/`anyOf`/`oneOf` — the shapes the OpenAI SDK emits), retries with a stronger instruction up to `OCP_STRUCTURED_MAX_ATTEMPTS` (default 3, fail-closed), and on exhaustion returns OpenAI's own `refusal` field (200/`content:null`) rather than an invented error. Cyclic-`$ref` schemas fail closed (no stack overflow); a pathologically deep model reply returns a refusal, not a 500 (#181). Single-flight dedup + structured-keyed cache bound the cost. Class B.1 (ADR 0006). README § "Structured Outputs".
+- **SPOT-derived prompt-char budget (#179, ADR 0009).** `MAX_PROMPT_CHARS` default now derives from `max(models.json contextWindow) × 3 chars/token` (600,000 today) instead of the hand-set 150,000 (~37.5k tokens) that silently under-delivered the advertised window ~5×. `CLAUDE_MAX_PROMPT_CHARS` and the settings API remain absolute overrides; a garbage value fails closed to the derived default.
+- **`OCP_LOCAL_TOOLS` — positive local-tools system-prompt wrapper (single-user, loopback only; default off) (#182, contributed by @vvlasy-openclaw).** The `-p` path prepends a wrapper telling the model it has no local filesystem/shell access — correct for a shared gateway, but it makes a personal instance's model (e.g. an OpenClaw agent on its own local OCP) refuse to use the server-side `claude` tools it legitimately has. `=1` swaps in a positive wrapper. Changes **only the prompt**, never the tool surface (`--allowedTools`/`--disallowedTools` untouched; multi-tenant still disallows the FS surface); it does **not** enable client-side `tool_calls` (still unsupported by design). Fail-closed boot gate mirroring `OCP_TUI_FULL_TOOLS` (ADR 0007): refuses to start under `CLAUDE_AUTH_MODE=multi`, a non-loopback bind, or `PROXY_ANONYMOUS_KEY`. Inert (and logged as such) in TUI mode. The active wrapper is folded into the config epoch so toggling it invalidates the standard response cache. No new `cli.js` wire behavior (reuses the already-cited `--system-prompt` flag).
+
+### Fixed
+
+- **Agentic turns dropped the model's final answer (#183, contributed by @vvlasy-openclaw).** On a tool-using turn, `/v1/chat/completions` returned only the opening preamble ("I'll find the repo…") and silently discarded the post-tool-use final answer: aggregate-`assistant` extraction was gated on `isFirstDelta` (which flips false after the first text), and OCP runs pure-aggregate mode (no `--include-partial-messages`), so each of an agentic turn's several assistant messages after the first was lost. Now guards on `sawTextDelta` and accumulates every assistant message (streaming and buffered paths assemble byte-identically).
+- **Deep structured reply returned a 500 instead of a refusal (#181 / #184).** `validateJsonSchema` recurses on the model reply's nesting depth; a ~2000-level-deep reply overflowed the stack → caught `RangeError` → generic 500. A crash-safe façade converts that (only) into a validation miss → refusal; any other throw still surfaces.
 
 ## v3.23.0 — 2026-07-17
 
diff --git a/package.json b/package.json
index 4c8744b..851ee98 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "open-claude-proxy",
-  "version": "3.23.0",
+  "version": "3.24.0",
   "description": "OCP (Open Claude Proxy) — use your Claude Pro/Max subscription as an OpenAI-compatible API for any IDE. Works with Cline, OpenCode, Aider, Continue.dev, OpenClaw, and more.",
   "type": "module",
   "bin": {