# Does anyone try to use Perplexity API on Openclaw? Couldn't do it **URL:** \ **Category:** General\ **Tags:** agent-api\ **Created:** [April 9, 2026, 9:28am UTC](https://community.perplexity.ai/t/does-anyone-try-to-use-perplexity-api-on-openclaw-couldnt-do-it/4760 "2026-04-09T09:28:32Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![leonideo](https://sea1.discourse-cdn.com/flex001/user_avatar/community.perplexity.ai/leonideo/32/2238_2.png) [@leonideo](https://community.perplexity.ai/u/leonideo)\ **Post date:** [April 9, 2026, 9:28am UTC](https://community.perplexity.ai/t/does-anyone-try-to-use-perplexity-api-on-openclaw-couldnt-do-it/4760/1 "2026-04-09T09:28:32Z")
I have try many time’s and different ways even with perplexity computer but it doesnt works at all… Mabe anyone do it already and have some setup tips for me ---
**Author:** ![Kesku](https://sea1.discourse-cdn.com/flex001/user_avatar/community.perplexity.ai/kesku/32/898_2.png) [@Kesku](https://community.perplexity.ai/u/Kesku)\ **Post date:** [April 9, 2026, 10:57pm UTC](https://community.perplexity.ai/t/does-anyone-try-to-use-perplexity-api-on-openclaw-couldnt-do-it/4760/2 "2026-04-09T22:57:13Z")
Hey! Have you read [Perplexity with OpenClaw - Perplexity](https://docs.perplexity.ai/docs/getting-started/integrations/openclaw)? ---
**Author:** ![leonideo](https://sea1.discourse-cdn.com/flex001/user_avatar/community.perplexity.ai/leonideo/32/2238_2.png) [@leonideo](https://community.perplexity.ai/u/leonideo)\ **Post date:** [April 9, 2026, 11:28pm UTC](https://community.perplexity.ai/t/does-anyone-try-to-use-perplexity-api-on-openclaw-couldnt-do-it/4760/3 "2026-04-09T23:28:57Z")
Yeah i see about search but i mean use as LLM model but have a problem, gpts does work at all, sonar same, claude works but only chat mode tools doesn’t work ---
**Author:** ![leonideo](https://sea1.discourse-cdn.com/flex001/user_avatar/community.perplexity.ai/leonideo/32/2238_2.png) [@leonideo](https://community.perplexity.ai/u/leonideo)\ **Post date:** [April 10, 2026, 3:12am UTC](https://community.perplexity.ai/t/does-anyone-try-to-use-perplexity-api-on-openclaw-couldnt-do-it/4760/4 "2026-04-10T03:12:22Z")
# **[FIX] OpenClaw + Perplexity Agent API: all tool calls fail with empty arguments `{}`** **OpenClaw version:** 2026.4.9 **Provider:** Perplexity Agent API (`https://api.perplexity.ai/v1`) **API type:** `openai-responses` **Model:** `perplexity/anthropic/claude-sonnet-4-6` * * * ## **Symptom** When using OpenClaw with the Perplexity Agent API in `openai-responses` mode, any tool (exec, write, read, etc.) fails with a validation error: ```auto text ``` \*\*`Validation failed for tool "exec":` ` - command: must have required property 'command'` `Received arguments:` `{}`\*\* Chat replies without tool calls work fine — only tool calling is broken. Arguments always come through as empty `{}`. * * * ## **Cause** The streaming parser for the OpenAI Responses API (`openai-responses-shared.js` from `@mariozechner/pi-ai`) expects function call arguments to arrive incrementally via `response.function_call_arguments.delta` events. However, **Perplexity Agent API sends all arguments immediately** in the first `response.output_item.added` event (inside `item.arguments`) and never emits subsequent `delta` or `done` events for function arguments. Here’s what happens step by step: 1. On receiving `response.output_item.added` with `item.type === "function_call"`, the parser creates a `currentBlock` with `arguments: {}` and stores `item.arguments` in `partialJson`. 2. It then waits for `response.function_call_arguments.delta` events to fill `arguments` from `partialJson` — but **Perplexity never sends those**. 3. When `response.output_item.done` comes, the parser creates a **new** `toolCall` object with correctly parsed arguments from `partialJson` and passes it in the stream event `toolcall_end`, but **does not update** the existing entry in `output.content`. 4. The agent loop (`agent-loop.js` in `@mariozechner/pi-agent-core`) reads tool calls from `message.content` — where `arguments` are still `{}`. 5. Validation fails since required properties are missing. Example from the session file: ```auto json ``` **`{` ` "type": "toolCall",` ` "name": "exec",` ` "arguments": {},` ` "partialJson": "{\\"command\\": \\"echo \\\\\\"tools test ok\\\\\\"\\"}"` `}`** The arguments were correctly captured in `partialJson`, but never copied to `arguments`. * * * ## **Fix** ## **File to patch** ```auto text ``` **`/usr/lib/node_modules/openclaw/node_modules/@mariozechner/pi-ai/dist/providers/openai-responses-shared.js`** ## **What to change** Find the `response.output_item.done` handler for type `function_call` (around lines 392–405). It looks like this: ```auto javascript ``` **`else if (item.type === "function_call") {` ` const args = currentBlock?.type === "toolCall" && currentBlock.partialJson` ` ? parseStreamingJson(currentBlock.partialJson)` ` : parseStreamingJson(item.arguments || "{}");` ` const toolCall = {` ` type: "toolCall",` ` id: `${item.call_id}|${item.id}`,` ` name: item.name,` ` arguments: args,` ` };` ` currentBlock = null;` ` stream.push({ type: "toolcall_end", contentIndex: blockIndex(), toolCall, partial: output });` `}`** Add two lines **before** `currentBlock = null;`: ```auto javascript ``` **`else if (item.type === "function_call") {` ` const args = currentBlock?.type === "toolCall" && currentBlock.partialJson` ` ? parseStreamingJson(currentBlock.partialJson)` ` : parseStreamingJson(item.arguments || "{}");` ` const toolCall = {` ` type: "toolCall",` ` id: `${item.call_id}|${item.id}`,` ` name: item.name,` ` arguments: args,` ` };`** _ **`// FIX: update entry in output.content so agent-loop sees correct arguments`** _\*\* ` const idx = output.content.indexOf(currentBlock);` ` if (idx >= 0) { output.content[idx] = toolCall; }` ` currentBlock = null;` ` stream.push({ type: "toolcall_end", contentIndex: blockIndex(), toolCall, partial: output });` `}`\*\* ## **Restart gateway** After saving the file, restart the gateway service: ```auto bash ``` **`systemctl --user restart openclaw-gateway`** ## **Why it works** The `toolcall_end` event already contains the correct `toolCall` object with parsed arguments. The problem is that the agent loop reads tool calls from `message.content`, which still holds the old `currentBlock` with empty `{}` arguments. The patch replaces that outdated record with the properly parsed `toolCall` before clearing `currentBlock`. * * * ## **Warning about updates** This patch modifies a file inside `node_modules`. Whenever OpenClaw is updated (`npm update -g openclaw`), the patch will be overwritten — you’ll need to reapply it until it’s merged upstream in `@mariozechner/pi-ai`. * * * ## **Extra: proper configuration for Perplexity Agent API** Configuration file: `~/.openclaw/openclaw.json` | **Parameter** | **Correct value** | **Common mistake** | | --- | --- | --- | | `apiType` | `openai-responses` | `openai-completions` — doesn’t work | | `baseUrl` | `https://api.perplexity.ai/v1` | `/v1/agent` — invalid path | | `model` | `perplexity/anthropic/claude-sonnet-4-6` | — | > **Note: `baseUrl` must be `https://api.perplexity.ai/v1`, not `/v1/agent`. > The API type should be `openai-responses`.** ---
**Author:** ![Kesku](https://sea1.discourse-cdn.com/flex001/user_avatar/community.perplexity.ai/kesku/32/898_2.png) [@Kesku](https://community.perplexity.ai/u/Kesku)\ **Post date:** [April 13, 2026, 3:57am UTC](https://community.perplexity.ai/t/does-anyone-try-to-use-perplexity-api-on-openclaw-couldnt-do-it/4760/5 "2026-04-13T03:57:30Z")
Good catch on the root cause! The upstream fix has since landed in [`pi-mono#2745`](https://github.com/badlogic/pi-mono/issues/2745) and pi 0.66.1 includes it. OpenClaw `2026.4.11` (the current `latest`) pulls in that version now. A quick `npm update -g openclaw` should sort it out. Tool calling via Agent API works out of the box now, we verified chat + tool calls with `openai-responses` and `perplexity/anthropic/claude-sonnet-4-6` on `2026.4.11` without any patches. [We’ve also updated our documentation with a guide on using our Agent API for Openclaw](https://docs.perplexity.ai/docs/getting-started/integrations/openclaw#agent-api-setup-use-perplexity-as-your-llm-provider)! ---
**Author:** ![leonideo](https://sea1.discourse-cdn.com/flex001/user_avatar/community.perplexity.ai/leonideo/32/2238_2.png) [@leonideo](https://community.perplexity.ai/u/leonideo)\ **Post date:** [April 13, 2026, 4:15am UTC](https://community.perplexity.ai/t/does-anyone-try-to-use-perplexity-api-on-openclaw-couldnt-do-it/4760/6 "2026-04-13T04:15:53Z")
Got it thank u very much for fast update!