Single-Step Tool Use (Function Calling) not working With Cohere

[Royal-lobster]

Checked other resources

• [X] I added a very descriptive title to this issue.
• [X] I searched the LangChain.js documentation with the integrated search.
• [X] I used the GitHub search to find a similar question and didn't find it.
• [X] I am sure that this is a bug in LangChain.js rather than my code.
• [X] The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

Following the example from https://docs.cohere.com/docs/tool-use

import { ChatCohere } from "@langchain/cohere";
import { HumanMessage } from "@langchain/core/messages";
import type { Cohere } from "cohere-ai";
import endent from "endent";

// tool descriptions that the model has access to
const tools: Cohere.ChatRequest["tools"] = [
  {
    name: "query_daily_sales_report",
    description:
      "Connects to a database to retrieve overall sales volumes and sales information for a given day.",
    parameterDefinitions: {
      day: {
        description:
          "Retrieves sales data for this day, formatted as YYYY-MM-DD.",
        type: "str",
        required: true,
      },
    },
  },
  {
    name: "query_product_catalog",
    description:
      "Connects to a a product catalog with information about all the products being sold, including categories, prices, and stock levels.",
    parameterDefinitions: {
      category: {
        description:
          "Retrieves product information data for all products in this category.",
        type: "str",
        required: true,
      },
    },
  },
];

// preamble containing instructions about the task and the desired style for the output.
const preamble = endent`
  ## Task & Context
  You help people answer their questions and other requests interactively. You will be asked a very wide array of requests on all kinds of topics. You will be equipped with a wide range of search engines or similar tools to help you, which you use to research your answer. You should focus on serving the user's needs as best you can, which will be wide-ranging.

  ## Style Guide
  Unless the user asks for a different style of answer, you should answer in full sentences, using proper grammar and spelling.
`;

const model = new ChatCohere({
  temperature: 0,
  model: "command-r-plus",
}).bind({
  preamble,
  tools,
});

const result = await model.invoke([
  new HumanMessage(
    "Can you provide a sales summary for 29th September 2023, and also give me some details about the products in the 'Electronics' category, for example their prices and stock levels?"
  ),
]);

console.log(result);

Error Message and Stack Trace (if applicable)

No response

Description

ChatCohere .bind() method is not passing down tools (as per cohere docs) to Cohere Client

const model = new ChatCohere({
  temperature: 0,
  model: "command-r-plus",
}).bind({
  preamble,
  tools,
});

Here is the request that is getting sent from machine with the code attached

curl 'https://api.cohere.ai/v1/chat' \
-X POST \
-H 'Host: api.cohere.ai' \
-H 'Connection: keep-alive' \
-H 'Accept: */*' \
-H 'Authorization: Bearer [SECRET]' \
-H 'Content-Type: application/json' \
--data-raw '{"model":"command-r-plus","preamble":"## Task & Context\nYou help people answer their questions and other requests interactively. You will be asked a very wide array of requests on all kinds of topics. You will be equipped with a wide range of search engines or similar tools to help you, which you use to research your answer. You should focus on serving the user'\''s needs as best you can, which will be wide-ranging.\n\n## Style Guide\nUnless the user asks for a different style of answer, you should answer in full sentences, using proper grammar and spelling.","temperature":0,"message":"Can you provide a sales summary for 29th September 2023, and also give me some details about the products in the '\''Electronics'\'' category, for example their prices and stock levels?","chat_history":[],"stream":false}' 

System Info

'./chat_models/googlevertexai': {
      types: {
        import: './chat_models/googlevertexai.d.ts',
        require: './chat_models/googlevertexai.d.cts',
        default: './chat_models/googlevertexai.d.ts'
      },
      import: './chat_models/googlevertexai.js',
      require: './chat_models/googlevertexai.cjs'
    },
    './chat_models/googlevertexai/web': {
      types: {
        import: './chat_models/googlevertexai/web.d.ts',
        require: './chat_models/googlevertexai/web.d.cts',
        default: './chat_models/googlevertexai/web.d.ts'
      },
      import: './chat_models/googlevertexai/web.js',
      require: './chat_models/googlevertexai/web.cjs'
    },
    './chat_models/googlepalm': {
      types: {
        import: './chat_models/googlepalm.d.ts',
        require: './chat_models/googlepalm.d.cts',
        default: './chat_models/googlepalm.d.ts'
      },
      import: './chat_models/googlepalm.js',
      require: './chat_models/googlepalm.cjs'
    },
    './chat_models/fireworks': {
      types: {
        import: './chat_models/fireworks.d.ts',
        require: './chat_models/fireworks.d.cts',
        default: './chat_models/fireworks.d.ts'
      },
      import: './chat_models/fireworks.js',
      require: './chat_models/fireworks.cjs'
    },
    './chat_models/baiduwenxin': {
      types: {
        import: './chat_models/baiduwenxin.d.ts',
        require: './chat_models/baiduwenxin.d.cts',
        default: './chat_models/baiduwenxin.d.ts'
      },
      import: './chat_models/baiduwenxin.js',
      require: './chat_models/baiduwenxin.cjs'
    },
    './chat_models/iflytek_xinghuo': {
      types: {
        import: './chat_models/iflytek_xinghuo.d.ts',
        require: './chat_models/iflytek_xinghuo.d.cts',
        default: './chat_models/iflytek_xinghuo.d.ts'
      },
      import: './chat_models/iflytek_xinghuo.js',
      require: './chat_models/iflytek_xinghuo.cjs'
    },
    './chat_models/iflytek_xinghuo/web': {
      types: {
        import: './chat_models/iflytek_xinghuo/web.d.ts',
        require: './chat_models/iflytek_xinghuo/web.d.cts',
        default: './chat_models/iflytek_xinghuo/web.d.ts'
      },
      import: './chat_models/iflytek_xinghuo/web.js',
      require: './chat_models/iflytek_xinghuo/web.cjs'
    },
    './chat_models/ollama': {
      types: {
        import: './chat_models/ollama.d.ts',
        require: './chat_models/ollama.d.cts',
        default: './chat_models/ollama.d.ts'
      },
      import: './chat_models/ollama.js',
      require: './chat_models/ollama.cjs'
    },
    './chat_models/minimax': {
      types: {
        import: './chat_models/minimax.d.ts',
        require: './chat_models/minimax.d.cts',
        default: './chat_models/minimax.d.ts'
      },
      import: './chat_models/minimax.js',
      require: './chat_models/minimax.cjs'
    },
    './chat_models/llama_cpp': {
      types: {
        import: './chat_models/llama_cpp.d.ts',
        require: './chat_models/llama_cpp.d.cts',
        default: './chat_models/llama_cpp.d.ts'
      },
      import: './chat_models/llama_cpp.js',
      require: './chat_models/llama_cpp.cjs'
    },
    './chat_models/yandex': {
      types: {
        import: './chat_models/yandex.d.ts',
        require: './chat_models/yandex.d.cts',
        default: './chat_models/yandex.d.ts'
      },
      import: './chat_models/yandex.js',
      require: './chat_models/yandex.cjs'
    },
    './chat_models/fake': {
      types: {
        import: './chat_models/fake.d.ts',
        require: './chat_models/fake.d.cts',
        default: './chat_models/fake.d.ts'
      },
      import: './chat_models/fake.js',
      require: './chat_models/fake.cjs'
    },
    './schema': {
      types: {
        import: './schema.d.ts',
        require: './schema.d.cts',
        default: './schema.d.ts'
      },
      import: './schema.js',
      require: './schema.cjs'
    },
    './schema/document': {
      types: {
        import: './schema/document.d.ts',
        require: './schema/document.d.cts',
        default: './schema/document.d.ts'
      },
      import: './schema/document.js',
      require: './schema/document.cjs'
    },
    './schema/output_parser': {
      types: {
        import: './schema/output_parser.d.ts',
        require: './schema/output_parser.d.cts',
        default: './schema/output_parser.d.ts'
      },
      import: './schema/output_parser.js',
      require: './schema/output_parser.cjs'
    },
    './schema/prompt_template': {
      types: {
        import: './schema/prompt_template.d.ts',
        require: './schema/prompt_template.d.cts',
        default: './schema/prompt_template.d.ts'
      },
      import: './schema/prompt_template.js',
      require: './schema/prompt_template.cjs'
    },
    './schema/query_constructor': {
      types: {
        import: './schema/query_constructor.d.ts',
        require: './schema/query_constructor.d.cts',
        default: './schema/query_constructor.d.ts'
      },
      import: './schema/query_constructor.js',
      require: './schema/query_constructor.cjs'
    },
    './schema/retriever': {
      types: {
        import: './schema/retriever.d.ts',
        require: './schema/retriever.d.cts',
        default: './schema/retriever.d.ts'
      },
      import: './schema/retriever.js',
      require: './schema/retriever.cjs'
    },
    './schema/runnable': {
      types: {
        import: './schema/runnable.d.ts',
        require: './schema/runnable.d.cts',
        default: './schema/runnable.d.ts'
      },
      import: './schema/runnable.js',
      require: './schema/runnable.cjs'
    },
    './schema/storage': {
      types: {
        import: './schema/storage.d.ts',
        require: './schema/storage.d.cts',
        default: './schema/storage.d.ts'
      },
      import: './schema/storage.js',
      require: './schema/storage.cjs'
    },
    './sql_db': {
      types: {
        import: './sql_db.d.ts',
        require: './sql_db.d.cts',
        default: './sql_db.d.ts'
      },
      import: './sql_db.js',
      require: './sql_db.cjs'
    },
    './callbacks': {
      types: {
        import: './callbacks.d.ts',
        require: './callbacks.d.cts',
        default: './callbacks.d.ts'
      },
      import: './callbacks.js',
      require: './callbacks.cjs'
    },
    './callbacks/handlers/llmonitor': {
      types: {
        import: './callbacks/handlers/llmonitor.d.ts',
        require: './callbacks/handlers/llmonitor.d.cts',
        default: './callbacks/handlers/llmonitor.d.ts'
      },
      import: './callbacks/handlers/llmonitor.js',
      require: './callbacks/handlers/llmonitor.cjs'
    },
    './output_parsers': {
      types: {
        import: './output_parsers.d.ts',
        require: './output_parsers.d.cts',
        default: './output_parsers.d.ts'
      },
      import: './output_parsers.js',
      require: './output_parsers.cjs'
    },
    './output_parsers/expression': {
      types: {
        import: './output_parsers/expression.d.ts',
        require: './output_parsers/expression.d.cts',
        default: './output_parsers/expression.d.ts'
      },
      import: './output_parsers/expression.js',
      require: './output_parsers/expression.cjs'
    },
    './retrievers/amazon_kendra': {
      types: {
        import: './retrievers/amazon_kendra.d.ts',
        require: './retrievers/amazon_kendra.d.cts',
        default: './retrievers/amazon_kendra.d.ts'
      },
      import: './retrievers/amazon_kendra.js',
      require: './retrievers/amazon_kendra.cjs'
    },
    './retrievers/remote': {
      types: {
        import: './retrievers/remote.d.ts',
        require: './retrievers/remote.d.cts',
        default: './retrievers/remote.d.ts'
      },
      import: './retrievers/remote.js',
      require: './retrievers/remote.cjs'
    },
    './retrievers/supabase': {
      types: {
        import: './retrievers/supabase.d.ts',
        require: './retrievers/supabase.d.cts',
        default: './retrievers/supabase.d.ts'
      },
      import: './retrievers/supabase.js',
      require: './retrievers/supabase.cjs'
    },
    './retrievers/zep': {
      types: {
        import: './retrievers/zep.d.ts',
        require: './retrievers/zep.d.cts',
        default: './retrievers/zep.d.ts'
      },
      import: './retrievers/zep.js',
      require: './retrievers/zep.cjs'
    },
    './retrievers/metal': {
      types: {
        import: './retrievers/metal.d.ts',
        require: './retrievers/metal.d.cts',
        default: './retrievers/metal.d.ts'
      },
      import: './retrievers/metal.js',
      require: './retrievers/metal.cjs'
    },
    './retrievers/chaindesk': {
      types: {
        import: './retrievers/chaindesk.d.ts',
        require: './retrievers/chaindesk.d.cts',
        default: './retrievers/chaindesk.d.ts'
      },
      import: './retrievers/chaindesk.js',
      require: './retrievers/chaindesk.cjs'
    },
    './retrievers/databerry': {
      types: {
        import: './retrievers/databerry.d.ts',
        require: './retrievers/databerry.d.cts',
        default: './retrievers/databerry.d.ts'
      },
      import: './retrievers/databerry.js',
      require: './retrievers/databerry.cjs'
    },
    './retrievers/contextual_compression': {
      types: {
        import: './retrievers/contextual_compression.d.ts',
        require: './retrievers/contextual_compression.d.cts',
        default: './retrievers/contextual_compression.d.ts'
      },
      import: './retrievers/contextual_compression.js',
      require: './retrievers/contextual_compression.cjs'
    },
    './retrievers/document_compressors': {
      types: {
        import: './retrievers/document_compressors.d.ts',
        require: './retrievers/document_compressors.d.cts',
        default: './retrievers/document_compressors.d.ts'
      },
      import: './retrievers/document_compressors.js',
      require: './retrievers/document_compressors.cjs'
    },
    './retrievers/multi_query': {
      types: {
        import: './retrievers/multi_query.d.ts',
        require: './retrievers/multi_query.d.cts',
        default: './retrievers/multi_query.d.ts'
      },
      import: './retrievers/multi_query.js',
      require: './retrievers/multi_query.cjs'
    },
    './retrievers/multi_vector': {
      types: {
        import: './retrievers/multi_vector.d.ts',
        require: './retrievers/multi_vector.d.cts',
        default: './retrievers/multi_vector.d.ts'
      },
      import: './retrievers/multi_vector.js',
      require: './retrievers/multi_vector.cjs'
    },
    './retrievers/parent_document': {
      types: {
        import: './retrievers/parent_document.d.ts',
        require: './retrievers/parent_document.d.cts',
        default: './retrievers/parent_document.d.ts'
      },
      import: './retrievers/parent_document.js',
      require: './retrievers/parent_document.cjs'
    },
    './retrievers/vectara_summary': {
      types: {
        import: './retrievers/vectara_summary.d.ts',
        require: './retrievers/vectara_summary.d.cts',
        default: './retrievers/vectara_summary.d.ts'
      },
      import: './retrievers/vectara_summary.js',
      require: './retrievers/vectara_summary.cjs'
    },
    './retrievers/tavily_search_api': {
      types: {
        import: './retrievers/tavily_search_api.d.ts',
        require: './retrievers/tavily_search_api.d.cts',
        default: './retrievers/tavily_search_api.d.ts'
      },
      import: './retrievers/tavily_search_api.js',
      require: './retrievers/tavily_search_api.cjs'
    },
    './retrievers/time_weighted': {
      types: {
        import: './retrievers/time_weighted.d.ts',
        require: './retrievers/time_weighted.d.cts',
        default: './retrievers/time_weighted.d.ts'
      },
      import: './retrievers/time_weighted.js',
      require: './retrievers/time_weighted.cjs'
    },
    './retrievers/document_compressors/chain_extract': {
      types: {
        import: './retrievers/document_compressors/chain_extract.d.ts',
        require: './retrievers/document_compressors/chain_extract.d.cts',
        default: './retrievers/document_compressors/chain_extract.d.ts'
      },
      import: './retrievers/document_compressors/chain_extract.js',
      require: './retrievers/document_compressors/chain_extract.cjs'
    },
    './retrievers/document_compressors/embeddings_filter': {
      types: {
        import: './retrievers/document_compressors/embeddings_filter.d.ts',
        require: './retrievers/document_compressors/embeddings_filter.d.cts',
        default: './retrievers/document_compressors/embeddings_filter.d.ts'
      },
      import: './retrievers/document_compressors/embeddings_filter.js',
      require: './retrievers/document_compressors/embeddings_filter.cjs'
    },
    './retrievers/hyde': {
      types: {
        import: './retrievers/hyde.d.ts',
        require: './retrievers/hyde.d.cts',
        default: './retrievers/hyde.d.ts'
      },
      import: './retrievers/hyde.js',
      require: './retrievers/hyde.cjs'
    },
    './retrievers/score_threshold': {
      types: {
        import: './retrievers/score_threshold.d.ts',
        require: './retrievers/score_threshold.d.cts',
        default: './retrievers/score_threshold.d.ts'
      },
      import: './retrievers/score_threshold.js',
      require: './retrievers/score_threshold.cjs'
    },
    './retrievers/self_query': {
      types: {
        import: './retrievers/self_query.d.ts',
        require: './retrievers/self_query.d.cts',
        default: './retrievers/self_query.d.ts'
      },
      import: './retrievers/self_query.js',
      require: './retrievers/self_query.cjs'
    },
    './retrievers/self_query/chroma': {
      types: {
        import: './retrievers/self_query/chroma.d.ts',
        require: './retrievers/self_query/chroma.d.cts',
        default: './retrievers/self_query/chroma.d.ts'
      },
      import: './retrievers/self_query/chroma.js',
      require: './retrievers/self_query/chroma.cjs'
    },
    './retrievers/self_query/functional': {
      types: {
        import: './retrievers/self_query/functional.d.ts',
        require: './retrievers/self_query/functional.d.cts',
        default: './retrievers/self_query/functional.d.ts'
      },
      import: './retrievers/self_query/functional.js',
      require: './retrievers/self_query/functional.cjs'
    },
    './retrievers/self_query/pinecone': {
      types: {
        import: './retrievers/self_query/pinecone.d.ts',
        require: './retrievers/self_query/pinecone.d.cts',
        default: './retrievers/self_query/pinecone.d.ts'
      },
      import: './retrievers/self_query/pinecone.js',
      require: './retrievers/self_query/pinecone.cjs'
    },
    './retrievers/self_query/supabase': {
      types: {
        import: './retrievers/self_query/supabase.d.ts',
        require: './retrievers/self_query/supabase.d.cts',
        default: './retrievers/self_query/supabase.d.ts'
      },
      import: './retrievers/self_query/supabase.js',
      require: './retrievers/self_query/supabase.cjs'
    },
    './retrievers/self_query/weaviate': {
      types: {
        import: './retrievers/self_query/weaviate.d.ts',
        require: './retrievers/self_query/weaviate.d.cts',
        default: './retrievers/self_query/weaviate.d.ts'
      },
      import: './retrievers/self_query/weaviate.js',
      require: './retrievers/self_query/weaviate.cjs'
    },
    './retrievers/self_query/vectara': {
      types: {
        import: './retrievers/self_query/vectara.d.ts',
        require: './retrievers/self_query/vectara.d.cts',
        default: './retrievers/self_query/vectara.d.ts'
      },
      import: './retrievers/self_query/vectara.js',
      require: './retrievers/self_query/vectara.cjs'
    },
    './retrievers/vespa': {
      types: {
        import: './retrievers/vespa.d.ts',
        require: './retrievers/vespa.d.cts',
        default: './retrievers/vespa.d.ts'
      },
      import: './retrievers/vespa.js',
      require: './retrievers/vespa.cjs'
    },
    './retrievers/matryoshka_retriever': {
      types: {
        import: './retrievers/matryoshka_retriever.d.ts',
        require: './retrievers/matryoshka_retriever.d.cts',
        default: './retrievers/matryoshka_retriever.d.ts'
      },
      import: './retrievers/matryoshka_retriever.js',
      require: './retrievers/matryoshka_retriever.cjs'
    },
    './cache': {
      types: {
        import: './cache.d.ts',
        require: './cache.d.cts',
        default: './cache.d.ts'
      },
      import: './cache.js',
      require: './cache.cjs'
    },
    './cache/cloudflare_kv': {
      types: {
        import: './cache/cloudflare_kv.d.ts',
        require: './cache/cloudflare_kv.d.cts',
        default: './cache/cloudflare_kv.d.ts'
      },
      import: './cache/cloudflare_kv.js',
      require: './cache/cloudflare_kv.cjs'
    },
    './cache/momento': {
      types: {
        import: './cache/momento.d.ts',
        require: './cache/momento.d.cts',
        default: './cache/momento.d.ts'
      },
      import: './cache/momento.js',
      require: './cache/momento.cjs'
    },
    './cache/redis': {
      types: {
        import: './cache/redis.d.ts',
        require: './cache/redis.d.cts',
        default: './cache/redis.d.ts'
      },
      import: './cache/redis.js',
      require: './cache/redis.cjs'
    },
    './cache/ioredis': {
      types: {
        import: './cache/ioredis.d.ts',
        require: './cache/ioredis.d.cts',
        default: './cache/ioredis.d.ts'
      },
      import: './cache/ioredis.js',
      require: './cache/ioredis.cjs'
    },
    './cache/file_system': {
      types: {
        import: './cache/file_system.d.ts',
        require: './cache/file_system.d.cts',
        default: './cache/file_system.d.ts'
      },
      import: './cache/file_system.js',
      require: './cache/file_system.cjs'
    },
    './cache/upstash_redis': {
      types: {
        import: './cache/upstash_redis.d.ts',
        require: './cache/upstash_redis.d.cts',
        default: './cache/upstash_redis.d.ts'
      },
      import: './cache/upstash_redis.js',
      require: './cache/upstash_redis.cjs'
    },
    './stores/doc/in_memory': {
      types: {
        import: './stores/doc/in_memory.d.ts',
        require: './stores/doc/in_memory.d.cts',
        default: './stores/doc/in_memory.d.ts'
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Platform: Mac OS Sonoma (Version 14.4.1 (23E224)) Node version: v18.17.0 yarn version: v1.22.22

[dosubot[bot]]

It appears there's an issue with the ChatCohere.bind() method not correctly passing the tools to the Cohere Client in LangChain.js. This problem might stem from a bug within the LangChain.js framework itself. To address this, you could try updating LangChain.js to the latest version, as sometimes these issues are resolved in newer releases.

Alternatively, consider directly passing the tools to the ChatCohere constructor to see if it circumvents the issue:

const model = new ChatCohere({
  temperature: 0,
  model: "command-r-plus",
  tools,
});

If the problem persists, I recommend filing a new issue in the LangChain.js repository with the details you've provided here. The maintainers could offer more specific guidance or identify if this is indeed a bug that needs fixing.

Sources

• ChatConversationalAgent tools missing error
• examples/src/models/chat/cohere/chat_cohere.ts

#### About Dosu

This response is meant to be useful and save you time. It is **not meant to be a precise solution**, but rather a starting point for your own research. Help me be more useful! Please leave a 👍 if this is helpful and 👎 if it is irrelevant. If you want to continue the conversation, start your reply with @dosu-bot.

[bracesproul]

Hey, we don't have support for tool calling in the JS Cohere package yet. If you would like to make this contribution (we would really appreciate it!!) I can assign you to a new issue.

[Royal-lobster]

Hey, we don't have support for tool calling in the JS Cohere package yet. If you would like to make this contribution (we would really appreciate it!!) I can assign you to a new issue.

I see, I can work on this