Agent builder index

Agentic APIs that are worth integrating

Curated API registry with implementation metadata builders need before shipping: auth style, tool-calling support, pricing hints, docs quality, and known integration gotchas.

Registry

6 APIs

agent runtimedocs hightool-calling native

OpenAI Responses API

OpenAI

Unified response endpoint for text, tools, and multimodal interactions.

Auth: api_key

Rate limits: Tier-based limits per model and account.

Pricing: Token-based pricing by model family.

Gotcha: Schema/tool definitions can drift across model upgrades; pin regression checks.

responses_apitool_callingproduction
model runtimedocs hightool-calling native

Anthropic Messages API

Anthropic

Claude model runtime with long-context reasoning and structured tool use.

Auth: api_key

Rate limits: Tiered request/token limits; throughput varies by model.

Pricing: Input/output token pricing varies by model size.

Gotcha: Tool argument formatting and stop reasons need strict parser handling.

claudetool_uselong_context
model runtimedocs mediumtool-calling partial

OpenRouter

OpenRouter

Multi-provider model routing API for fast experimentation and fallback.

Auth: api_key

Rate limits: Provider-dependent quotas plus account-level controls.

Pricing: Pass-through pricing plus routing overhead depending on model/provider.

Gotcha: Model availability and capabilities can shift by upstream provider.

routingmulti_providerfallback
memory vectordocs hightool-calling none

Pinecone

Pinecone

Managed vector database for retrieval and long-term agent memory.

Auth: api_key

Rate limits: Index size and operation-based limits by plan.

Pricing: Usage and capacity based.

Gotcha: Index design and metadata filtering strategy directly impact latency.

vector_dbragmemory
eval observabilitydocs hightool-calling partial

LangSmith

LangChain

Tracing, eval, and observability tooling for LLM and agent workflows.

Auth: api_key

Rate limits: Event and trace ingestion limits by plan.

Pricing: Usage-based tracing/eval tiers.

Gotcha: Without consistent run metadata, comparisons become noisy quickly.

observabilityevalstracing
tool executiondocs mediumtool-calling partial

Browserbase

Browserbase

Cloud browser sessions for autonomous browsing and workflow automation.

Auth: api_key

Rate limits: Concurrent session quotas by plan.

Pricing: Session-minute based pricing.

Gotcha: Session warm-up and anti-bot behavior can distort benchmark timings.

browser_useautomationagent_tools

Live agentic update stream

Signals from the core feed that mention agent runtimes, tool-calling APIs, orchestration, or memory stack updates.

newsOpenAI

Rogue OpenAI agents accessed US government websites without its knowledge

OpenAI has confirmed that its artificial intelligence (AI) models accessed the websites of the US Department of Commerce and Securities and Exchange Commission (SEC) this summer.

newsOpenAI

OpenAI says AI agents interacted with Education, Commerce, SEC websites in US

OpenAI said Friday found its AI agents may have bypassed security controls, disrupted services, or otherwise affected outside websites during training.

newsOpenAI

Australia not alone as OpenAI agents hacked other websites

OpenAI says dozens more third parties were affected by rogue agents bypassing website security controls, as new traces reveal days of attempts to access Australian health data.

newsOpenAI

OpenAI Warns Dozens of Institutions of Possible AI Agent Security Impacts

OpenAI says its AI agents breached security at external systems and has notified dozens of governments, universities and public institutions of possible impacts, including a leak of more than 50 user images.

newsOpenAI

OpenAI's AI agents went rogue, meddled with multiple US government websites: Report

OpenAI is investigating incidents involving its AI agents accessing US government websites during testing. The agents allegedly engaged in aggressive web browsing, while the company has identified several cases of unintended behaviour, raising concerns about AI safety and oversight.

newsOpenAI

OpenAI rogue agents leaked 53 images from ChatGPT users and reportedly created nearly 1 million links packing encoded bits of info

Back-to-back reports on Friday provided more alarming details of rogue AI agent activity at OpenAI.

newsMeta

Meta's 'Muse' AI Agent Storms U.S. Market, Shakes Up Industry

Meta's AI agent Muse topped U.S. app download charts with 2.5 million downloads in 13 days, lifting Meta shares 26.8%.

newsOpenAI

OpenAI probes unauthorised activity by AI agents as rogue ChatGPT agents leak user images

OpenAI said its agents leaked 53 images belonging to ChatGPT users

newsOpenAI

OpenAI says its bots have broken into other government websites

The ChatGPT maker says its AI agents have meddled with websites of government services and universities, and the list, according to a New York Times report, includes prominent US government departments.

newsOpenAI

OpenAI says its bots have broken into other government websites

The ChatGPT maker says its AI agents have meddled with websites of government services and universities, and the list, according to a New York Times report, includes prominent US government departments.

newsOpenAI

OpenAI says its bots have broken into other government websites

The ChatGPT maker says its AI agents have meddled with websites of government services and universities, and the list, according to a New York Times report, includes prominent US government departments.

newsOpenAI

OpenAI says its bots have broken into other government websites

The ChatGPT maker says its AI agents have meddled with websites of government services and universities, and the list, according to a New York Times report, includes prominent US government departments.

newsPbs

Hacks by autonomous AI agents raise thorny questions of legal accountability

What happens when the hackers aren't human? That's the question at the center of a public policy debate following disclosures by leading tech companies that their AI models went rogue and hacked into other organizations.

newsOpenAI

Can OpenAI actually be held legally responsible for rogue agent hack?

The Australian government is considering legal consequences for OpenAI after a rogue agent hacked one of its websites.