Merge
Also known as: merge.dev, Merge API, Merge Agent Handler, Agent Handler, Merge Gateway, Merge for Workforce, Merge Unified
Merge connects the AI agents a company builds to third party tools, data and models. Agent Handler gives agents more than 190 maintained MCP connectors with per user OAuth, tool scoping, a Security Gateway that redacts or blocks sensitive data, plain English guardrails and a log of every call. Gateway routes requests across 270+ models with failover and budgets, Merge for Workforce governs employees' AI tools and models, and the Unified API syncs HR, CRM, accounting, ticketing and file data.
Merge is a San Francisco company, Merge API Inc., that began with the Unified API, one REST interface for reading and writing data across more than 260 HR, payroll, recruiting, CRM, accounting, ticketing, file storage, knowledge base and chat systems, used by companies such as Ramp, Drata, Zoom and Bill. It now sells that integration layer to AI products and agents. Agent Handler gives agents tools, Gateway routes their model calls, and Merge for Workforce extends the same controls to employees' own AI clients. OpenAI, Perplexity, Dropbox and Telnyx appear among its named customers.
Agent Handler is the core agent product. An agent connects to one MCP endpoint and reaches more than 190 prebuilt connectors, among them Salesforce, Slack, Jira, GitHub, HubSpot, NetSuite and Workday, with normalized tool schemas written for models. Each end user authenticates once through Merge Link or a magic link, and credentials are stored encrypted and injected only when a call goes out, so neither the agent nor the model ever sees a token. Tool Packs decide which connectors and tools an agent surface can reach, overrides rewrite tool descriptions or force and hide input fields, and any MCP server a customer runs can be registered as a custom connector.
A Security Gateway scans every call for personal, health, payment and custom regex matches and allows, redacts or blocks them, and AI Guardrails judge plain English rules on requests and responses before they pass. Tool call logs capture arguments, results, latency, the user and any redaction, an audit trail records admin actions, and webhooks or a SIEM stream carry both onward. Gateway serves 270+ models from more than 20 families through OpenAI, Anthropic and Vercel AI SDK compatible endpoints, with ranked and learned routing, failover, context compression and budgets per organization, project, key or customer.
Agent Handler is free for 2,000 tool calls a month, and Pro starts at $1,000 a month for 25,000 calls with overage billed at month end; Enterprise is custom and adds on premises deployment, custom connectors and SIEM streaming. Gateway is free for free models and otherwise charges model cost plus 5%, and the Unified API is free for three linked accounts, then $650 a month for up to ten. Merge holds SOC 2 Type II and ISO 27001 and supports HIPAA and GDPR, and the dashboard offers SAML single sign on, SCIM, four default roles and custom roles. Standard plans run on AWS US East, while Enterprise contracts can pin data to the EU or APAC, run single tenant or deploy into the customer's own VPC.
Merge fits product teams shipping agents that must act in their customers' business systems on each user's own credentials, security teams that need every tool call scanned and logged, and companies that want tools, models and data integrations from one vendor. It fits less well for teams that want a builder that runs the agent itself with workflows, memory or a knowledge index, or a hosted browser, since Merge supplies the connections, guardrails and routing while the agent loop stays in the customer's own runtime.
Vendor details
Canonical URL
https://www.merge.dev
Category
Agent infrastructure
Subcategory
Tool calling, LLM routing and data integrations for AI agents, with per user authentication, data loss prevention and audit logs
Funding status
Privately held. Merge API Inc. of San Francisco names no funding rounds on the pages read.
Company status
independent
Use cases & customers
Primary use cases
Target customers
Deployment options
Integrations
Agent Handler offers 190+ MCP connectors, including Salesforce, HubSpot, Slack, Jira, GitHub, NetSuite and Workday, plus any MCP server the customer registers. The Unified API covers 260+ HR, payroll, ATS, CRM, accounting, ticketing, file storage, knowledge base and chat systems. Gateway reaches models from OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek, Qwen and others. Agents connect from Claude, ChatGPT, Cursor, Claude Code, Copilot Studio and any MCP client, and identity syncs from Okta, Microsoft Entra ID and other SCIM providers.
In practice
A sales AI startup lets each customer's reps connect Salesforce and Gmail once through Merge Link. Its agent then calls one Agent Handler MCP endpoint to update opportunities and draft follow ups, each call running on that rep's own credentials inside a Tool Pack limited to those two connectors, with every call and argument in the tool call log.
A healthcare software company turns on Security Gateway rules that redact patient identifiers and block card numbers in every tool call, and adds an AI Guardrail that blocks any mention of an unannounced product in outgoing Jira tickets. Violations land in alerts with the user and the call attached, and logs stream to the company's SIEM.
An IT team at a streaming company syncs Okta groups into Merge for Workforce, so engineers get GitHub and Jira tools and an approved model list in Claude Code while finance gets NetSuite only. Budgets cap each team's model spend through Gateway, and leaving the company ends a person's AI access the moment the identity provider removes them.
Sources & related URLs
Related / legacy domains
Research sources
Agentic Index coverage score
8.5 / 14 capabilities · 61%
| Integrations & Tool Calling | Full |
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Agents reach more than 190 prebuilt connectors through one MCP endpoint, including Salesforce, Slack, Jira, GitHub, HubSpot, NetSuite and Workday, with tool schemas normalized and descriptions written for models. Each end user authenticates once through Merge Link or a magic link, or a Group shares one set of credentials, and tokens stay encrypted until the moment a call goes out. Any MCP server a customer runs at a public address can be registered as a custom connector and served through the same endpoint, and Enterprise adds connectors Merge builds to order. Sourcedocs.merge.dev/merge-agent-handler/overviewread 2026-11-09 |
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| Workflow Orchestration | Not documented |
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Merge serves one tool call or one model request at a time and runs no workflow of its own. The agent loop, the order of steps and any handoff between agents stay in the customer's runtime, which calls Agent Handler over MCP and Gateway over an OpenAI or Anthropic compatible API. Gateway's routing policies choose which model serves a request and fail over between providers, and Workforce skills hand employees' agents shared written procedures, but neither sequences or branches multistep work. Sourcedocs.merge.dev/merge-agent-handler/overviewread 2026-11-09 |
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| Knowledge Grounding & RAG | Partial |
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The Unified API keeps a synced, normalized copy of a customer's records, files and knowledge base articles from connected HR, CRM, ticketing, file storage and knowledge base systems, refreshed on a schedule that runs from quarterly up to the highest setting and queryable through one schema per category. An AI product can ground answers on that store without calling each system, and incremental sync keeps it current. Merge builds no search index or embeddings over it, so retrieval and ranking happen in the customer's own pipeline, and the Universal Context Layer is announced on the marketing site only. Sourcedocs.merge.dev/llms.txtread 2026-11-09 |
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| Human Oversight & Guardrails | Partial |
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Controls set what an agent can do rather than holding its calls for a person. Tool Packs fix which connectors and tools each agent surface reaches, input overrides hide, force or constrain fields, and the Security Gateway allows, redacts or blocks personal, health, payment and custom pattern matches. AI Guardrails judge plain English rules, such as no mention of a confidential project, on requests and responses and block or log each match, and per user rate limits cap runaway calls. No step routes a tool call to a reviewer for approval before it runs. Sourcedocs.merge.dev/merge-agent-handler/secure/ai-guardrailsread 2026-11-09 |
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| Security, Identity & Governance | Full |
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Dashboard members get Admin, Developer, Security or Read Only roles, or custom roles built from read and write permissions per resource, and sign in through SAML single sign on with SCIM provisioning and multifactor authentication. End users are isolated by user scoped access keys, so one user's agent cannot call tools as another. Merge holds SOC 2 Type II, with reports under NDA, and ISO 27001, supports HIPAA and GDPR, and encrypts stored credentials with AES 256, decrypting them only at the moment of injection. Sourcedocs.merge.dev/merge-agent-handler/administer/team-and-rolesread 2026-11-09 |
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| Observability & Auditability | Full |
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Every tool call lands in a log with its arguments, result, latency broken into auth, scan, dispatch and third party time, the end user it ran for, any redaction applied and any error, filterable by user or tool. API request logs sit beside it, an audit trail records admin changes such as role and plan switches, and guardrail violations appear in alerts linked to the call. Webhooks fan events to the customer's pipeline, Enterprise streams logs to a SIEM, and Gateway attaches a cost to every response. Sourcedocs.merge.dev/merge-agent-handler/overviewread 2026-11-09 |
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| Memory & State Persistence | Not documented |
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Tool calls through Agent Handler are stateless, results are never cached, and nothing the agent learns is kept for a later session. What persists is records about the agent rather than memory for it: tool call logs held for 90 days by default, the audit trail, and stored end user credentials. Workforce skills are shared procedures people write for their teams' agents. Conversation state, user preferences and anything an agent should remember stay in the customer's own runtime and storage. Sourcedocs.merge.dev/merge-agent-handler/resources/faqread 2026-11-09 |
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| Deployment & Data Residency | Full |
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Standard plans store tool call logs, credentials and configuration in encrypted databases on AWS US East. Enterprise contracts can pin data to the EU or APAC, run a single tenant instance, peer with the customer's VPC, or deploy Agent Handler and Gateway on premises or inside the customer's own cloud. The Unified API offers a self hosted option and a single tenant option for purchase and can land synced data in the customer's own environment, and region pinning is one of the terms an Enterprise contract sets. Sourcedocs.merge.dev/merge-agent-handler/resources/faqread 2026-11-09 |
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| Prebuilt Agents / Templates / Packs | Partial |
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Merge ships the parts of an agent rather than agents. Tool Packs bundle the connectors and tools one agent surface may use, a preconfigured pack lets a new account make its first call, and AI Guardrails start from templates that prefill each rule. Workforce adds a shared skills library that teams write and publish for one another. No prebuilt agent, packaged workflow or ready made assistant comes in the box, so each team assembles its own from these pieces in its own runtime. Sourcedocs.merge.dev/merge-agent-handler/overviewread 2026-11-09 |
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| Triggers & Channel Coverage | Partial |
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Agent Handler acts only when an agent calls it, and its webhooks report events such as tool calls and alerts rather than starting work. Event delivery comes from the Unified API, whose Merge webhooks and third party webhooks tell the customer's endpoint when records change in a connected HR, CRM, ticketing or file system, so a team can use a new hire or a closed deal to start its own agent. Merge itself never wakes an agent, and Agent Handler has no schedule or inbound trigger of its own. Sourcedocs.merge.dev/merge-unified/reading-data/webhooks/overviewread 2026-11-09 |
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| Model Flexibility & Routing | Full |
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Gateway gives a team 270+ models from more than 20 families, including OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek and Qwen, behind one base URL. The customer picks models directly or through routing policies selected by a model alias, ranked or learned, with failover on outages and rate limits, and Pro adds custom policies, its own provider keys and settings that let its customers choose their own models. Workforce limits each group to an approved list. Agent Handler works with any model whose runtime speaks MCP. Sourcedocs.merge.dev/merge-gateway/routing/overviewread 2026-11-09 |
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| APIs / SDKs / MCP Extensibility | Full |
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OpenAPI specifications cover the Agent Handler API, the Gateway API and its management and embedded routing APIs, and the Unified APIs for HR, recruiting, CRM, accounting, ticketing, file storage, knowledge base and chat, with official SDKs and a command line tool. Teams manage connectors, Tool Packs, registered users, access keys and usage over REST, the MCP endpoint takes OAuth sign in, and both Agent Handler and Gateway accept an unauthenticated signup call that creates an organization and returns a working key. Sourcedocs.merge.dev/llms.txtread 2026-11-09 |
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| Testing, Debugging & Optimization | Partial |
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Testing centers on the safety rules and tool setup. The Rule Tester runs a sample input through the whole Security Gateway, streaming entity detections, guardrail verdicts and the block decision in order, with a library of payment, health, personal, secret, financial and legal samples plus a benign control, and the Playground makes test tool calls. Test API keys and sandboxes for third party platforms let a team try integrations before launch. Nothing scores an agent's answers or compares one agent version against another. Sourcedocs.merge.dev/merge-agent-handler/secure/rule-testerread 2026-11-09 |
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| Browser / Computer-use | Not documented |
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Merge never puts an agent in front of a browser, desktop or remote computer. Every action goes through an API: connectors call each third party's own endpoints with the end user's credentials, passthrough requests reach endpoints the common schema does not cover, and custom MCP servers extend the catalog. For a system with no API, a team needs a separate browser automation product, since Merge offers no hosted browser or screen control of its own. Sourcedocs.merge.dev/merge-agent-handler/overviewread 2026-11-09 |
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The Agentic Index coverage score grades every vendor Full, Partial or Not documented against the same 14 buyer facing capabilities, from public evidence only. Each capability links to how all vendors in the index score on it. How this evidence is graded
Pricing
Agent Handler is free for 2,000 tool calls a month, then Pro at $1,000 a month for 25,000. Gateway charges model cost plus 5%, and the Unified API is free for three linked accounts, then $650 a month for up to ten.
Agent Handler credits, one per tool call; Gateway model cost plus a 5% fee; Unified linked accounts; Workforce and Employees Pro per provisioned user
Included quota
Agent Handler Free includes 2,000 credits a month and Pro 25,000 plus 2,000 bonus, with larger allowances of 30,000, 40,000, 60,000, 80,000 or 100,000. Unified Launch includes three free production linked accounts and up to ten for $650 a month.
What is public
Agent Handler plan prices and credit allowances, Gateway's fee, Unified Launch pricing and per account overage, and which features sit on each plan.
Billing mechanics
Agent Handler bills a monthly plan through Stripe with credits spent one per tool call and overage invoiced at month end. Gateway bills model usage plus 5% pay as you go. Enterprise contracts often run on invoice with SEPA or ACH.
Cost watchouts
Failed and blocked tool calls and test key calls spend credits. Provisioning employees through SCIM moves an organization onto Employees Pro, priced per user and not published. Gateway's 5% applies on top of model costs, and on premises deployment needs Enterprise.
Variable cost rationale
Agent Handler is a flat monthly allowance with overage per tool call, so spend climbs with agent activity, including failed and blocked calls. Gateway adds 5% to whatever the models cost. Unified grows per linked account, and Workforce per seat.
Additional watchouts
Standard plans keep data in AWS US East; EU or APAC residency, single tenant and on premises deployment are Enterprise terms.
Overage / add-ons
On Agent Handler Free, tool calls stop with a 402 error at 2,000 a month. On Pro, calls past the allowance bill as overage at month end, and failed or blocked calls count as one credit each. Unified linked accounts past ten cost $65 each on Launch.
Sales call required
Mixed (some tiers require a call)
Free / trial
Free plans with no card: Agent Handler with 2,000 tool calls a month, unlimited registered users and Tool Packs; Gateway with all free models; Unified with three production linked accounts.
Lowest paid plan
Agent Handler Pro at $1,000 a month for 25,000 tool calls, with overage billed at month end
Commercial notes
Unified API, Agent Handler and Gateway each have a free plan and self serve signup, and both Agent Handler and Gateway let an agent create its own account with one API call.
Key ambiguities
Merge for Workforce and Employees Pro are priced per seat but the seat price is not on the pages read, and the Agent Handler comparison table lists an Evaluation Suite with no matching documentation.
Cancellation / refund
Self serve Pro cancels to Free at the end of the billing cycle with data kept; there is no proration on upgrades. Account closure starts a 30 day grace period before data is purged.
Support SLA / resale
Community Discord on Free, email support on Pro, and a dedicated Slack channel, premium support and custom SLAs on Enterprise.
Missing data
Workforce and Employees Pro seat prices, Enterprise pricing and volume discounts.
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Alternatives to Merge
The closest documented capability profiles to Merge among agent infrastructure platforms tracked by Agentic Index, ordered by similarity on the same 14 point evidence the rankings use. No vendor pays for placement.
- Gentoro8.0 / 14Adds documented Workflow Orchestration
- Metorial8.0 / 14Fuller documented coverage on Triggers & Channel Coverage
- Stacklok8.0 / 14Fuller documented coverage on Prebuilt Agents, Templates & Packs
- Arcade7.5 / 14Fuller documented coverage on Testing, Debugging & Optimization
- Cartesia10.5 / 14Adds documented Workflow Orchestration and Memory & State Persistence
- Confident AI8.5 / 14Fuller documented coverage on Triggers & Channel Coverage and Testing, Debugging & Optimization
Similarity is computed from each vendor's Agentic Index coverage score evidence, axis by axis, not from the totals. How this evidence is graded