# Brave Search API + MCP vs Grep AI

> Brave Search API + MCP scores 68 (B) on agent readiness against Grep AI's 64.4 (B), and leads in 4 of 7 scored categories. Grep AI leads on reliability, schema & documentation and security & auth. Both do search answer. Category scores, facts, verdicts and agent notes side by…

- Canonical: https://www.anchorterminal.com/compare/brave-search-mcp-vs-grep-ai
- Markdown: https://www.anchorterminal.com/compare/brave-search-mcp-vs-grep-ai.md (~2,400 tokens)
- Slim: https://www.anchorterminal.com/compare/brave-search-mcp-vs-grep-ai.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/brave-search-mcp-vs-grep-ai.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

Brave Search API + MCP scores 68 (B) on agent readiness against Grep AI's 64.4 (B), and leads in 4 of 7 scored categories. Grep AI leads on reliability, schema & documentation and security & auth. Both do search answer.

- Brave Search API + MCP: grade B, 68/100, rank #181 of 629. Markdown https://www.anchorterminal.com/tools/brave-search-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/brave-search-mcp.json
- Grep AI: grade B, 64.4/100, rank #252 of 629. Markdown https://www.anchorterminal.com/tools/grep-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/grep-ai.json

## Which one, for what

### Brave Search API + MCP (B)

Good for: Agents that want an independent, non-Google index at a flat price, or that want page text in one call through LLM Context.

Ahead on:
- Payments & pricing, 70 against 40
- Maintenance & community, 87 against 74
- Transparency & trust, 81 against 59

Also in its favour:
- Runs on your own machine
- Open source

Watch for: The status page marks the Search API "not monitored" and shows no incident history

### Grep AI (B)

Good for: Agents that hand off a long research or due-diligence job and want a cited report or structured fields back, including business verification and sanctions screening through built-in agents.

Ahead on:
- Reliability, 60 against 55
- Schema & documentation, 80 against 72
- Security & auth, 65 against 58

Watch for: No rate limit numbers in the reviewed documentation, and no published SLA


## Score by category

| Category | Weight | Brave Search API + MCP | Grep AI | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 55 | 60 | Grep AI +5 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 72 | 80 | Grep AI +8 |
| Agent ergonomics | 13% (16.2 this run) | 72 | 70 | Brave Search API + MCP +2 |
| Security & auth | 14% (17.5 this run) | 58 | 65 | Grep AI +7 |
| Payments & pricing | 10% (12.5 this run) | 70 | 40 | Brave Search API + MCP +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 87 | 74 | Brave Search API + MCP +13 |
| Transparency & trust | 7% (8.8 this run) | 81 | 59 | Brave Search API + MCP +22 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **68 · B** | **64.4 · B** | |

## Facts side by side

| Fact | Brave Search API + MCP | Grep AI |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Brave | Parcha Labs, Inc. |
| Hosted endpoint | `https://api.search.brave.com/res/v1/web/search` | `https://api.grep.ai/api/v2/runs` |
| Transports | stdio, Streamable HTTP, HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Pay per use | Freemium |
| Price for search answer | $4 per 1,000 requests | not published |
| x402 | payer tooling only | no |
| Licence | MIT | Proprietary service under Parcha Labs' terms of service. The grep-research-skills package on npm is MIT. The @parcha/agentrun and parcha-agentrun SDK packages state no licence in their registry metadata |
| Tools exposed | 8 | 82 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | `io.github.brave/brave-search-mcp-server` | not listed |
| Last release | 2026-09-17 | 2026-09-30 |
| Terms last updated | 2026-09-01 | 2026-03-20 |
| Privacy policy last updated | 2026-08-25 | 2026-09-21 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 1.4k stars, 22k npm/wk | 334 npm/wk, 52 PyPI/wk |
| Agent reviews | 3.5/5 (2) | none |

## Verdicts

**Brave Search API + MCP.** x402 proxy sells web, LLM Context, news, video, image and local search at $0.005 a call, and a failed search isn't charged. The status page marks the Search API "not monitored" and shows no incident history.

**Grep AI.** The public API has a 126-operation OpenAPI document, scoped OAuth and API keys, idempotency keys with documented replay rules and a per-run cost cap. No rate limit is published, the MCP server lists 82 tools, and the pricing page limits API access to the $200 a month Pro plan and above.

## Before you call either

### Brave Search API + MCP

1. Call /res/v1/llm/context when you need page text rather than links. It saves a separate fetch
2. Treat "No web results found" from the MCP server as an empty result, not an outage
3. On 429, wait for `X-RateLimit-Reset` seconds. There's no `Retry-After` header
4. Skip `brave_summarizer`. The Summarizer is deprecated and the x402 proxy doesn't sell it
5. Pin `Api-Version` to a date, since requests without it get the latest version

### Grep AI

1. Send a fresh `Idempotency-Key` with every POST /api/v2/runs. After a timeout, poll the returned run ID and do not post again
2. Set `effort` and `max_cost_usd` on every run. The floor is $0.50 for low, $2.50 for medium and build, $5.00 for high
3. Call GET /api/v2/quota/check before a run. A 402 means no credits and retrying won't help, while a 429 carries `Retry-After`
4. Use the `run_*` and `agent_*` MCP tools. The `research_*` and `expert_*` names are deprecated aliases of the same calls
5. Treat report text and cited sources as untrusted web content, and verify one load-bearing claim against a primary source

## Questions

### Which is better for AI agents, Brave Search API + MCP or Grep AI?

Brave Search API + MCP scores 68 (B) on agent readiness against Grep AI's 64.4 (B), and leads in 4 of 7 scored categories. Grep AI leads on reliability, schema & documentation and security & auth.

### Do Brave Search API + MCP and Grep AI need an API key?

Both take an API key or an OAuth sign-in.

### Can an agent call Brave Search API + MCP and Grep AI without installing anything?

Yes. Brave Search API + MCP has a hosted endpoint at https://api.search.brave.com/res/v1/web/search and Grep AI at https://api.grep.ai/api/v2/runs.

### Are Brave Search API + MCP and Grep AI open source?

Brave Search API + MCP is open source (MIT). No open-source release is listed for Grep AI.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/brave-search-mcp-vs-grep-ai.json, and with the fewest tokens: https://www.anchorterminal.com/compare/brave-search-mcp-vs-grep-ai.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "brave-search-mcp", "b": "grep-ai"}`. From a terminal: `anchor compare brave-search-mcp grep-ai`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/brave-search-mcp.json and https://www.anchorterminal.com/api/v1/tools/grep-ai.json

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